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IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive ...

IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive ...

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However, you might want to associate the snapshot data with the data alreadyprocessed <strong>for</strong> the /usr file system. Using the snapshotroot option, you canassociate the data with the file space corresponding to the /usr file system on the<strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> server:dsmc incremental /usr -snapshotroot=/snapshot/day1On a subsequent day, you can back up a snapshot that was written to an alternatelocation, but managed under the same file space on the server:dsmc incremental /usr -snapshotroot=/snapshot/day2You can per<strong>for</strong>m incremental backups, selective backups, or archives of a singledirectory, directory structure, or single file using the snapshotroot option. In allinstances, the snapshotroot option must identify the root of the logical volume thatwas created by the snapshot. For example:dsmc incremental /usr/dir1/* -subdir=yes-snapshotroot=/snapshot/day1dsmc selective /usr/dir1/sub1/file.txt-snapshotroot=/snapshot/day1dsmc archive /usr/dir1/sub1/*.txt-snapshotroot=/snapshot/day1If you want to include or exclude specific file specifications, the include <strong>and</strong>exclude statements should contain the name of the file system that was the sourceof the snapshot (the /usr file system), <strong>and</strong> not the name of the target of thesnapshot (/snapshot/day1). This allows you to preserve a set of include <strong>and</strong>exclude statements regardless of the name of the logical volume to which thesnapshot is written. The following are examples of include <strong>and</strong> exclude statements.include /usr/dir1/*.txt 1yrmgmtclassexclude /usr/mydocs/*.txtThe following include-exclude statements are not valid because they contain thename of the snapshot:include /snapshot/day1/dir1/*.txt 1yrmgmtclassexclude /snapshot/day1/mydocs/*.txtYou must use the snapshotroot option in conjunction with a single filespecification <strong>for</strong> a incremental, selective, or archive operation. You cannot specifymultiple file specifications or no file specifications. For example, these comm<strong>and</strong>sare valid:dsmc incremental /usr -snapshotroot=/snapshot/day1dsmc incremental /usr/dir1/* -snapshotroot=/snapshot/day1The following comm<strong>and</strong> is invalid because it contains two file specifications:dsmc incremental /usr/dir1/* /home/dir2/*-snapshotroot=/snapshot/day1The following comm<strong>and</strong> is invalid because it contains no file specification:dsmc incremental -snapshotroot=/snapshot/day1Note:1. Ensure that the snapshotroot references a snapshot of the correct volume.Ensure that snapshotroot refers to the root of the snapshot. If these rules arenot followed, unintended results such as files expiring incorrectly can result.2. You cannot use the snapshotroot option in conjunction with the filelist option.3. You cannot use the snapshotroot option with the snapdiff option.406 <strong>IBM</strong> <strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> <strong>for</strong> <strong>UNIX</strong> <strong>and</strong> <strong>Linux</strong> <strong>Backup</strong>-<strong>Archive</strong> Clients Version 6.1: Installation <strong>and</strong> User’s Guide

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