-f unmount

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This command releases all resources on the offload server that were used by the mount command.

For normal mode, the unmount is completed by one mount agent for each backup server. A mount agent is started by the launchpad daemon that runs on the respective backup server. The following steps are completed by the software:
  1. Unmount the file system that belongs to the target volumes.
  2. Export the assigned volume group.
  3. Remove the devices, vpath/hdisk, from the offload system.
When extra options, which are known as filter arguments, are specified, a specific snapshot backup can be selected for unmounting from the offload system. Use -B to identify the specific backup as follows:
 -B <backup-id>

(DB2®) In a DPF environment with multiple partitions, IBM® Storage Protect Snapshot unmounts all partitions that are associated with a snapshot backup.

If the unmount does not succeed because of problems that are related to the device agent, the usability state of the backup remains MOUNTED in the snapshot backup repository. After resolving the problems on the backup system, the fcmcli unmount command must be issued again. The command is issued again to finalize the unmount of the file systems and update the usability state of the backup in the snapshot backup repository. If an off-loaded tape backup is running, the usability state TAPE_BACKUP_IN_PROGRESS is set and those backups are not be picked by IBM Storage Protect Snapshot for unmounting.

Unexpected system failures with offloaded tape backups can lead to an incorrect state of the backup reflected in the snapshot backup repository. The state TAPE_BACKUP_IN_PROGRESS is set. A built-in force option, -F, for the fcmcli unmount function is used to return the system to a usable state. Besides the normal unmount function, the unmount force option picks backups in the TAPE_BACKUP_IN_PROGRESS state as candidates to be unmounted and to reset the TAPE_BACKUP_IN_PROGRESS usability state for those backups. The -B option is specified to uniquely identify the backup that is involved.