As outlined before the time from device_del to the DEVICE_DELETED is indeed "a bit longer" in Focal (from ~0.1s to ~6s), but other than that I couldn't find anything else yet.
We were wondering due to [1] in a related bug if it might be dependent to (over)load. I was consuming Disk and CPU in a controlled fashion (stress-ng --cpu 8 --io 4 --hdd 4 1x in the container the load is in and 1x on the Host). On that I was running attach/detach loops but in all of a two hundred retries it was "->device_del <-DEVICE_DELETED <-DEVICE_DELETED ->blockdev-del ->blockdev-del". James Page was doing tests (thanks) with real Openstack and Ceph but couldn't - so far -trigger the issue either. He will likely later update the bug as well, but is currently trying to ramp up concurrency to more likely hit the issue. https://bugs.launchpad.net/nova/+bug/1882521/comments/8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1894804 Title: Second DEVICE_DELETED event missing during virtio-blk disk device detach To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1894804/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
