vg00 lv recovery

[scoooot]

I am going to try and give as much information as I can here. Forgive me if I've left anything out. I've also done some looking around in ITRC without being able to resolve my issue.

I have a 11.23 v2 ia64 hp server rx5670 and had 4 x 36GB internal root drives. It was LVM mirroring with 2 in each of 2 mirror sets.

One of the root drives failed and it turned out the LIF info wasn't on the mirror and I booted the recovery DVD and was able to get the machine up and running on the secondary mirror set. This was after I unplugged both the disk in the primary set.

So now the machine is up and running, without any issues. Except now I wanted to clean up the root VG of the 2 missing drives.

This is not a cluster.

I have run a few commands here to show output and hopefully paint a picture and perhaps someone knows how I can get these root disk back into the lvmtab. This system is currently up and running just fine. I don't have an ignite tape so that's not an option.

I did a #vgreduce -f /dev/vg00 which seemed to work except it didn't.

I rename my /etc/lvmtab and did a vgscan -v

#vgscan -v
vgscan: has no correspoding valid raw device file under /dev/rdsk.
Verification of unique LVM disk id on each disk in the volume group
/dev/vg00 failed.

#vgdisplay -v vg00
vgdisplay: Volume group "/dev/vg00" does not exist in the "/etc/lvmtab" file.
vgdisplay: Cannot display volume group "vg00".

#ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
==========================================================================
disk 0 0/0/2/0.0.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 2 0/0/2/0.2.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c0t2d0 /dev/dsk/c0t2d0s2 /dev/rdsk/c0t2d0 /dev/rdsk/c0t2d0s2
/dev/dsk/c0t2d0s1 /dev/dsk/c0t2d0s3 /dev/rdsk/c0t2d0s1 /dev/rdsk/c0t2d0s3

#ll /dev/rdsk
total 0
crw-r--r-- 1 bin sys 188 0x000000 Apr 7 09:02 c0t0d0
crw-r--r-- 1 bin sys 188 0x002000 Apr 13 2008 c0t2d0
crw-r--r-- 1 bin sys 188 0x002001 Sep 14 2006 c0t2d0s1
crw-r--r-- 1 bin sys 188 0x002002 Nov 9 2007 c0t2d0s2
crw-r--r-- 1 bin sys 188 0x002003 Sep 14 2006 c0t2d0s3
crw-r--r-- 1 bin sys 188 0x013000 Sep 14 2006 c1t3d0
crw-r--r-- 1 bin sys 188 0x032000 Sep 14 2006 c3t2d0
crw-r--r-- 1 bin sys 188 0x032001 Sep 14 2006 c3t2d0s1
crw-r--r-- 1 bin sys 188 0x032002 Nov 9 2007 c3t2d0s2
crw-r--r-- 1 bin sys 188 0x032003 Sep 14 2006 c3t2d0s3


#dd if=/dev/rdsk/c0t2d0 of=/dev/null bs=64k count=1000
1000+0 records in
1000+0 records out

#dd if=/dev/rdsk/c0t2d0s1 of=/dev/null bs=64k count=1000
1000+0 records in
1000+0 records out

[Steven E. Protter]

Shalom,

Great information. I can not find the question.

rx5670.

Good box. Does it have a P400 hardware raid card?

If so, I would use that to maintain the mirror,not mirror/ux

If it doesn't have a hardware raid card, I'd invest in one.

SEP

[scoooot]

#vgscan -v
vgscan: has no correspoding valid raw device file under /dev/rdsk.
Verification of unique LVM disk id on each disk in the volume group
/dev/vg00 failed.

[Torsten. · Accepted solution]

>> "rx5670.

Good box. Does it have a P400 hardware raid card?"


No, not possible. This good box does not have any PCIe slots.


@scoooot:

Do you want to replace the failed disk?

What does "vgdisplay -v vg00" says?

Consider to bring lvmtab back in place first.

[scoooot]

#vgdisplay -v vg00
vgdisplay: Volume group "/dev/vg00" does not exist in the "/etc/lvmtab" file.
vgdisplay: Cannot display volume group "vg00".

[Torsten.]

Do you want to replace the failed disk or continue unmirrored?

Bring lvmtab back in place first.

[scoooot]

Sorry Torston, yes I do want to ultimatly replace the mirror set of 2 disks but thought it would be a good idea to get this back to a solid state on the current ones and then mirror them to new ones.

Or should I even bother and just go with replacing the failed mirror disk and going about it that way?

[Torsten.]

I'm not exactly sure what the current situation is, but I would consider to replace the disk.

If your lvmtab is still valid - why trying a vgscan?

[Jeff Schussele]

I think your lvmtab file is bazook.
Remove..it..rename..it...just rerun...FOR SURE.

Then let's see what happens...
MY $0.02,
Jeff

[scoooot]

lvmtab is toast. I did a rename. I did a rescan and you can see from the output above the vgscan -v.