VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

Implementing Off-Host Processing Solutions
94 VERITAS Storage Foundation ISP Administrator’s Guide
4. On the primary host, if you temporarily suspended updates to the volume by a database in
step 2, release all the tables from hot backup mode.
5. The snapshot volume must be completely synchronized before you can move it into another
disk group. You can use the vxsnap syncwait command to wait for the synchronization to
complete as shown here:
# vxsnap -g volumedg syncwait snapvol
The vxsnap syncwait command exits with an exit code of zero when the snapshot volume
has been synchronized with the parent volume.
If required, you can use the following command to verify whether the
V_PFLAG_INCOMPLETE flag is set on a volume:
# vxprint [-g diskgroup] -F%incomplete snapvol
This command returns the value off if synchronization of the volume, snapvol, is complete;
otherwise, it returns the value on.
6. On the primary host, use the following command to split the clone storage pool containing the
snapshot volume into a separate disk group, snapvoldg, from the original disk group,
volumedg:
# vxdg split volumedg snapvoldg clonepool
7. On the primary host, deport the snapshot volume’s disk group using the following command:
# vxdg deport snapvoldg
8. 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
9. The snapshot volume is initially disabled following the split. Use the following commands on
the OHP host to recover and restart the snapshot volume:
# vxrecover -g snapvoldg -m snapvol
# vxvol -g snapvoldg start snapvol
10. On the OHP host, back up the snapshot volume. If you need to remount the file system in the
volume to back it up, first run fsck on the volume. The following are sample commands for
checking and mounting a file system:
# fsck -F vxfs /dev/vx/rdsk/snapvoldg/snapvol
# mount -F vxfs /dev/vx/dsk/snapvoldg/snapvol mount_point
Back up the file system at this point, and then use the following command to unmount it.
# umount mount_point