You're right about the errors. Apparently I had a full snapshot, but it doesn't make a difference.
Meanwhile, I've had the time to test this. It is easy to reproduce: - Create a snapshot (1 is enough) - Cause some I/O, like qemu-img convert (this does /not/ have to be the snapshotted volume) - Watch your virtual machines crash and/or your system burn Doing the same qemu-img without any snapshots present is no problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/712392 Title: qemu-img convert blocks other tasks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs