err: No such file or directory when CEPH_DATA_DIR is set

[sven mark]

if CEPH_DATA_DIR if not set ,installion is ok,
when CEPH_DATA_DIR is set ,dir /var/lib/ceph appear,
and exception occurs:

++/opt/stack/devstack-plugin-ceph/devstack/lib/ceph:configure_ceph:389 sudo ceph-mon -c /etc/ceph/ceph.conf --mkfs -i ubuntu --keyring /opt/ceph/tmp/keyring.mon.ubuntu
2017-02-20 09:52:53.735 | mkdir(/var/lib/ceph/mon/ceph-ubuntu) : (2) No such file or directory
2017-02-20 09:52:53.741 | +/opt/stack/devstack-plugin-ceph/devstack/lib/ceph:configure_ceph:1 exit_trap

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/435927

[Ramana Raja (rraja)]

Duplicate of https://bugs.launchpad.net/devstack-plugin-ceph/+bug/1658142

[OpenStack Infra (hudson-openstack)]

Change abandoned by sven mark (<email address hidden>) on branch: master
Review: https://review.openstack.org/435927