Shared FC LVM VG with LVs for each KVM VM. Clvm required?

Posted by Cocoabean on Server Fault See other posts from Server Fault or by Cocoabean
Published on 2012-10-17T16:38:50Z Indexed on 2012/10/17 17:04 UTC
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kvm-virtualization

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lvm

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cluster

I have 2 virtual machine hosts running Ubuntu 12.04 and KVM managed with libvirt. They are both connected to the same VG which is a LUN on my SAN over FC. I provision LVs on this shared VG for each VM. I don't think I need HA or failover, but I do want live migration between the hosts. Do I need clvm in this case? As long as I don't try to start the same VM on each host should this work? Clvm requires lots of overhead with clustering tools that I don't think I need. I can deal with manually restarting VMs on other hosts in the event of a hardware failure.

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