At 09:40 AM 4/13/2006, you wrote:
If you don't use GFS, just make absolutely sure that there is no way that two nodes could mount the same lv. As far as I know, there is nothing in the cluster that will prevent an ext3 or xfs filesystem from being mounted by multiple nodes. And if it happens, you have almost guaranteed data corruption.
The thing with Xen is, if you use GFS on the dom0 then you'll be using loopback filesystems for the domUs, so data corruption could still happen. xfs has protection against being mounted twice, you may want to consider using xfs if you're concerned about a domU being run from two different dom0's causing data corruption on the fs. I'm not aware of any other fs that provides this feature.
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