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vgchange -c

 
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vgchange -c

Hi all
Can I assign/unassign volume groups from the cluster if the cluster is down, or does the cluster have to be up in order to do this?
5 REPLIES 5
Mark Grant
Honored Contributor
Solution

Re: vgchange -c

The cluster can be up or down, doesn't matter.
Never preceed any demonstration with anything more predictive than "watch this"
Geoff Wild
Honored Contributor

Re: vgchange -c

Yes you can - either up or down....

We do backups with the cluster up - but vgchange -c n vg's on the cluster boxes, and vgchange - a y on on the backup server and mount file systems locally on the backup server.

Rgds...Geoff
Proverbs 3:5,6 Trust in the Lord with all your heart and lean not on your own understanding; in all your ways acknowledge him, and he will make all your paths straight.
A. Clay Stephenson
Acclaimed Contributor

Re: vgchange -c

And the other important point is that you only need to doi the vgchange -c on only one host in the cluster. Because the data is carried onm the VG disks themselves (as opposed to externally on the hosts), a change anywhere does it for all.
If it ain't broke, I can fix that.
Jeff Schussele
Honored Contributor

Re: vgchange -c

Hi,

And don't forget the vgchange -c y before you attempt to have the pkg reactivate the VG. If you forget, the activation will fail.

Rgds,
Jeff
PERSEVERANCE -- Remember, whatever does not kill you only makes you stronger!

Re: vgchange -c

Thanks everyone.