[CentOS-virt] Shared Storage Options
brett at worth.id.au
Thu Aug 21 10:21:54 UTC 2008
I would like to canvas some opinions on options for shared storage in a Xen cluster. So
far I've experimented with using iSCSI and clvm which mixed success.
The primary concern I have with both of these options is that there seems to be no obvious
way to ensure exclusive access to the LUN/device to the VM I want to run. On a couple of
occasions during my playing I've accidentally started the same VM on two servers and
corrupted the said filesystem.
I've tried setting up GFS but I don't think I'm smart enough to do that. The fencing has
me baffled. In fact fencing had me baffled with clvm but I somehow managed to trick it
into working though probably not how it's supposed to.
I'd be happy to persist with either of the above methods if I could work out how to lock
the device. Can anyone offer some advice?
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