If you are going to create a full-sized break-off snapshot volume, you can use the following command to add new snapshot mirrors to a volume:
vxsnap [-b] [-g
The volume must have been prepared using the
See "Preparing a volume for DRL and instant snapshots" on page 284.
If a volume set name is specified instead of a volume, the specified number of plexes is added to each volume in the volume set.
By default, the
addmir command adds one snapshot mirror to a volume unless you use the
nmirror attribute to specify a different number of mirrors. The mirrors remain in the
SNAPATT state until they are fully synchronized. The
-b option can be used to perform the synchronization in the background. Once synchronized, the mirrors are placed in the
For example, the following command adds 2 mirrors to the volume,
vol1, on disks
vxsnap -g mydg addmir vol1 nmirror=2 alloc=mydg10,mydg11
This command is similar in usage to the
snapstart command, and supports the traditional third-mirror break-off snapshot model. As such, it does not provide an instant snapshot capability.
Once you have added one or more snapshot mirrors to a volume, you can use the
make command with either the
nmirror attribute or the
plex attribute to create the snapshot volumes.