Ceph: Error librbd to create a clone

[COPINE Patrick <patrick.copine@xxxxxxxxx>]

Hi,

I would like create a clone with a Python code, but I have a syntax error. In first, I have created an image (type 2), and after a snapshot. The code is here. 

Best regards,

root@ceph-clt:~/src# cat v4.py

# -*- coding:utf-8 -*-

import rbd

import rados

FCONF='/etc/ceph/ceph.conf'

POOL='rbd'

try:

  # connexion au cluster

  cluster = rados.Rados(conffile=FCONF)

  cluster.connect()

  # utilisation du pool 'rbd'

  p_ioctx = cluster.open_ioctx(POOL)

  c_ioctx = cluster.open_ioctx(POOL)

  try:

    # instanciation d'un objet de type 'rbd' pour cloner l'image

    rbd_inst = rbd.RBD()

    # création du clone "c1-foo3

    rbd_inst.clone(p_ioctx, 'foo3', 's1-foo3', c_ioctx, 'c1-foo3') 

  finally:

    p_ioctx.close()

    c_ioctx.close()

finally:

  cluster.shutdown()

root@ceph-clt:~/src# python v4.py

Traceback (most recent call last):

  File "v4.py", line 22, in <module>

    rbd_inst.clone(p_ioctx, 'foo3', 's1-foo3', c_ioctx, 'c1-foo3', 0, 0) 

  File "/usr/lib/python2.7/dist-packages/rbd.py", line 239, in clone

    raise make_ex(ret, 'error creating clone')

rbd.InvalidArgument: error creating clone

Patrick COPINE (tél: +33680117101, +33652566319)

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