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тАО08-24-2004 10:15 PM
тАО08-24-2004 10:15 PM
We have the following situation:
We online added a node to a cluster. This works fine, but when we halt packages on the old node and start the package the start fails ( On same node/ new node):
vgchange: Activation mode requested for the volume group "/dev/vgq1200" conflict
s with configured mode.
ERROR: Function activate_volume_group
ERROR: Failed to activate vgq1200
A simple vgchange -c y on the volumegroup and the package starts again.
I can not find any comment on this in documentation. I guess this is coused by the new clusterid generated by the cmapplyconf but i am not sure. We tested this on two different clusters, on one we did the applyconf on the new node and on on a exsisting node. Both have the same results.
Is this normal behavour?
Regards,
Gideon
Solved! Go to Solution.
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тАО08-24-2004 10:36 PM
тАО08-24-2004 10:36 PM
SolutionIf not, I seem to recall that this will clear the cluster aware flag for an VG's not listed.
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тАО08-24-2004 10:46 PM
тАО08-24-2004 10:46 PM
Re: Add a node online, new cluster id vgconfig?
I wasn't aware that VG's not mentioned had the setting cleared but this is logical.
Regards,
John
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тАО08-24-2004 10:48 PM
тАО08-24-2004 10:48 PM
Re: Add a node online, new cluster id vgconfig?
HTH,
Massimo
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тАО08-24-2004 11:07 PM
тАО08-24-2004 11:07 PM
Re: Add a node online, new cluster id vgconfig?
The volume group was not listed in the cluster ascii file.
But the packages were running, so the volume groups were cluster aware and the volume groups were active. The vgchange -c y command can not be issued on an active volumegroup ( by command line, may be cmcld can).
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тАО08-25-2004 12:11 AM
тАО08-25-2004 12:11 AM
Re: Add a node online, new cluster id vgconfig?
BUT...you can add packages to a cluster and start them up. Sounds a bit confusing, but you can do this. That's how you seem to be running. I do this when I have to get a package going while things are up. You must however, remember to go back and take things down and do the 'rest of the job'.
My point is this - your cluster ascii file has to have all the vg listed in it (and be cmapplyconf'd) for your cluster to be 'completely aware' of all that is in it. As folks have mentioned already. That is how it controls the release and activation of the vg's. All too often we think the package control script is the one that controls everything on the vg's. But that cluster ascii file does it's part here too.
So you should be able to move things around and vgchange -a n then vgchange -c y manually to test your pkg. But to have the 'Cluster' handle it you will need to add the vg's to the cluster ascii and do your cmapplyconf (with the cluster down !).
HTH,
Rita
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тАО08-25-2004 01:27 AM
тАО08-25-2004 01:27 AM
Re: Add a node online, new cluster id vgconfig?
Elmar and I did some testing on a test-cluster.
Indead after adding the VG in the cmclconf.ascii and apply this one the VG's are updated automtically after a cluster config change.
By the way, adding volumegroups to the cluster ascii file CAN be done while the cluster is running.(with the apply).(so we need to update workinstructions)
This seems not very well documented, because also the ServiceGuard course material is not talking about that you need to add the VG in the cluster ascii.(in the part that tells how to add a VG to a package)
I think this clear's it up.
Peter