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

Removing a traditional DRL log
You can use the vxassist remove log command to remove a traditional DRL log
that is configured within a DRL plex. The command will not remove a DRL log
that is configured within a version 20 DCO.
To remove a traditional DRL log
◆
Type the following command:
# vxassist [-g diskgroup] remove log volume logtype=drl [nlog=n]
By default, the vxassist command removes one log. Use the optional attribute
nlog=n to specify the number of logs that are to remain after the operation
completes.
You can use storage attributes to specify the storage from which a log will be
removed. For example, to remove a log on disk mydg10 from volume vol01,
enter the following command.
Note: The ! character is a special character in some shells. The following
example shows how to escape it in a bash shell.
# vxassist -g mydg remove log vol01 \!mydg10 logtype=drl
Upgrading existing volumes to use version 20 DCOs
You can upgrade a volume created before VxVM 4.0 to take advantage of new
features such as instant snapshots and DRL logs that are configured within the
DCO volume. You must upgrade the version of the disk groups, remove snapshots
and version 0 DCOs that are associated with volumes in the disk groups, and
configure the volumes with version 20 DCOs.
The plexes of the DCO volume require persistent storage space on disk to be
available. To make room for the DCO plexes, you may need to add extra disks to
the disk group, or reconfigure volumes to free up space in the disk group. You can
also add disk space by using the disk group move feature to bring in spare disks
from a different disk group.
See “Reorganizing the contents of disk groups” on page 250.
The vxsnap prepare command automatically enables FastResync on the volume
and on any snapshots that are generated from it.
If the volume is a RAID-5 volume, it is converted to a layered volume that can be
used with snapshots and FastResync.
Administering volumes
Upgrading existing volumes to use version 20 DCOs
366