vgchange.1m (2010 10)

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vgchange(1M) vgchange(1M)

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.

For volume group version 2.2 and higher, during deactivation, an

automatic backup of the volume group conﬁguration is saved at the loca-

tion conﬁgured (see vgcfgbackup (1M) for more details), unless the user has

explicitly used the

-A option (see below) to disable the backup.

-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 a high availability clus-

ter. The high availability software must be running; otherwise, the volume

group is not marked. Needs to be done on one node only.

-S may be

optionally speciﬁed with the

-c option to indicate whether the VG is shar-

able, and when the -c option is used without

-S the VG is marked not

sharable.

n Remove each speciﬁed volume group from membership in the high availa-

bility cluster. The high availability software does not have to be running to

perform this operation.

The volume group must be deactivated with the

-a n option before a -c yn

option can be executed.

-f Force deactivation of each speciﬁed volume group and its associated logical

volumes while a sync is in progress.

This option requires the deactivation option,

-a n, otherwise an error will be

returned.

This option is only valid for high availability clusters.

-l Disable the opening of logical volumes that belong to each speciﬁed volume

group. If the -l option is set, later attempts to open the logical volumes will

fail. To allow an opening of these logical volumes to succeed, deactivate and

activate the volume group without the -l option.

-p Activate each speciﬁed volume group only if all of the physical volumes that

belong to it are available.

-q quorum Set the quorum enforcement for each speciﬁed volume group. quorum can have

one of the following values:

y Enforce the quorum requirement. This is the default.

n Ignore the quorum requirement.

The

-q n option can be used to activate the volume group when the disk

quorum is not maintained because too many disks were lost. Since it ensures

the integrity of the LVM conﬁguration information, it is normally not advisable

to override the quorum.

-s Disable the synchronization of stale physical extents within the volume group

speciﬁed by vg_name. This option is only effective when used with the -a y or

-a e option.

-t quiesce_time Automatically resume normal read/write access to the volume group once the

speciﬁed quiesce_time (in seconds) has expired. This option should be used

when quiescing a volume group that contains critical resources (e.g., root or

swap logical volume) that are necessary for normal operation of the system, or

other circumstances where manually executing the vgchange -R may not be

possible once the volume group is quiesced. The quiesce_time can be any value

from 1 to 2ˆ31-1. This option is only valid when used with the -Q option.

HP-UX 11i Version 3: October 2010 − 3 − Hewlett-Packard Company 3