Veritas Storage Foundation Intelligent Storage Provisioning 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009
To remove a cache completely, including the cache object, its cache volume and all
space-optimized snapshots that use the cache
1
Use the following command to find out the names of the top-level snapshot
volumes that are configured on the cache object:
# vxprint -g diskgroup -vne \
"v_plex.pl_subdisk.sd_dm_name ~ /cache_object/"
where cache_object is the name of the cache object.
2
Remove all the top-level snapshots and their dependent snapshots.
This can be done with the following single command:
# vxedit -g diskgroup -r rm snapvol ...
where snapvol is the name of a top-level snapshot volume.
3
Stop the cache object, with the following command:
# vxcache -g diskgroup stop cache_object
4
Remove the cache object and its cache volume, with the following command:
# vxedit -g diskgroup -r rm cache_object
Creating instant snapshots
Instant snapshots of ISP application volumes in a disk group’s data pool are best
created in clone pools that are also associated with the same disk group. A snapshot
of a snapshot does not have to be in the same clone pool as its parent.
Volume sets can be used in place of volumes with the following vxsnap operations
on instant snapshots: addmir, dis, make, prepare, reattach, refresh,
restore, rmmir, split, syncpause, syncresume, syncstart, syncstop,
syncwait, and unprepare.
A snapshot of a volume set must itself be a volume set. A full-sized instant snapshot
of a volume set can be created using a prepared volume set. You cannot use the
nmirrors or plex attributes to specify that existing plexes are to be broken off.
See the section “Creating and Administering Volume Sets” in the Veritas Volume
Manager Administrator’s Guide for more information on creating volume sets.
You may need an additional license to use this feature.
VxVM allows you to make instant snapshots of volumes by using the vxsnap
command.
107Administering instant snapshots
Creating instant snapshots