ceph/doc/dev/osd-class-path.rst
Tommi Virtanen 81feae12e1 doc: Add misc explanations of Ceph internals from email.
Signed-off-by: Tommi Virtanen <tommi.virtanen@dreamhost.com>
2011-12-14 11:19:00 -08:00

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