HP-UX Reference (11i v2 04/09) - 1M System Administration Commands A-M (vol 3)

lvchange(1M) lvchange(1M)

-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". 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.

EXTERNAL INFLUENCES

Environment Variables

LANG determines the language in which messages are displayed.

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

Change the permission of a logical volume to read-only:

lvchange -p r /dev/vg01/lvol3

Change the allocation policy of a logical volume to nonstrict:

lvchange -s n /dev/vg01/lvol7

Turn the mirror write cache off on a logical volume:

lvchange -M n /dev/vg01/lvol1

Change the IO timeout value of a logical volume to 1 minute (60 seconds):

lvchange -t 60 /dev/vg01/lvol1

WARNINGS

For root, swap or dump logical volumes, the allocation policy is always contiguous. This attribute cannot

be changed with lvchange.