Thanks IIya. I upgraded the Kernel and it worked :-)

Thanks,
Sharmila


On Tue, May 27, 2014 at 11:26 PM, Ilya Dryomov <ilya.dryo...@inktank.com>wrote:

> On Tue, May 27, 2014 at 9:04 PM, Sharmila Govind
> <sharmilagov...@gmail.com> wrote:
> > Hi,
> >
> >   I am setting up a ceph cluster for some experimentation. The cluster is
> > setup successfully. But, When I try running rbd map on the host, the
> kernel
> > crashes(system hangs) and I need to do a hard reset for it to recover.
> Below
> > is my setup.
> >
> > All my nodes have Linux kernel  3.5 with Ubuntu 12.04. Iam installing the
> > emperor version of Ceph.
>
> It would help if you could capture the crash, but most probably it's
> a known bug in 3.5, which leads to a crash instead of returning an
> error to 'rbd map' when the kernel misses required feature bits, i.e.
> too old.  I would recommend running at least 3.9.
>
> Thanks,
>
>                 Ilya
>
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