Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

The storage space that is used by the deleted
volume is reclaimed after
reclaim_on_delete_wait_period days.
The value of the tunable can be anything
between -1 to 367.
The default is set to 1, which means the
volume is deleted the next day. The storage
is reclaimed immediately if the value is -1.
The storage space is not reclaimed
automatically, if the value is greater than
366. It can only be reclaimed manually using
vxdisk reclaim command.
reclaim_on_delete_wait_period
This tunable specifies the time of the day
that the reclaim on the deleted volume is
performed.
The default time is set to 22:10. This value
can be changed to any time of the day.
reclaim_on_delete_start_time
You can change the tunables using the vxdefault command.
Thin Reclamation of a disk, a disk group, or an enclosure
Use the vxdisk reclaim command to trigger online Thin Reclamation on one or
more disks, disk groups, or enclosures. By default, the vxdisk reclaim command
performs Thin Reclamation on the disks where the VxVM volume is on a “mounted”
VxFS file system. The reclamation skips disks that do not have a VxFS file system
mounted.
Use the -o full option of the vxdisk reclaim command to also reclaim disk
space in unmarked space on the disks.
You can only perform Thin Reclamation on LUNS which have the thinrclm
attribute.
See “Identifying thin and thin reclamation LUNs ” on page 343.
Example of reclamation for disks. The following example triggers reclamation on
LUNs disk1 and disk2:
# vxdisk reclaim disk1 disk2
In the above example, suppose the disk1 contains a VxVM volume vol1 with a
VxFS file system. If the VxFS file system is not mounted, the command skips
reclamation for disk1.
345Administering volumes
Reclamation of storage on thin reclamation arrays