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System Programmer Reference › Restoring Data › TPI Restore Types › VOLSER Restore Jobs

VOLSER Restore Jobs

You can use VOLSER restore jobs when you know the volser of the tape on which a minidisk or file space that contains data to restore begins. In VOLSER restore jobs, CA VM:Backup does not search catalogs or scan the CP online directory or SFS file pools; it mounts only specified tapes (unless the requested data spans tapes) and searches for specified data on those tapes. VOLSER restore jobs can restore data to targets other than the source.

Only system administrators and authorized clients, such as CA VM:Archiver, can submit VOLSER restore jobs.

When a VOLSER restore job starts, CA VM:Backup performs these tasks:

  1. Verifies that the job submitter is authorized to submit the job
  2. Builds the source and target domain lists for the restore job using the data specified in the associated job template and exception files
  3. If restoring file pool data, verifies that the target file pools are available and that CA VM:Backup is a file pool administrator. For SFS data, CA VM:Backup acquires an exclusive lock on any file space or directory to which data is being restored.
  4. Sorts tapes specified in the exception file by volser, then by data set to ensure that they are mounted in the correct order
  5. Mounts the first tape and scans for all domains that the job indicates start on that tape
  6. When a domain is found, restores it to the targets specified in the job; if the domain spans tapes, CA VM:Backup mounts the next tape indicated in the tape trailer labels or in the CA VM:Tape TMC

    For file space restores that so specify, CA VM:Backup erases the existing directory structure. For all SFS data restores, CA VM:Backup enrolls any file space being restored if it does not already exist in the target file pool and restores the directory structure, base files, and authorizations as they existed at the time of the backup. For all BFS data restores, CA VM:Backup restores the directory structures, files, ownership, and permissions.

  7. Continues mounting tapes in order and restoring data as described in the previous two steps until it has restored all of the source domains specified in the restore job

    Note: If a selected domain is not found on a specified tape, processing ends for that domain and CA VM:Backup processes the next domain specified in the job.

  8. Restores SFS alias files specified in the restore job, if any, and relinquishes any locks obtained on any file spaces or directories
  9. Issues a message to all users who received a request to detach a minidisk, indicating that the target minidisks are now available for use