Removing a snapshot volume

If a snapshot volume is no longer needed, you can remove it and free up the disk space for other uses by using the vxedit rm command.

Prerequisites

  • You must be logged in as root.

  • If the volume is on a mounted file system, you must unmount it before removing the volume.

To remove a snapplan and snapshot volume

  1. To remove the snapshot and free up the storage used by it:

    If the snapshot has been taken:

    • Remove the snapshot as follows:

      # vxsnap -g diskgroup dis snapshot_volume	
      # vxvol -g diskgroup stop snapshot_volume
      # vxedit -g diskgroup -rf rm snapshot_volume

    If the snapshot has not been taken and the snapshot plex (mirror) exists:

    • Remove the snapshot as follows:

      # vxsnap -g diskgroup rmmir volume
  2. Remove the DCO and DCO volume:

    # vxsnap -g diskgroup unprepare volume
  3. Remove the snapplan:

    # /opt/VRTS/bin/db2ed_vmchecksnap -D db -f snapplan -o remove

For example, the following commands will remove a snapshot volume from disk group PRODdg:

# vxsnap -g PRODdg dis snap_v1
# vxvol -g PRODdg stop snap_v1
# vxedit -g PRODdg -rf rm snap_v1