lvchange.1m (2010 09)

l
lvchange(1M) lvchange(1M)
the auto_prealloc_enabled
flag is not set, then at the threshold
value, the increment messages will be logged in the systems
syslog for
the user to take action.
-r relocate This parameter is valid for volume group version 1.0 only. For volume
group versions 2.0 or higher, it is ignored and relocation is never sup-
ported.
Set the logical volume bad block relocation policy. This is an obsolete
flag available only to provide compatibility with prior HP-UX releases.
The relocate flag can have one of the following values:
y|n|N
This release does not provide the LVM bad block relocation feature;
but for compatibility reasons, the value is maintained as a logical
volume attribute. Displaying the logical volume attributes will
show the value of the flag selected. However, regardless of the
selection, no new relocations will be done.
If the volume group is activated on a different HP-UX release that
provides the bad block relocation feature, bad blocks may be relo-
cated depending upon the value of this flag. Although no new relo-
cations will be done, any bad block relocations present on a logical
volume (activated on HP-UX releases that provided this feature)
will be honored when the volume group is activated on this HP-UX
release.
y is the default value of this flag.
-s strict Set the strict allocation policy. Mirror copies of a logical extent can be
allocated to share or not share the same physical volume or physical
volume group. This option only makes sense when the physical volumes
of the volume group that owns the specified logical volume reside on
different physical disks.
strict can have one of the following values:
y Set a strict allocation policy. Mirrors of a logical extent cannot
share the same physical volume.
g Set a PVG-strict allocation policy. Mirrors of a logical extent can-
not share the same physical volume group.
n Do not set a strict or a PVG-strict allocation policy. Mirrors of a
logical extent can share the same physical volume.
When a logical volume is mirrored, the following changes are not
allowed:
• From nonstrict to strict
• From nonstrict to PVG-strict
• From strict to PVG-strict
-t IO_timeout Set the IO_timeout for the logical volume to the number of seconds indi-
cated. This value will be used to determine how long to wait for IO
requests to complete before concluding that an IO request cannot be com-
pleted. An IO_timeout value of zero (0) causes the system to use the
default value of "forever".
The logical volume IO_timeout might not be honored if the volume group
quorum is lost while IOs that require on-disk LVM configuration data to
be updated are in progress. All IOs for the logical volume may hang till
the volume group quorum is restored.
NOTE: The actual duration of the request may exceed the specified
IO_timeout value when the underlying physical volume(s) have timeouts
which either exceed this IO_timeout value or are not integer multiples of
this value.
4 Hewlett-Packard Company − 4 − HP-UX 11i Version 3: September 2010