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354 Administering volume snapshots
Creating traditional third-mirror break-off snapshots
2 Use the vxassist mirror command to create mirrors of the existing
snapshot volume and its DCO volume:
# vxassist -g diskgroup mirror snapshot
# vxassist -g diskgroup mirror $DCOVOL
Note: The new plex in the DCO volume is required for use with the new data
plex in the snapshot.
3 Use the
vxprint command to find out the name of the additional snapshot
plex:
# vxprint -g diskgroup snapshot
4 Use the vxprint command to find out the record ID of the additional DCO
plex:
# vxprint -g diskgroup -F%rid $DCOVOL
5 Use the vxedit command to set the dco_plex_rid field of the new data
plex to the name of the new DCO plex:
# vxedit -g diskgroup set dco_plex_rid=dco_plex_rid new_plex
The new data plex is now ready to be used to perform a snapback operation.
Dissociating a snapshot volume
The link between a snapshot and its original volume can be permanently broken
so that the snapshot volume becomes an independent volume. Use the following
command to dissociate the snapshot volume, snapshot:
# vxassist snapclear snapshot