The important difference between your -drive command line and my -blockdev example is that I used the node-name to reference the image. You can specify a node-name with -drive, too (having both id and node- name is one of the main things that I meant what I said mixing both styles can be confusing).
I also don't think that index=1 does anything useful when used with if=none, so you can leave that out. Putting everything together, we get this: $ qemu-system-x86_64 \ -drive node-name=d01,file=disk1.img,format=qcow2,if=none \ -device virtio-blk,drive=d01,serial=s01,share-rw=on \ -device virtio-blk,drive=d01,serial=s01,share-rw=on -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1716028 Title: qemu 2.10 locks images with no feature flag To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1716028/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs