Ceph

$ sudo ceph-disk list

Traceback (most recent call last):
  File "/usr/sbin/ceph-disk", line 2346, in <module>
    main()
  File "/usr/sbin/ceph-disk", line 2335, in main
    args.func(args)
  File "/usr/sbin/ceph-disk", line 2012, in main_list
    part_uuid = get_partition_uuid(dev)
  File "/usr/sbin/ceph-disk", line 1922, in get_partition_uuid
    stderr = subprocess.PIPE).stdout.read()
  File "/usr/lib/python2.7/subprocess.py", line 709, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1326, in _execute_child
    raise child_exception

OSError: [Errno 2] No such file or directory

$ ceph -v
ceph version 0.72-447-g096f9b3 (096f9b3268b998226f1bf081e56bf28a0573121d)

Looks to be caused by lack of sgdisk:

Line 1922 of ceph-disk is highlighted.

def get_partition_uuid(dev):
    (base, partnum) = re.match('(\D+)(\d+)', dev).group(1, 2)
    out = subprocess.Popen(
        [ 'sgdisk', '-i', partnum, base ],
        stdout = subprocess.PIPE,
        stderr = subprocess.PIPE).stdout.read()    <=======
    for line in out.splitlines():
        m = re.match('Partition unique GUID: (\S+)', line)
        if m:
            return m.group(1).lower()
    return None

(installing sgdisk fixed it).