Displaying Snapshot copy use and dependencies

The snap list command displays the notation “busy” after the name of a Snapshot copy if the Snapshot copy is being actively used by an application.

Step

1. Enter the following command: snap list vol0

   Volume vol0
   %/used 	 %/total  date name
   -------- ------   ------------ --------
   0% ( 0%) 0% ( 0%) Jan 19 08:01 hourly.0 (busy)
   1% ( 1%) 1% ( 1%) Jan 19 00:01 nightly.0(snapmirror)
   2% ( 2%) 2% ( 2%) Jan 18 20:01 hourly.1 (busy,snapmirror)
   3% ( 2%) 2% ( 2%) Jan 18 16:01 hourly.2
   3% ( 2%) 3% ( 2%) Jan 18 12:01 hourly.3
   5% ( 3%) 4% ( 3%) Jan 18 00:01 nightly.1 (backup[9])
   7% ( 4%) 6% ( 4%) Jan 17 00:00 nightly.2
   8% ( 4%) 7% ( 4%) Jan 16 00:01 nightly.3
   10%( 5%) 9% ( 4%) Jan 15 00:01 nightly.4

   The snap list command also displays the name of an application next to a Snapshot copy name if the application needs the Snapshot copy currently or at a later time. For example, “backup” is displayed next to the Snapshot copy name to show that the Snapshot copy is the result of a dump command transfer that was interrupted but is restartable. The number following “backup” is the backup ID assigned by the backup status command. The notation “snapmirror” next to the Snapshot copy name means that SnapMirror is retaining the Snapshot copy to maintain a source-destination relationship.

   Note: Ownership information for a busy Snapshot copy is useful for determining whether to stop the activity in progress. For example, if the snap list command output displays a locked Snapshot copy that is imposing a resource constraint, you can delete that Snapshot copy and free up space.