Gluster users - Sep 2018 - vfs_gluster broken

Hello list.  I had happily been sharing a Gluster volume with Samba using
vfs_gluster, but it has recently stopped working right.  I think it might have
been after updating Samba from 4.6.2 to 4.7.1 (as part of updating CentOS 7.4 to
7.5).   The shares suffer a variety of weird issues, including:

- sporadic connection refusals (credentials are accepted as valid, but volume is
unavailable)
- on Mac, when attempting to write a file: "The operation can?t be
completed because an unexpected error occurred (error code -50)."
- on Windows, sometimes when writing and sometimes when reading: "Z:\ is
not accessible. The parameter is incorrect"
-on Mac and Windows, the contents of the volume in Finder/Explorer windows
sometimes disappears, sometimes reappearing later, sometimes not.
- on Mac (and similar on Windows), volume icon sometimes disappears - maybe the
volume unmounts, but it's unclear.

All these issues vanish when I switch to sharing the FUSE-mounted volume, but,
of course, I lose the advantages of vfs_gluster.

My gluster version initially was 3.10.12.  I?ve since updated to gluster
3.12.13, but the symptoms are the same.

Does this sound familiar to anyone?

Regards,
Terry

_____________________________
Terry McGuire
Information Services and Technology (IST)
University of Alberta
Edmonton, Alberta, Canada  T6G 2H1
Phone:  780-492-9422



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On Tue, 2018-09-11 at 15:10 -0600, Terry McGuire wrote:
> Hello list.  I had happily been sharing a Gluster volume with Samba using
vfs_gluster, but it has
> recently stopped working right.  I think it might have been after updating
Samba from 4.6.2 to
> 4.7.1 (as part of updating CentOS 7.4 to 7.5). The shares suffer a variety
of weird issues,
> including:
> 
> - sporadic connection refusals (credentials are accepted as valid, but
volume is unavailable)
Does that mean after authentication share is not at all listed?
> - on Mac, when attempting to write a file: "The operation can?t be
completed because an unexpected
> error occurred (error code -50)."
How is this write performed? via Finder or via command-line?
> - on Windows, sometimes when writing and sometimes when reading: "Z:\
is not accessible. The
> parameter is incorrect"
How is this write performed? via Explorer or Powershell?
> -on Mac and Windows, the contents of the volume in Finder/Explorer windows
sometimes disappears,
> sometimes reappearing later, sometimes not.
> - on Mac (and similar on Windows), volume icon sometimes disappears - maybe
the volume unmounts,
> but it's unclear.
Is this a clustered Samba setup i.e, with CTDB for high availability?
> All these issues vanish when I switch to sharing the FUSE-mounted volume,
but, of course, I lose
> the advantages of vfs_gluster.
Can you please attach the output of `testparm -s` so as to look through how
Samba is setup?
> My gluster version initially was 3.10.12.  I?ve since updated to gluster
3.12.13, but the symptoms
> are the same.
> 
> Does this sound familiar to anyone?
All mentioned symptoms point towards a disconnection. We need to find out the
origin of this
disconnection. What do we have in logs under /var/log/samba/? Any errors?
> Regards,
> Terry
> 
> _____________________________
> Terry McGuire
> Information Services and Technology (IST)
> University of Alberta
> Edmonton, Alberta, Canada  T6G 2H1
> Phone:  780-492-9422
> 
> 
> 
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