topic Re: how to umount the vg in Operating System - HP-UX

how to umount the vg

rajesh73 — Fri, 18 Feb 2011 04:33:16 GMT

$strings lvmtab
/dev/vg00
/dev/dsk/c2t1d0
/dev/vg01
/dev/dsk/c5t0d1
/dev/dsk/c7t0d1
/dev/vg02
/dev/dsk/c5t0d2
$ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
==========================================================================
disk 0 0/0/2/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-C
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 73.4GMAU3073NC
/dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
disk 2 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 73.4GMAU3073NC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
disk 3 0/6/1/0.2.0.0.0.0.1 sdisk CLAIMED DEVICE COMPAQ HSV110 (C)COMPAQ
/dev/dsk/c5t0d1 /dev/rdsk/c5t0d1
disk 5 0/6/1/0.2.0.0.0.0.2 sdisk NO_HW DEVICE COMPAQ HSV110 (C)COMPAQ
/dev/dsk/c5t0d2 /dev/rdsk/c5t0d2
disk 4 0/6/1/0.2.1.0.0.0.1 sdisk CLAIMED DEVICE COMPAQ HSV110 (C)COMPAQ
/dev/dsk/c7t0d1 /dev/rdsk/c7t0d1
disk 6 0/6/1/0.2.1.0.0.0.2 sdisk NO_HW DEVICE COMPAQ HSV110 (C)COMPAQ
/dev/dsk/c7t0d2 /dev/rdsk/c7t0d2
$bdf
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 212992 118128 94192 56% /
/dev/vg00/lvol1 298928 75800 193232 28% /stand
/dev/vg00/lvol8 4718592 2962576 1742344 63% /var
/dev/vg00/lvol7 4718592 1129848 3560792 24% /usr
/dev/vg00/lvol4 1048576 472824 572104 45% /tmp
/dev/vg00/oralv 8388608 2876293 5175180 36% /oracle
/dev/vg00/lvol6 5636096 1866224 3740464 33% /opt
/dev/vg00/lvol5 32768 15968 16720 49% /home
/dev/vg01/lvol3 20971520 3472 20640432 0% /cddump

question:

the above example lvmtab output shows vg02.how to remove the vg02.

vgdisplay command also display vg02.but vg02 currently not used.

kindly help how to umount this drive.

Re: how to umount the vg

Patrick Wallek — Fri, 18 Feb 2011 04:45:35 GMT

The easiest way:

vgexport /dev/vg02

Re: how to umount the vg

Patrick Wallek — Fri, 18 Feb 2011 04:46:34 GMT

I typed a submitted too quickly:

You should probably make sure the VG is not active.

Deactivate VG:

vgchange -a n vg02

Remove VG:

vgexport vg02

Re: how to umount the vg

nijokj — Fri, 18 Feb 2011 05:05:05 GMT

Incase you want to keep the vg's configuration for future use first make a map file using this command.

vgexport -p -s -m /tmp/vg02.map /dev/vg02

after that deactivate vg

vgchange -a n /dev/vg02

and export it

vgexport /dev/vg02

Re: how to umount the vg

rajesh73 — Fri, 18 Feb 2011 05:43:35 GMT

previously this vg02 is used.
i have one doubt this mount directly deleted from storage but i thing server side vgexport not done.

kindly find the below procedure correct or not

1.vgchange -a n /dev/vg02

2.vgexport /dev/vg02

kindly advice this is correct or not.

Re: how to umount the vg

Ismail Azad — Fri, 18 Feb 2011 06:36:23 GMT

Hi,

Yes this is the right procedure. You say that vg02 is not currently used and hence I would think you don't have a mounted filesystem. In case there is one mounted filesystem on an L.V in that V.G, you will have to fire a umount // and then as you mentioned. In case it is "not in use at all", the steps are right.

Regards
Ismail Azad