Operating System - OpenVMS
1748080 Members
5031 Online
108758 Solutions
New Discussion юеВ

Re: Need help with VMS Cluster ... Memory Dump

 
PDP-Fan
Valued Contributor

Need help with VMS Cluster ... Memory Dump

Hi there

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"
15 REPLIES 15
marsh_1
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

christian ,

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 ?

Volker Halle
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

Christian,

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.
labadie_1
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

Do you get this message

exit %X7280B4
%MOUNT-F-VOLALRMNT, another volume of same label already mounted

Jan van den Ende
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

Christian,

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
Don't rust yours pelled jacker to fine doll missed aches.
PDP-Fan
Valued Contributor

Re: Need help with VMS Cluster ... Memory Dump

I had the same label on both system disks but I already changed one and it did not help. But to be sure, I will reinstall the system with a different label from the beginning.

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"
PDP-Fan
Valued Contributor

Re: Need help with VMS Cluster ... Memory Dump

The error status is 0072832C
***********************************************
"If it seems illogical... you just don't have enough information"
Volker Halle
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

Christian,

%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.
Volker Halle
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

Christian,

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.
Hoff
Honored Contributor

Re: Need help with VMS Cluster ... Memory Dump

> On OpenVMS, if something doesn't work, you normally do NOT re-install the system ;-(

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