HP-UX Reference (11i v2 07/12) - 1M System Administration Commands N-Z (vol 4)

v
vgchange(1M) vgchange(1M)
part of a high availability cluster, it is activated in exclusive read-
write mode, as for the -a e option.
e Activate each specified volume group and all associated physical and
logical volumes for exclusive read-write access. The volume group
must be marked as part of a high availability cluster, and the availa-
bility software must be running on the system; otherwise, the volume
group is not activated.
With the -x option, the activation mode of a shared volume group is
changed to exclusive. The volume group will remain active during the
operation. The operation will not be performed if the volume group is
active in more than one node, or if it is not currently in shared mode.
s Activate each specified volume group and all associated physical and
logical volume for shared read-write access. The volume group must
be marked as part of a high availability cluster and marked sharable;
otherwise, the volume group is not activated.
Please note HP MirrorDisk/UX software is only supported in a
clustered environment with a maximum of two nodes configured.
With the -x option, the activation mode of a shared volume group is
changed to shared. The volume group will remain active during the
operation. The operation will only be performed if the current activa-
tion mode of the volume group is exclusive.
If the -a y or -a e option is executed on a currently active volume group,
without the -x option, vgchange attempts to include any physical volumes
that were previously listed as missing. This is useful if a physical volume has
come back online. However, no automatic synchronization of any mirrored logi-
cal volumes is done. If synchronization is required, execute the
vgsync com-
mand (see vgsync(1M)).
r Activate each specified volume group and all associated physical and
logical volumes for read-only access. This option is ignored for a
volume group that is already activated.
If a volume group is marked as part of a high availability cluster, the
high availability software must be running on the system; otherwise,
the volume group is not activated.
n Deactivate each specified volume group and its associated logical
volumes. You must close the logical volumes prior to executing this
option. For example, if the logical volume contains a file system, the
file system must be unmounted.
-c cluster Control the membership of volume groups in a high availability cluster. cluster
can have one of the following values:
y Mark each specified volume group as a member of the high availabil-
ity cluster. The high availability software must be running; other-
wise, the volume group is not marked. Needs to be done on one node
only.
n Remove each specified volume group from membership in the high
availability cluster. The high availability software does not need to be
running.
The volume group must be deactivated with the -a n option before a -c yn
option can be executed.
-S sharable Control the sharability of volume groups in a high availability cluster. sharable
can have one of the following values:
y Mark each specified volume group as sharable. The high availability
software must be running; otherwise, the volume group is not
marked. Needs to be done on one node only.
608 Hewlett-Packard Company − 2 − HP-UX 11i Version 2: December 2007 Update