Hi guys,
I was wondering if anyone has done some work on saving qemu VM state
(RAM, registers, etc.) on Ceph itself?
The purpose for me would be to enable easy backups of non-cooperating
VMs - i.e. without the need to quiesce file systems, databases, etc.
I'm thinking an automated process which pauses the VM, flushes the Ceph
writeback cache (if any), snapshots the rbd image and saves the VM state
on Ceph as well. I imagine this should only take a very short amount of
time, and then the VM can be unpaused and continue with minimal
interruption.
The new Ceph export command could then be used to store that backup on a
secondary Ceph cluster or on simple storage.
--
Jens Kristian Søgaard, Mermaid Consulting ApS,
jens@xxxxxxxxxxxxxxxxxxxx,
http://www.mermaidconsulting.com/
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