Ceph

ceph-disk list fails on dmcrypt devices

ceph-disk --verbose list
DEBUG:ceph-disk:Mounting /dev/vdb1 on /var/lib/ceph/tmp/mnt.1xezZz with fstype None options 
Traceback (most recent call last):
  File "/tmp/ceph/src/ceph-disk", line 2342, in <module>
    main()
  File "/tmp/ceph/src/ceph-disk", line 2331, in main
    args.func(args)
  File "/tmp/ceph/src/ceph-disk", line 2015, in main_list
    tpath = mount(dev=dev, fstype=fs_type, options='')
  File "/tmp/ceph/src/ceph-disk", line 678, in mount
    path,
  File "/usr/lib/python2.7/subprocess.py", line 535, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/usr/lib/python2.7/subprocess.py", line 522, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception
TypeError: execv() arg 2 must contain only strings
root@target160075:~/ceph/qa/workunits# blkid -s TYPE /dev/vdb1
root@target160075:~/ceph/qa/workunits# mount | grep ceph-0
/dev/mapper/d159d559-8ef2-400c-86d3-eaebf259d2d1 on /var/lib/ceph/osd/ceph-0 type xfs (rw,noatime,inode64)
root@target160075:~/ceph/qa/workunits# cat /sys/block/dm-0/dm/name
d159d559-8ef2-400c-86d3-eaebf259d2d1
root@target160075:~/ceph/qa/workunits# ls /sys/block/dm-0/slaves/
vdb1
root@target160075:~/ceph/qa/workunits# 
root@target160075:~/ceph/qa/workunits# sgdisk -i 1 /dev/vdb                                                       
Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-5EC00CEFF05D (Unknown)

Because it tries blkid on /dev/vdb1 although it is of type DMCRYPT_OSD_UUID = '4fbd7e29-9d25-41b8-afd0-5ec00ceff05d'. It returns None and fails the mount. It should skip it instead.