Veritas File System (VxFS) supports reclamation of free storage on a Thin Storage LUN. Free storage is reclaimed using the fsadm command or the vxfs_ts_reclaim API. You can perform the default reclamation or aggressive reclamation. If you used a file system for a long time and must perform reclamation on the file system, Symantec recommends that you run aggressive reclamation. Aggressive reclamation compacts the allocated blocks, which creates larger free blocks that can potentially be reclaimed.
See the fsadm_vxfs
(1M) and vxfs_ts_reclaim
(3) manual pages.
Thin Reclamation is only supported on file systems mounted on a VxVM volume.
The following example performs aggressive reclamation of free storage to the Thin Storage LUN on a VxFS file system mounted at /mnt1
:
# /opt/VRTS/bin/fsadm -R /mnt1
Veritas File System also supports reclamation of a portion of the file system using the vxfs_ts_reclaim() API.
See the Veritas File System Programmer's Reference Guide.