I debug fuse mounts by running glusterfs binary directly with the below
command. I find it works best to incorporate this command into a test
script.

'glusterfs --volfile-server=$onevolumeserver --log-file=$logfile
--log-level=$level --volfile-id=$volname $mountpoint`

I like to use '--no-daemon', or the '--debug'[1]. For $level, start
with DEBUG, then try TRACE. TRACE is _very_ verbose.

For more info, see: 'glusterfs --help' or 'man glusterfs'.

The mount.glusterfs handler may be reviewed via:  'less -S $(which
mount.glusterfs)'

[1] Run in debug mode.  This option sets --no-daemon, --log-level to DEBUG,
and --log-file to console.

On Fri, Jan 13, 2017 at 7:25 AM, Stephen Martin <s...@hypersrv.com> wrote:

> None that I am aware of, would I be looking in Gluster logs to see EIO?
>
> I had a look at the source code for fuse_writev_cbk to see if I could give
> me some hints as to where the issue is however no joy.
>
> Would there be somewhere that would tell me what operation is failing what
> file etc? Maybe I can turn up logging level.
>
> > On 13 Jan 2017, at 12:14, Mohammed Rafi K C <rkavu...@redhat.com> wrote:
> >
> > the writes might have failed with EIO. Was there any network failure
> > back and forth ?
> >
> >
> > RafI KC
> >
> >
> > On 01/12/2017 07:50 PM, Stephen Martin wrote:
> >> Hi looking for help with an error I’m getting.
> >>
> >> I’m new to Gluster but have gone though most of the getting started and
> overview documentation.
> >>
> >> I have been given a production server that uses Gluster and although
> its up and running and fuctioning I see lots of errors in the logs
> >>
> >>    [2017-01-12 13:19:37.326562] W [fuse-bridge.c:2167:fuse_writev_cbk]
> 0-glusterfs-fuse: 5852034: WRITE => -1 (Input/output error)
> >>
> >> I don't really know what action caused it, I get lots of these logged
> how can I start a diagnostic?
> >>
> >> Thanks
> >>
> >> .
> >> _______________________________________________
> >> Gluster-users mailing list
> >> Gluster-users@gluster.org
> >> http://www.gluster.org/mailman/listinfo/gluster-users
> >
>
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