All OSDs don't restart after shutdown

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Dear Users,
I'm quite new to CEPH.
I completed the tutorial here:
http://ceph.com/docs/giant/start/quick-ceph-deploy

After it, I turned off the VMs where the OSDs, Monitors and MDS were.

This morning I restarted the machines but the OSD don't want to restart, while the other
services restarted without any problems.
On one node:
[root@ceph-node1 ~]# service ceph status
=== mon.ceph-node1 ===
mon.ceph-node1: running {"version":"0.80.7"}
=== osd.2 ===
osd.2: not running.
=== mds.ceph-node1 ===
mds.ceph-node1: running {"version":"0.80.7"}

[root@ceph-node1 ~]# /etc/init.d/ceph -a start osd.2
=== osd.2 ===
failed: 'timeout 30 /usr/bin/ceph -c /etc/ceph/ceph.conf --name=osd.2 --keyring=/var/lib/ceph/osd/ceph-2/keyring osd crush create-or-move -- 2 0.01 host=ceph-node1 root=default'

This is happening on all the machines.

On the admin-node side the ceph healt command or the ceph -w hangs forever.

The logs files don't show any problem, the last line on the OSDs is from yesterday.

Could anyone help me to solve this problem?
Thank you.
Cheers.

   Luca

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