Comment 10 for bug 1420094

I found this entry on one of the broken (ceph-osd/4) containers:
2016-06-19 00:57:33 INFO mon-relation-changed Traceback (most recent call last):
2016-06-19 00:57:33 INFO mon-relation-changed File "/usr/sbin/ceph-disk", line 3019, in <module>
2016-06-19 00:57:33 INFO mon-relation-changed main()
2016-06-19 00:57:33 INFO mon-relation-changed File "/usr/sbin/ceph-disk", line 2997, in main
2016-06-19 00:57:33 INFO mon-relation-changed args.func(args)
2016-06-19 00:57:33 INFO mon-relation-changed File "/usr/sbin/ceph-disk", line 1507, in main_prepare
2016-06-19 00:57:33 INFO mon-relation-changed zap(args.data)
2016-06-19 00:57:33 INFO mon-relation-changed File "/usr/sbin/ceph-disk", line 1052, in zap
2016-06-19 00:57:33 INFO mon-relation-changed with file(dev, 'wb') as dev_file:
2016-06-19 00:57:33 INFO mon-relation-changed IOError: [Errno 123] No medium found: '/dev/sdc'
2016-06-19 00:57:33 ERROR juju-log mon:32: Unable to initialize device: /dev/sdc

I even opened another thread: https://bugs.launchpad.net/landscape/+bug/1593802 .