Ceph

Hi all,

I build one-node cluster Ceph(0.48, the stable version installed by apt-get) and Ceph -s display HEALTH_OK.
I create a pool and a image named 'test_pool_1' and 'image_3' respectively.

When I run command in CLI:
# rbd -p test_pool_1 snap ls image_3
Error was reported like belwo:
# Error listing snapshots: (5) Input/output error

Then I view the log, it said:
_load_class could not open class $(libdir)/rados-classes/libcls_rbd.so (dlopen failed): $(libdir)/rados-classes/libcls_rbd.so: cannot open shared object file: No such file or directory

Since I viewed source code in 'pybind', I try to invoke python API to open image, it report:
error opening image image_3 at snapshot None

BTW, I'm a new Python coder.
The OSD log file, test scrip and ceph.config are attached.
Tks for helping me to solve this issue!