Hi Dennis...
We use ceph-fuse in 10.2.2 and we saw two main issues with it
immediately after upgrading from Infernalis to Jewel.
In our case, we are enabling ceph-fuse in a heavily used Linux cluster,
and our users complained about the mount points becoming unavailable
some time after their applications start up.
First we saw
https://github.com/ceph/ceph/pull/10027
and once that was fixed, we saw
http://tracker.ceph.com/issues/16610
There is a long ML thread with the subject 'ceph-fuse segfaults ( jewel
10.2.2)' on the topic. At the end, RH staff proposed some patches which
we applied (we recompile ceph ourselves) and which resolved the issues
we saw.
You should run ceph-fuse in debug mode to actually check what segfaults
you may have, and if it is a similar problem. You can do that by
mounting ceph-fuse with nohup and the '-d'. Something like:
nohup ceph-fuse --id mount_user -k <path to you key> -m <mon ip>:6789 -d
-r /cephfs /coepp/cephfs > /path/to/some/log 2>&1 &
If you want an even bigger log level, you should set 'debug client = 20'
in your /etc/ceph/ceph.conf before mounting.
Cheers
Goncalo
On 08/24/2016 10:28 PM, Dennis Kramer (DT) wrote:
Hi all,
Running ceph version 10.2.2 (45107e21c568dd033c2f0a3107dec8f0b0e58374)
on Ubuntu 16.04LTS.
Currently I have the weirdest thing, I have a bunch of linux clients,
mostly debian based (Ubuntu/Mint). They all use version 10.2.2 of
ceph-fuse. I'm running cephfs since Hammer without any issues, but
upgraded last week to Jewel and now my clients get:
"Transport endpoint is not connected".
It seems the error only arises when the client is using the GUI when
they browse through the ceph-fuse mount, some use nemo, some nautilus.
The error doesnt show up immediatly, sometimes the client can browse
through the share for some time before they are kicked out with the
error.
But when I strictly use the shell to browse the ceph-fuse mount in the
CLI it works without any issues, when I try to use the GUI browser on
the same client, the error shows and I get kicked out of the ceph-fuse
mount until I remount.
Any suggestions?
With regards,
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Goncalo Borges
Research Computing
ARC Centre of Excellence for Particle Physics at the Terascale
School of Physics A28 | University of Sydney, NSW 2006
T: +61 2 93511937
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