Deleting a snapshot
Use the mmdelsnapshot command to delete GPFS snapshots of a file system.
For example, to delete snap1 for the file system fs1,
enter:
mmdelsnapshot fs1 snap1
The output is
similar to this: Invalidating snapshot files...
Deleting snapshot files...
100.00 % complete on Tue Feb 28 10:40:59 2012
Delete snapshot snap1 complete, err = 0
For complete usage information, see mmdelsnapshot command.