topic Re: Mirror disk path changed in Operating System - HP-UX

Mirror disk path changed

Prasanth V Aravind — Thu, 24 Feb 2011 06:24:03 GMT

Hi All,

One of our server have internal boot disk , which was mirrored with a lun from XP san storage. There was some activities done on SAN storage.

After this activity, the device path of mirrored Xp lun got changed & mirroring got broken. I can see the mirrored disk in ioscan output & vgdisplay vg00 shows error saying that mirror disk not present. Now i am not able to unmirror this disk & mirror it back with newer device path.

Is it possible or restore from ignite only way to rollback ???

THanks in advance
prasanth

Re: Mirror disk path changed

Shibin_2 — Thu, 24 Feb 2011 06:28:46 GMT

What is your OS version ?

Re: Mirror disk path changed

Torsten. — Thu, 24 Feb 2011 06:33:58 GMT

"something changed" - I assume related to the path, so you got new device files.

Consider to unmirror the disk, remove it from the VG, then create the mirror again with the new device path.

Re: Mirror disk path changed

nijokj — Thu, 24 Feb 2011 06:54:04 GMT

One way,
due to physical volume unavailabe you need pvkey to reduce the mirror
lvreduce it using pvkey
lvdisplay -v -k lvol wil give you the pvkey.
lvreduce -m 0 -k lvol
after do it for all lvs.
Reduce the mirror
vgreduce -f vgname
after that follow the normal root mirroring procedure.

Re: Mirror disk path changed

Prasanth V Aravind — Thu, 24 Feb 2011 13:13:06 GMT

Shibin, The os version is hpux 11.23.

nijokj, let me try the way you given to reduce the PV & i will update the results on this forum.