I'm wondering if the following is possible. I have OpenStack (Folsom) configured to boot VMs from volume using Ceph as a backend for Cinder and Glance. My setup pretty much follows the Ceph guides for this verbatim. I've been using this setup for a while now, and it's all been really smooth.
However, I if I try do a live-migration, I get this:
RemoteError: Remote error: RemoteError Remote error: InvalidSharedStorage_Remote vmhost3 is not on shared storage: Live migration can not be used without shared storage.
One thing I am doing that may not be normal is that I am trying to do the "true" live migration in KVM/libvirt, having set this in my nova.conf:
live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE
Anyone know if this setup should work? Or if there is something I should tweak to make it work? I was thinking that having the RBD available via librbd at both the source and destination host makes that storage shared storage. Perhaps not if I am trying to do live migration? If I do OpenStack's normal "live" migration, it will pause the VM and move it, which is less than ideal, but workable.
Thanks,
- Travis
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