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7 2011-12-05 17:41:00.994075 7ffe8b5c3760 librbd: failed to assign a block name for image
8 create error: error 5: Input/output error
10 This usually happens because your OSDs can't find ``cls_rbd.so``. They
11 search for it in ``osd_class_dir``, which may not be set correctly by
12 default (http://tracker.newdream.net/issues/1722).
14 Most likely it's looking in ``/usr/lib/rados-classes`` instead of
15 ``/usr/lib64/rados-classes`` - change ``osd_class_dir`` in your
16 ``ceph.conf`` and restart the OSDs to fix it.