Use the vxrvg addlog command to add the DCM log to a volume. The vxrvg addlog command cannot be used to add a log to a volume which is already a Replicator Log for an RVG.

By default, Volume Replicator calculates the DCM size based on the size of the volume. The default size of the DCM ranges from 1KB to 256KB depending on the size of the volume. However, you can use the vxrvg addlog command to set the size of the DCM to a maximum of 2 MB. You can specify the logsize parameter in units of megabytes (MB) or kilobytes (KB). If you do not specify any suffix such as K for KB or M for MB after the logsize parameter, then it is taken as KB by default.

Syntax for vxrvg addlog command

vxrvg [-g <diskgroup>] addlog <volume> [logsize=value]

Example

vxrvg -g vvrdg addlog rep_vol logsize=2M