topic Re: cluster lock disk missing in Operating System - HP-UX

cluster lock disk missing

Frank de Vries — Tue, 26 Apr 2011 13:50:12 GMT

We have a repeatingly message in syslog.
However the disk it is referring too is in /etc/lvmtab and in ioscan.
So for me the disk is not realy missing.

Suppose it went missing in the cluster config ?
When I check with cmquery -C cluster.ascii -c cluster -n node1 -v , I get a ascii file with no specification for LOCK_DISK , is that normal ?

More importantly how to fix this.
Our cluster is hpux 11.11 + MC/SG A.11.15.00
two nodes and two packages.

Thx,

Re: cluster lock disk missing

melvyn burnard — Tue, 26 Apr 2011 18:38:46 GMT

was anything done to the origional cluster lock disk, like replacing it?
It is essentially saying that the disk referrred to in the configuration does NOT have the bit set marking it as a cluster lock disk.
to fix this, halt the cluster, vgchange -c n the cluster lock vg, vgchange -a y the cluster lock vg, then use cmapplyconf to write the bit to the disk, vgchange -a n again, and then restart the cluster, that should fix it.
Also, you are running a version of Serviceguard that is out of support.

Re: cluster lock disk missing

likid0 — Wed, 27 Apr 2011 06:00:28 GMT

With that version of SG you need to stop SG, apply the config and start SG again

Re: cluster lock disk missing

Frank de Vries — Wed, 27 Apr 2011 07:53:49 GMT

There was no disk replacement as such.
There was a move (as is) of the San attached storage cabinet from one room to another.
Can't see how that is a change, but there you go.

I told customer it is out or support, but they do not want to do anything about it, my brief is clear: only keeping the lights on, i.e. only firefighing when there is a fire.
And sometimes that sucks.

After the vgchange, do I need to generate a new ascii file with cmquerycl or just use the existing one that is lying around with cmapplyconf.
thx

Re: cluster lock disk missing

Vivek_Pendse — Wed, 27 Apr 2011 09:06:12 GMT

No need to re-create the ascii file again with cmquerycl. You can make changes in existing ascii files & can reapply it with cmcheckconf & cmapplyconf.
If, the configuration is correct in ascii file, then it is just the job of 15 to 20 mins only.
You need to disable the cluster aware of cluster lock disk & just activate on any node.

Thanks,
Vivek

Re: cluster lock disk missing

Bob_Vance — Wed, 27 Apr 2011 15:07:06 GMT

Do you have the ASCII file that was used to create the cluster?
What does it have for
CLUSTER_LOCK_VG
& CLUSTER_LOCK_PV
?
What does a
cmviewcl -v
show for the lock information?

Does the PV match what you're getting in the syslog?
Does a diskinfo on the raw device name work?

Is the VG containing the lock disk(s) active?
(that's not a requirement for SG -- you can have a separate VG for the lock disks and have it inactive.
)
If not, try to activate it:
vgchange -a e vgname
.
Does vgdisplay -v on the VG show the correct PV(s).

(if the VG was inactive, then, when done, de-activate it again with
vgchange -a n
)

bv