Comment 3 for bug 1722470

After more searches, it appears it's a disk space issue on the undercloud:
InstanceDeployFailure: Failed to provision instance 0cf68149-bae6-432c-93b2-6d58d2a48661: Failed to deploy. Error: Disk volume where '/var/lib/ironic/master_images/tmpjEgvzp' is located doesn't have enough disk space. Required 5211 MiB, only 4467 MiB available space present.

The undercloud we're running on had about 4.9G of free space, this matches the amount in the log. This log is from nova-compute, btw.

It would be good to raise that one into mistral so that it actually hit the user in the eye. Another idea would be to get a pre-check flight for that. Indeed, this issue is raised long, long after the start, when the deploy process actually starts the node provisionning: ironic wants to fetch the image from glance storage, and can't do so because it lacks the necessary space.

Cheers,

C.