Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

Specify the -b option if you want to make the volume immediately available for
use.
See “Initializing and starting a volume” on page 326.
Creating a volume with a version 0 DCO volume
If a data change object (DCO) and DCO volume are associated with a volume, this
allows Persistent FastResync to be used with the volume.
See “How persistent FastResync works with snapshots” on page 67.
The version 0 data change object (DCO) and DCO volume layout was introduced
in VxVM 3.2. The version 0 layout supports traditional (third-mirror) snapshots,
but not full-sized instant snapshots, space-optimized instant snapshots nor DRL
configured within the DCO volume.
See “Determining the DCO version number” on page 362.
See “Version 0 DCO volume layout” on page 66.
See “Version 20 DCO volume layout” on page 66.
See “Creating a volume with a version 20 DCO volume” on page 316.
To perform fast resynchronization of mirrors after a system crash or reboot, you
must also enable dirty region logging (DRL) on a mirrored volume.
For more information about snapshots and DCO volumes, see the Veritas Storage
Foundation Advanced Features Administrator's Guide.
Note: You need a license to use the Persistent FastResync feature. If you do not
have a license, you can configure a DCO object and DCO volume so that snap
objects are associated with the original and snapshot volumes. However, without
a license, only full resynchronization can be performed.
See “How persistent FastResync works with snapshots” on page 67.
313Creating volumes
Creating a volume with a version 0 DCO volume