HP-UX Reference (11i v2 04/09) - 1M System Administration Commands N-Z (vol 4)

p
pvchange(1M) pvchange(1M)
y Allow allocation of additional physical extents on the physical
volume. This is the default.
n Prohibit allocation of additional physical extents on the physical
volume. However, logical volumes residing on the physical volume
are accessible.
-t IO_timeout Set IO_timeout for the physical volume to the number of seconds indicated.
An IO_timeout value of zero (0) causes the system to use the default value sup-
plied by the device driver associated with the physical device. IO_timeout is
used by the device driver to determine how long to wait for disk transactions
to complete before concluding that an IO request can not be completed (and
the device is offline or unavailable).
-z sparepv This option requires the installation of the optional HP MirrorDisk/UX
software. It allows you to change the physical volume specified by pv_path into
a spare physical volume for its volume group, or change the specified spare
physical volume back into a regular physical volume for this volume group. No
physical extents from a spare physical volume will be available as part of the
"free" pool of extents in the volume group. A spare physical volume will only be
used in the event that another physical volume within this volume group
becomes unavailable (fails). sparepv can have one of the following values:
y Change the specified physical volume to be a "stand-by" spare for its
volume group. The specified physical volume must not have extents
allocated on it (i.e., no logical volumes residing on it) at the time
this command is issued. A stand-by spare physical volume will only
be used in the event of a failure of another physical volume -- prior
to such a failure, no logical volume is allowed to reside on it.
n Change the specified spare physical volume back into a regular
physical volume. If the physical volume was a stand-by spare, then
all of the disk space associated with it will be immediately available
for use by logical volumes. If the physical volume is an "active"
spare, that is, it was previously a stand-by spare but then took over
for a failed physical volume, it will simply mark the physical
volume as a regular member of its volume group and the logical
volumes residing on it will remain unchanged.
EXTERNAL INFLUENCES
Environment Variables
LANG determines the language in which messages are displayed.
If
LANG is not specified or is null, it defaults to C (see lang(5)).
If any internationalization variable contains an invalid setting, all internationalization variables default
to
C (see environ (5)).
EXAMPLES
Prohibit the allocation of additional physical extents to a physical volume:
pvchange -x n /dev/dsk/c0t0d0
Allow the allocation of additional physical extents to a physical volume:
pvchange -x y /dev/dsk/c0t0d0
Only switch paths when the current path is unavailable. Do not switch back to a prior path which had
failed and has recovered, when the current path works:
pvchange -S n /dev/dsk/c0t0d0
Switch paths whenever a better path becomes available again after a failure, even if the current path is
fine:
pvchange -S y /dev/dsk/c0t0d0
Manually switch a physical volume to use another controller path:
Section 1M−−638 Hewlett-Packard Company − 2 − HP-UX 11i Version 2: September 2004