failed mirrored disk in VG00

[Mark Harshman_1]

OK, i have an L2000 running HPUX11i. I have a 2 disk mirrored vg00, with one of the disk gone bad. the lv's are showing stale. My vgdisplay now only shows one disk defined to the volume group, however. My lvmtab still shows both for the vg00. I pulled the bad disk and re-inserted, and now i can do a diskinfo on it. I was hoping to get it to work long enough to drop but no luck so far. I've tried vgcfgrestore, vgsync, vgreduce, lvreduce....nothing is working. Any other ideas? i'd prefer not to have to reboot at this time if possible.
thanks alot.

[Pete Randall]

Mark,

You need to replace the bad disk, then run vgcfgrestore, mkboot, and vgsync.


Pete

[Mark Harshman_1]

ok i did the vgcfgrestore, and the mkboot, and the vgsync but still no good. the disk has not been added back to the VG. I get an error on the vgsync that it cannot synce the first lv. any other ideas?

[Torsten. · Accepted solution]

All you need is here:

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

You have to do the correct steps in a correct order. After restoring the information (vgcfgrestore) you have to re-activate the vg (vgchange -a y vg00). I assume your system is not able to activate the PV yet (pvchange -a y ...). Now check with vgdisplay -v vg00. This will display both disks. Now you are able to do the other commands (mkboot, vgsync) - good luck!

[Tiziano Contorno _]

You said "bad" disk is no more part of vg00.

You may try to "restore" vg00 manually:

pvcreate -fB the "bad" disk
vgextend vg00 with the "bad" disc
mkboot bad disk
mkboot -a "hpux -lq" bad disk
lvextend -m 1 each lvol in the right order
lvlnboot -R /dev/vg00

I had a failed disk that could be read by dd and could be queried by diskinfo...

Regards.

[Torsten.]

Don't do a "pvcreate" - you will have more trouble.

The disk will disappear from the vgdisplay after a reboot - this is normal.

[Mark Harshman_1]

Tortsen had my missing step. the vgchange after the vgcfgrestore fixed my ticket. thanks to all.