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I am running juno on Ubuntu 14.10. I am running ceph as the cinder backend.

If i run;
cinder create --name test-volume 1
cinder snapshot-create --name test-snapshot test-volume
cinder snapshot-delete test-snapshot
cinder snapshot-list

I will see the newly created snapshot is in 'error_deleting' state.

if i look in the cinder-volume log, I will see:
PermissionError: error unprotecting snapshot
from
File "/usr/lib/python2.7/dist-packages/cinder/volume/drivers/rbd.py",
line 692, in delete_snapshot

Does anybody have any suggestions?
I am using the packages from ubuntu for ceph as:

ceph             0.80.5-1
ceph-common      0.80.5-1
ceph-deploy      1.4.0-0ubuntu1
ceph-fs-common   0.80.5-1
ceph-mds         0.80.5-1
libcephfs1       0.80.5-1
python-ceph      0.80.5-1