HP-UX Reference (11i v1 00/12) - 1M System Administration Commands A-M (vol 3)

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/build/1111/BRICK/man1m/!!!intro.1m

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lvsplit(1M) lvsplit(1M)

(Requires Optional HP MirrorDisk/UX Software)

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

Split the mirrored logical volume /dev/vg00/lvol1 into two copies. Call the new logical volume

/dev/vg00/lvol1backup:

lvsplit -s backup /dev/vg00/lvol1

Split the mirrored logical volume /dev/vg00/lvol1 into two copies. The ofﬂine logical volume will be

created using the mirror copy on the physical volumes contain in the physical volume group pvg1.

lvsplit -g pvg1 /dev/vg00/lvol1

Split an online logical volume which is currently mounted on

/usr so that a backup can take place:

lvsplit /dev/vg00/lvol1

fsck /dev/vg00/lvol1b

mount /dev/vg00/lvol1b /usr.backup

Perform a backup operation, then:

umount /usr.backup

lvmerge /dev/vg00/lvol1b /dev/vg00/lvol1

Split two logical volumes at the same time:

lvsplit /dev/vg01/database1 /dev/vg01/database2

Perform operation on split logical volumes, then rejoin them:

lvmerge /dev/vg01/database1b /dev/vg01/database1

lvmerge /dev/vg01/database2b /dev/vg01/database1

WARNINGS

After a two-way mirrored logical volume has been split once, it cannot be split again without merging the

logical volumes using the lvmerge command (see lvmerge(1M)).