topic Re: Quorum not present in Operating System - HP-UX

Quorum not present

Stephanie L Davenport — Thu, 30 Nov 2006 15:39:00 GMT

I am setting up a new machine and having issues with the disk drives.

This is HP-UX 10.01 running on a k420 and am using an ignite image from a k400. I have two mod20s hooked up to the system with 4 paths (each one going to 10 disks). exp... path 1 is going to A on Mod20#1.

I load the OS and configure the disks. But, when I reboot, I get the following error message:

vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c8t6d0":
Cross-device link
vgchange: Couldn't activate volume group "/dev/vg02":
Quorum not present, or some physical volume(s) are missing.

vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c6t5d0":
Cross-device link
vgchange: Couldn't activate volume group "/dev/vg05":
Quorum not present, or some physical volume(s) are missing.

When I log into sam, it shows that the disk devices I loaded those volume groups on are "unused". So, I try to re-add and it tells me that "The physical volume "/dev/dsk/c8t6d0" is already recorded in the "/etc/lvmtab" file. So, I try to move the lvmtab file to "old" and do a vgscan -a. At that point, I lose all the drives (except the two internal ones).

The disk devices show up as:

10/16/12.6.0
10/16/12.6.1
10/16/4.5.0
10/16/4.5.1
10/4/12.5.0
10/4/12.5.1
10/4/4.6.0
10/4/4.6.1

So, what I am I doing wrong? And, what disk devices am I supposed to be using in order to get to all the disks?

Re: Quorum not present

James R. Ferguson — Thu, 30 Nov 2006 15:50:42 GMT

Hi Stephanie:

Did you 'vgimport' the non-vg00 volume groups?

Regards!

...JRF...

Re: Quorum not present

Stephanie L Davenport — Thu, 30 Nov 2006 16:13:51 GMT

I've been using sam to create the volume groups and then lvcreate from the command line to create the lvols (most of them raw for informix). I can get through all of that and I can restore data to the disks. But, after I reboot, 1/2 of them are gone. :(

Re: Quorum not present

Steven E. Protter — Thu, 30 Nov 2006 16:17:26 GMT

Shalom,

The disk layout of the target machine was obviously different than the disk strcuture of the source.

You will need to build new volume groups and restore the actual data from a secondary backup.

SEP

Re: Quorum not present

Stephanie L Davenport — Thu, 30 Nov 2006 16:21:35 GMT

I am completely rebuilding the volume groups from scratch. The only thing that is the same is vg00.

I work on it for 2 hours rebuilding each volume group and then the logical volumes. It works fine. I use fbackup and ontape to restore all the data.

At that point, if I reboot the machine, I lose 1/2 the volume groups. That is the part I don't understand. Why does it say "Quorum not present, or some physical volume(s) are missing."?

Re: Quorum not present

Michael Steele_2 — Thu, 30 Nov 2006 16:22:22 GMT

Hi Stephanie:

Can you paste in your lvmtab and map files?
# strings /etc/lvmtab

-and-

# vgcfgrestore -l -f /etc/lvmconf/vg.....conf

-also-

# ioscan -funC disk (* any NO_HW ? *)

ServiceGuard?

And finally, you can activate a volume group without quorum.

# vgchange -a y -q n /dev/vg....

also check your syslog.log and OLDsyslog.log.

Re: Quorum not present

Michael Steele_2 — Fri, 01 Dec 2006 14:44:23 GMT

Dear Stephanie:

This can only be in your LVM procedure. If you paste it in I review it.

Re: Quorum not present

Stephanie L Davenport — Tue, 09 Jan 2007 11:51:35 GMT

This has something to do with the dual-paths to the disks. I kept playing with which disks to use until it was stable. Still can't explain it.

Thanks to all of you for your help,

Steph