Thanks for reporting back,
there are a few races with block jobs that we look into atm which might as well affect this.
Unfortunately - as it always is with races - they are hard to trigger/confirm and I had hoped you might have found a case to reliably trigger.
If you happen to find any coincidence like the jammed backup that helps to somewhat reliably recreate please reach out.
Otherwise as I said anything of Yakkety and newer already have the fixes. And while this was not the purpose it was meant for, I've seen people choose [1] sometimes just to run the base LTS with a newer virt stack.
Thanks for reporting back,
there are a few races with block jobs that we look into atm which might as well affect this.
Unfortunately - as it always is with races - they are hard to trigger/confirm and I had hoped you might have found a case to reliably trigger.
If you happen to find any coincidence like the jammed backup that helps to somewhat reliably recreate please reach out.
Otherwise as I said anything of Yakkety and newer already have the fixes. And while this was not the purpose it was meant for, I've seen people choose [1] sometimes just to run the base LTS with a newer virt stack.
[1]: https:/ /wiki.ubuntu. com/OpenStack/ CloudArchive