Persistency Framework AFS areas

AFS release areas

The Persistency Framework releases are installed at CERN in the following AFS areas:

  • /afs/cern.ch/sw/lcg/app/releases/COOL
  • /afs/cern.ch/sw/lcg/app/releases/CORAL
  • /afs/cern.ch/sw/lcg/app/releases/POOL

AFS internal areas

Two large AFS areas are available for internal development on COOL and CORAL:

  • /afs/cern.ch/sw/lcg/app/releases/COOL/internal
  • /afs/cern.ch/sw/lcg/app/releases/CORAL/internal

In addition, two AFS areas are available for common scripts and configuration files for POOL and COOL:

  • /afs/cern.ch/sw/lcg/app/cool
  • /afs/cern.ch/sw/lcg/app/pool

How to recover AFS files from backup

The COOL and CORAL internal areas, as well as other AFS project files and AFS user files, are backed up. See https://espace.cern.ch/it-faqs/Lists/faqs/DispForm.aspx?ID=6.

Recover AFS user files from the last backup (yesterday)

If you need to recover AFS user files from yesterday's backup, e.g. for user cooluser, just look in /afs/cern.ch/ubackup/c/cooluser.

Recover AFS project files from the last backup (yesterday)

If you need to recover AFS project files from yesterday's backup, follow the recipe in http://cnlart.web.cern.ch/cnlart/226/art_afs.html:

  1. Find the volume name.
    • For instance: fs exam /afs/cern.ch/sw/lcg/app/releases/COOL/internal
    • The example above will return p.sw.lcg.coolint
  2. Examine the volume and its backup.
    • For instance: /usr/sbin/vos exam p.sw.lcg.coolint
    • For instance: /usr/sbin/vos exam p.sw.lcg.coolint.backup
  3. Mount the volume backup.
    • For instance: fs mkmount ~/temp p.sw.lcg.coolint.backup
  4. Copy the files.
    • For instance: ls ~/temp
  5. Unmount the volume backup.
    • For instance: fs rmmount ~/temp

Recover AFS (user or project) files from an older backup (older than yesterday)

If you need to recover files older than yesterday, just use afs_admin recover <file>.

-- AndreaValassi - 09-Aug-2010

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Topic revision: r2 - 2011-02-21 - AndreaValassi
 
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