Open Stack

I recall encountering something like this once when an instance termination failed halfway through - the root disk was removed but the instance record remained in the database. In my case, it didn't spontaneously happen, but was a requested termination that blew up at some point between removing the root disk and removing the instance record from the DB. If the instance action log doesn't indicate that anyone asked for the instance to be terminated, that's a bit weird.

From: jomlowe at iu.edu 
Subject: Re:[Openstack-operators] ceph rbd root disk unexpected deletion

Over the weekend a user reported that his instance was in a stopped state and could not be started, on further examination it appears that the vm had crashed and the strange thing is that the root disk is now gone.  Has anybody come across anything like this before?

And why on earth is it attempting deletion of the rbd device without deletion of the instance?

2017-03-12 10:59:07.591 3010 WARNING nova.virt.libvirt.storage.rbd_utils [-] rbd remove 4367a2e4-d704-490d-b3a6-129b9465cd0d_disk in pool ephemeral-vms failed
2017-03-12 10:59:17.613 3010 WARNING nova.virt.libvirt.storage.rbd_utils [-] rbd remove 4367a2e4-d704-490d-b3a6-129b9465cd0d_disk in pool ephemeral-vms failed
2017-03-12 10:59:26.143 3010 WARNING nova.virt.libvirt.storage.rbd_utils [-] rbd remove 4367a2e4-d704-490d-b3a6-129b9465cd0d_disk in pool ephemeral-vms failed

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