Veritas Storage Foundation Intelligent Storage Provisioning 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

87Administering application volumes
Removing logs from a volume
You can use storage attributes to specify the storage to be used for the logs. For
example, the following command adds a DCO plex to the volume, mirvol1,
using disk enc1_7:
# vxassist -g mydg -b addlog mirvol1 logtype=dco \
use_storage=’"DeviceName"="enc1_7"’
Removing logs from a volume
To remove logs from a volume, use the following command:
# vxassist [-g diskgroup ] [-f] remove log volume \
[nlogs=
number ] logtype= type [ attributes ...]
The supported log types are dco and raid5. By default, one RAID-5 log or one
plex of a DCO volume is removed. You can use the
nlogs attribute to specify the
number of logs or DCO plexes to remove. You can use storage attributes to
specify the storage to be removed. In the following example, a DCO plex on the
disk mydg11 is removed from the volume mirvol1:
# vxassist -g mydg remove log mirvol1 logtype=dco\
remove_storage=’"DM"="mydg11"’
To remove all logs of a particular type from a volume, use the following
command:
# vxassist [-g diskgroup ] removeall log volume logtype= type
Note: If you use the vxassist command to remove logs, you must specify the -f
(force) option to the command if the operation would violate any rules. For
example, the rules may imply that a volume must have minimum number of logs
of a particular kind. You must also specify the
-f option when removing a DCO
that is in use by DRL configured on a volume.
Monitoring and controlling ISP tasks
ISP performs management of objects (such as subdisks, plexes, and volumes).
Once these objects have been created, VxVM can start performing I/O with
them.
Note: The online transformation of an ISP volume is not necessarily complete if
the
vxtask command shows that synchronization of the volume has finished. A
small additional time is required to perform cleanup operations.
For example, if you create a 2-way mirrored volume in the background, ISP
creates an allocation task. When ISP has allocated storage for the volume, it
lays out the volume on that storage and then starts the volume. At this point,