Ceph

I noticed this when using init-ceph on a vstart cluster:

<snip>
starting mds.a at :/0
./ceph -c ceph.conf -k /home/gregf/ceph/src/keyring mds set_max_mds 1
max_mds = 1
started.  stop.sh to stop.  see out/* (e.g. 'tail -f out/????') for debug output.
gregf@kai:~/ceph/src [master]$ ps aux | grep ceph
gregf    26870  1.0  0.4 117092 18384 ?        Ssl  12:51   0:00 ./ceph-mon -i a -c ceph.conf
gregf    26942 11.2  0.6 367808 24752 ?        Ssl  12:51   0:00 ./ceph-osd -i 0 -c ceph.conf
gregf    26965  1.0  0.4 134740 18676 ?        Ssl  12:51   0:00 ./ceph-mds -i a -c ceph.conf
gregf    27048  0.0  0.0   6024   688 pts/5    S+   12:51   0:00 grep ceph
nobody   29299  0.0  0.0  31400  3004 ?        Ss   Feb01   0:12 /usr/sbin/openvpn --writepid /var/run/openvpn.cephco-sepia.pid --daemon ovpn-cephco-sepia --status /var/run/openvpn.cephco-sepia.status 10 --cd /etc/openvpn --config /etc/openvpn/cephco-sepia.conf
gregf@kai:~/ceph/src [master]$ ./init-ceph restart mds
=== mds.a === 
=== mds.a === 
Stopping Ceph mds.a on kai...kill 26965...done
=== mds.a === 
Starting Ceph mds.a on kai...
mkdir: cannot create directory `/var/run/ceph': Permission denied
bash: line 0: ulimit: open files: cannot modify limit: Operation not permitted
starting mds.a at :/0
gregf@kai:~/ceph/src [master]$ <pre>

The problem appears to be that init-ceph is attempting to unconditionally create the "/var/run/ceph" directory, even if none of the daemons want to put anything there. It appears to be so that "init-ceph status" can look in that directory for the admin sockets? So that should probably get modified to look wherever the admin sockets actually live.