Re: Random blocks when accessing rbd images

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Am Donnerstag, 15. Dezember 2011, 17:32:25 schrieben Sie:
> On 12/15/2011 05:07 PM, Guido Winkelmann wrote:
> > Hi,
> > 
> > I've got a small ceph cluster with one mon, one mds and two osds (all on
> > the same machine, for now), that I want to use as a block- and file
> > storage backend for qemu machine virtualisation.
> > 
> > I found that read access to some of the rbd images, or parts of some of
> > them sometimes blocks indefinitely, usually after the image has been
> > sitting around untouched for a while, for example over night. This has
> > the effect that virtual machines that try to access their disks as well
> > as rbd commands like "rbd cp" will just hang indefinitely.
> > 
> >  I found that these blocks can usually be "fixed" by restarting one of
> >  the> 
> > osds.
> > 
> > The last time this happened, ceph -s reported one of the osds to be in
> > state "active+clean+scrubbing". (I'm afraid I don't have the complete
> > output from ceph -s anymore.)
> > 
> > Does anybody have any idea what could be going wrong here?
> 
> I think it's fixed in v0.39

I'm already using 0.39, so, no. (Should have mentioned that to start with...)

        Guido
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