From mboxrd@z Thu Jan  1 00:00:00 1970
From: Guido Winkelmann <guido-ceph@thisisnotatest.de>
Subject: Re: Cannot create an rbd image
Date: Mon, 05 Dec 2011 19:04:49 +0100
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Am Montag, 5. Dezember 2011, 09:57:22 schrieb Josh Durgin:
> On 12/05/2011 08:57 AM, Guido Winkelmann wrote:
> > Hi,
> > 
> > I cannot create a new rbd image in a newly created ceph cluster. When I
> > try it, I get these messages:
> > 
> > # rbd create testimage1 --size 10000
> 
> <other output trimmed>
> 
> > 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 (bug #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.

That did the trick, thanks!

(It was /usr/local/lib/rados-classes actually)

	Guido