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Description of problem: Start guest with snapshot=on mode, find previous internal snapshot disappear when check using "(qemu) info snapshot". Version-Release number of selected component (if applicable): qemu-kvm-0.12.1.2-2.144.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1.start guest, and save internal snapshot (qemu) savevm test (qemu) info snapshots Snapshot devices: drive-ide0-0-0 Snapshot list (from drive-ide0-0-0): ID TAG VM SIZE DATE VM CLOCK 1 test 10M 2011-02-11 10:49:36 00:00:08.719 2.shutdown guest, and start with snapshot=on mode -drive file=/dev/vgtest/lvtest,if=none,id=drive-ide0-0-0,format=qcow2,cache=none,snapshot=on 3. check snapshot again (qemu) info snapshots Snapshot devices: drive-ide0-0-0 Snapshot list (from drive-ide0-0-0): ID TAG VM SIZE DATE VM CLOCK Actual results: snapshot disappear. Expected results: snapshot should be available. Additional info:
Is this reproducible with -145?
(In reply to comment #2) > Is this reproducible with -145? Can be reproduce this issue with qemu-kvm-0.12.1.2-2.145.el6.x86_64.
I wonder why I asked for reproduction back in February... This can't work because snapshot=on creates a new qcow2 file with the image as a backing file, and neither can you load an internal snapshot from a backing file nor is it easy to implement. This would be a major RFE and we don't support internal snapshots. Closing.