Administrative Tasks
FileServ Version 4.3
February, 2001
600716 Rev A
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Contents
Purpose of This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3
Who Should Read This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3
How This Book is Organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-4
Books . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-5
Online Books . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-5
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-6
Contact Publications Department . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-6
Secured Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-6
Initialize FileServ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Access the Host Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Interface to VolServ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Drive Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Register the Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Define DataClass Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Associate Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Media Under FileServ Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Create Migration Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
600716 Rev A
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Administrative Tasks
Store and Truncate Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Database Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
chk_point.pl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
checkDBALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
keyBuildAll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
Command Line Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16
Interactive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17
Trashcan Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20
Startup and Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22
Normal Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22
Recovery Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23
Contingency Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23
Normal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25
Managing System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27
General Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-28
Default Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-36
Installation Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-41
Edit System Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-46
Reconfigure System Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-47
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600716 Rev A
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Administrative Tasks
Add a Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-49
Edit Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-50
Generate Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-51
Change Component State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-53
Add and Delete Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-55
Reallocate Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-57
Modify Tape Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-58
Redirect Policy Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-59
DataClass Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
DataClass Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
File Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22
Spanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-23
Clustering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-24
Generate Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-28
Data Migration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30
File Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30
Minimum Time Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-31
600716 Rev A
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Administrative Tasks
Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-31
Storage Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32
Cleanup Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-34
Overflow Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-35
Store Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-40
Clean Up Data from Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-42
Copy Secondary Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-43
General Storage Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-44
Retrieve Files from Trashcan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-48
Clean up Trashcan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-50
Retrieve Partial Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-51
Media Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-54
Remove Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-57
Add Blank Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-57
Remove Blank Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-59
Format Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-61
Media Duplication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-61
Copy Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-63
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Media States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-63
Generate Media Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-66
Media List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-68
Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
fspic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
autostart scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
FileServ and Amass Autostart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
dbcheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
keybuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Trouble-
shooting Tools
4
Data Retrieval Fails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Disaster Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Syslog Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Extract Syslog Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Log File Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Set Up FileServ Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
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Dump Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
Restore Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
Database Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
Troubleshoot System Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20
DataClass Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21
Media Movement Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23
Resource Queue Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-24
History Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25
Component Statistics Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-26
Hardware Configuration Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-27
Contact Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29
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Administrative Tasks
NOTES
P-2
Preface
600716 Rev A
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Administrative Tasks
This book describes the management tasks, utilities, and
troubleshooting tools used in operating FileServ.
Purpose of
This Book
This book is written for the system administrator who is
operating and troubleshooting FileServ.
Who Should
Read This
Book
It assumes the administrator has a strong familiarity with:
•
•
UNIX operating systems.
Applications running in their site environment.
This book contains the following chapters:
How This
Book is
Organized
Chapter 1: Initial Tasks — Initialize FileServ, configure
interface with VolServ, perform start up and shut down,
configure system parameters, and tune system for better
performance.
Chapter 2: Operating Tasks — Manage: DataClass Groups,
files, migration, data, and media.
Chapter 3: Utilities — Using the FileServ utilities.
Chapter 4: Troubleshooting Tools — Troubleshoot operating
problems.
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Administrative Tasks
The conventions used throughout the FileServ technical books
are listed below:
Conventions
Convention
Example
Screen text, file names, program names, and
FS0000 03 204773 fsmedinfo
commands are in Courier font.
completed: Command Successful.
The root prompt is shown as a percent sign.
% su root
What you should type in is shown in
fsadmret
Courier bold font.
Site-specific variables are in a Times italics
fsaudit newfilesystem
font.
A backward slash ( \ ) denotes the input is
continued onto the next line; the printed page
is just not wide enough to accommodate the
line.
% remsh nodename -n dd if=/dev \
/tapedevicename/bs=20b | tar xvfb \
- 20
(You should type the entire command without
the backward slash.)
Pressing <Return> after each command is
assumed.
A menu name with an arrow refers to a
sequence of menus.
Edit Policy -> Add Library
P-4
Preface
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Administrative Tasks
The books described below are part of the technical
documentation set, and are shipped on CD:
Books
FileServ Overview
Administrative Tasks
An overview of FileServ. Contains a
glossary.
System tasks, operating tasks, FileServ
utilities, and troubleshooting problems.
Installing FileServ
Command Reference
An alphabetical list of FileServ
commands.
Describes: server requirements, installation
procedures, configuration parameters, and
tools to troubleshoot install problems.
quick reference card
Error Messages
Summarizes commands.
Summarizes error messages.
The documentation CD contains FileServ book files and
Adobe® Acrobat® Reader. The Reader allows you to view and
navigate the online documentation files yet preserves the page
design and graphics from the printed books.
Online Books
600716 Rev A
Preface
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Administrative Tasks
The publications described in the table below are created and
distributed on an as-needed basis.
Related
Publications
Related Publications
Description
“Release Notes”
For each version of FileServ, the “Release Notes” contain:
• Summary of enhancements.
• Describes:
- Fixed problems.
- Known problems.
- Installation and configuration issues.
• Lists:
- Operating system patches.
- System requirements.
“Product Alerts”
Informs customers of technical problems and solutions.
“Product Bulletins”
Conveys technical information — not problems — to
customers.
To make corrections or to comment on FileServ publications,
please contact Software Technical Publications at our email
address: [email protected].
Contact
Publications
Department
To receive access to the secured site on our home page
containing technical product information, send email to
[email protected] and include your: name, company, address,
telephone number, fax number, FileServ serial number (or enter
“reseller” if you are not a customer), and your email address. In
return, we will send you instructions and a password.
Secured Web
Site
P-6
Preface
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Roadmap
Refer To
Chapter
Topic
Initialize FileServ, configure interface with
VolServ, perform start up and shut down, modify
system configuration, and tune system for better
performance.
1
Manage: DataClass Groups, files, migration,
data, and media.
2
Using the FileServ utilities.
3
4
Troubleshoot operating problems.
Note
For complete information on the FileServ commands used in
these tasks, refer to the Command Reference book. Status for
the commands used in these tasks is returned to the command
line.
Note
For complete information on the menus used in these tasks,
refer to the Using the FileServ GUI book.
1-2
System Tasks
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Running FileServ for the first time involves the following tasks
listed in the table below:
Initialize
FileServ
Task
Page
To access the host where FileServ has been installed to transfer
files to or from the migration directories, use one of the
following methods:
Access the
Host Server
•
•
•
UNIX Remote Copy Protocol (rcp)
File Transfer Protocol (FTP) session with put/get
UNIX copy (cp) with an NFS mounted file system
A remote login (rlogin) or a remote shell (rsh) must be used
to issue FileServ commands when not logged into the FileServ
host.
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After both FileServ and VolServ have been installed and
initially configured, drive pool and association of a MediaClass
group with a library must be established within VolServ for
FileServ communications.
Interface to
VolServ
Drive Pools
A drive pool is composed of a single drive or group of drives
that have the same capability. Drive pool names used within
FileServ must exist in VolServ before any data transfer
operations can be performed.
A drive pool is assigned a unique name to identify the drives or
system using the drives.
The system administrator can either specify a drive pool name
when adding DataClass group in FileServ, or can use the default
drive pool name found in the system parameter
VS_DEFAULT_DRIVEPOOL. The system administrator can also
limit a set of drives to a set of clients by creating different drive
pools and specifying the names of each drive pool for each
DataClass group associated with those users.
During FileServ installation, a drive pool name is created
containing all drives. The drive pool name is then added to
VolServ. The generated drive pool name is under FileServ’s
VS_DEFAULT_DRIVEPOOL parameter. If this name is not
configured in VolServ, all requests for data operations fail.
Several FileServ commands allow the user to specify a drive
pool using the -v option. If a drive pool name is specified, it
must either reside or be created within VolServ before any
FileServ commands can be executed.
1-4
System Tasks
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Associate
On SGI systems, there are fifty four MediaClass names. Each
MediaClass with
Library
MediaClass has the following form:
FileServID_mediatype_mediaclasstype
There are ten possible values for FileServ ID: F0 through F9.
The following mediaclasstype exist:
•
•
•
•
•
•
ADDBLANK or ADDBLNK
CHECKIN
IMPORT
DATA
MIGRATE
REMOVE
An example of a valid MediaClass name is
F0_D2S_ADDBLANK.
The FileServ installation script creates each of the MediaClass
names as a VolServ MediaClass group. After the FileServ
installation, the VolServ system administrator must associate
the appropriate FileServ default MediaClass names with the
appropriate library.
An example of valid MediaClass names that must be associated
with a library are as follows:
•
•
•
•
F0_D2S_ADDBLANK
F0_D2S_CHECKIN
F0_D2S_IMPORT
F0_D2S_DATA
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•
•
F0_D2S_MIGRATE
F0_D2S_REMOVE
Before FileServ can operate properly, the physical
configuration of the system must be defined within FileServ.
This procedure is accomplished during or after FileServ
installation.
Register the
Configuration
After installation, the system administrator is responsible for
associating all the drive devices configured in VolServ to
FileServ.
The fsconfig command provides hardware component
configuration.
Note
For more information on the fsconfig command, refer to
the Command Reference book.
To use FileServ to either migrate or archive data, directories in
various file systems must be associated with sets of parameters
that govern data migration characteristics. The migration
parameter set is known as a DataClass group.
Define
DataClass
Groups
A DataClass group is created and defined through the
fsaddclass command or Define Classes screen.
The DataClass parameters control the following:
•
•
•
Allocation of media.
Number of copies of file data that are stored.
Application of the data storage.
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•
Truncation policies for files and media types associated
with the DataClass group.
Note
For more information on the fsaddclass command,
refer to the Command Reference book.
After a DataClass group is defined, it can be associated with
directories in a file system so that files written to that directory
structure have their file data migrated according to the
parameters defined for the DataClass group.
Associate
Directories
Caution
Never associate the directories that contain the FileServ
executables with a class!
DataClass group association is implemented through the
fsaddrelation command or Define Class/Directory
Relations screen. Only files written to directories that are
associated with a DataClass group are subject to the migration
policy application of FileServ.
These files are stored using the fsstore command.
Note
Associated directories and files are unavailable when FileServ
is inactive. ADIC recommends that directories that contain
applications or login files not be associated.
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Before data can be copied from disk to tape, the tape media
must be in place. The media should be properly labeled and
entered into a storage subsystem by a VolServ operator before
entering media into the FileServ database.
Media Under
FileServ
Management
The fsmedin -b command is used to add blank media into the
FileServ storage subsystem.
The total quantity can be any number; a default value of 99 is
used if quantity is not specified. The total quantity should be
restricted to a number equal to or less than that entered into an
archive following VolServ installation.
The mediatype name should match the type of assets associated
with the library located at your site. Formatting each tape
requires about 1 minute for DLT and 3590 media, 6 minutes for
D-2S, 15 minutes for D-2M, and 35 minutes for D-2L. Use the
command below to format a tape.
% fsmedin -b -q quantity -t mediatype
If D-2 tape formatting is preferred, time is saved by changing
the $FS_HOME/sysparms/fs_sysparm_override file.
The FS_MAX_ACTIVE_FORMATS parameter has a default
value of 1, which means only one tape drive can be used at one
time for formatting. This value can be changed using an editor
to a number equal to the number of tape drives available for
formatting.
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Migration policies initiate movement of file data from disk to
tape.
Create
Migration
Policies
Tip
ADIC recommends that migration policies be applied on a
routine basis. Periodic application of migration policies is best
accomplished through the use of a crontab, to invoke many
routinely executed UNIX commands.
The following types of policy can be run:
•
•
Store data to tape (based on DataClass parameters).
Remove data from disk (based on disk space)
The fspolicy -s command is used to invoke the policy to
store data to tape. Eligibility for storage is based on the
DataClass parameters of class.
% fspolicy -s -c class
The fspolicy -t command is used to invoke the policy to
truncate data from disk after it has been stored to tape.
Eligibility for truncation is per file system filesystem and based
on the file attributes, such as last access date.
% fspolicy -t -y filesystem
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Part of the FileServ system routine processing includes:
Routine
Processing
Routine Tasks
Page
Policies for storage and for data truncation are run as part of
routine system processing. The standard method of running
routine operations is to have the operating system cron process
execute the operations. A root generated crontab is read and
registered with the ongoing cron process. The application of
migration and truncation policies is handled as part of this
process. The cron file contains many routinely executed by
UNIX commands.
Store and
Truncate Files
The database used by FileServ is an intricate part of the
software. Access to the database is controlled through a process
called the Lock Manager. The Lock Manager is started by the
FileServ system administrator. The startup script is called
lm_start and is located in the $FS_HOME/util directory. If
the Lock Manager is not running, FileServ will not start.
Database
Maintenance
To prevent data loss and improve FileServ performance,
periodic database maintenance must be performed.
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FileServ database maintenance is part of routine system
processing. FileServ uses a RAIMA database to store and track
information about the files under FileServ. The RAIMA
database is embedded within FileServ and automatically starts
when FileServ starts.
Periodic database maintenance is required to prevent data loss,
improve FileServ software performance, and simplify recovery
procedures if needed.
The following three utilities should be run on a periodic basis:
•
•
•
$FS_HOME/internal/chk_point/chk_point.pl
$FS_HOME/util/checkDBALL
$FS_HOME/util/keyBuildAll
chk_point.pl
The $FS_HOME/internal/chk_point/chk_point.pl
script checkpoints the RAIMA database (database recovery is
faster and more reliable when regular checkpoints are taken).
Checkpointing of the database is not automatically established
during FileServ installation. Therefore, checkpointing must be
placed in the crontab file by the system administrator and
executed according to parameters of crontab.
Also, checkpointing cannot be accomplished without having
Perl installed. Checkpointing should be done during low usage
times.
Since checkpointing is a snapshot of the RAIMA database,
taking regular checkpoints makes recovery of the database
faster and more reliable.
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When the checkpoint script runs, it tars the entire contents of
the FileServ database to a separate file system. After this
process is completed, it zeros out the journal file. If the
journaling file system becomes full, processing stops.
Therefore, it is important to checkpoint the database regularly
through a cron process.
Checkpointing can be written to the host computer disk or table,
but these files must not be placed under FileServ’s control.
checkDBALL
The $FS_HOME/util/checkDBALL script checks the
database consistency by validating the position of each record
occurrence and checking the integrity of deleted chains. The
consistency check verifies that the member and owner record
types are valid, the membership count is current, and the
doubley linked lists are properly formed.
The script also validates the existence of the key values
associated with each record and the key field in the data files.
For each key in the key file, the script reads the associated
record and checks to ensure that the key’s data field contents
match that stored in the key file. Finally, the checkDBALL
script performs a timestamp consistency check on the database.
The checkDBALL database script should always be run after a
host platform crash because FileServ may have been
performing a database transaction when the crash occurred.
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The table below shows the suggested database maintenance
intervals for each database utility.
Note
Although the terms “Normal Usage” and “Heavy Usage” in the
table header are somewhat subjective and may have different
definitions at different sites, in general, the checkDBALL
script and keyBuildAll script should be run every 100,000
storage, retrieval, modification, creation, and/or deletion of files
within the FileServ controlled DMAPI file systems.
Normal
Usage
Database Maintenance Script
Heavy Usage
$FS_HOME/internal/chk_point/chk_point.pl
$FS_HOME/util/checkDBALL
Daily
Daily
Monthly
Monthly
Bi-weekly
Bi-weekly
$FS_HOME/util/keyBuildAll
Although FileServ must be terminated, the Lock Manager
process must be active, to run the checkDBALL script. The
script may be run by either user fsadm or user root.
ADIC recommends that the output of the checkDBALL script
be redirected to a temporary file so that an analysis can be
performed after the script completes it’s execution. This is
accomplished as shown below:
# $FS_HOME/util/checkDBAll > temp_file_name
After the script completes it’s execution, the temp_file_name
file should be analyzed for any errors.
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keyBuildAll
The $FS_HOME/util/keyBuildAll script rebuilds all the
key files for the RAIMA database. Rebuilding the file keys is a
two step process that also rebalances the B-tree structure of the
database.
To rebuild the file keys, follow the steps below:
Step 1.
Step 2.
Reinitialize the file.
Sequentially reads each record is from each data file
record and recreates each key file is from the record
contents.
Run the keyBuildAll script if one of the following occurs:
•
•
If any errors were detected by the checkDBALL script.
Periodically, based on system usage. (check the system
usage in the previous table)
For instructions on file recovery or UNIX to FileServ
Database Utilities
There are 19 database utilities that allow you to add, modify,
delete and query a specific FileServ table.
The table utilities are: activefl, blockpos, cfgdir,
classdef, classdir, devdb, dirdb, exitinfo,
externmed, fileattr, filecmnt, filecomp,
filexpir, keytest, medbpos, mediadir, transdb,
trashcomp, and trashname.
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The utilities that operate on specific file systems are:
blockpos, dirdb, fileattr, filecmnt, filecomp
and filexpir.
Note
The one table utility that does not work like the others is the
keytest utility.
All of the utilities, with the exception of keytest, have two
modes:
•
•
Command Line Mode.
Interactive Mode.
Both modes are described below.
For both Command Line Mode and Interactive Mode, an
additional parameter called the device key is required before
running the utility. This parameter must be the first parameter
given to the command
Step 1.
To determine the device key, consult the devdb
table. An entry or output from the devdb utility may
look similar to the output shown below:
dvdmhdl
dvdmsz
:099c17edal7e8fd1
:8
device key
dvpath
:4
:/test2
Step 2.
Assume that you now want to check files on the
/test2 migration file system.
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First, you check the devdb table for the entry
containing /test2. Notice there is a field called
“device key” associated with /test2. This is the
value you will use for device specific table utilities
that are associated with the /test2 file system.
Step 3.
To look at the fileattr entries for the files on
/test2 and to send the output to a file called
test2.files, enter the following command:
# fileattr 4 -ftest2.files
Examine the file at your leisure.
Command Line
Mode
Command line mode queries only the specified table. In most
cases you need to enter only the utility name to call the query.
The utility queries the database for all records in that specific
table. The results appear on the screen, or you can redirect the
results to a file using the standard UNIX redirection command.
Options for most of the utilities are listed below:
Option
Description
-ffilename
Send all output to the specified filename.
Note: Do not put
a space between
the -f and the
filename.
-h
-i
Display a help screen
Run in interactive mode
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Option
-k key
Description
Query for a specific record key. A working
knowledge of the database internals is often
needed to provide the proper key.
Each table utility has a different requirement
for the key. For additional information, see the
HELP screen.
Interactive Mode
To start a utility in Interactive Mode, include the -i option on
the command line. If the-i option is used, FileServ ignores the
-k key option.
In Interactive Mode, a menu displays with options valid for the
specified utility. The following table describes the available
options.
Options
Description
a
Add a record. You can add a record to any table.
You will have the opportunity to change every field
and enter the record as you like. In some tables,
key fields are generated automatically and are not
part of the add record process. If you need to
change a key field, this can be done under the
modify process.
d
Delete a record. To delete a record, knowledge of
specific keys is required. Queries may need to be
performed in order to determine the specific key
the delete process requires before deleting a
record. Once the record is found, it is displayed for
confirmation before deletion. Be aware that in
some tables this will result in more than one
record for deletion.
e
I
End this program.
Retrieve record by class id.
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Options
Description
i
k
K
m
List class ids.
List class indices.
Retrieve record by class index.
Modify a record. Modifying a record requires a
specific key that corresponds to the record to be
modified Once the record is found, any field can
be modified including key fields. Modifying a key
field can result in a duplicate key for the table. In
such cases, the modification will fail.
q
Query a table. Each table has different fields that
are used for queries. There is no specific field that
each table is queried on. Some queries allow for a
sub menu, while other table queries have several
fields that can be queried.
r
S
v
Record count.
Set output destination.
View all records.
In addition, there is always an option to query on one or more
unique keys.
When entering an option, you may enter as many options on the
command line as you like. However, only the very first
character is accepted as the command. If that is a space, the
command is in error and nothing is done.
Frequency of Use
How frequency you should use these utilities depend on system
usage. It may be advantageous to make checkpoints more often
when FileServ database activity is heavy. Such activity
includes:
•
Addition or deletion of many migration directories.
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•
Heavy storage, retrieval, modification, creation, or deletion
of files in migration directories.
The advantage to taking extra checkpoints is that recovery from
database corruption is much faster and more reliable. However,
a checkpoint done during heavy system use takes longer and
can create serious performance degradation for FileServ
processes. By weighing these factors, the database system
administrator and the FileServ system administrator must
decide the time of day and frequency for each database
maintenance operation.
No matter how busy a system is, failure to perform database
maintenance on a regular scheduled interval increases the
chances of system downtime and loss of data.
Recover Database
If you have total database loss or corruption, a database
recovery will be necessary to recover the files under FileServ.
Step 1.
To recover the database, run the restore.pl
script located under
$FS_HOME/internal/chk_point.
The amount of time required for a recovery depends
on how large the FileServ database is and how large
the journal file is. If the checkpoints are made
often, the recovery process will go quickly.
Step 2.
After the restore.pl script completes, as root
type $FS_HOME/util/fs_recover without
parameters.
# su - root
# $FS_HOME/util/fs_recover
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Run this command only if the archived file systems
are newer than the restored database and the journal
files have been preserved. The restore.pl
command will not replace the old journal, so no other
preparatory work should be needed if the journal file
has been preserved. The journal file is located in
$FS_HOME/journal/fsdbjrnl.
Step 3.
On the other hand, if the database was lost, but the
current journal file is available, the database can
be brought up-to-date by running fs_recover.
Another command that must be routinely run is fsclean. The
fsclean command purges the FileServ trashcan information.
Trashcan
Cleanup
Caution
Using the fsclean command eliminates the ability to recover
files from the trashcan with the fsundelete command!
Precautions must be taken when using the fsclean command.
The trashcan serves as the repository for references to media
data that is deleted from the disk or modified. Each time a file is
modified, its tape copy becomes invalid. An entry is created in
the trashcan for the older version of the file. Also, when files
(containing current file copies on media) are removed (UNIX
rm), the trashcan receives an entry for each removed file.
Because of asynchronous processing, an fsclean performed
immediately after file removal may not completely clean the
media.
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Run a fsmedinfo -l report to verify all files deleted from
media. If files still exist, rerun the fsclean command.
Note
Execute the fsundelete command twice to make sure all
your required files have been undeleted.
The fsundelete command allows recovery of removed or
modified copies of files as long as an entry exists in the
trashcan. Only the primary copy is recoverable with the
fsundelete command. After fsclean is run for media, all
files on that media referenced in the trashcan are no longer
recoverable with fsundelete.
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The following startup modes exist for FileServ:
Startup and
Shutdown
•
Normal. A normal termination allows a request to continue
to a known processing state. When a normal termination is
unsuccessful, contact technical support personnel to assist
with the correction. If termination exits with a message that
the system abnormally terminated, contact the technical
support personnel.
•
Contingency. A contingency start is only recommended
when a normal start fails.
Both types of startup are described below.
A normal startup is performed following a graceful termination
of FileServ. A normal FileServ startup performs the following
tasks:
Normal Startup
•
•
Reinitializes the system parameters.
Performs command recovery processing using the recovery
processing information retained after termination.
To normally start or terminate FileServ, the system
administrator runs the FileServ command. This command
must be issued from a login to the host computer.
This command can also be included in a script that is run
automatically at the time of the host computer initialization.
The FileServ command will automatically starts FileServ
each time the server is restarted.
The licensed subsystems must be configured before startup or
FileServ will fail to start.
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The following messages display at the command line where the
FileServ command is run to indicate a successful initiation:
FS0338 FileServ: Request accepted
FS0277 FileServ complete: FileServ software is
running
During FileServ processing, software activity is continually
recorded in recovery processing files. These files are only used
during a normal startup. It is important to always attempt a
normal start after any termination of FileServ.
Recovery
Processing
Caution
If files that are migrated to media are actively being transferred
to disk at the time an abnormal software termination occurs, a
contingency start may corrupt the file data.
A normal start resets the active files to the original state before
starting the transfer. Files that are on media only and are being
retrieved are reset to being on media only. The request that was
active at termination must be reissued by the requestor.
A contingency start is only recommended when a normal start
fails. With the exception of initial startup at installation, never
attempt a contingency start without first attempting to perform a
normal start of FileServ.
Contingency
Startup
Note
A contingency start is used for first-time Initialization of
FileServ. For more information, refer to Installing FileServ.
A contingency start initializes certain log files and internal
directories but does not perform recovery processing.
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The recovery files cannot be used after a contingency start is
issued. If the user needs to save the recovery files for review at
a later time, move these files to another directory. Do not
rename the recovery files because the software deletes all files
found in the recovery file directories.
These activities allow FileServ to return to a known processing
state when a normal start cannot be performed.
Caution
All files in the recovery directory are deleted during a
contingency start. To retain files, move all recovery files to a
different directory.
Step 1.
Run the FileServ -c command.
% FileServ -c
FS0290 CAUTION! Contingency startup deletes recovery
processing files.
FS0284 FileServ contingency startup requested.
FS0290 Caution! Contingency startup deletes recovery processing
files:
FS0293…
FS0293…
FS0294 Are you sure you wish to continue? (y/<n>):
Step 2.
Press <RETURN> to cancel the contingency startup
or enter Y for yes.
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To ensure an orderly shutdown of FileServ, any processing must
be terminated gracefully.
Normal
Shutdown
All components must be shut down in the sequence as follows:
Step 1.
Step 2.
Step 3.
Step 1.
Shut down FileServ.
Shut down VolServ.
Shut down Ingres database software.
Run a system-wide broadcast message that states
FileServ will be terminated. Use the UNIX rwall
command to issue a message similar to the one
below to all hosts and their clients on the network.
FileServ services will be terminated in
n minutes
Step 2.
Step 3.
Repeat the broadcast before termination.
Run the FileServ -t command. The following
message is returned.
FS0285 Termination requested by user.
FS0294 Are you sure you wish to
continue? (y/<n>):y
Files being actively transferred to media, or from
media are completed. File transfer requests awaiting
resources are terminated and a request aborted status
is returned to the user.
All files are closed and cleanup is performed to
ensure that the system is in the proper state to allow
an orderly restart.
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Any media introduction or removal operations in
progress are interrupted. The requests resume and are
completed when a subsequent normal startup is
performed. The configuration states for the storage
library components are not changed during
termination.
Step 4.
Step 5.
Perform an orderly system shutdown only after
FileServ has terminated.
Enter the following command to make sure that
unwanted processes are not still running:
# ps -elf | grep fs_
# ps -elf | grep fsadm
Automate Software
Termination
FileServ terminates if the software is unable to perform a
commit or rollback operation on the database for a resident
FileServ process. Error messages are sent to the system logs and
console to indicate that FileServ is terminating because of a
database software error. When the database software problem is
resolved, bring up FileServ.
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For the proper execution of FileServ commands and operations,
the physical storage library configuration must be maintained in
the FileServ system and parameter files. The table below lists
the tasks that the FileServ system administrator can perform on
the system and files.
Managing
System
Configuration
System Tasks
Page
FileServ employs global parameters that define the system.
These parameters are located in files contained in the
$FS_HOME/sysparms directory, where $FS_HOME is the
directory where FileServ is installed.
Modify System
Parameters
FileServ parameter files can be edited to customize the software
The table below lists the configurable parameters:
Configurable System Parameters
Page
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Configurable System Parameters
Page
GeneralParameters
The fs_sysparm file contains parameters that control general
FileServ activities. The parameters in this file are grouped into
the following categories:
Category
Description
Page
System Administration
Used to tune system performance and media
usage.
FileServ Defaults
File Retention
Used with FileServ commands that allow
default value.
Used by the file comment keyword search and
file expiration daemons.
Installation
Established at the time of system installation.
Modified as required for software maintenance.
Software Maintenance
System
Administration
Parameters
The system administration parameters in the table below can be
changed to tune system performance and media usage. FileServ
must be cycled (using the FileServ -t and FileServ
commands) to pickup changes to these parameters.
Parameter
Default
Definition
NOMINAL_FILE_SIZE
5000000
Nominal file size in bytes to estimate
how many bytes of user data fit on
the remaining space on the media.
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Parameter
Default
Definition
FILE_LBL_FMT_TAPE
adic00000001
Defines the way data labels are
written to tape devices.
adic00000001 is ANSI standard and
writes data with tape marks between
the header labels and data, and
between data and trailer labels.
adic00000002 leaves off tape
marks. This is faster, but is not ANSI
standard.
FILE_LBL_FMT_DLT
FILE_LBL_FMT_RSP
FILE_LBL_FMT_8590
adic00000003
adic00000003
adic00000003
Defines the way data labels are
written to RSP-2150 devices.
adic00000001 is ANSI standard and
writes data with tape marks between
the header labels and data, and
between data and trailer labels.
adic00000003 leaves off tape
marks. This is faster, but is not ANSI
standard.
Defines the way data labels are
written to RSP-2150 devices.
adic00000001 is ANSI standard and
writes data with tape marks between
the header labels and data, and
between data and trailer labels.
adic00000003 leaves off tape
marks. This is faster, but is not ANSI
standard.
Defines the way data labels are
written to RSP-2150 devices.
adic00000001 is ANSI standard and
writes data with tape marks between
the header labels and data, and
between data and trailer labels.
adic00000003 leaves off tape
marks. This is faster, but is not ANSI
standard.
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Parameter
Default
Definition
DEFAULT_MEDIA_TYPE
DLT
Default media type used with
commands with optional media
types.
DEF_MED_SPC_3480
DEF_MED_SPC_3490
DEF_MED_SPC_3490E
DEF_MED_SPC_D2SM
DEF_MED_SPC_D2MD
DEF_MED_SPC_D2LG
DEF_MED_SPC_CTIII
DEF_MED_SPC_CTIV
220000000
400000000
800000000
25000000000
75000000000
165000000000
10000000000
20000000000
0.5
Default tape length of a 3480
cartridge in bytes.
Default tape length of a 3490
cartridge in bytes.
Default tape length of a 3490E
cartridge in bytes.
Default tape length of a D-2 small
cassette in bytes.
Default tape length of a D-2 media
cassette in bytes.
Default tape length of a D-2 large
cassette in bytes.
Default tape length of a DLT
cartridge in bytes.
Default tape length of a DLT
cartridge in bytes.
FS_EOT_SIZE_RESET_
FACTOR
Fraction of space available that will
be added to current write position
when physical End-Of-Tape (EOT) is
detected for systems utilizing 3490
media. Smaller fractions should be
used when fewer mounts and
performance for robotic utilization is
a priority. Higher fractions should be
used when tape utilization is a
priority. Valid range is 0.0 - 1.0. It is
recommended that this value not be
modified prior to contacting
technical support.
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Parameter
FS_MAX_ACTIVE_
Default
Definition
1
Maximum number of drives allowed
to perform tape formatting at one
time.
FORMATS
FS_MAX_ACTIVE_
MEDCHECKS
1
1
Maximum number of drives allowed
to perform media checking at any
one time.
STORE_LIMIT_NOTICE
If FileServ is started up when the
storage used is within this number of
GB from the storage limit, notice is
sent to FS_OWNER_ID.
FS_CALLOUT_SLEEP_INT
2
A file can be accessed by one
process at a time. This parameter
represents the time to wait (in
seconds) before the next retry if
callouts are suspended because of
a file busy. (For tuning, refer to note
in parameter
MAX_DMON_SUSP_ERRORS.)
MAX_DMON_SUSP_ERRORS
60 two-second
retries
Maximum number of retries in
response to a suspend failure. The
command sleeps between retries for
the number of seconds specified in
FS_CALLOUT_SLEEP_INT. A suspend
failure can occur for a file if:
•
The file has already received a
callout.
•
The maximum number of
suspends is already reached.
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Parameter
Default
Definition
(continued)
The FS_CALLOUT_SLEEP_INT and
MAX_DMON_SUSP_ERRORS
parameters can be tuned, if
recurring failures of multiple copies
of files are noted in the system logs.
This situation can occur in a backup
environment where the primary and
backup copies of large files are both
stored at the same time by issuing
the fspolicy command. The
default can expire on the second
copy of a large file while the first
copy is written to media.
Note: Run fspolicy -w to rebuild
candidate files.
For additional help in tuning these
parameters, call ADIC technical
support.
CONNECT_SLEEP_TIME
CONNECT_RETRIES
1
Time to wait (in seconds) before the
next retry if the IPC Connect request
fails.
120
Number of retries on IPC connection
failure. This is set by the factory and
is changed only by technical support
personnel.
MAX_READS
100
Number of retries on IPC receive
failure. Set the MAX_READS and
MAX_WRITES parameters to the
same number. This is set by the
factory and can be changed only by
technical support personnel.
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Parameter
MAX_WRITES
Default
Definition
100
Number of retries on IPC send
failure. The MAX_READS and
MAX_WRITES parameters are set to
the same number. This is set by the
factory and is changed only by
technical support personnel.
FS_DB_RETRY_COUNT
DMON_POLL_TIME
3
Number of retries on database
services failure because of
table-busy errors.
10
Time to wait (in 1/100 seconds) on
select poll for events on IPC queue.
This is set by the factory and can be
changed only by technical support
personnel.
MAX_RETRIEVE_RETRY_
COUNT
2
Maximum number of retries for any
retrieve operation. Each retry is
performed on a different file copy.
LOBLK_THRESHOLD
85
Percentage of used disk space
when reached initiates the overflow
utility to reduce the level of used
disk space down to the
HIBLK_THRESHOLD value.
HIBLK_THRESHOLD
84
60
Minimum level of used disk space
that the overflow utility maintains.
MAX_TAPE_TO_TAPE
_ALLOC_TIME
Maximum amount of time (in
minutes) that a Medcopy request
waits for resources. When this
threshold is exceeded, the request
fails. (Valid range is 1 through
10000.)
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Parameter
STARVATION_PERCENT
Default
Definition
50
Percent of
MAX_TAPE_TO_TAPE_ALLOC_TI
ME variable in which resources will
be obtained and not released until
all resources have been secured or
the time limit has been exceeded.
(Valid range is 1 through 100.)
FS_NICE_VALUE
n
If enabled, the FileServ process and
database resident process runs with
this n value. Refer to set priority (2)
for the value range of the system.
To enable, enter a value.
To disable, set the value to “0.”
FS_VS_QUEUE_XXX
_THRESHOLD
variable
Storage request threshold value
when surpassed, resource requests
are queued in the FileServ system
instead of the VolServ system. The
Value is 3x the number of drives
located in the system. For each
media type, there is a separate entry
required, e.g.,
FS_VS_QUEUE_D2S_THRESHOLD.If
the value is changed, it is
recommended that the sum of all
FS_VS_QUEUE_xxx_THRES-
HOLD values not exceed 100.
FS_THRESHOLD_INC_NUM
FS_THRESHOLD_DEC_NUM
5
1
Threshold increment number
variable. The value for the drive
failure level when an access to a
drive fails.
Threshold decrement number
variable. The value for the drive
failure level when an access to a
drive is successful.
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Parameter
FS_DRIVE_ERR
Default
Definition
20
Threshold value when equalled or
exceeded results in drives being
taken offline.
_THRESHOLD
FS_MAX_FILES_PR_3480
2000
95
Maximum number of files allowed on
a single 3480 cartridge tape.
PERCENT_FULL_TO
_MIGRATE
Percentage value used to check
against to determine if media can be
migrated.
File Copy Block Factors
FS_DISK_BLOCK_FACTOR
device-dependent Size of the following blocks is a
calculated optimum for each device
type.
10
Number of disk blocks used per
transfer when reading/writing the
disk. Parameter is normally
commented out. Use this parameter
with systems that have limited
memory. System performance is
degraded during file copies. Contact
technical support before activating.
FS_TAPE_BLOCK_FACTOR
1
Number of tape blocks used per
transfer when reading/writing a tape.
Parameter is normally commented
out. Use this parameter with
systems that have limited memory.
System performance is degraded
during file copies. Contact technical
support before activating.
FS_RSP2150_BLOCK
_FACTOR
4
Number of 2150 blocks used per
transfer when reading/writing the
2150. Parameter is normally
commented out. Use this parameter
with systems that have limited
memory. System performance is
degraded during file copies. Contact
technical support before activating
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Parameter
Default
Definition
CLEANUP_PROCESSING
100
Number of files processed per
transaction in the fsclean
command. If this value is set higher
than 100, the results can be
memory allocation problems and
increased processing time. 100 is
the recommended value.
FS_PRINTER_PATH
/usr/bin/lpr
Default printer used for printing
reports from the GUI.
MDM_POSITION_VALIDATION
YES
Enables validation of the tape
position prior to the first file in a file
set.
Default Parameters
The FileServ default parameters are used with FileServ
commands that allow defaults (fsaddclass and
fsmodclass). To change a default, modify this file, cycle
FileServ, then retry the command.
Review these parameters to verify that the applicable defaults
are site specific. Because the defaults are used when no specific
value is indicated in a command, these defaults are set to values
that are most often used. This allows increased use of the
defaults in the commands. Modify those values that are contrary
to a site’s specific operations. The following example illustrates
the type of issues for which it is beneficial to modify the
FileServ defaults.
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If the system administrator does not log on as root, change the
CLASS_USERID to default to the user ID of the user who is
available for mail notification of actions that are required by
FileServ.
Parameter
CLASS_USERID
Default
Definition
fsadm
Default userid. Any valid userid can be
used. This is the default for the E-mail
Notify ID.
CLASS_ACCTNUM
CLASS_SCODE
12345
NONE
8
Default account number. One to five
alphanumeric characters can be entered.
Default security code. One to four
alphanumeric characters can be entered.
CLASS_SOFTLIMIT
Default warning limit for the number of
media in a class. The warning is issued
when the number of media are allocated
to the class. The default number can be
changed when setting up the class.The
number can also be modified for an
existing class with the fsmodclass
command.
CLASS_HARDLIMIT
10
Default hard limit for a class. Additional
media is not allocated for the class when
this limit is reached. The default number
can be changed when setting up the
class by using the fsaddclass
command. The number can also be
modified for an existing class with the
fsmodclass command. The classes
value must be greater than the value for
the CLASS_SOFTLIMIT.
CLASS_MTIME
10
Default minimum time (in minutes) since
a file was last accessed. A file is eligible
for policy application (store or cleanup)
after mintime. The number can also be
modified for an existing class with the
fsmodclass command.
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Parameter
Default
Definition
CLASS_DEF_MEDIA_TYPE
DLT
Default media type (D2S, D2M, D2L,
DLT, 3480, 3490, 3490E, 3590,8590).
Depending on the platform used or a
manual system, modify the default to
media used. The number can also be
modified for an existing class by using
the fsmodclass command.
CLASS_FILE_SPAN
CLASS_FILE_CLUSTER
CLASS_MAX_COPIES
N
N
2
Default flag to allow file spanning media
(Y or N). The value can also be modified
for an existing class by using the
fsmodclass command.
Default flag to allow file clustering
(Y or N). The value can also be modified
for an existing class by using the
fsmodclass command.
Maximum number of copies allowed,
including the primary copy. A maximum
number of two copies is allowed for the
current version of FileServ. The number
can also be modified for an existing class
by using the fsmodclass command.
CLASS_DEFAULT_COPIES
1
Total number of copies stored to media
for each file in a class. Must not exceed
CLASS_MAX_COPIES. The number can also
be modified for an existing class by using
the fsmodclass command. The default
can be modified for a file by using the
fschfiat command, although the
number must not exceed
CLASS_MAX_COPIES.
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Parameter
Default
Definition
CLASS_FILE_CLEANUP
P
Default file cleanup action (I or P). When
a file is stored, cleanup can occur
immediately (I) after storing the file or at
policy application (P). The value can also
be modified for an existing class by using
the fsmodclass command. If the
sysparm value is not set to I or P,
FileServ defaults to P.
CLASS_MEDIA_CLEANUP
S
Default media cleanup action (C or S).
When media becomes logically blank,
the media can return to the class blank
media pool (C) or to the system blank
media pool (S). The value can also be
modified for an existing class with the
fsmodclass command. If the sysparm
value is not set to C or S, FileServ
defaults to C.
FS_EPSON_LABEL_PRINTER
CLASS_DRIVEPOOL
Default printer for printing external media
labels. Specifies the Epson printer that
generates the external top media labels.
To enable, contact technical support.
fs_F0drivepool Default drive pool (up to 16 characters).
Usually set to the same value as
VS_DEFAULT_DRIVEPOOL.
File Retention
Parameters
The following list shows parameters that are used by the file
comment keyword search and file expiration processes. To
change a value, modify this file, cycle the user interface, then
retry the command.
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A file will be retained on the disk based upon the
DEF_FILE_RETION_PERIOD or the
FILE_RETENTION_PERIOD value. The lowest value will
determine a file’s true retention period.
Parameter
Default
Definition
ADVANCE_NOTIFICATION_
PERIOD
30
Number of days in advance the DataClass
group manager is notified of the impending
expiration of files located in a DataClass group.
Valid range is from 1 and 32767 days.
DEF_FILE_RETENTION_
PERIOD
0
0
Time a file is kept on the disk. Valid range is
from 0 to 32767. If value is set to 0, the file will
be kept on disk indefinitely. If a value from 1 to
32767 is used, the file will be retained for the
number of days entered beyond the last access
date.
FILE_RETENTION_PERIOD
Time a file is kept on disk. Valid range is from 0
to 32767. If value is set to 0, the file will be kept
indefinitely. If a value from 1 to 32767 is used,
the file will be retained for the number of days
entered beyond the last access date.
VolServ-specific
Parameters
The following parameters are specific to the VolServ system.
FileServ must be cycled to pick up changes to these parameters.
Parameter
Default
Definition
FILESERV_ID
F0
A two-character unique identifier used to
differentiate the FileServ systems connected
to the same VolServ host. This identifier is
the prefix for all MediaClass names and drive
pool names.
VS_HOSTNAME
XXXXXXX
VolServ hostname to be used by this
FileServ system.
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Parameter
Default
Definition
VS_PROGRAM_NUMBER
XXXXXXX
If enabled, the VolServ program number to
be used by this FileServ system. To disable,
comment out the parameter.
VS_DEF_QUANTITY
99
Default media quantity for entry/exit port
operations. (Range 1-99)
VS_DEFAULT_DRIVEPOOL
fs_F0drivepool Default VolServ drive pool used for retrieves.
This drive pool contains all
FileServ-configured drive components.This
drive pool is used for media with no
DataClass group. Defined in terms of
FILESERV_ID.
VS_DIR
XXXXXXX
This parameter should point to the VolServ
environment for the fspic utility to run
logoffcomps.
Installation
Parameters
The following list shows the system parameters that are to be
established at the time of system installation. Use the FileServ
installation script for this purpose.
As a general rule, do not modify these rules unless the system is
completely reinitialized and reinstalled.
Parameter
Default
Definition
FileServ license string.
FileServ_LICENSE_STRING
FS_ADMIN_DAEMON_ID
2
3
FileServ daemon number (0-3) used for
administrative activities.
FS_DATA_DAEMON_ID
FileServ daemon number (0-3) used for
data activities.
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Parameter
Default
Definition
FS_DATABASE
fsdb
FileServ database name (1-20 chars).
The database maintenance scripts use
fsdb as the FileServ database name. If
this parameter is modified, these scripts
must also be modified.
FS_CONSOLE
/dev/console Identifies the device path for the FileServ
console.
FS_DEFAULT_SUBSYSTEM
V0
Default component ID only for the
fsmedin, fsmedout, and fsqueue
commands when the user does not
specify the subsystem on the command.
These parameters below set (UGO) permissions, owner, and group ID for any files created by
FileServ.
FS_FILE_MODE
511
UGO permissions for files created by
FileServ.
Decimal value
of octal
permissions
777.
FS_FILE_GROUP
FS_OPR_GROUP
FS_OWNER_ID
adicadm
adicopr
fsadm
Group ID for files created by FileServ.
Group ID for fs operators.
Owner ID for FileServ files and database
owner’s userid.
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Software
The following list shows parameters that can be modified as
Maintenance
Parameters
required for software maintenance. FileServ must be cycled to
affect the changes. These parameters are used to enable and
disable different types of message logging. These logs can be
used for debugging purposes. To enable logging, remove the
comment line indicators from the parameter(s) and recycle
FileServ.
Parameter
Default
Definition
COMMAND_LOGGING
y
Enables logging of user commands and status
to the fs_hist_21 file.
COMMAND_INFO_DETAIL
y
Removes the message number, priority, and
request identifier from the status returned to
the user.
COMMAND_EXTRACT_HEADER
FS_TRACE_MASK
n
If enabled, removes the message number,
priority, and request ID from the command
status back to the user. Does not effect
logging.
o
Controls generations of trace logs to the
/FS_HOME/tracelogs directories. Set Mask
according to which trace logs generate. Use
individually or in combination.
• k = KRPC messages
• i = IPC messages
• o = no trace logging performed
FS_TRACE_SIZE
8192
Record size limit (in bytes) for recording in the
trace logs.
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Media Stats
Parameters
The following list shows parameters that can be modified as
required, to collect media statistic information for each site.
FileServ must be cycled to pick up changes to these parameters.
Parameter
Default
Definition
TSC_LOG_MASK
e
Enables or disables various priorities of the tape
statistic logging. The following values can be used
in any combination:
•
•
e = error priority (always logged)
h = history priority
Logging Parameters
The following list shows parameters that can be modified, as
required, to choose logging levels for each site. FileServ must
be cycled for to affect changes. These parameters are used for
trace logging.
If trace logging is enabled through the FSLOG_OPTIONS
parameter, logs are sent to the trace log files. If trace logging is
disabled, then all trace-level logs are discarded.
Parameter
Default
Definition
FSLOG_OPTIONS
e
Enable the trace logging facility to the
/FS_HOME/syslog/trace directories.
• e = enable trace logging.
• - = no trace information is logged.
FS_LOG_LEVEL
YYYYYYYYY Controls which dynamic technical support logs are
sent to the fs_ATAC_11 file.
• NNNNNNNN = OFF levels 12-20
• YYYYYYYY = ON levels 12-20
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Parameter
Default
Definition
FS_FACILITY
1
Logging facility used for priority 0-7 messages
directed to the syslog. The configuration for the
syslog is in the
/etc/syslog.conf file. The following facilities can be
used with the FS_FACILITY parameter KEY (used
to direct messages to files):
• 0 = LOG_LOCAL0
• 1 = LOG_LOCAL1
• 2 = LOG_LOCAL2
• 3 = LOG_LOCAL3
• 4 = LOG_LOCAL4
• 5 = LOG_LOCAL5
• 6 = LOG_LOCAL6
• 7 = LOG_LOCAL7
For more information, refer to the man page for
syslog and syslogd.
FS_LOG_OPTIONS
pc
Log options for priority 0-7 messages that are
directed to the syslog. The following options can be
used in any combination with the FS_LOG_OPTIONS
parameter:
• p = LOG_PID
• c = LOG_CONS
• d = LOG_NDELAY
FS_INT_PERF_LOG
Y
Performance point logging:
• N= disables logging
• Y= enables logging
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Parameter
Default
Definition
FS_LOG_MASK
ui
The log mask used for priority 0-7 messages that are
directed to the syslog. The FS_LOG_MASK
parameter allows the “setlogmask” function to be
called with modifiable values. These options can be
used for the FS_LOG_MASK parameter, either
individually or with a’u’ appended to it.
• e = LOG_EMERG
• a = LOG_ALERT
• c = LOG_CRIT
• r = LOG_ERR
• w = LOG_WARNING
• n = LOG_NOTICE
• i = LOG_INFO
• d = LOG_DEBUG
• u = LOG_UPTO()
Example:
FS_LOG_MASK=e; implies
setlogmask(LOG_MASK(LOG_EMERG));
FS_LOG_MASK=ur; implies
setlogmask(LOG_UPTO(LOG_ERR));
Edit System
Parameters
Configurable system parameters are modified by editing the
FileServ system parameters $FS_HOME/fs_sysparm file.
Step 1.
Edit the fs_sysparm file using a text editor and
replace the existing value with a valid new value.
All entries must be in the format: name=value; with
no blank spaces around the equal (=) sign and each
value terminated with a semicolon (;).
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An example for the CLASS_MTIME parameter is
shown below:
rm CLASS_MTIME=10;
CLASS_MTIME=30;
Step 2.
Recycle FileServ by running the command below:
FileServ -t
Upon restart, a service utility is called by various
processes and routines to establish system parameter
values within the FileServ environment. This utility
reads the appropriate parameter file to gather the
parameter name and its value.
Step 3.
Restart FileServ as shown below:
FileServ
Although device configuration of the library hardware is
performed during system installation and setup, storage
subsystems or drive components can be added to or removed
from the FileServ system configuration.
Reconfigure
System Devices
Device configuration involves the allocation of device driver
files for all peripherals, including the following:
•
•
•
Disks
Libraries
Tape drives
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The UNIX device drivers provide the means to reconfigure
devices for the standard peripherals (disks and system console).
To reconfigure these components, refer to the applicable
platform manual.
Edit Devices with
fsconfig Command
After installation, the system administrator can add or remove
devices from the configured storage system.
The fsconfig command provides hardware component
configuration. By specifying the proper options and the
accompanying values, hardware components can be added,
modified, or deleted from the system to reflect the actual
physical configuration.
Note
The fsconfig command does not allow duplicate device
pathnames in the database.
For more information on the fsconfig command, refer to
the Command Reference book.
The component identifier is a required value to add, modify, or
delete hardware. When adding a new drive or subsystem
component, the component identifier, component type, and
component alias are required values. The component identifier
cannot be modified. When deleting a subsystem, the drives
must be deleted before the subsystem can be deleted.
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When adding or deleting a drive to the system, the system
parameter FS_VS_QUEUE_XXX_THRESHOLD value located
under $FS_HOME/sysparms directory must be updated for
each media type the drive supports. The entered value is three
times the total number of drives in the system. For example,
three drives exist in a library system, with a fourth drive to be
added. Because the drive supports D-2 media, the system
parameter file shows the following values for
FS_VS_QUEUE_XXX_THRESHOLD:
•
•
•
FS_VS_QUEUE_D2S_THRESHOLD = 9
FS_VS_QUEUE_D2M_THRESHOLD = 9
FS_VS_QUEUE_D2L_THRESHOLD = 9
The value for each supported media type is changed to reflect
the addition of the new drive (3x4 drives). If a drive is deleted
from the system, the value is changed to reflect the deletion of
the drive. If multiple drive types are used, it is recommended
that the sum of all FS_VS_QUEUE_XXX_THRESHOLD not
exceed 100.
Add a Library
Step 1.
Step 2.
Step 3.
If a new library is added to your site, add the license
string variable to the VolServ ENVAR file system
parameter file.
Add the drives in the new library to the FileServ
system configuration list with the fsconfig
command.
Contact technical support for detailed instructions
for adding or removing storage subsystems and
libraries to your storage system.
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Edit Device
Step 1.
Step 2.
Run the fsconfig command with the -a option to
add a new component to the ADIC system.
Use the appropriate options, as needed. For option
information, refer to the Command Reference book.
Delete a Device
Step 1.
Step 2.
Run the fsconfig -h componentID command
with the -d option to delete a device from the
configuration.
Use other appropriate options, as needed. For option
information, refer to the Command Reference book.
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Generate Report
Step 1.
Step 2.
Run the fsconfig command.
Use the -h option to show the configuration of all
component.
Or, use the -i option to show the configuration of
a specific component.
An example of the generated report is shown below:
% fsconfig
------------------------------------------------------------
Hardware Configuration Report Fri Jan 29 09:13:49 1999
Component ID:
V0
------------------------------------------------------------
Device pathname:
User Alias:
Component Type:
Device Type:
Drive ID:
N/A
VolServ
SUBS
N/A
10
Delay Time:
0
------------------------------------------------------------
Hardware Configuration Report Fri Jan 29 09:13:49 1999
Component ID:
V0,10
------------------------------------------------------------
Device pathname:
User Alias:
Component Type:
Drive Type:
/dev/er90/s0
ER90_DR1
DRIVE
ER90
10
Drive ID:
Delay Time:
0
------------------------------------------------------------
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Hardware Configuration Report Fri Jan 29 09:13:49 1999
Component ID:
V0,11
------------------------------------------------------------
Device pathname:
User Alias:
Component Type:
Drive Type:
/dev/er90/s1
ER90_DR2
DRIVE
ER90
Drive ID:
11
Delay Time:
1000
Drive Compatibility
The fsconfig command can configure various drives. The
following list shows the FileServ default drive values and the
various drives each default value supports along with the media
type. When adding a drive, this table should be referenced. The
tape media that came with your system may not include all
these types.
Drive Names
Supported Drives
Supported Media
Media Types
CTIII
DLT2000
DLT4000
DLT2000
DLT4000
CompacTape Type III
CompacTape Type III
CompacTape Type IV
CompacTape Type III
CompacTape Type IV
2.3GB MO disc
CTIII
CTIV
CTIII
DLT7000
MO5.25
3480
DLT7000
CTIV
MO525
HP2600FX
2.6GB MO disc
4480
3480 Cartridges
3480
3480
3480
M2483B (Fujitsu)
M2483H (Fujitsu)
3480 Cartridges
3480 Cartridges
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Drive Names
3490E
Supported Drives
4490E
Supported Media
3490 Cartridges*
Media Types
3480
3490E Cartridges
3490 Cartridges*
3490E Cartridges
M2483N (Fujitsu)
M2483ND (Fujitsu)
8590
3480
3480
8590
3490 Cartridges*
3490E Cartridges
8590 Cartridges
8590
* Only blank 3480 media can be written to. On the other hand, 3480 media containing data from
a 18-track drive can only be read.
Component state changes allow for timely maintenance and
diagnostics of a library component. When a library component
is taken from the online (ON) state to the offline state
(OFF), it is not available for usual FileServ operations. After
the specialized operations are performed, the component must
be returned to the online status.
Change
Component
State
The fschstate command allows the user to report or to
change the state of a drive component or storage subsystem.
Note
For more information on the fschstate command, refer to
the Command Reference book.
The fschstate command can be executed when FileServ is
active or nonactive. Only storage subsystems can be changed if
FileServ or VolServ is inactive.
Drive component changes require both FileServ and VolServ to
be active. Valid states are:
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•
•
•
•
•
UNAVAIL
MAINT
ON
OFF
UNKNOWN
Because FileServ and VolServ components work interactively,
changes in the drive components or storage subsystem are
reflected in VolServ.
If a component is taken to either the offline or
maintenance state, FileServ does not attempt any processing
with that component.
When a component is taken to a maintenance state, the
maintenance port is enabled and the Ethernet communications
link is disabled; whereas, the offline state is only a
logical state within FileServ.
After maintenance has been completed, change the component
state back to the online state for the component to be reused
by FileServ.
Using the fschstate command without any options generates
a report that shows all currently configured library components,
for example, drives, drive identifiers, and VolServ systems. The
report can be limited to a single component by specifying a
component alias.
Step 1.
Run the fschstate command and specify the
component alias of any storage subsystem,
component or drive in the library system.
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Step 2.
Step 3.
Use the -s option to indicate the required new state
of the component. Valid state entries are: UNAVAIL,
MAINT, ON, OFF, and UNKNOWN.
To receive a report on all configured storage
subsystem and drive components in the system, run
the fschstate command with out options.
Adding and deleting drives from an Automated Media Library
(AML) requires technical support assistance. The robot inside
the AML requires reteaching and the robotic database will need
to be update with special support equipment used by trained
ADIC technical personnel.
Add and Delete
Drives
After this is done, the drives can be configured by the system
administrator.
To add a drive, follow the steps below:
Step 1.
Performed by ADIC technical support.
•
•
Install drive in AML configuration.
Teach robot (teaching automatically updates the
robotic database).
•
•
•
Delete library.
Create new library.
Remap the library.
Step 2.
Step 3.
Performed by VolServ system administrator.
•
•
Define new tape drive and specify media type.
Associate new drive with VolServ library being
used by FileServ.
Log in as root user.
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Step 4.
Step 5.
Step 6.
Change directory to $FS_HOME (directory where
FileServ is located).
Source FileServ cshrc by entering source
.cshrc.
Execute the fsvsinstall script by entering run
/util/install/fsvsinstall and respond to
questions.
The fsvsinstall script prompts you for the
following information:
•
•
•
Enter VolServ library used by FileServ software.
Enter drive identifier to add to FileServ.
Enter component alias, device pathname, drive
type, and drive delay time for each drive
identifier.
Step 7.
Step 8.
Step 9.
Log out as root and log in as the FileServ system
administrator.
Verify the drives have been added to the FileServ
system by entering fsconfig.
Log out as the FileServ system administrator and log
in as the VolServ system administrator.
Step 10. Verify the drives have been added to VolServ by
querying the drive pool used by FileServ.
Step 11. Log out as the VolServ system administrator.
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The following parameters can be fine-tuned for better system
performance:
Fine-tune
Parameters
Parameter
Page
Drive allocation is affected by the following sets parameters:
Reallocate
Drives
•
Drive deallocation.
The deallocation parameters determine when a drive is
taken offline because of access errors. Drive
deallocation parameters are set by modifying the
appropriate system parameters. The system parameter file,
fs_sysparm, is located in the $FS_HOME/sysparms
directory.
•
Delayed dismount.
The delayed dismount parameters determine when media is
dismounted from a drive after a store or retrieve request is
processed. The delayed dismount feature allows
optimization of reallocation of media for another request in
the queue and, thus, can reduce mount/dismount time for
resource requests.
Step 1.
Using a text editor, open the fs_sysparm file
located in the $FS_HOME/sysparms directory.
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Step 2.
Modify any of the drive parameters identified in the
table below:
Parameters
Description
FS_DRIVE_ERR_THRESHOLD
Threshold value when
equalled or exceeded results
in drives being taken offline.
FS_THRESHOLD_INC_NUM
Threshold increment number
variable. Value for the drive
failure level when an access
to a drive fails.
Threshold decrement number
variable. The value for the
drive failure level when
access to a drive is
FS_THRESHOLD_DEC_NUM
successful.
Step 3.
Save and close the edited file.
The way data is written to tape is modified by editing the
appropriate system parameters that control:
Modify Tape
Usage
•
•
Estimated tape length calculations.
Data block size.
Step 1.
Using a text editor, open the fs_sysparm file
located in the $FS_HOME/sysparms directory.
Step 2.
Modify any of the default tape utilization parameters
identified in the table below:
Parameters
Description
NOMINAL_FILE_SIZE
Nominal file size in bytes. Used to
estimate remaining tape capacity.
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Parameters
Description
DEF_MED_SPC_3480
DEF_MED_SPC_3490
DEF_MED_SPC_8590
DEF_MED_SPC_CTIII
DEF_MED_SPC_CTIV
DEF_MED_SPC_D2SM
DEF_MED_SPC_D2MD
DEF_MED_SPC_D2LG
FS_DISK_BLOCK_FACTOR
Default 3480 tape length in bytes.
Default 3490 tape length in bytes.
Default 8590 tape length in bytes.
Default CTIII tape length in bytes
Default CTIV tape length in bytes.
Default small D-2 tape length in bytes.
Default media D-2 tape length in bytes.
Default large D-2 tape length in bytes.
Number of disk blocks to use per transfer
when reading/writing the disk (default =
10).
FS_TAPE_BLOCK_FACTOR
Number of disk blocks to use per transfer
when reading/writing a tape (default = 1).
FS_RSP2150_BLOCK_FACTOR
Number of 2150 blocks to use per transfer
when reading/writing the 2150 (default =
4).
Step 3.
Save and close the edited file.
Step 1.
Step 2.
Open the crontab file.
Redirect Policy
Applications
Modifying the list of DataClass groups where the
policies is applied.
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Roadmap
Refer To
Chapter
Topic
Initialize FileServ, configure interface with
VolServ, perform start up and shut down,
modify system configuration, and tune system
for better performance.
1
Manage: DataClass Groups, files, migration,
data, and media.
2
Using the FileServ utilities.
3
4
Troubleshoot operating problems.
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Files controlled by FileServ are segregated into DataClass
DataClass
Management
groups. A DataClass group contains a unique set of parameters
that govern the migration behavior of the directories that are
associated with the class.
The figure below depicts directory-to-DataClass relationships:
The DataClass PRODUCT contains all files under the
/prod/dev and /prod/doc directories, but none under the
/prod/misc directory. This shows that some directories at a
certain level may not be related to a DataClass group.
/
prod/
other/
test/
PRODUCT
doc/
misc/
dev/
proc/
SPECIAL
TESTERS
build/
special/
private/
dir/ … dirn/
file1 … filen
public/
The test/proc/special directory is
the only association directory point
for the DataClass SPECIAL. All
files beneath /test/proc/special are
managed together.
dir/ … dirn/ file1 … filen
dir/ … dirn/
All files under /test/build and /test/proc/public belong to DataClass
TESTERS. This illustrates that the assignment of migration directories
to a DataClass group is not restricted to a certain level in the tree
structure. Thus, migration directories from different file systems can be
associated with the same DataClass identifier.
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Migration policy parameters are configurable on a DataClass
group basis, which provides the FileServ administrator with
control over the behavior of the FileServ system. The minimum
time required on disk before migration and file cleanup action
are examples of DataClass migration policy parameters. Quotas
for media usage (both a soft warning limit and a hard limit) are
also kept on a DataClass group basis. DataClass group
parameters are recorded so that tuning is accomplished while
the FileServ system is active.
FileServ uses DataClass groups as the means to segregate files
on media. All files on media are of the same DataClass group.
This provides a level of physical security for those sites for
which it is required. This segregation ensures that retrieval of
files from different user groups (as defined by the DataClass
group parameters) does not require access of the same physical
media.
Characteristics of DataClass groups are established and
modified so that data is handled differently among DataClass
groups. Initially, configuring or changing the parameter settings
for DataClass groups involves DataClass manipulation. This
allows flexible handling of data to suit the user’s needs.The
table below lists the tasks performed on DataClass groups:
DataClass
Groups
Topic
Page
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Note
All GUI class operations are run from ADMIN-> Define Class
->Create Groups or with the fsaddclass command.
To create a DataClass group, follow the steps below.
Tip
A DataClass group must be defined before directories can be
associated with it.
Step 1.
Step 2.
To verify the parameter settings before attempting
any modification, use the fsclassinfo command
to view the DataClass group parameters.
Run the fsaddclass command and specify a
DataClass group name.
% fsaddclass prodclass
Step 3.
Use other appropriate options, as needed. For option
information, refer to the Command Reference book.
Modify Group with
fsmodclass Command
The fsmodclass command modifies DataClass group
parameters.
Note
For more information on the fsmodclass command, refer to
the Command Reference book.
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Step 1.
Step 2.
Run the fsmodclass command and specify a
DataClass group name.
% fsmodclass prodclass -n joe
Use fsclassinfo to compare each DataClass
group parameter. Then either change the class
parameters for the new class to allow spanning or
change the class parameters for the old class to
disallow spanning.
- Specify oldclass.
- Specify newclass (newclass name cannot be the
same as oldclass name). The directories
associated with oldclass become associated with
newclass, and oldclass is deleted.
% fsclassrnm prodclass iradclass
Rename Group with
fsclassrnm Command
The fsclassrnm operation allows the name of a DataClass
group to be changed.
Note
For more information on the fsclassrnm command, refer to
the Command Reference book.
All files and media associated with the previous DataClass
group still exist in the new DataClass group. If the new
specified DataClass group already exists, the previous
DataClass group is merged into the new DataClass group. No
restrictions exist when merging two DataClass groups. If two
DataClass groups use different media types, the merge still
occurs.
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Remove Group with
fsrmclass Command
The fsrmclass operation removes a DataClass group and its
parameters from FileServ.
Note
For more information on the fsrmclass command, refer to
the Command Reference book.
This procedure also deletes the directory-to-DataClass
associations that involve the specified DataClass group. Empty
all directories in the DataClass group before the fsrmclass
operation is executed. If any association point directory is not
empty, the directory is not deleted and remains in the file
system unassociated with any DataClass group. A status
message is displayed that indicates the directories are, or are not
successfully removed. The UNIX command, rmdir, is used to
delete the directory from the UNIX system.
Generate Reports with
fsclassinfo Command
The Class Information Report displays DataClass groups and
parameters.
For the specified DataClass groups, the fsclassinfo
command or Class Information screen lists the parameters
and the points of each DataClass association.
Note
For more information on the fsclassinfo command, refer to
the Command Reference book.
The long format of the report shows a listing of
directory-to-DataClass association points. The long option
gives the DataClass group and its parameters, followed by a list
of directories associated with each DataClass group.
The short report is the default and lists each specified DataClass
group and all its parameters.
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If no class is specified, a short report on all DataClass groups is
generated.
The generated report is sent to stdout but can be redirected to
a file or piped to a printer.
The output of a long report is shown below:
% fsclassinfo low_twr6 -l
---------------------------------------------------------------
Class Information Report Sun Jan 31 14:18:03 1999
Class ID: low_twr6
---------------------------------------------------------------
Soft Limit:
Hard Limit:
80
95
Max Copies:
Media Type:
2
D2S
Notify ID:
adic
1CPY
PTRU
fspool
1
File Spanning:
File Cleanup:
Media Cleanup:
File Clustering:
Mintime (min):
n
Security Code:
Account Number:
Drive Pool:
IMMEDIATE
SYSTEM
n
1
Default Copies:
Associated Directories:
/arch1/low_twr6
/arch3/XLfiles/low_twr6
FS0000 31 174105 fsclassinfo completed: Command Successful
The table below describes the report’s fields:
Field
Soft Limit
Description
Number of media used for the DataClass
group.
Hard Limit
Number of media allocated for the
DataClass group.
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Field
Notify ID
Description
E-mail address where notification is sent
when the soft limit or hard limit is
reached.
Security Code
Account Number
Drive Pool
Four-character DataClass group security
code.
Five-character DataClass group account
number.
Name of drive pool associated with the
DataClass group.
Default Copies
Number of copies stored on media.
Note: The Default Copies parameter
defines the required number of copies that
must be made.
Max Copies
Maximum number of copies allowed for
each file associated with the DataClass
group.
Media Type
Media type for the DataClass group.
File Spanning
Indicates whether file spanning of media
is enabled for the DataClass group.
File Cleanup
Media Cleanup
File Clustering
Mintime
File cleanup action for the DataClass
group.
Media cleanup action for the DataClass
group.
Indicates whether file clustering is
enabled or not enabled.
Minimum time (in minutes) a file must
reside on disk before being eligible for
storage, or for removal from disk if all file
copies reside on media.
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Migration directories are defined by associating directories with
a DataClass group. A DataClass group is associated with one or
more directory paths. This association is defined as a relation
between the DataClass group and the directory. The directory is
known as the association point. Relations are added and deleted
in a file system.
Manipulate
Relations
The table below lists the tasks performed on DataClass
groups:
Topic
Page
Note
All GUI relation operations are executed from ADMIN->Define
Class/Directory Relations.
Add Relations with
fsaddrelation
Command
A relation is added with the fsaddrelation operation.
Note
For more information on the fsaddrelation command, refer
to the Command Reference book.
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This procedure allows you to associate a DataClass group
definition with a directory. All files and directories beneath the
association point are included in and governed by the DataClass
group parameters.
To add a DataClass group association to a directory, it must not
be superior to or subordinate to any directory that already has a
Directory-to-DataClass relationship.
If the subdirectories already have the same DataClass
relationship, the association point can be rolled up. For more
DataClass association point cannot be a directory in the root
file system unless it is a mount point for a new file system.
The DataClass group associated with a directory also
determines the media to which the files in that directory is
migrated. The files in a migration directory are only migrated to
media that contain files with the same DataClass group
association.
Associate New Data
with New Relations
After adding a new relation, run the fsdump command to
associate any new data with the new relation (the new mount
point).
Caution
Failure to run fsdump after adding relations may impact
system performance.
The fsdump command creates an fs_dump.file that
contains an entry for each associated directory and stored file in
the file system. The fsaudit command uses the
fs_dump.file to reconcile the restored files from the dump
tape and the FileServ database.
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Associate New
Directories with Files
Files can be present in a directory when the fsaddrelation
is performed.
Creating a directory under a directory that is an association
point automatically associates the newly created directory with
the DataClass group of its parent directory.
Note
When adding a DataClass relation to a directory that contains
files, no users are allowed in the file system at the time the
command is issued or the command fails.
Returned status shows that the file system is busy. A file system
must be inactive because it must be unmounted, mapped, and
remounted at the time of the fsaddrelation to ensure that
associated file information is accurate upon completion.
The file system is mapped by unmounting the file system and
remounting it exclusively for the mapping process. It is
recommended to perform the fsaddrelation to a populated
directory during a slack time. Users cannot access any files in
the file system during the fsaddrelation processing.
Following the mapping and execution of the fsaddrelation
operation, the file system is unmounted and remounted to allow
user access again.
Because the fstat options are limited, list all open files and
grep the major and minor device numbers of the file system to
check for users. On SGI systems, the user can run the fuser
command to find the same information.
Note
For more information about major and minor device numbers,
refer to the manual page for the UNIX fstat or fuser
commands.
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Major and minor device numbers are not necessary. Instead, use
the device name of the file system as listed by the UNIX df
command.
Legal Directory-to-DataClass Relationship
/dir1
dir2
dir6
dir8
DataClass A
dir9
dir3
dir4
dir5
DataClass B
Illegal Directory-to-DataClass Relationship
/dir1
dir2
dir6
dir8
DataClass A
dir9
dir3
dir4
dir5
DataClass B
DataClass A cannot be associated with dir2 because its
subdirectory dir5 is already associated with DataClass B.
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Below is an example of the df command. In the example, the
numbers given by fuser are processes accessing files in /tst1.
To get more information on the process, use ps -elf and
grep for the process number.
% df
Filesystem
/dev/root
/dev/usr
Type blocks
efs 205614
efs 2068050 1678616 389434 81% /usr
use
avail %use Mounted on
46958 158656 23% /
/dev/dsk/dks1d1s2 efs 5680906 4089070 1591836 72% /fs
/dev/dsk/dks3d3s0 xfs 1949616 1103528 846088 57% /lst1
%fuser/dev/dsk/dks3d3s0
/dev/dsk/dks3d3s010620co 11762c 10738co
Example
Step 1.
Step 2.
Use the UNIX ls command to verify that the
directory to be associated already exists.
% ls
data
irad
If the directory does not exist, use the UNIX mkdir
command to create the directory. The specified
directory cannot be a directory in the root file
system unless it is a mount point for a new file
system.
% mkdir production
% ls
data
irad
production
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Step 3.
Verify that the DataClass group is defined by using
the fsclassinfo command.
Note
The fsclassinfo command displays
information for all DataClass groups.
Step 4.
Step 5.
class operations are run from ADMIN-> Define
Class ->Create Groups or with the fsaddclass
Run the fsaddrelation command and specify
the DataClass group and directory to be
associated.
% fsaddrelation production -c england
Note
The entire path name need not be entered. The
directory path is resolved using the current
working directory. The directory notation, “.”
(current directory) and “.” (previous directory), can
be used.
Step 6.
After adding a relation to a directory, the directory’s
file system is dumped so that the parent directory of
the relation point is present in the dump file. If
several relations are added to the file system, the file
system dump is performed after all the relations are
made.
% fsdump -f /arch1/site1_production.dumpfile /site1/production
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Remove Relations with
fsrmrelation Command
A directory-to-DataClass relationship is removed and the
directory is made a nonmigration directory by using the
fsrmrelation operation.
Note
For more information on the fsrmrelation command, refer
to the Command Reference book.
Removing a DataClass relationship from a directory causes it to
be a nonmigration directory by FileServ. Therefore, files that
are copied, saved, or moved into this directory by users (after
the directory is disassociated from a DataClass group) are not
migrated to media. The relationship is restored, and the
directory is made migration by using the fsrmrelation
operation.
Before issuing the fsrmrelation operation, all files and
subdirectories in the association point directory must be deleted
or moved so that the directory is empty. Directories are not
deleted by fsrmrelation.
Step 1.
Run the fsrmrelation command.
Note
The directory must be empty before the
fsrmrelation command is allowed. If the
directory contains files or other subdirectories, the
fsrmrelation command fails.
Specify the name of the directory to disassociate.
% fsrmrelation production
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Change Relation Points
Association points are moved up or down in the file system
hierarchy tree from their original definition with the fsrollup
and fsrolldown commands, or Define Class/Directory
Relations menu.
This is a useful operation in adjusting the size and
manageability of migration directory structures associated with
DataClass identifiers.
Roll Up DataClass
Groups
The common parent directory of one or more association points
in a DataClass group is included in the DataClass group using
the fsrollup command.
Note
For more information on the fsrollup command, refer to the
Command Reference book.
This causes FileServ to associate the specified directory in the
command with the DataClass group of its subordinate
directories. The entries in FileServ that associate the
subordinate directories with the DataClass group are removed.
The specified directory becomes an association point in the
DataClass group. If the specified directory includes either
subordinate directories associated with a different DataClass
group, or nonmigration directories, the fsrollup command
fails.
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In the figure below, the fsrollup command fails to roll up to
dir1 from dir2 because dir6 is not a migration directory.
/dir1
dir6
Before Rollup
dir2
DataClass A
dir7
dir3
dir4
dir5
DataClass A
/dir1
dir6
After the command
fsrollup /dir1/dir2
dir2
DataClass A
dir3
dir4
dir7
dir5
The fsrollup function is performed on only one hierarchical
directory level at a time. Roll up of a DataClass group to a
directory that is two or more levels above an upper boundary
directory of the DataClass group is not allowed. The user
cannot roll up past a file system mount point. The specified
directory contains only subordinate directories and no other
files.
Perform this adjustment before many files are stored to the
directories.
Step 1.
Verify that the rollup does not cause contention with
other migration directories
Step 2.
Run the fsrollup command.
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Step 3.
Specify the name of the directory to be rolled up to
(the new association point).
% fsrollup production
Note
All subordinate directories of directory must be in
the same DataClass group. The directory
specified in directory can only contain subordinate
directories and no other files
Roll Down DataClass
Groups
The DataClass association point directory level is changed
using the fsrolldown command.
Note
For more information on the fsrolldown command, refer to
the Command Reference book.
A directory at the association point of the DataClass group is
excluded from the DataClass group by specifying it in the
fsrolldown command. This causes each subdirectory of that
directory to become an association point for the DataClass
group. The specified directory no longer maintains a
directory-to-DataClass relationship and, therefore, is a
nonmigration directory. The specified directory contains only
subordinate directories and no other files. When rolling down a
directory, files must be moved into directories before the
command is invoked. It is preferable to perform this adjustment
before many files are stored to the directories.
The association is only rolled down to an association point for
each directory under the original association point. The Roll
Down operation is performed on only one hierarchical directory
level at a time.
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FileServ does not permit you to roll down to a directory that is
two or more levels below an association point of the DataClass
group.
Before Rolldown
/dir1
dir2
dir6
DataClass A
dir3
dir4
dir5
/dir1
dir2
dir6
dir7
After the command
fsrolldown /dir1/dir2
DataClass A
dir3
dir4
dir5
A new
nonmigration
directory can
be added
following the
rolldown.
Step 1.
Step 2.
Ensure that no regular files are in the specified
directory. The only nodes are subdirectories, as these
each become new association points.
Run the fsrolldown command. Specify the name
of the directory to roll down (the old association
point).
% fsrolldown production
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Note
The directory specified in directory can only
contain subordinate directories and no other files.
Generate DataClass
Report
While DataClass relation points are listed in the long format of
the Class Information Report, individual directories at any
position in the file system can be checked for their DataClass
relationship with the fsdirclass command or Directory
to Class Information screen.
Note
For more information on the fsdirclass command, refer to
the Command Reference book.
The Relation Information Report displays the class associated
with the specified directory. If the specified directory is not
associated with a class, FileServ returns an error message.
Step 1.
Run the fsdirclass command. Specify the
name of the directory to be examined.
Step 2.
An example of the output is shown below:
% fsdirclass /production
FS0070 02 03881 fsdirclass completed:
/production located in class england.
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File management tracks file information, requests file copies,
and controls disk space of files under FileServ control.
File
Management
The table below lists file topics:
Topic
Page
The directories and subdirectories under a migration point must
have a full path name less than or equal to 255 characters.
Pathname
Note
If a directory name is created with greater than 255 characters,
the system administrator receives a caution on the console
and logfile to immediately remove the directory. Files in this
directory cannot be stored.
FileServ supports hard links and soft links.
Links
Note
A hard link can be created after a file is stored or the
fschfiat command is performed on the file.
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When hard-linked files are stored and retrieved, the common
file data is stored or retrieved for all of the links, no matter
which file name is submitted with the fsstore command.
The return status for the operation lists a file name of any one of
the links and not necessarily the file name submitted as an
argument with the command. If a different linked file name is
returned in the status, the file data was correctly handled.
FileServ prevents hard links between files across DataClass
boundaries.
Symbolic links can cross DataClass boundaries and file system
boundaries.
Tip
ADIC does not recommend you use symbolic links across
DataClass groups.
The DataClass parameters that control the original file are the
DataClass groups of the file links, regardless of the location.
Soft links that cross DataClass groups are misleading, because
the file data can actually reside in a different class.
FileServ supports file spanning across media. If a file is larger
than a single piece if media, the file will span to another piece
of media until the entire file is stored.
Spanning
A file that spans multiple media always starts at the beginning
of each additional media required to store the file. The file is
stored on media until all available space is used, the remaining
part of the file (spanned portion) is stored on a blank media. If
the file overflows another media, another blank is used until the
entire file is stored.
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File spanning is enabled or disabled for each DataClass group
by the fsaddclass command. The fsmodclass allows
modification of DataClass group processing parameters while
the fsfileinfo command reports all the locations of the
spanned file.
FileServ supports file clustering. File clustering is the
accumulation of files associated with a DataClass group. When
these files are stored on media, they are seen as one logical file.
Any file in a cluster is retrieved as any other non-clustered
FileServ file.
Clustering
File clustering can be defined when adding a DataClass group
to the file system (fsaddclass) or by the fsmodclass
command. File clustering offers two advantages over individual
file storage. The first advantage is the media space saved when
clustering. The amount of space consumed by a cluster of files
is less than the space used if files are stored individually. The
second advantage is that the amount of time to store a cluster of
files is less than the sum of the time required to store each file
separately in the cluster. Clustered file information is sent in
one continuous stream of data to the drive for storage on media.
Unclustered files require the drive to stop, insert tape marks,
file labels, and perform database updates for each file, which
results in increased storage time.
The system administrator controls the maximum size of the
files to be clustered and the clustered file size for all supported
media types.
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The cluster.config file, located under the
FS_HOME/sysparms directory, controls file clustering
parameters. Each DataClass group is added to this file and the
applicable file size values are entered (file sizes are expressed
in millions of bytes). If the DataClass groups are not added, the
filesize.config default values defined in the file are used.
The file is read each time a list of files is marked for storage.
This file is dynamic and enables the system administrator to
make changes without recycling FileServ.
########################################################################
# Copyright 1999 ADIC, Inc.
#############################################################################
#
#This is a FileServ file for clustering configuration
#control to be applied by the store policy code
#
#Any line that starts with a "#" is considered a comment
#
#Each entry should have the following, in order, and blank separated:
#
#- Class name
up to 16 characters)
#- Max file size to cluster (any file larger than this will NOT
be part of a cluster)
#- D2 cluster size
#- 3xxx cluster size
(largest clustered file size for D2)
(largest clustered file size for 3490,
3490E,3480,and 8590 media types)
#- Metrum cluster size
#- DLT cluster size
#
(largest clustered file size for Metrum)
(largest clustered file size for DLT media
types which include CTIII and CTIV
# All the above sizes are in millions of bytes
#
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#########################################################################
#The following is a sample line which has been commented out
#myclass
#
30 1000 30
50 150
#########################################################################
#
# Never ever change the entry for default unless specifically
# directed by technical support personnel.
#############################################################################
#
# $LOG$
#
######################################################################
# $Id: cluster.config,v 5.1.0.2 1999/06/21 19:41:14 johnb Exp $ $ADIC
*
#######################################################################
<default>
20
1000
30
50
150
Files that reside in directories associated with a DataClass
group have two types of attributes:
Modify File
Attributes
•
Attributes that specify the number of copies of the file to
store.
•
Attributes that designate how policy is applied.
The default setting for these attributes are acquired from the
DataClass group defaults set by the system administrator when
the DataClass group is defined.
DataClass group attributes are modified on a file-by-file basis
using the fschfiat command.
Note
For more information on the fschfiat command, refer to
the Command Reference book.
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Files can then share DataClass group parameters with other
files in the DataClass group. These files deviate in how policy is
applied and in the number of copies of that file that are allowed
on media. The fschfiat command allows fine tuning of the
file’s attributes without changing the characteristics of the
entire DataClass group.
For example, the common home directory files .cshrc and
.login, are used each time a user logs into the system. However,
they are excluded from the cleanup policy application to avoid a
delay during the login process.
For example, the fsstore -f i (truncate immediately after
storing) or -f p (truncate according to the policy application)
options cannot be used if the file is excluded from truncation.
Step 1.
Run the fschfiat command.
Use the appropriate options, as needed. For option
information, refer to the Command Reference book.
Step 2.
Verify the change by running the fsfileinfo
command.
% fschfiat -i test1
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To view information about file location and attributes, follow
the steps below:
Generate
Report
Step 1.
Run the fsfileinfo command, specifying the
names of the files you want reports on.
Step 2.
For files stored on media, this report returns an
identifier for each media where the file is located.
Each media ID is accompanied by a number that
represents which copy of the file is on the media. An
example of the output is shown below:
% fsfileinfo /arch1/heavy_twr1/small_010316_1/small_1
------------------------------------------------------------
File Information Report Wed Feb 3 14:10:12 1999
Filename: /arch1/heavy_twr1/small_010316_1/small_1
------------------------------------------------------------
Creation time:3-Jan-94 16:09:40
Owner:
Group:
Access:
Class:
Trunc:
testa
mss
664
heavy_twr1
IMMEDIATE
File size:
Location:
Existing Copies:
Target Copies:
776839
TAPE
2
2
Media:
TST0917(1) TST0909(2)
(1 = primary, 2 = secondary)
FS0000 03 203981 fsfileinfo completed: Command Successful.
Field
Owner
Description
Group
DataClass group governing the
file.
Access
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Field
Description
Class
Trunc
Identifies whether the file is a
candidate for cleanup policy
application.
File size
Location
Size in bytes.
Identifies whether file resides on
disk, tape, or both.
Existing Copies
Target Copies
Number of copies of the file that
currently exist.
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A migration directory is controlled by FileServ (for example, a
directory that has a DataClass association.) Files stored under
this directory, as well as any subsequent subdirectories, are
migrated from disk to media as specified by the DataClass
parameters.
Data
Migration
A DataClass group can be created so that files of associated
directories exhibit certain distinctive migration behavior. These
behaviors are controlled by a combination of setting the:
•
•
•
File Cleanup.
Minimum Time parameters.
Policies.
These are described below.
After a file is copied to media (migrated), the disk copy of the
file remains or is removed from the disk. The fschfiat-e
command allows a file to remain on the disk indefinitely.
File Cleanup
The file retention for the DataClass group definition defines
how a disk copy is removed. By setting this parameter to
immediate, after a file is known to contain the required number
of copies on media, the disk copy is immediately removed. By
setting the parameter to “policy application”, the file
remains on disk even after the required number of media copies
exist.
The amount of time the file remains on disk after storage is
partially determined by setting the DataClass Minimum Time
Parameter (mintime). As long as the file system contains
empty disk space (as set by the LOBLK_THRESHOLD in the
fs_sysparm file on SGI systems), the file remains on disk
until the Minimum Time interval passes.
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The mintime is the minimum amount of time after the file is
written or read before any policy action is taken. The mintime
determines eligibility for file storage and for file removal from
disk. For the cleanup policy, mintime is calculated as the time
elapsed after a file was stored on media before being removed
from disk.
Minimum Time
Parameters
Setting both the File Cleanup Action and Minimum Time
parameters tend to keep available disk space high by freeing
disk blocks as soon as possible (the immediate setting). These
parameters keep active files available on disk as long as
possible, thus freeing disk space as files become inactive.
Note
In this case, active means frequently accessed.
However, setting the File Cleanup Action and Minimum
Time parameters does not establish the DataClass migration
behavior of the files.
Rather, the planned execution of migration and disk cleanup
policies as well as the DataClass characteristics provide the
overall migration behavior for DataClass groups.
Migration management includes the application of storage and
cleanup policies using the fspolicy command with various
options. Changing the overflow parameters in the fstab file
also affects migration.
Policies
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Migration and disk cleanup policies are implemented in the
following policies:
Topic
Page
Storage Policy
Storage policy is used to migrate eligible file data to media.
When the policy is initiated, a list is generated to identify the
files that must be stored to media. The list contains files that do
not have a current set of media copies and are not accessed in
the time specified by that DataClass group’s mintime
parameter.
Storage policy is performed for a DataClass group using the
Note
To run fspolicy to store a very large number of files, (a
million or more) make sure you have sufficient memory. The
required memory should equal the maximum number of files to
store times 425.
File storage and media type selection are based upon the file
size controlled by the system administrator. By entering the
DataClass group name and defining file sizes with the
applicable media type in the filesize.config file (located
under the $FS_HOME/sysparms directory), the system
administrator customizes file storage policy for each DataClass
group.
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The filesize.config file as shown in the example below, is
read each time a list of files is received for storage. This file is
dynamic and enables the system administrator to make changes
without recycling FileServ.
########################################################
#This is a FileServ file for placing files on different
#media types based on the size of the files themselves.
#
#Any line that starts with a “#” is considered a comment
#
#Each entry should have the following, in order, and blank
separated:
# - Class name (up to 16 characters)
# - Copy Number (1-2, *: all copies))
# - file size range and media type
# - Valid mediatypes: D2S, D2L, D2M, 3490, 3490E, and 3480
#
#All the above sizes are in millions of bytes
# * - Indicates all other unspecified sizes.
#
# NOTE: Specified ranges may intersect one another however the
# mediatype is determined by parsing the text line from left to
right.
#######################################################
#The following is a sample line which has been commented out
#myclass
#myclass
#myclass1
#myclass2
1
2
*
*
0-30:3480
0-50:3480
0-25:
30-1000:
50-1000:
30-1000:D2S
25-*:D2S
20-*:D2S
25-2500:D2M *-*:D2L
30-1000:D2S
########################################################
#The default is the mediatype specified in the class.
########################################################
doc_test
1
0-25:D2S
30-1000:3480
Example only
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Cleanup Policy
Cleanup policy is used to remove file data from disk. The
number of files removed is based on the available disk space
requested for a file system. When the cleanup policy is run,
each file that is a disk data truncation candidate is assigned a
weight. This weight is a factor in determining to remove one
particular disk file over another.
A disk file becomes a candidate for cleanup if it exhibits the
following characteristics:
•
•
The required number of copies are stored to media
The file attributes are not set for exclusion from cleanup
processing
•
The file is idle on disk for its mintime interval
When cleanup policy is applied, file data is truncated beginning
with files of the highest weight and continuing down the list.
Cleanup policy application stops after the file system reaches its
specified free space percentage or when the list is exhausted. If
the list is exhausted before the specified free space is reached,
the returned status indicates this as a failure to reach the
required percentage fill level.
To obtain more free space, additional files must be made
eligible for truncation and the cleanup policy must be rerun.
Files are made available by reducing relevant mintime values
(either on a DataClass group or on specific files), or by ignoring
the mintime check by executing the policy with a force option.
Generating fsstore commands for disk-only files also makes
additional files available for disk truncation. The cleanup policy
is initiated on a file-system basis with the fspolicy -t
command.
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Overflow Policy
The HIBLK_THRESHOLD and LOBLK_THRESHOLD system
variables are located in the fs_sysparm file. These variables
are system-wide parameters.
FileServ reads the new values at startup time. If FileServ is
running, you must recycle the system to pickup the new values.
If the overflow hiblk value is reached for a file system, the
$FS_HOME/internal/policy_dir/fs_spt_ovflow
script is automatically invoked. This script is used for:
•
Emergency situations when routine data cleanup is not
maintained for a file system,
•
Or, when data is rapidly stored to the disk before the routine
storage policy reacts.
Note
SGI ONLY: If HIBLK_THRESHOLD and
LOBLK_THRESHOLD parameters are not given to a file
system, the emergency script is never invoked for that file
system, regardless of the disk usage.
•
Using the fspolicy Command
The fspolicy command is run to store eligible files from disk
to media or to truncate files on disk that are fully stored to
media
Note
For more information on the fspolicy command, refer to the
Command Reference book.
A store request is processed in two ways:
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•
Normal. The normal store request is placed in the queue for
processing along with all other resource requests.
Note
To run fspolicy to store a very large number of files, (a
million or more) make sure you have sufficient memory.
The required memory should equal the maximum number
of files to store times 425.
•
Emergency.
The fspolicy command maintains an internal store and
truncate candidate list of files. When the command is invoked,
those candidates meeting the criteria for storage or truncation
are processed. This candidate list can be overridden with the -w
option that scans the entire file system looking for potential
store and truncation candidates that meet the defined DataClass
group mintime requirements. Although this process is database
intensive, it should be performed on a regular basis as well as
any time an interrupt occurs.
This option should be run during times of minimal FileServ
software activity or executed through cron.
Running as a cron
Event
To invoke fspolicy on a periodic basis, use the UNIX cron
utility.
Note
For more information on crontab, refer to the man pages.
The cron utility is a permanent process that is started by
/etc/rc.local. This utility consults the files in the
$FS_HOME/.crontab directory to determine which tasks to
perform and at what time.
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Each line in a .crontab file must consist of six positional
fields, separated by spaces or tabs, and formatted as follows:
minutes hours day-of-month month day-of-week
command
Any of the first five fields can be a list of values separated by
commas. A value is either a number, or a pair of numbers that
are separated by a hyphen. This value indicates that the job is
performed for all the times in the specified range. If a field is an
asterisk character (*), the job is performed for all possible
values of the field.
Field
Description
minutes
hours
Minutes field. Values range from 0
through 59.
Hours field. Values range from 0 through
23.
day-of-month
month
Day of the month. Values range from 1
through 31.
Month of the year. Values range from 1
through 12.
day-of-week
Day of the week. Values range from 0
through 6. Sunday is day 0. For backward
compatibility with older systems, Sunday
can also be specified as day 7.
command
Command to be run. A percent character
in this field is translated to a NEWLINE
character. Only the first line (up to a per
cent or end of line) of the command field
is executed by the shell. The other lines
are made available to the command as
standard input.
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The specification of days is made by two fields (day of the
month and day of the week). If both are specified as a list of
elements, the policy adheres to both. If one of the fields is an
asterisk, the other field determines the day of the month or
week.
The example below shows this entry runs a command at
midnight on the 1st and 15th of each month, as well as every
Monday.
0 0 1,15 * 1
To specify days by only one field, the other field is set to *.
0 0 * * 1
When used to run fspolicy as root, the cron utility is
placed under the FileServ user ID home directory. Any
generated output or errors are mailed to files location root or
FileServ user unless they are redirected.
The example below shows fspolicy running periodically on
several different DataClass groups at different times in the
following example of the .crontab file.
0 0 * * * /usr/adic/exec/fspolicy -s -c prodclass
15 0 * * * /usr/adic/exec/fspolicy -t -y /dev
15 4 * * * /usr/adic/exec/fspolicy -s -y groupaclass
40 4 * * * /usr/adic/exec/fspolicy -s -y groupbclass
0 0 * * 1-5 /usr/adic/exec/fspolicy -s -y tempclass
0 0 * * 0,6 /usr/adic/exec/fspolicy -s -y permclass
•
•
A storage policy for prodclass runs at minute 0 of hour 0
(midnight) of every day.
The cleanup policy is invoked for the file system /dev at 15
minutes after midnight every day.
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•
•
The two cases where storage policy is run on
groupaclass and groupbclass run at 15 minutes past 4
and at 40 minutes past 4, respectively, every day of the year.
The storage policy application for tempclass is run at
midnight on weekdays. Finally, storage policy is run for
permclass at midnight on weekends only.
Using this method, policies are run at whatever intervals are
required. However, use caution to ensure that the interval
between executions of a particular policy is set so that more
than one instance of the policy is not initiated simultaneously.
System resources are wasted if the policies are duplicated by
overlapping their execution.
After the root.crontab file is edited, update the cron
process with any changes to the root.crontab file.
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The set of DataClass group parameters govern how FileServ
processes the movement of data from disk to media. The
directories controlled by DataClass group parameters are called
migration directories because the data is moved (migrated)
from disk to media. Movement of files from disk to media is
also called file storage.
Storing and
Retrieving
Data
The following topics are discussed:
Topic
Page
Storing data begins by copying files into migration directories
on disk. A file that remains in a migration directory is stored to
media when the fspolicy -s command, for that DataClass
group, is initiated by the system administrator or through the
cron process.
Store Files
Note
For more information on the fsstore command, refer to the
Command Reference book.
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In addition to providing an immediate store functionality, the
fsstore command allows the user to override, on a file basis,
the default values for the DataClass parameters that affect
storage processing. Two parameters affect how the file data is
handled during the storage processing. The first parameter
specifies the cleanup action and the second specifies the
number of secondary file copies.
Under usual circumstances, files in migration directories are
routinely stored to media by initiation of the storage policy by
cron. If data must be stored to media before the scheduled
application of storage policy, the fsstore command can be
issued for individual files.
When running the fsstore command, the user need not
specify the media type used to store the data. FileServ selects
the media. However, the user can override the default media
type by specifying a different media type. An available media
that has sufficient space and contains the same class of data is
selected. If no appropriate nonblank media are available, the
software uses media of the appropriate DataClass group (in
which all files are deleted), or unused blank media.
The user specifies a minimum file size for storage, the drive
pool to use for storage, and the number of file copies to create.
The user also specifies that the file is not to be clustered.
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Cleanup is the removal of data from disk after the application of
the storage policy. Cleanup is specified with one of the
commands below:
Clean Up Data
from Disk
•
•
fsstore.
fspolicy -t.
Note
The fspolicy command cannot be used to
simultaneously store and cleanup disk data.
•
•
fschfiat. You can overrides the cleanup action for a
specific file by changing the file’s attributes through the
fschfiat command. The changes made through this
command always apply for the file, unless they are changed
again with the fschfiat command.
fsrmcopy.
Cleanup by File
Name
Step 1.
Step 2.
Run the fsrmcopy command. Specify the names
of one or more files to remove from disk.
% fsrmcopy test1
FileServ releases the associated data blocks.
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Cleanup by
DataClass
A DataClass group parameter specifies the default cleanup
action. A Cleanup policy can be:
•
Completely disabled.
-
Files can be excluded from clean-up. Use this only for
frequently accessed files.
•
Immediate truncation following the storage policy.
-
-
Valid only if all copies defined by the file’s attributes
are stored. If all copies are not made, the cleanup
action does not occur, because that file is not eligible
for cleanup.
The file remains on disk after storage policy until the
fspolicy -t command is invoked for the file
system on which the file resides, and the file is eligible
for truncation.
•
Truncated when cleanup policy determines that disk space
is necessary.
-
The file remains on disk after storage policy until the
fspolicy -t command is invoked for the file
system on which the file resides, and the file is eligible
for truncation.
For protection of media-based files, secondary file copying is
provided. If enabled for a DataClass group, files automatically
have a secondary copy maintained on a separate media.
Copy
Secondary Files
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A secondary file copy is written at the time the file is stored
with the fsstore command by specifying the number of
copies (including the primary file) up to the maximum number
of copies set for the DataClass group. The number of secondary
copies specified for a file cannot exceed the DataClass
maxcopies parameter value.
Note
The current maximum allowable value for maxcopies is two
copies, a primary and a secondary.
You can override the DataClass number of copies for a specific
file with the fschfiat command.
When a storage request is received, either with the application
of the storage policy or the fsstore command, the file
eligibility is checked for storage.
GeneralStorage
Processing
•
If no media copy exists or the file is changed since the last
copy was made, the file is eligible for storage.
•
If the file data is already on media and the file has not
changed since the copy was made, the file is not eligible for
storage to media.
Note
Before you can use the fsstore command, you must
have read, write, or execute permission on the file you
want to truncate.
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After a file is eligible for storage, the file data for the primary
copy is written to media. A volume is chosen for storage as
either a default for the DataClass group (specified when the
DataClass group is defined by the system administrator), or as a
media type specified by the user when the fsstore command
is issued.
If storage of a secondary copy is requested, the file data is
copied to another media of the specified (or default) media type
for the DataClass group associated with the file. Secondary
copies are not placed on the same media as the primary copy.
If the DataClass group file cleanup parameter is set for
immediate truncation, the file data is truncated after all copies
have been stored.
Multiple storage requests queued for the same file are compared
for compatibility. The first request is always processed.
Subsequent storage requests are considered compatible when
the specified media type is the same and the specified cleanup
action is the same as the first request. When the requests are not
compatible, the requests are failed with an indication that an
incompatible store is already in progress.
Subsequent requests process the additional copies. All requests
are retained until the storage process is complete. When the
storage process is complete, all requests receive the same
completion indication.
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Files that reside only on media are retrieved to disk when
accessed by the user during usual operations. Files can also be
retrieved to disk by issuing a fsretrieve command. The
fsretrieve command requires the name of each file to be
retrieved. Multiple files can be retrieved with the same
command.
Retrieve Files
Note
For more information on the fsretrieve command, refer to
the Command Reference book.
However, if these files reside on different file systems, the
command will either retrieve the files that are the most
numerous, or the files that are listed first in the fsretrieve
command. The command will not retrieve files from both
Filesystem.
If a file is retrieved to a new file name, the new file name must
be valid, and the user must have access to the directory. If the
file exists, the user must also have access to the file. The group
assigned to this new file is the primary group of the user who
initiates the fsretrieve command.
For example, if the user belongs to the groups FileServ,
sysadm, and sw respectively, all files retrieved to disk from
media are in the FileServ group. The UNIX permissions for
the new file are determined by the current umask of the user. If
a failure occurs when retrieving a file to a new file name, the
incomplete file with the new file name is not removed from
disk. The user can delete the new file name or re-retrieve the
file to the same new file name.
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The fsretrieve command usually retrieves the primary copy
of the file requested. If the primary copy is inaccessible or
corrupted, the command defaults to the secondary copy.
Completion status returns when the files are successfully copied
onto disk. The fsfileinfo command can be used to
determine if a file is on tape, disk, or both.
The file in the migration directory is associated with its media
copy. When the file on disk is modified, but has not been stored
to media again, the version on the media is invalidated and
cannot be retrieved from the media with the fsretrieve
command.
The file version that resides on disk is always assumed to be the
current version. If the file is removed from disk using the UNIX
rm command, the file is logically deleted from the media.
Note
When the UNIX rm command is used to remove a file, only the
Primary copy of the file can be recovered with the fsundelete
command. The rm command removes the Secondary copy of
the file from the database.
The file data still resides on media, but it is no longer tracked
and can only be retrieved from the trashcan using the
fsundelete command. This retrieval is valid until fsclean
is used to purge the trashcan.
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Retrieve Files from
Trashcan
FileServ recovers a particular version of a migrated file that was
modified or removed from an archival directory on disk. As
migrated files are modified or removed, an entry is placed in the
trashcan with information to recover the file. Only the primary
copy of the file can be recovered, not the secondary copy. When
archival directories are removed from disk, an entry is also
placed in the trashcan. The entries in the trashcan contain
information necessary for the recovery of the file or directories.
The FileServ fsundelete command allows the user to
recover files that were modified or removed from disk as listed
below:
•
•
•
Generate a Trashcan report.
Restore deleted files or directories.
Revert a file or directory.
The fsundelete command is used to determine what files are
in the trashcan. The command is specified with either a full path
name, filename, or partial filename. FileServ displays a list of
files and directories owned by the user. These files match the
requested file name. Optionally, the fsundelete -p
command displays files and directories for which the user has
UNIX read and write permissions.
Another report option restricts the report length, based on a
specified start time and end time. Report entries are displayed
for each user-accessible file within the specified time range.
Note
For more information on the fsundelete command, refer to
the Command Reference book.
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The fsundelete -u recovers a previous version of a
migrated file or deleted migration directories. The command is
specified with the full path name and restores the FileServ
pointer to the area of the media where the data is stored.
This operation is successful if an entry for the file, or directory
exists in the trashcan. The file is recovered on tape only as a
migrated file. All files are restored to the directory and name
under which they were stored when they were deleted. A
restored file or directory can be moved to a different directory
or renamed. If more than one version of a file exists in the
trashcan, the file version to recover can be specified with the -v
option. If the file already exists on disk, a force flag (-f) causes
the recovered file to overwrite the existing disk file. For each
file or directory requested, FileServ returns an error to the user
if the file cannot be created and the fsundelete processing
for that file is terminated.
If a file is moved within a directory (renamed with the mv
command), the file name is not updated in the FileServ
database. If the file is deleted, the previous name appears in the
trashcan.
Note
If a file is moved within a directory, the file appears in the
trashcan with the previous name.
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Clean up Trashcan
Another command that must be routinely run is fsclean. The
fsclean command purges the FileServ trashcan information.
Caution
Use of fsclean eliminates the ability to recover files from the
trashcan with the fsundelete command!
Precautions must be taken when using the fsclean command.
Trashcan serves as the repository for references to media data
that is deleted from the disk, or modified. Each time a file is
modified, its tape copy becomes invalid. An entry is created in
the trashcan for the older version of the file. Also, when files
(containing current file copies on media) are removed (UNIX
rm), the trashcan receives an entry for each removed file.
Because of asynchronous processing, an fsclean performed
immediately after file removal may not completely clean the
media. A fsmedinfo -l report is run to verify all files were
deleted from the media. If files still exist, the fsclean
command must be repeated.
The information can be purged by the mediaID, by endtime or
both. The -m or -t option is required to remove information
from the trashcan. To delete the entire trashcan, use the
fsclean command with the -t option, and no time
specified.
The fsundelete command allows recovery of removed or
modified copies of files as long as an entry exists in the
trashcan. When fsclean is run for media, all files on that
media referenced in the trashcan are no longer recoverable with
fsundelete.
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Retrieve Partial
Files
The fsretrieve command supports partial file copy to disk
from media. A new file name is required, as well as a start and
ending byte for the file data. With these parameters, the part of
the file specified in the byte range is copied onto disk into the
new file name.
The byte range is zero relative, meaning that if the file size (in
bytes) is known, any part of the file is retrieved by specifying a
range of bytes between 0 and the last byte (file size -1). File size
information can be obtained with the UNIX ls command or
the fsmedinfo report.
Note
For more information on the fsretrieve command, refer to
the Command Reference book.
Step 1.
Step 2.
Run the fsretrieve command. Specify one or
more file names to retrieve. Or, specify a single file
name to retrieve.
Specify the -n newfilename into which you want
to retrieve the specified file. The new filename must
be in a local file system. Retrieval to an
NFS-mounted file system is not permitted. Usually,
the primary copy of the file is retrieved.
Note
Partial retrieval requires the use of the -n
newfilename parameter.
Use other options as appropriate.
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Retrieve Secondary
Files
If a file is stored to media as both a primary and secondary
copy, the secondary copy of the file can be retrieved to disk as a
new file by using the fsretrieve -c command. This is the
only command that allows access to the secondary copy of a
file.
FileServ provides the system administrator with the ability to
configure each FileServ drive to delay the dismount of media
after store and retrieve operations. The fsconfig command
allows the system administrator to specify a delay time-out for
each drive in the library subsystem.
Delayed
Dismount
Note
For more information on the fsconfig command, refer to
the Command Reference book.
The delay time-out specifies the number of seconds since the
last release before the media is dismounted. Media remains
mounted in a drive until the specified time has passed since the
last media release. The timer is cancelled when media is
reallocated. The timer is reset to the time-out value when the
media is released again.
Media is always dismounted if a currently delayed piece of
media cannot fulfill an incoming request and all other drives are
in use or delayed. Media marked suspect during the operation
for which it is allocated are also dismounted.
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Media delayed in a drive can be dismounted with the
fsdismount command. The fschstate or fsstate
commands can be used to determine if a drive is in a
delayed-dismount status.
Note
For more information on these commands, refer to the
fsaddclass command in the Command Reference book.
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This section describes operations required by both the VolServ
operator and the FileServ system administrator for each media
management function.
Media
Management
WARNING
BE CAREFUL when interacting with the mechanical interfaces
to the automated libraries. Ensure hands, long hair, and loose
clothing are clear of the entry port during normal media
operations
DO NOT operate the robot when the library is open. (Use
fschstate -s off before opening the library.)
The following topics are discussed:
Topic
Page
VolServ performs media services to manage the physical
libraries and movement of media.
Media Services
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MediaClass Group
Definitions
There are 54 MediaClass names with the following form:
FileServID_mediatype_mediaclasstype
There are ten possible values for FileServ ID: F0 through F9.
Six values of mediaclasstype exist: ADDBLANK or
ADDBLNK, CHECKIN, IMPORT, DATA, MIGRATE, and
REMOVE. An example of a valid MediaClass name is
F0_D2S_ADDBLANK.
The VolServ operator must choose a MediaClass name for the
media being entered. These MediaClass names are used
exclusively for FileServ systems. In addition, the correct
MediaClass name must be used for the media being entered. For
example, Checked-out media being entered into the system is
associated with F#_###_CHECKIN.
When entering media, the VolServ operator uses the IMPORT,
ADDBLANK, and CHECKIN MediaClass names. Removal of
media requires an automatic reclassification of MediaClass
groups.The definitions of how each MediaClass name used by
FileServ is shown in the table below:
Media Class Type
Definition
REMOVE
All media removed from FileServ with
fsmedout is automatically reclassified
from DATA to REMOVE.
ADDBLANK
CHECKIN
Blank media being entered into the
system.
Checked-out media being re-entered into
the system.
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Media Class Type
Definition
DATA
All media entered into the system used by
FileServ is automatically reclassified to
this MediaClass group after the fsmedin
command is performed successfully
MIGRATE
Media classified as DATA that are filled to
a percentage equal to or exceeding
FileServ system parameter
PERCENT_FULL_TO_MIGRATE value
is reclassified as MIGRATE and can be
migrated to a different library mode based
on the configuration of VolServ library
action.
Loading and removing media in the storage subsystems is a
two-step process. Media are physically entered and removed
from the system through the VolServ software. FileServ
logically enters and removes media.
Load and
Unload Media
All media are physically entered into the storage subsystem
through VolServ. This media are then logically entered into
FileServ with the fsmedin command. Media entered into
FileServ are normally formatted immediately. FileServ software
allows media to be formatted immediately or withheld from
format.
Media are logically removed from FileServ with the fsmedout
command, then physically removed from the storage subsystem
by the VolServ software.
Different methods of entering and removing media to and from
the subsystems exist, depending on whether the media are blank
or contain data (nonblank). Each of these methods is handled
differently by FileServ.
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Remove Media
Step 1.
Step 2.
Run the fsmedout command with the media
identifiers and the -r option for the media to be
checked out. The -t labeltext option is not supported
at this time.
The physical location of the media (-l location) is
used for tracking the media and is limited to 255
characters.
Media are logically checked out of the FileServ
system.
Step 3.
Contact the VolServ operator to complete the
operation and to obtain the media.
Add Blank Media
FileServ uses the fsmedin -b command to logically enter
blank media into FileServ software.
Note
For more information on the fsmedin command, refer to the
Command Reference book.
Blank media can be added to the general blank pool or to a
specific DataClass group pool. Blank media in the general
blank pool are available for use in any DataClass group. Blank
media in the DataClass group pool are only available for use by
that particular DataClass group.
The quantity of media being added can be optionally entered as
an argument of the fsmedin -b command. The quantity
option is primarily used when a specific number, less than the
value specified by the system VS_DEF_QUANTITY parameter,
is needed.
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Each type of media supported by FileServ has a default media
length specified in the system parameters;
-DEF_MED_SPC_mediatype. If two media of the same type
have a different length, the -l option of the fsmedin
command overrides the default value. For example, if two
libraries are used the default media length can only apply to one
library. Therefore, whenever adding blank media to the other
library, the -l option must be used.
Step 1.
Before new media is introduced to the storage
subsystem, a barcode label must be applied to the
outer edge of the media. If the label on media is
marred when the media is entered, the media is
automatically ejected from the storage subsystems.
In this case, remove and replace the label. Blank
media are entered by the VolServ operator using the
Import command and the MediaClass
F#_XXX_ADDBLANK.
Step 2.
Step 3.
Run the fsmedin command with the -b option.
Specify the -q quantity option to enter a specific
quantity of media. The maximum number that can
be specified is 99.
Step 4.
Define the media type (-t) to be used. The media
type is required for a system that handles multiple
media types.
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Remove Blank
Media
The fsmedout command allows the removal of blank media.
Note
For more information on the fsmedout command, refer to
the Command Reference book.
Two ways exist to remove blank media from the FileServ
domain:
•
•
Checkout blank media.
Remove blank media.
Check Out Blank Media
Checking out blank media is NOT a common practice.
Checking out blank media temporarily removes the media, but
leaves the media information intact. In an extreme case, blank
media can be removed from the system to free up media slots
for other media.
The fsmedout -r command can temporarily remove blank
media, retain information about the media in the FileServ
database, and logically remove the media from the FileServ
domain.
The status of Checked-out media is changed to OUT OF FS.
Media can be physically removed from the storage subsystem
by the VolServ operator. The VolServ operator is prompted and
performs an Eject function to physically remove the media.
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Checked-out blank media can be re-entered into the FileServ
system using the fsmedin -r command. If the re-entry of the
Checked-out media is no longer required, the fsrminfo
command is used to remove all knowledge of the media from
the FileServ system.
Caution
If you use the fsrminfo command to remove files, both the
primary and secondary copies are removed. However, only
the primary copy can be recovered.
Remove Blank Media
The fsmedout -b command allows removal of blank media.
The media specified in the fsmedout command is logically
removed from FileServ, then physically removed from the
storage subsystem by the VolServ operator after performing an
Eject function.
The issuer of the fsmedout request is notified that the
operation is successful when the logical remove is complete. If
media (specified for removal) is not found or does not fit the
criteria specified in the options on the command, a message is
returned for that media and the process continues for the
remaining media specified.
After media is assigned to a DataClass group for file storage, it
stays assigned to that DataClass group, even when all of the
files on the media are deleted. The media reverts back to a blank
status (depending on the cleanup action specified for the
DataClass group). The fsmedout command removes blank
media from the general blank pool or blanks allocated to a
specific DataClass group.
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All blank media introduced into the storage subsystem can be
submitted for immediate formatting or withheld from
formatting. Media withheld (-w) from formatting is
automatically formatted when chosen for data storage or by
manually issuing the fsformat command.
Format Media
Note
For more information on the fsformat command, refer to
the Command Reference book.
If media is formatted, it is rejected when the drive attempts the
format. The -f option for fsformat applies only to D-2 media.
It overrides the rejection to reformat the media. Rejection of
preformatted media without the force option prevents accidental
formatting of media that contains data. Formatting D-2 media is
time-consuming.
Media duplication is intended for the following uses:
Media
Duplication
•
•
•
Media maintenance - If errors frequently occur when
attempting to read or write to the media.
Data maintenance - If the media is filled with unusable
space because of deleted files.
Data duplication - A copy of the information is needed, in
addition to the copy stored in the library.
Duplicating the contents of media or specific files on media is
performed with:
•
•
fsmedcopy command.
fsfilecopy command.
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Both types of duplications are described below.
Note
For more information on the fsmedcopy or fsfilecopy
commands, refer to the Command Reference book.
Copy Media
The fsmedcopy -r command is used to replace media by
moving data onto newer, better media or reclaiming the wasted
space because of fragmentation.
Note
Running the fsmedcopy -r command is time consuming
because of the update of file information. The extensive
database activity caused by fsmedcopy -r affects the
performance of most other FileServ commands. It is
recommended to run fsmedcopy -r during a time of little or
no use of FileServ.
Data on the specified media is copied onto other media
(specified media, blank media, or a different media type not
specified by the DataClass group). Multiple copy to media can
be used if the destination media is not specified. Only active
files on the original media are copied onto destination media.
No trashcan contents are copied. After fsclean is invoked,
any trashcan contents are removed and the original media are
marked as blank. The original media can stay within the
DataClass group or can be moved to the general blank pool,
depending on the DataClass group definition. If fsclean is
not performed, the original media remain within the DataClass
group and new files are written. Any trashcan contents located
on the media can be recovered using fsmedinfo -l and
fsundelete. The fsmedcopy report can be used along with
this option for finding candidate media for defragmentation.
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Copy Files
The fsfilecopy -r command functions like the
fsmedcopy command, except it replaces specified files,
instead of the entire media.
A single file from media or several files from several media can
be replaced. The only restriction is that all files must be in the
same DataClass group. Specified files from the original media
are moved onto either a blank media, specified media, or a
different media type not defined by the DataClass group. Only
active files can be copied. No trashcan contents are copied.
FileServ supports the following tape media:
Media States
•
•
•
•
3490, 3490E, and 3480.
D-2.
8590.
CTIII and CTIV.
Media can be placed in various states by the fschmedstate
command.
The fsmedinfo report can be used to determine the present
state of media, count of suspect errors, and how media is
managed.
Note
For more information on the fsmedinfo command, refer to
the Command Reference book.
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The valid states for media in the FileServ system include the
following:
State
Protect
Description
Reserved for read-only operations.
Unprotect
Available
Available for read and write operations.
Error free and resident in the storage
subsystem.
Unavailable
Suspect
Not used because it is removed from the
storage subsystem or has extensive errors.
A read/write or position error occurred with
that media in a drive.
Unsuspect
Unmark
Free from errors and problems.
Media is error free and not designated for any
copy or check-out operations.
Mark
An error has occurred in the handling of
media, or there were read or write errors, or it
is marked for copy or checkout operations.
To cancel a Mark Status of Error or Checkout
action, change media to unmark. These are
the only states against which the unmark
state can be applied.
Noerr
The noerr state resets the threshold count to
0 for the media. If any SER values are
exceeded during a read or write request, the
threshold count is incriminated. Cumulative
threshold errors indicate that a problem may
exist with the media or the drive. Examine the
system logs to aid in determining the source of
the error.
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Every FileServ installation has a storage limit capacity. If the
storage limit capacity is exceeded, E-mail is sent to the system
administrator and a message is logged in the system log file. All
Storage requests fail until the system administrator deletes a
sufficient number of files to place the system under the storage
limit.
Storage Limit
The fsusedspace command shows, in Gigabytes (GB), the
total amount of stored primary copy data in the storage
subsystem. Additional storage space can be created by
defragmenting media, removing seldom-used media, nonblank
media, or removing file information for Checked-out media that
are no longer required also creates storage space.
The fsmedcopy command generates a report of fragmented
media and duplicates the contents of fragmented media onto
blank or nonblank media.
Note
For more information on the fsusedspace and
fsmedcopy commands, refer to the Command Reference
book.
The fill and fragmentation levels can be specified to locate
those media with a high percentage of fragmentation. If no
values are specified, all media that contain any percent of
fragmentation is listed.
The fsmedout and fsrminfo commands can be used to
remove file information for Checked-out media.
Caution
If you use the fsrminfo command to remove files, both the
primary and secondary copies are removed. However, only
the primary copy can be recovered.
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After the amount of used storage is under the storage limit,
FileServ must be cycled to re-enable Imports and Store
requests.
The STORE_LIMIT_NOTICE system parameter located in
$FS_HOME/sysparm directory, defines the range, in GB that
remain before the storage capacity is exceeded.
Note
The fs_sysparm file is located in the directory
$FS_HOME/sysparms, where $FS_HOME is the directory
where FileServ is installed.
When this range is reached, FileServFileServ sends an
E-mail message to the FS_OWNER_ID notifying the user that
the storage limit capacity threshold is exceed.
Many media are distributed across various subsystems.
Therefore, the requirements for reporting on these media
necessitate a Query function. The Query function allows
display of media information by location, state, DataClass
group, and movement.
Generate Media
Reports
Media Information
The fsmedinfo report (or Media Information screen) targets
specific media and displays the vital statistics, along with a
listing of the contents. Media can be listed in categories of the
current operational states and DataClass association by using
the fsmedlist report. Each report shows a different picture of
the current status of the media in the system.
Note
For more information on the fsmedlist and fsmedinfo
commands, refer to the Com
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Step 1.
Step 2.
Run the fsmedinfo command and specify one or
more media identifiers to report.
Use the -l option to obtain a long report. An
example of the output is shown below:
% fsmedinfo -l feu002
---------------------------------------------------------------
Media Information Report Tue Jan 26 17:32:44 1999
Media ID: feu002(1) (1 = primary, 2 = secondary)
Media Type: D2 Small
---------------------------------------------------------------
Storage Area: MAN_AREA1
Storage Area: VolServ
Class ID: document
Bytes Used:
15,000,000
Last Accessed: 03-feb-1999 16:31:44 Space Remaining:25,277,000,000
Media Status: AVAIL
Write Protect:
Mark Status: UNMARKED
Dir File: VALID
Medium Location: SLOT/BIN
Percent Used:
Suspect Count:
Mount Count:
0.06
N
0
3
0
Threshold Count:
Manufacturer:
Batch ID:
Formatted
Number of Files:
Y
4
External Location: N/A
File system </arch1> is unmounted.
File system </arch3> is unmounted.
All monitored filesystems must be mounted to show “-l” output.
FS0000 26 68309 fsmedinfo completed: Command Successful.
Step 3.
If the parent of an individual file cannot be found,
the report shows question marks for the path and
indicates that the parent is unknown. An example of
this output is shown below. If this situation occurs,
perform an audit (fsaudit) on the file system.
File Size Status Modify/Delete Date File Pathname
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---------------------------------------------------------------
3773 Active Mon Dec 7 16:58:11 1998 ???/xxx : Parent_Unknown
3773 Active Mon Dec 7 16:58:13 1998 ???/yyy : Parent_Unknown
3773 Active Mon Dec 7 16:58:16 1998 ???/zzz : Parent_Unknown
Media List
The fsmedlist command or Media List screen produces a
list of all the media, or the media in a particular DataClass
group. If the class is not specified, the report lists information
for media in all DataClass groups and media in the general
blank pool.
Note
Because a single piece of media can be in more than one
category, the sum of media in all categories is not likely to
match the total number of media in the class.
Step 1.
Step 2.
Run the fsmedlist command and specify the
appropriate options.
An example of the short report is shown below:
% fsmedlist -c testclass
---------------------------------------------------------------
Media List Report
Mon Jan 18 10:46:42 1999
Class ID
Drive
Slot Trans Exit Out Blank Prot Avail Susp Mark Total
---------------------------------------------------------------
testclass
0
2
0
0
0
1
0
1
1
2002
FS0000 18 02946 fsmedlist completed: Command Successful.
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Step 3.
The -l option generates a longer report shown
below that includes the identifiers of the media for
each of the categories previously described. If no
options are specified, all of the media identifiers in
each category are listed, as shown below. The list is
sent to stdout and can be redirected to a file or
piped to a printer.
Media List Report
Mon Jan 18 11:43:27 1999
Class ID: vrpclass
---------------------------------------------------------------
In Drive
Total:0
In Bin
Media IDs:
jbd4(0)
vrp005(1)
vrp002(0)
vrp006(0)
vrp003(0)
Total:5
In Transit
Total:0
Exiting
Total:0
Out of adic
Total:0
Marked for Check-out
Total:0
Marked for Copy
Total:0
Mark Error
Total:0
Marked
Total:0
Formatted Blank
Media IDs:
jbd4(0)
Total:1
S0000 28 41651 fsmedlist completed: Command Successful.
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NOTES
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Roadmap
Refer To
Chapter
Topic
Initialize FileServ, configure interface with
VolServ, perform start up and shut down,
modify system configuration, and tune system
for better performance.
1
Manage: DataClass, files, migration, data, and
media.
2
Using the FileServ utilities.
3
4
Troubleshoot operating problems.
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The $FS_HOME/util directory contains software tools used to
simplify various operations. An explanation of each software
tool is explained in the .README files.
Utilities
The fspic utility displays a status of the FileServ system
including:
fspic
•
•
•
Hardware components.
Media mounted in drives.
Number of minutes since the media was accessed.
This utility also monitors disk usage for all migration file
systems under FileServ, as well as certain database locations.
All information is updated at regular intervals.
The autostart scripts are platform-specific. The scripts were
added to the $FS_HOME/util/autostart directory. These
scripts allow the user to automatically:
autostart
scripts
•
•
•
•
Start and stop the fs_dmapi daemon.
Mount and unmount the FileServ controlled file systems.
Start and stop the lock_manager process.
Start up and stop FileServ.
Starting the fs_dmapi and lock_manager processes, and
mounting of the FileServ controlled DMAPI file system must
be done prior to starting FileServ. These functions can be
performed manually, but the autostart scripts allow this to
occur automatically. For more information, refer to the .README
file on these scripts.
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FileServ and Amass
Autostart
If FileServ and AMASS are on the same platform, the FileServ
processes must be started before the AMASS processes. If the
autostart scripts are enabled for both FileServ and AMASS, the
FileServ autostart script must be executed before the AMASS
autostart script.
Assign a name to the FileServ autostart script so that it will start
before the AMASS autostart script. An example of the FileServ
and AMASS autostart script names int /etc/rx2.d directory is
shown below:
lrwxrwxr-x 1 root sys 25 Jan 16 08:58 S95FileServ ->\
/etc/init.d/auto_FileServ
lrwxrwxr-x 1 root sys 25 Jan 16 08:58 S99amass ->\
/etc/init.d/amass
The dbcheck utility checks the consistency of a database by
validating the location and key values associated with each
record and key in the data and key files.
dbcheck
Note
Run the dbcheck utility only when FileServ is not running.
ADIC recommends that you run this utility on a regular basis.
Database inconsistencies will be reported with a message
describing the nature of the error and the database address of
the record involved.
This utility is located in the $FS_HOME/util directory.
Options are described in the table below:
Option
Description
-s
Enables the checking of set consistency.
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Option
Description
-k
Performs key file structure checking.
-dk
Causes dbcheck to ensure the key file
contains the key for each key field in each data
file.
-kd
Causes dbcheck to ensure that a record
exists for each key in each key file.
-ts
Performs timestamp consistency checks.
-r#
Reports percentage complete to the file
stderr.
-p#
-f#
-t
Sets to the # the number of pages in the cache
for use in dbcheck.
Sets to # the number of open files for
dbcheck.
Prints a traceback of the B-tree when a key file
inconsistency is detected.
-c
Prints a count of objects scanned in the check.
dbname
To determine the name of the database,
look in the $FS_HOME/internal/fsdb
directory for files ending with the .dbd
extension.
If you experience unusual behavior when running a FileServ
command, look under $FS_HOME/internal/fsdb for any
data or key files that are unusually large. These files will have a
a .d01 or .k0x extension, where “x” is a number between 1
and 5. Unusually large file size may indicate there is a problem
with the database. If running dbcheck indicates a key file error,
run keybuild to correct the problem.
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The keybuild utility will rebuild all key files for a database. It
rebuilds the key files by first reinitializing the file, and then
sequentially reading all records from each data file and
recreating each key field from the contents of the record.
keybuild
Step 1.
From the $FS_HOME/util directory enter the
following:
# keybuild dbname
where:
Option
Description
dbname
Name of the database whose
key files you want to rebuild.
Step 2.
This utility recreates the key files when there is a
key file inconsistency, as reported by dbcheck.
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Roadmap
Refer To
Chapter
Topic
Initialize FileServ, configure interface with
VolServ, perform start up and shut down,
modify system configuration, and tune system
for better performance.
1
Managing: DataClass, files, migration, data,
and media.
2
Using the FileServ utilities.
3
4
Troubleshoot operating problems.
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If a data retrieval operation fails, the returned status message
usually provides information to determine the cause of the
failure.
Data Retrieval
Fails
Reissuing the request usually corrects the problem.
However, if a message appears indicating one of the reasons
below is responsible for the failure, additional troubleshooting
is needed before reissuing the request.
•
•
A database access error.
An abnormal process failure (a process abnormally
terminates or is killed).
•
•
•
A communication message is not received.
Resources are not allocated (no resources available).
The FileServ software terminates (either abnormally or
intentionally).
•
A file or media access problem.
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The commands in the table below will help you to further
troubleshoot problems. For information on these commands,
refer to the man pages.
Commands
that ID
Problems
Commands
brc(1M)
Commands
master(4)
bru(1)
mt(1)
close(2)
cpio(1)
dd(1M)
mtio(7)
open(2)
reboot(1M)
restore(1M)
system(4)
tar(1)
dump(1M)
hinv(1M)
ioctl(2)
lboot(1M)
ls(1)
tps(7M)
uname(1)
vi(1)
MAKEDEV(1M)
The fsdump, fsrestore, and fsaudit commands provide
disaster recovery in case of a FileServ disk crash. For
procedures for using these commands, refer to the Command
Reference book.
Disaster
Recovery
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Messages are displayed in response to a command or when
certain events occur. Messages are divided into two categories:
Messages
•
•
Status messages.
Syslog messages.
Every status and syslog message that results from a FileServ
command includes a request identifier. The request identifier is
a unique number assigned to each request at the point it is
initiated in the FileServ system.
Status messages are returned to the user in response to a every
command issued by that user. They are displayed on the
command line where the command is invoked.
Status
Messages
Status messages are classified into one of the following
categories.
Category
Usage
Definition
User entered a command with invalid syntax.
This message contains the proper syntax for
the command and applies only to the
command line interface.
Interim
Give interim status as the command is
processed.
Completion
Signify the completion of the command and
indicate if the command completed
successfully or unsuccessfully.
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Syslog messages are sent to a logging facility to inform a
system administrator of important system conditions, to record
additional information about these conditions, or to record the
occurrence of an event. Each message has an associated priority
that determines how the logging facility processes the message.
Syslog
Messages
Console messages are viewed from a shell window on the
FileServ system console.
Because certain unsolicited messages are not passed to FileServ
for display at the FileServ system console, ADIC recommends
that the host syslog monitor be displayed from the FileServ
system console.
Extract Syslog
Messages
The fsextlog command extracts information from any of the
standard UNIX syslog files.
Note
For more information on the fsextlog command, refer to the
Command Reference book.
The information is returned to stdout. All information in the
specified log is extracted by default. The time range (-t) option
extracts information stored in the log only over the specified
time period.
Log File
Maintenance
The script newfslog retains copies of syslogs messages. The
script increments each message by adding an extension to each
message; *.0, *.1, … Seven messages are retained by default;
however, the script can be modified to retain more messages
based on the sites need. The script is executed by the cron
process.
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The log_monitor script is a alternative to newfslog for log
maintenance. This script can be run as needed to refresh log
files, or called from cron to monitor the logs and prevent them
from filling up the $FS_HOME file system. Log cleaning will
only be triggered when the command line parameters are met.
The system variables $FS_HOME, $LOG_PATH, and
$NONARCH_LOG_PATH must be defined before the script will
run.
$LOGPATH is the path to the archival directory where old log
files (files that should not be stored in an archival directory)
will be stored. Type log_monitor without parameters to
obtain information on the parameter options. If log_monitor
returns “Command not found” make sure that the path on line
one is correct for the Perl processor, and change as necessary.
Information on past log_monitor activity can be found in
$NONARCH_LOG_PATH/log_monitor.log.
Set Up FileServ
Logging
Step 1.
Step 2.
Open a FileServ environment shell window.
Look at the /etc/syslog.conf file to make sure that
the console window on the workstation is receiving
FileServ syslog messages. This file contains entries
directing the pertinent FileServ syslog messages to
the FileServ system host computer.
Step 3.
Step 4.
Log in as root and enter the following command:
# -ps -elf | grep syslogd
Enter the following command to display the daemon
pid of the syslogd:
# kill -HUP daemonpid
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Step 5.
Issue the UNIX tail command of the file
logfile.
% tail -f $FS_HOME/syslogs/logfile
As host messages are generated, they are displayed in
this window.
Step 6.
Determine the log file where you can extract
information, for example,
$FS_HOME/syslogs/logfile.
Step 7.
Step 8.
Change directory (cd) to the directory where the log
files are stored and make sure that they exist.
Run the fsextlog command specifying the log
file where information is extracted.
% fsextlog logfile1 -t 1999:01:06 1999:01:07
Use the -t option to extract only those messages that
were logged between starttime and endtime. The
starttime and endtime must be before the current time
and the times must be specified as
YYYY:MM:DD:hh:mm:ss.
Extracted logs go to stdout but may be redirected.
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To support data recovery due to a disk crash, the following tasks
are required:
Recover Data
Task
Page
The fsdump command is used to perform a dump of each file
system.
Dump Data
Note
For more information on the fsdump command, refer
to the Command Reference book.
Enter a -f dumpfilename to specify the file system to be
dumped.
The fsdump command creates a fs_dump.file for each file
system dumped. The file system must be mounted for the file to
be created. The file is dumped with the files in the file system.
Then, the file is removed from disk.
When used with the UNIX xfsrestore command and the
FileServ fsaudit command, any file system that contains
migration directories can be restored.
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The fsdump command also supports recovery for backup of
nonmigration file systems. A log message advises the system
administrator that the file system is not archival. The dump
continues, but the fs_dump.file does not exist and is not
dumped to the dump tape. The fsdump command does not
continue if the file system does not exist, another dump
procedure is in progress, or for improper syntax.
Checkpoint the file systems should be done on a regular basis to
allow for data recovery from a disaster.
Step 1.
To ensure the integrity of the dump file before
checkpointing, run the UNIX fsck utility for the
file system.
Step 2.
Verify the file system name by viewing the
/etc/fstab file.
The /arch3 file system is used throughout this
example.
Step 3.
Step 4.
Run fsaudit -f on the file system to be dumped
to cleans up any discrepancies on the file system.
Because the trashcan data will not be valid on a file
system recovered from a dump file, run
fsclean -t.
Tip
ADIC recommends that you always run
fsclean -t prior to running fsdump.
Step 5.
To verify the file system’s integrity before dumping
it, run the ULNIX xfs_check utility.
% xfs_check /dev/dsk/dks2d6s7
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If problems are discovered, correct them before
continuing.
Step 6.
Step 7.
Mount a tape on a drive.
Run the fsdump command with the arguments
appropriate to the platform as specified in the man
page. Enter the destination file or drive and any
optional arguments if appropriate.
% fsdump -f /dev/rmt/tps0d3 /arch
The fsdump utility prompts the user to change tapes
if more than one tape is required. A sequence number
is given each tape, starting at 1.
• Change tapes when prompted.
• Label tapes with the sequence number so they
can be restored in the proper sequence.
File systems that are checkpointed with the fsdump command
are restored with the fsxrestore command.
Restore Data
Note
Restored files and directories have the same permissions as
when they were dumped.
If new relation points have been added, run fsdump so these
directories are located on the dump tape. The fsaudit
command fails if all parents of relation points are not on the
dump tape.
The fs_dump.file is also restored to disk for use by the
fsaudit -r command.
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Restoration of the entire file system is not required if a dump
tape is lost or bad. However, restoration is recommended.
Step 1.
Verify the new system is large enough to contain all
the data restored from tape by using the UNIX df
command.
The /arch3 file system is used throughout this
example.
% df
FILESYSTEM
TYPE BLOCKS USE
AVAIL USE MOOUNTED ON
/dev/dsk/dks2d6s7 xfs
2081008 1524392 556616 74
arch3
Step 2.
Run the xfsrestore command.
% xfsrestore -f /dev/rmt/tps0d3 /arch3
Step 3.
Checkpoint the FileServ database. For information,
Step 4.
Perform a recovery audit by using fsaudit -r
If the fsaudit command fails with a message that
indicates a relation parent unknown, the relation
point parents are not on the dump tape. This situation
occurs if:
• All files are not recovered from the dump tape
(bad dump tape).
• Dump is not made after a DataClass relation is
added to a directory.
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Use the UNIX mkdir command to create the parent
and rerun the fsaudit -r -f command.
If the procedure fails, call technical support.
Step 5.
Step 6.
Run the keyBuildAll utility to update the key
files in the database.
Run fsaudit -f twice on the recovered file
system.
• The first time fsaudit -f will clean up
discrepancies left by the audit recovery.
• The second time it should not find any problems.
If it does find a problem, continue running
fsaudit -f until all remaining discrepancies
are cleared.
Step 7.
To remove invalid candidate files, perform the
following:
% cd $FS_HOME/internal/policy_dir/
store_candidates
rm *
% cd ../trunc_candidates
% rm *
Step 8.
To rebuild the candidate lists, run the following:
% fspolicy -s -y <all archival\
filesystems> -w
% fspolicy -t -y <all archival\
filesystems> -w
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Restore Data in
Interactive Mode
Step 1.
Verify that the disk file system is large enough to
contain all the data restored from tape by using the
UNIX df command.
% df
FILESYSTEM
TYPE BLOCKS USE
AVAIL USE MOOUNTED ON
/dev/dsk/dks2d6s7 xfs
2081008 1524392 556616 74
arch
Step 2.
Run the xfsrestore -i command.
% xfsrestore -f /dev/rmt/tps0d3
/arch3
An interactive shell is invoked with the -> prompt.
Step 3.
Step 4.
Run the UNIX ls command at the xfsrestore
prompt to verify which directories and files are in
the dumped file system.
% -> ls
Add the appropriate relation point parents from the
dumped file system to the extraction list to be
restored.
-> add home
-> add mrktg
-> add junk
Note
If you specify a directory, it and all of its
descendants are added to the extraction list,
unless the h option is used on the command line.
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All relation points in the dumped file system are
specified on the extraction list. All relation point
parents must exist.
If a failure occurs, add the missing relation points to
the extraction list and continue.
Step 5.
Step 6.
Add any additional files and directories from the
dump tape to the extraction list. File names are
entered on a single line or one at a time.
List the files and directories and verify that all files to
be extracted from tape are starred (*). A star by a file
name indicates it is selected for extraction.
Enter the extract command.
-> extract
The selected directories and files are restored to disk.
If more than one tape contains the dumped data, the
user is prompted when to mount the next volume.
Type the sequence number of the tapes used for the
fsdump.
After all selected directories and files are restored,
type q or quit to exit the xfsrestore interactive
mode.
Step 7.
Step 8.
Checkpoint the FileServ database. For information,
Perform an audit of the file system using the
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If the fsaudit command fails with a message that
indicates a relation parent unknown, the relation
point parents are not on the dump tape. This situation
occurs if:
• All files are not recovered from the dump tape
(bad dump tape).
• Dump is not made after a DataClass relation is
added to a directory.
Use the UNIX mkdir command to create the parent
and rerun the fsaudit -r -f command.
If the procedure fails, call technical support.
Step 9.
Run the keyBuildAll utility to update the key files
in the database.
Step 10. Run fsaudit -f twice on the recovered file
system.
• The first time fsaudit -f will clean up
discrepancies left by the audit recovery.
• The second time it should not find any problems.
If it does find a problem, continue running
fsaudit -f until all remaining discrepancies
are cleared.
Step 11. To remove invalid candidate files, perform the
following:
% cd $FS_HOME/internal/policy_dir/
store_candidates
rm *
% cd ../trunc_candidates
% rm *
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Step 12. To rebuild the candidate lists, run the following:
% fspolicy -s -y <all archival filesystems> -w
% fspolicy -t -y <all archival filesystems> -w
The fsaudit command serves two purposes:
Audit Database
•
•
Recovery of file systems.
Database maintenance compares UNIX file system
information and FileServ database information. The
fsaudit command for database maintenance does not use
the fs_dump.file.
Note
For more information on the fsaudit command, refer to
the Command Reference book.
File System
Recovery
In a recovery situation, fsaudit uses the fs_dump.file to
change old file handles of the fsdump files to the new file
handles of the restore or xfsrestore files. After running
fsaudit, run fsdump to create a new dump tape for future
restoration activities.
Tip
ADIC recommends that you audit a file system once a week.
If a disk entry is not found for a file, the disk entry is created
during the reconciliation portion. For missing directories, the
UNIX mkdir command is used. For missing files, the file is
created as a truncated file.
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Database
Maintenance
The FileServ database contains UNIX file system information
to track the following:
•
•
•
•
Migration file systems.
Media where files are stored.
Association points in the UNIX file system.
Files in directories that are related to DataClass groups.
Running fsaudit
Command
FileServ and database software must be online and running for
execution of fsaudit. The file system that is specified for fsaudit
cannot be active when the command is invoked or it fails.
The fsaudit command disallows users, with the exception of
root, from accessing the file system during an audit.
Step 1.
Step 2.
Step 3.
Checkpoint the FileServ database.
Confirm that FileServ is active.
Run the fsaudit command and specify the file
system to audit. The name must be entered exactly
as it appears in the /etc/fstab file.
Use the appropriate options as needed.
Step 4.
Step 5.
If the file system mount point name mount point
changes from the name that the fsdump command
executed, specify the -o oldfilesystem name.
If the file system is restored to a lower point in the
directory hierarchy, specify -d, the name of the
directory in which the file system is restored.
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When using the fsaudit -r command, all parent
directories of relation points must be present in the
fs_dump.file. If a parent directory does not exist
for a relation point in the fs_dump.file, the
fsaudit command fails.
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If the DataClass mintime parameter for the DataClass groups
and cron setting that govern the frequency of the migration
policy application for a DataClass group are set to too short a
time, FileServ may be invoked too frequently. This is known as
thrashing because the policy is applied so frequently that it
prevents other system operations that have lower priority.
Troubleshoot
System
Performance
If thrashing occurs with a number of DataClass groups, it can
cause a major impact on system performance. If system
performance is degraded, the syslog file can be monitored for
messages that indicate when the policy is applied.
Step 1.
If syslog indicates that a low block call-out was
issued, use the UNIX df -a (disk free space)
command to monitor the disk fill level of all of the
file systems.
Step 2.
Run the fspolicy command.
Use the appropriate options as needed. For command
information, refer to the Command Reference book.
Step 3.
Run the fsmodclass -m command with the
DataClass group identifier to shorten the time limit
for the mintime parameter for DataClass groups in
the file system where this parameter is set relatively
high.
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The table below lists the reports generated by FileServ:
Reports
Report
Page
To view the parameter settings for each DataClass identifier,
follow the steps below:
DataClass
Report
Step 1.
Run the fsclassinfo command. Use the names of
a specified DataClass group on which to report.
Step 2.
An example of the output for a long report is
displayed below:
% fsclassinfo test1 -l
--------------------------------------------------------------------
Class Information Report
Class ID: test1
Tue Dec 29 09:11:27 1998
--------------------------------------------------------------------
Soft Limit:
Hard Limit:
Notify ID:
80 Max Copies:
95 Media Type:
root File Spanning:
XXDD File Cleanup:
2
D2S
n
Security Code:
MINTIME
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Account Number: 12345 Media Cleanup:
Drive Pool: fspool File Clustering:
CLASS
n
Default Copies: 1 Mintime (min):
10
Associated Directories:
/data/joe/prod001
/data/june/prod002
FS0000 31 174105 fsclassinfo completed: Command Successful.
To view a list of media suspected as fragmented, follow the
steps below:
Media
Fragmentation
Report
Step 1.
Run the fsmedcopy command. The level of
fragmentation is defined by options submitted with
the command
Use other appropriate options as needed. For
command information, refer to the Command
Reference book.
Step 2.
The output displayed below list all media that are at
least 25 percent used. Of that 25 percent, at least 25
percent is wasted or unusable space.
% fsmedcopy -f 25 -w 25
---------------------------------------------------------------------
Media Fragmentation Report Tue Dec 15 13:32:39 1998
---------------------------------------------------------------------
Media ID
ht0e01
222003
75d004
000005
343456
Fill Level
55.11
53.74
76.48
88.00
Wasted Space
28.20
76.12
44.90
92.46
85.92
75.87
FS0000 15 00895 fsmedcopy completed: Command Successful.
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In the example for media 000005, the amount of
wasted space is 92.46 percent, which represents.
81.36 percent of the total space.
To view a report showing media that has been removed or
added to the storage system, follow the steps below:
Media
Movement
Report
Step 1.
Run the fsmoverpt command to generate a report
that lists the movement of all media.
Use other appropriate options as needed. For
command information, refer to the Command
Reference book.
Step 2.
An example of the output is displayed below:
% fsmoverpt
---------------------------------------------------------------------
Media Movement Report Tue Dec 15 13:42:12 1998
---------------------------------------------------------------------
MediaID
srr001
cah005
jdd006
999007
986008
765009
MediaType
D2 small
D2 small
D2 small
D2 small
D2 small
D2 small
Date/Time
Movement
reentered
added
added
added
Comments
Dec 4 08:52:12
Dec 15 13:15:59
Dec 15 13:16:09
Dec 15 13:16:18
Dec 15 13:16:29
Dec 15 13:16:42
added
added
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To view a snapshot of FileServ requests waiting for resources,
follow the steps below:
Resource
Queue Report
Step 1.
To view all resource requests associated with your
storage system, run the fsqueue command without
options as shown below:
% fsqueue
---------------------------------------------------------------------
Resource Queue State
Fri Aug 29 13:35:57 1999
Request Volserv
Request Priority State
Drive Media Submitted
ID
13720
13720
ID
Type
C:M:A
5:5:20
5:5:20
ID
PROCESS N/A
PROCESS N/A
ID
N/A
N/A
424187015 STR
424187015 STR
Aug 29 1999
Aug 29 1999
---------------------------------------------------------------------
FS0000 03 13786 fsqueue completed: Command Successful.
The table below lists the Request Types and State
fields:
Request
Description
Enter Media
States
Description
Request in queue
ENT
EJE
Queue
Ready
Eject Media
Copy
Ready to process
Formatting
CPY
FMT
INS
Format
Verify
Format
Verify label
Inspect
Mount
Process
Copy
Mounting
N/A
RTV
STR
UNK
Not Available
Retrieve
Being Processed
Start copying
Being cancelled
Request completed
Store
Cancel
Complete
Unknown or Not Available
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Step 2.
Use other appropriate options as needed. For
command information, refer to the Command
Reference book.
To view a history of media and components, follow the steps
below:
History Report
Step 1.
Run the fshistrpt command with the -m mediaID
option for a media history report. A example of the
output is shown below:
% fshistrpt -m cah001
---------------------------------------------------------------------
Media History
Report
Tue Dec 15 13:59:44 1998
Media ID
Comments
Media Type
Date/Time State Change
---------------------------------------------------------------------
cah001
D2 Small
Dec 4 09:24:31protect
USER=root
cah001
D2 Small
Dec 4 12:94:27protect
USER=root
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Step 2.
Or, run the fshistrpt command with the -h
option for a component history report. An example
of the output is shown below:
% fshistrpt -h V0, 10, V0, 11, V0, 12, V0, 13, V0, 203
---------------------------------------------------------------------
Component History Report
Tue AUG 24 10:42:48 1998
---------------------------------------------------------------------
Component ID Status Change
Date/Time
AUG 3
AUG 3
AUG 3
AUG 3
Media In Use
10:40:02
10:50:40
10:54:30
10:54:30
10:04:20
V0,203
V0,12
V0,10
V0,10
V0,30
V0,10
OFFLINE
ONLINE
ONLINE
ONLINE
ONLINE
IN USE
AUG 3
AUG 3
To view a snapshot of current device states in the storage
systems, follow the steps below:
Component
Statistics
Report
Step 1.
Run the fschstate command without any options
to generate a report that shows all storage
subsystems and the state of FileServ.
Step 2.
Use other appropriate options as needed. For
command information, refer to the Command
Reference book.
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An example of the output is shown below:
% fschstate
---------------------------------------------------------------------
Component Status
Report
Thu Jan 21 17:27:52 1999
Component Alias
AMLJ_CTIII_DRO
AMLJ_CTIII_DR1
VolSub
Drive ID
101
State
ON
Status
FREE
FREE
N/A
Media ID
NONE
102
ON
NONE
N/A
ON
N/A
The FileServ system is active.
FS0000 07 1464244 fschstate completed: Command Successful.
* Drives not configured in FileServ.
+ Media mounted in a drive is unknown to FileServ.
To view a report of current drives and subsystems configured
into the storage systems, follow the steps below:
Hardware
Configuration
Report
Step 1.
Run the fsconfig command without options to
generate a report for all components.
Note
If the argument contains a space, put single
quotes around the argument.
Step 2.
Use other appropriate options as needed. For
command information, refer to the Command
Reference book.
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An example of the output is shown below:
% fsconfig
--------------------------------------------------------------------
Hardware Configuration Report
Component ID: V0,10
Thur Feb 4 16:41:41 1999
Device pathname:
user Alias:
Component Type:
Drive Type:
/dev/er90/s0
ER90_DR1
DRIVE
ER90
10
Drive ID:
Delay Time:
0
Hardware Configuration Report
Component ID: V0, 11
Thur Feb 4 16:41:41 1999
Device pathname:
User Alias:
Component Type:
Drive Type:
/dev/er90/s1
ER90_DR2
DRIVE
ER90
11
Drive ID:
Delay Time:
0
Hardware Configuration Report
Component ID: V0, 12
Thur Feb 4 16:41:41 1999
Device pathname:
User Alias:
Component Type:
Drive Type:
/dev/er90/s2
ER90_DR3
DRIVE
ER90
12
Drive ID:
Delay Time:
0
FS0000 22 02843 fsconfig completed: Command Successful.
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Before contacting technical support, follow the steps below:
Contact
Technical
Support
Step 1.
Obtain the following information:
• FileServ Serial Number: _________________
• Host ID: ____________________
Step 2.
Contact technical support and be prepared to supply
the above information to them.
Technical support can be reached as follows:
• In the USA and Canada, call 1-800-827-3822.
• Outside the USA and Canada, call 303-874-0188
or toll-free 00800-9999-3822.
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NOTES
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Index
A
command
add relation
AML archive
autostart
B
blank media
book
C
checkpointing
cleanup
policy . . . . . . . . . . . . . . . . . . . . . 2-34 contingency startup. . . . . . . . . . . . . . 1-23
trashcan . . . . . . . . . . . . . . . 1-20, 2-50 crontab . . . . . . . . . . . . . . . . . . . . . . . . 1-9
600716 Rev A
Index
INX-1
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D
data
F
file
database
dataclass
frequency of use
definition
device reconfiguration
disaster recovery
G
dismount
group definition
drives
I
interface
E
L
environment
location
INX-2
Index
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log file
messages
migration
M
management
mode
mediaclasstype
mediatype
N
P
parameter
policy
problems
procedures
publications
600716 Rev A
Index
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R
storage
reader
recovery processing
relation
report
reports
system
system parameter
ADVANCE_NOTIFICATION_ PE-
RIOD. . . . . . . . . . . . . . . . 1-40
requirement
COMMAND_EXTRACT_HEADER
1-43
S
scripts
security
shutdown
software
startup
INX-4
Index
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DEF_FILE_RETENTION_PERIOD.
1-40
FS_MAX_ACTIVE_ MEDCHECKS
1-31
FS_RSP2150_BLOCK _FACTOR . .
1-35
FS_VS_QUEUE_XXX
_THRESHOLD . . . . . . . 1-34
FS_VS_QUEUE_XXX_THRESHOL
D . . . . . . . . . . . . . . . . . . . 1-49
MAX_COPY_RETRIEVE _COUNT
1-33
MAX_TAPE_TO_TAPE_ALLOC_TI
ME . . . . . . . . . . . . . . . . . 1-33
FS_DRIVE_ERR _THRESHOLD . .
1-35
FS_EOT_SIZE_RESET_ FACTOR .
1-30
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PERCENT_FULL_TO_MIGRATE .
V
1-35
X
T
trashcan
troubleshoot
U
UNIX command
utility
INX-6
Index
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