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тАО11-28-2008 02:25 AM
тАО11-28-2008 02:25 AM
Need help with VMS Cluster ... Memory Dump
I have one Alpha ES45 and one ES40 connected through MemoryChannel, directly without a hub. I installed OpenVMS 7.3 on both machines (new installation). Everything works fine until the cluster is activated by Cluster_Config. After the reboot one system starts up and the later one (no matter which one) starts and crashes with a memory dump. This occurrs after joining the cluster.... starting disk serving... error mounting system device.... reset and dump.
I have not defined a quorum disk and there is no shared storage attached. Just the two systems with one disk each and the MC connection.
I think this should work ...?
I have not much experience with Alpha clusters but I set up some VAX clusters some years ago and this was never a problem.
Maybe I have to disable disk serving?
Christian
"If it seems illogical... you just don't have enough information"
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тАО11-28-2008 02:44 AM
тАО11-28-2008 02:44 AM
Re: Need help with VMS Cluster ... Memory Dump
can't remember the commands now at the >>> prompt, but each of the memory channel devices will default to mc0
if memory serves , have you changed one to be mc1 or above ?
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тАО11-28-2008 02:56 AM
тАО11-28-2008 02:56 AM
Re: Need help with VMS Cluster ... Memory Dump
you are using 2 separate system disks, right ? Did you make the volume labels unique in the cluster or do both system disks have the SAME volume label ? That would explain a PROCGONE crash. early during boot of the 2nd node.
What kind of crash are you seeing ? Just provide the bugcheck message from the console output first.
Volker.
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тАО11-28-2008 03:18 AM
тАО11-28-2008 03:18 AM
Re: Need help with VMS Cluster ... Memory Dump
exit %X7280B4
%MOUNT-F-VOLALRMNT, another volume of same label already mounted
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тАО11-28-2008 04:23 AM
тАО11-28-2008 04:23 AM
Re: Need help with VMS Cluster ... Memory Dump
I think Voler and Gerard (Labadie) hit the right issue.
You wrote
>>>
I installed OpenVMS 7.3 on both machines (new installation).
<<<
In that case, without special extra action, both system disks will have the same label.
Which can not be in a cluster...
After the first node is up, do
$ SET VOLUME SYS$SYSDEVICE/LABEL=
Then REBOOT that node, and boot the cluster.
I would expect that (at least THIS) problem will not show again.
hth
Proost.
Have one on me.
jpe
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тАО11-28-2008 08:09 AM
тАО11-28-2008 08:09 AM
Re: Need help with VMS Cluster ... Memory Dump
regarding licenses... I really don't know, do Alpha-VMS cluster licenses exist or are they integrated to the VMS system license?
"If it seems illogical... you just don't have enough information"
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тАО11-28-2008 08:11 AM
тАО11-28-2008 08:11 AM
Re: Need help with VMS Cluster ... Memory Dump
"If it seems illogical... you just don't have enough information"
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тАО11-28-2008 08:21 AM
тАО11-28-2008 08:21 AM
Re: Need help with VMS Cluster ... Memory Dump
%MOUNT-F-DIFVOLMNT, different volume already mounted on this device
Did you use the same disk allocation class (ALLOCLASS) on both systems ? And installed OpenVMS on the same disk (DKAx00) on both Alphas ? Then OpenVMS will complain, that another volume is already mounted on the same device name. Just make sure to use different values of ALLOCLASS on both systems.
On OpenVMS, if something doesn't work, you normally do NOT re-install the system ;-(
Volker.
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тАО11-28-2008 08:24 AM
тАО11-28-2008 08:24 AM
Re: Need help with VMS Cluster ... Memory Dump
and yes, VMSCLUSTER licenses do exist and need to be installed. But missing licenses do not cause crashes during boot. You will only be able to login on the console without a valid license.
Volker.
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тАО11-28-2008 08:46 AM
тАО11-28-2008 08:46 AM
Re: Need help with VMS Cluster ... Memory Dump
In general, Volker is correct with this assertion.
That written and unfortunately, this particular clustering environment is one of the few areas where you CAN end up with a need to re-install.
Mess up with the VOTES and EXPECTED_VOTES values or with device allocation classes and such within a cluster environment and particularly within a shared-storage cluster and you can see your disks clobbered. And you CAN end up reinstalling or reloading from your archives.
http://64.223.189.234/node/569
http://64.223.189.234/node/153
I'd strongly encourage a trip through the clustering manuals in the HP documentation set here, as -- if you mess up -- bad things can happen to your data.
Here are the shared files:
http://64.223.189.234/node/169