I got a Ubuntu (hardy) system used for virtualization using KVM. Each guest got it's own qcow2 file used as disk. Guests are running Ubuntu (hardy). What would a good backup strategy be for such a setup? I would prefer not to shutdown the guests during backup.
Ubuntu – Backup of KVM guests when using qcow2 disk files
backupkvm-virtualizationqcow2Ubuntuvirtualization
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Best Answer
You'll want to coordinate that within the guest .. ideally you:
Then just make a qcow2 snapshot of the guest. You then have a read-only immutable copy of the guest FS as it was when you took the snapshot.
This page offers a lot more information than you probably wanted to know on how snapshots (and qcow2 itself) works. See also the accepted answer to this question.