pvchange.1m (2012 03)

pvchange(1M) pvchange(1M)

Set the IO_timeout value for a physical volume to zero (0) to use the driver default:

pvchange -t 0 /dev/dsk/c2t0d2

Change the (empty) physical volume to become a stand-by spare for the volume group:

pvchange -z y /dev/dsk/c2t0d2

Change the (active or stand-by) spare physical volume to become a regular member of the volume group:

pvchange -z n /dev/dsk/c2t0d2

Enable LVM’s proactive polling of alternate links

pvchange -p y /dev/dsk/c2t0d2

Disable LVM’s proactive polling of alternate links

pvchange -p n /dev/dsk/c2t0d2

Detach a path to a physical volume

pvchange -a n /dev/dsk/c2t0d2

Detach all the paths to a physical volume

pvchange -a N /dev/dsk/c2t0d2

Attach a path to a physical volume

pvchange -a y /dev/dsk/c2t0d2

The vgchange command may be used to attach all the physical volumes in the volume group and

resume, automatically attaching the failed physical volumes.

vgchange -a y /dev/vg_work

Enable Half Dead Disk Detection by setting both -C and -T thresholds:

pvchange -C 1200 -T 14400 /dev/disk/disk80

Enable Half Dead Disk Detection by setting only -T threshold to 6 hours:

pvchange -T 21600 -C 0 /dev/disk/disk80

Disable Half Dead Disk Detection by resetting both -C and -T thresholds:

pvchange -C 0 -T 0 /dev/disk/disk80

Reset the media error counters:

pvchange -R m /dev/disk/disk80

WARNINGS

If the Mass Storage Subsystem multipath solution is enabled, the pvchange command options that are

link speciﬁc may not stop I/Os or switch links, as they did in earlier releases. This means that

pvchange -a n, pvchange -s, and pvchange -S may not stop all I/Os on a given path. The

scsimgr command should be used to disable the links.

When the proactive polling is enabled, LVM will not be testing alternate links unless legacy mode is in

operation, even if legacy paths are being used.