Hi,

        I am working through the process of building my first GFS installation and cluster. So far, things are going well. I have shared SAN disk that is visible to both nodes, I've got the basic cluster up and I am now starting to create my LVM structure.

I spent a lot of time trying to determine why I was seeing errors similar to the following when trying to create LVs in a new VG:

root# lvcreate -L 50M /dev/vgtest
  Rounding up size to full physical extent 52.00 MB
  Error locking on node cpafisxb: Volume group for uuid not found: IC070PzNGG68uEesi33dH902E4GeGEvwcAccZY4AdnJRkPHUL7EYJzL0Xxkg3eqV

  Error locking on node cpafisxa: Volume group for uuid not found: IC070PzNGG68uEesi33dH902E4GeGEvwcAccZY4AdnJRkPHUL7EYJzL0Xxkg3eqV

  Failed to activate new LV.

I noticed that I did not have a /dev/vgtest on the node where I created the VG. I discovered (by googling the error message above) that another person had seen a similar problem and resolved it by restarting the clvmd service. I did the same thing and the problem was resolved - I don't see that error when creating LVs in that VG, and I now have a /dev/vgtest and associated files (only on the node I created it on).

Now, I created a new VG, try to create a new LV within it and see the same error! I see in the clvmd man page that there is a "-R" option, which sounds like maybe what should be done instead of restarting clvmd. Tried it, but no luck - same error and no /dev/ directory created. Restart clvmd, instant fix.

So - what am I doing wrong here? I can't imagine I am supposed to restart clvmd every time I create a new VG, am I?

Additionally, I can see the clustered VGs and LVs on my other node, but there are not any files in /dev for the clustered VGs - is this normal? I have also restarted clvmd there with no effect.

Thanks,

Kevin

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