On Thu, May 05, 2011 at 11:45:27AM +0200, Christoph Raible wrote:
> in an other mail (http://marc.info/?t=130442346600006&r=1&w=2)
> I explained my Config. And after two changes in the config file
> the ceph-fs works fine :)
Are you running an osd on the same machine that has the /ceph mount?
There's known memory management problems with loopback network
filesystems; even NFS is known to trigger that. Using the kernel ceph
client to mount a ceph filesystem hosted on the same machine is not
safe.
A simple dd might not trigger the problems, because the kernel will
recognize the streaming write pattern and discard the pages early from
the buffer cache, but a full VM install isn't a clean streaming write.
--
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