3PAR InForm® OS 2.2.4 CLI Administrator's Manual (320-200113 Rev A, March 2009)
15.12
Reclaiming Unused LD Space
3PAR InForm OS CLI Administrator’s Manual InForm OS Version 2.2.4
15.8.1 Tuning Volumes Individually
This section shows you how to tune a group of individual volumes so that they do not share
logical disks. This procedure also compacts the logical disks used by the volumes so that they
do not have any unused space.
If your volumes were created using the createaldvv command, perform the following:
1 Issue the
tunealdvv [-options] <VV_name> command.
2 Repeat for all volumes to be tuned.
If your volumes were create using the createvv command, perform the following:
1 Issue the
tunevv usr_cpg <CPG_name> command.
2 Repeat for all volumes to be tuned.
15.8.2 Tuning a Group of Volumes with Shared LDs
You can compact logical disks for a group of volumes that share logical disks by using the
compactld command. Existing regions on the fragmented logical disks are migrated to new,
fully utilized logical disks and the older ones are deleted so that unused space can be returned
to the system’s free chunklet pool.
X To reclaim unused logical disk space from the group of virtual volumes, issue the
compactld <LD_name> or compactld -pat <pattern> command. Refer to the
InForm OS Command Line Interface Reference for detailed information about this
command.
NOTE: When using the tunealdvv command, it is recommended that the same
options used during volume creation, minus the
-cnt option, are also specified
when tuning to maintain consistency (RAID type, etc.) between the untuned and
tuned volumes. See the complete
tunealdvv command and option information
available in the InForm OS Command Line Interface Reference.