Hi All, Is there a way to take a live memory snapshot of a running VM without freezing or stopping this VM?
I explored the Qemu code and documentation and I found two ways to take a snapshot: 1-Using "savevm" Qemu monitor command, which freezes the VM for tens of seconds 2-Using "migrate" and select the destination as a file, which forces the machine to stop after the snapshot is saved. In production environments (where delaying the operations of a VM is very critical), it is always useful to take memory snapshots to do system analysis or forensics. I think Qemu should provide a way to take a snapshot based on QOW technque of memory pages (same as the QCOW disk snapshoting). If such technique does not exist, I am willing it devlop it myself, but I wonder if the Qemu community will be interested to add my patch to future versions. Ahmed
