Disk mirroring configuration on HP-UX 11.11

[Viet Q Do]

We have HP9000 rp3440 server running HP-UX 11.11, we also have 2 HP 146GB 15K U320 SCSI disk in which we want to setup disk mirroring for. Please recommend as how we should mirror these two disks to give us the best usage. Any documents you would recommend to use ? How to test after the disk mirroring configuration is done ? Thanks.

[Roopesh Francis_1]

Hi Veit,

how you are planning to mirror. There is no disk to disk mirroring in hp ux.you have to mirror logical volumes.

if you wanted to logical volumes, follow below steps:

1.create a volume group with two disks
2.create logical volumes.
3.mirror logical volumes to second disk using lvextend.
For more info, please refer
http://docs.hp.com/en/B7961-90026/ch03s10.html

there is different procedure for mirroring root vg

Thanks.

[Shan Sunny · Accepted solution]

Hi these documents will help you to mirror boot disks.

http://tuxfitness.com/computer/dokuwiki/doku.php?id=hp-ux:create_a_mirrored_boot_disc-parisc

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=143383

Regards,
Shan

[sen_ux]

Are these non-root disks, or you want to use it as root disk.? However use the normal mirroring procedure.

[Viet Q Do]

Thank you all for a quick reply. Let me try to follow the procedure recommended by Shan and if I have any questions will let you know. Thanks, again.

[R.K. #]

Hi Viet,

You can refer the doc:

http://maben.homeip.net/static/computers/HP/hpux/When Good Disks Go Bad.pdf

Regds..

[Viktor Balogh]

If you have a RAID controller then you can skip the LVM-level mirroring and go ahead with the HW-based RAID 1. Not that LVM mirroring has a large overhead to the system, but i would prefer go this way.

[Michal Kapalka (mikap)]

hi,

i am using simple sh script with the commands :

for example :

source disk : /dev/dsk/c2t0d0
destination disk : /dev/dsk/c2t1d0


simple create sh scrip for example mirror.sh

run the script sh mirror.sh


set -x
pvcreate -B -f /dev/rdsk/c2t1d0
mkboot /dev/rdsk/c2t1d0
mkboot -a "hpux -lq" /dev/rdsk/c2t0d0
mkboot -a "hpux -lq" /dev/rdsk/c2t1d0
vgextend /dev/vg00 /dev/dsk/c2t1d0
lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c2t1d0
lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c2t1d0
lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c2t1d0
lvextend -m 1 /dev/vg00/lvol4 /dev/dsk/c2t1d0
lvextend -m 1 /dev/vg00/lvol5 /dev/dsk/c2t1d0
lvextend -m 1 /dev/vg00/lvol6 /dev/dsk/c2t1d0
lvlnboot -r /dev/vg00/lvol3
lvlnboot -s /dev/vg00/lvol2
lvlnboot -d /dev/vg00/lvol2
lvlnboot -b /dev/vg00/lvol1
lvlnboot -R
lvlnboot -v
setboot -a 0/1/1/0.1.0
setboot


mikap

[Viet Q Do]

Anyone has recommendation on how to obtain LVM Mirror software ? Could I download it from HP web site? Thanks.

[Torsten.]

You need to buy it.

[Viktor Balogh]

https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B2491BA