Veritas FlashSnap Point-In-Time Copy Solutions 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

44 Off-host cluster file system backup
Using off-host processing to back up cluster file systems
2 On the master node, refresh the contents of the snapshot volumes from the
original volume using the following command:
# vxsnap -g volumedg refresh snapvol source= vol \
[
snapvol2 source= vol2 ]... syncing=yes
The syncing=yes attribute starts a synchronization of the snapshot in the
background.
For example, to refresh the snapshot scfs_vol:
# vxsnap -g exampledg refresh scfs_vol source=cfs_vol \
syncing=yes
3 On the master node, use the following command to wait for the contents of
the snapshot to be fully synchronous with the contents of the original
volume:
# vxsnap -g volumedg syncwait snapvol
For example, to wait for synchronization to finish for the snapshots
scfs_vol:
# vxsnap -g exampledg syncwait scfs_vol
Note: You cannot move a snapshot volume into a different disk group until
synchronization of its contents is complete. You can use the
vxsnap print
command to check on the progress of synchronization.
4 On the master node, use the following command to split the snapshot
volume into a separate disk group, snapvoldg, from the original disk group,
volumedg:
# vxdg split volumedg snapvoldg snapvol
For example, to place the snapshot of the volume cfs_vol into the shared
disk group splitdg:
# vxdg split exampledg splitdg scfs_vol
5 On the master node, deport the snapshot volume’s disk group using the
following command:
# vxdg deport snapvoldg
For example, to deport the disk group splitdg:
# vxdg deport splitdg
6 On the OHP host where the backup is to be performed, use the following
command to import the snapshot volume’s disk group:
# vxdg import snapvoldg
For example, to import the disk group splitdg:
# vxdg import splitdg