Comment 23 for bug 1878024

On Train, I tried enabling this feature and I saw these errors in the log:

2020-06-19 03:06:38.011 12118 ERROR nova.compute.manager FileNotFoundError: [Errno 2] No such file or directory: '/var/lib/nova/instances/_base'

Was the case missed where base images do not always exist on every hypervisor?

In my case, these are brand new hypervisors, never used with ephemeral storage. Over time, I expect the "_base" would appear on each, and the error would disappear. But, I think there should be coverage for the case that hypervisors won't start with a "_base", and depending upon how machines are assigned, they may never get a "_base".