Id like to look at a read-only copy of running virtual machines for compliance and potentially malware checks that the VMs are unaware of.
the first note on http://ceph.com/docs/master/rbd/rbd-snapshot/ warns that the filesystem has to be in a consistent state. does that just mean you might get a "crashed" filesystem or will some other bad thing happen if you snapshot a running filesystem that hasned synced? would telling the os to sync just before help?
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