rbd lock list command failure

[Huamin Chen <hchen@redhat.com>]

Hi

Running "rbd lock list" inside a Docker container yields mixed results. Sometimes I can get the right results but most times I just get errors.

A good run is like this:
[root@host server]# docker run --privileged --net=host -v /dev:/dev -v /sys:/sys ceph/base rbd lock list foo --pool kube --id kube -m host:6789 --key=AQAMgXhVwBCeDhAA9nlPaFyfUSatGD4drFWDvQ==
2015-09-09 16:11:16.812858 7f3337ff5840 -1 did not load config file, using default settings.
There is 1 exclusive lock on this image.
Locker      ID                                                     Address                
client.4333 kubelet_lock_magic_host 10.16.154.78:0/1000001 

Same commands but with error:
[root@host server]# docker run --privileged --net=host -v /dev:/dev -v /sys:/sys ceph/base rbd lock list foo --pool kube --id kube -m host:6789 --key=AQAMgXhVwBCeDhAA9nlPaFyfUSatGD4drFWDvQ==
2015-09-09 16:11:30.430345 7f4159766840 -1 did not load config file, using default settings.
2015-09-09 16:11:30.464193 7f4159766840 -1 librbd::ImageCtx: error finding header: (108) Cannot send after transport endpoint shutdown
rbd: error opening image foo: (108) Cannot send after transport endpoint shutdown

rbd version:
[root@host server]# docker run -ti ceph/base ceph -v
ceph version 0.94.2 (5fb85614ca8f354284c713a2f9c610860720bbf3)

ceph server version:
# ceph -v
ceph version 0.80.9 (b5a67f0e1d15385bc0d60a6da6e7fc810bde6047)