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тАО01-05-2005 01:19 AM
тАО01-05-2005 01:19 AM
Missing cluster lock
We've been having problems over the last few days with our Oracle app running on a Service Guard cluster over two RP8400's. I'm getting quite a lot of error messages in syslog.log, but the main gist seems to be the following:
Jan 5 13:19:45 gcwsdb01 cmcld: WARNING: Cluster lock on disk /dev/dsk/c5t13d5 is missing!
Jan 5 13:19:45 gcwsdb01 cmcld: Until it is fixed, a single failure could cause all nodes in the cluster to crash
Not (yet) trained in the mysterious arts of ServiceGuard, can anyone point me in the right direction?
Thanks.
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тАО01-05-2005 01:34 AM
тАО01-05-2005 01:34 AM
Re: Missing cluster lock
The system will check for this disc every 60 minutes so you are probably seeing this message every 60 minutes.
Does the other node have the same message in syslog? if so, the disc has a problem, if not then you may have lost a link to the PV from this node.
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тАО01-05-2005 01:36 AM
тАО01-05-2005 01:36 AM
Re: Missing cluster lock
You can generate a new ascii file - and it will tell you what the cluster lock should be:
cmquerycl -v -C /etc/cmcluster/new.ascii -n node1 -n node2
where node1 and 2 are the server names of the nodes in your cluster.
Look at the file for:
FIRST_CLUSTER_LOCK_VG
and
FIRST_CLUSTER_LOCK_PV
You will then need to add to you existing ascii file...or just use the new one (edit it first! - set: CLUSTER_NAME
as well as add your vg's to the end:
Example:
VOLUME_GROUP /dev/vg50
VOLUME_GROUP /dev/vg51
VOLUME_GROUP /dev/vg55
VOLUME_GROUP /dev/vg56
VOLUME_GROUP /dev/vg57
VOLUME_GROUP /dev/vg52
Read Managing MC/SG for your version:
http://docs.hp.com/en/ha.html#ServiceGuard
Rgds...Geoff
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тАО01-05-2005 01:47 AM
тАО01-05-2005 01:47 AM
Re: Missing cluster lock
MC/ServiceGuard NFS Toolkit A.11.11.0.2
ServiceGuard OPS Edition Bundle A.11.14
HP Cluster Object Manager B.01.04
ServiceGuard Manager A.02.00
Cheers.
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тАО01-06-2005 12:32 AM
тАО01-06-2005 12:32 AM
Re: Missing cluster lock
ftp://contrib:9unsupp8@hprc.external.hp.com/crash
Place it on the affected server(s) and unpack it:
# sh cminit.tar.shar
Two files will unpack; an executable (cminitlock) and a README.
Read README for an explanation on how to use the command to either view the cluster lock status or restore the cluster lock structures to the disk WHILE THE CLUSTER IS RUNNING.
If this doesn't solve the problem (wait up to 60 minutes and inspect syslog.log to see if the WARNING message has no printed) - then perhaps the disk is not functioning properly or it is not supported as a cluster lock disk... or some other random thing.
-SD
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тАО07-10-2012 03:00 AM
тАО07-10-2012 03:00 AM
Re: Missing cluster lock
The FTP site idenitifed above requires a username/password. Anyone know what it is?
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тАО07-10-2012 03:12 AM
тАО07-10-2012 03:12 AM
Re: Missing cluster lock
>The FTP site identified above requires a username/password.
You'll probably need to contact the Response Center. That site may not even have that tool anymore, since this post is so old.