Difference between revisions of "BXadmin:AFS Backups"

Revision as of 12:42, 1 April 2010

afs-backup.pl and associated scripts are here: http://github.com/phalenor/afs-backup

Installed into /afs/bx.psu.edu/service/afs-backup

Should probably make that /afs/bx.psu/edu/service/afs/backup ?

Testing directory is under testing/, with testing/etc/ -> etc/ and testing/var/ -> var/

Directory layout

• var/
  • acl/
    • <volume name> - contains acls for that volume
  • log/ - contains dsmc logs right now
  • mounts/
    • mounts-by-path
    • mounts-by-volume
  • tmp/
  • vldb/
    • vldb.<date> - these should be routinely gzip'd
• etc/
  • common/ - config files common to all backup hosts
  • hosts/
    • <short hostname>/ - config files for <short hostname>

Config files

• basepath : Usually /afs/<cell>. This is used if paths specified in *-by-path files aren't relative
• tsm mode
  • tsm-backup-tmp-mount-path : Absolute path to a temporary directory in AFS to mount root.cell.backup
  • dsm.sys.head : The top of the dsm.sys file to be generated
  • exclude.list : TSM exclude file
  • tsm-backup-by-path : List of path regexes to backup. Can prefix entries with ! to explicitly exclude.
  • tsm-backup-by-volume : List of volume regexes to backup. Can prefix entries with ! to explicitly exclude.
  • tsm-policy-by-path : List of path regexes and the TSM management class to bind those paths to, separated by whitespace
  • tsm-policy-by-volume : List of volume regexes and the TSM management class to bind the shortest mountpoint for those volumes (by number of characters) to, separated by whitespace
  • tsm-policy-default : Default management class to be used
  • tsm-policy-order : Order in which to select management class. Can be either "path volume" or "volume path"
• vosbackup mode
  • vosbackup-by-path : List of path regexes to vos backup
  • vosbackup-by-volume : List of volume regexes to vos backup

cron

Call all scripts with k5start -t -U -f <path/to/keytab> <script>

• daily-findmounts.sh - calls afs-backup.pl in find-mounts mode. logic for determining which paths to traverse is in the script itself
• daily-vosbackup.sh - calls afs-backup.pl in vosbackup mode.
• daily-tsm.sh - calls afs-backup.pl in tsm mode.