Parameters:
Name Type Description Mandatory
cg Object name Name of a Consistency
Group.
Y
vol Object name Name of the volume to
add.
Y
This command adds a volume to a Consistency Group. The Consistency Group is
capable of containing up to 128 volumes.
Requirements for successful command completion:
v The volume and Consistency Group have to be associated with the same pool.
v The volume is not already part of a Consistency Group.
v The volume can not be a snapshot.
v The Consistency Group has less than the max number of volumes (see above).
Adding a mirrored volume to a non-mirrored Consistency Group:
v Such an addition always succeeds and the volume will retain its mirroring
settings.
Requirements for successful command completion for a mirrored Consistency
Group:
v The command must be issued only on the master Consistency Group.
v The command can not be run during an initialization of the volume or the
Consistency Group.
v The volume does not have any outstanding ad-hoc sync jobs.
v The volume has to be mirrored, and its following mirroring settings must be
identical to those of the Consistency Group: mirroring type (e.g., synchronous),
mirroring status, mirroring target, target pool, designation.
v In addition, for a mirrored Consistency Group that is defined as sync_best_effort
(synchronous):
– The synchronization status of both volume and Consistency Group has to be
Synchronized.
v For a mirrored Consistency Group that is defined as async_interval
(asynchronous):
– The volume and Consistency Group must have the following identical
settings and values: schedule, remote schedule, timestamp of the
last_replicated snapshot.
– Their both synchronization status is RPO_OK
v The link has to be up.
Adding a mirrored volume to a mirrored Consistency Group will also add the
volume's peer to the Consistency Group's peer. Once added, the mirrored volume
will be set the RPO of the mirrored Consistency Group.
The mirrored Consistency Group has one sync job for all pertinent mirrored
volumes within the Consistency Group.
In case of acknowledgment time out:
78 IBM XIV Storage System User Manual
To Next Page
Loading...
Need help?
General
