I apologize if this has been covered already or is written up elsewhere but I can't seem to find it. I've got a couple of AoE volumes that I'm using for LVM VGs. They have GFS filesystems on LVs that are sized to fill 90% of the the VGs; 10% space left over for snapshots. I have 4 CENTOS 5.2 machines clustered and mounting the GFS filesystems. That's working well. Having used LVM snapshots in non-cluster environments before, I figured I'd just use the same logic for backing up the volumes; lvcreate -s, mount, backup, umount, lvremove. This quickly fell apart and I started to think about it more. I ended up wondering how snapshots of the volume could ever really work without coordinating with the other nodes. My question is this. Should I be able to use snapshots on clustered volumes like this? If not, are there plans to support it later? If so, can someone point me to a working example? Thanks in advance, Paul -- Paul Dugas - paul@dugas.cc - 404.932.1355
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