Gluster users - Jul 2016 - root-squash permission denied on rename

Hi,

I'm fairly new to gluster so please forgive me if I'm in any way out of
protocol for this list.

I have a distributed volume with 2 servers hosting bricks and a third just
managing the system.
I really want root squashing, as there are a large number of clients and I do
not want a bad keystroke on one to wipe out the contents of the gluster
file-system.
I'm using gluster 3.7.10 on Scientific Linux 6.7.

I just cannot get gluster to work properly for normal users with root-squashing
enabled.  The problem is easiest to reproduce if one creates a directory with
mkdir, creates a file with say 'echo hi > filename' and then tries to
rename the latter to place it in the former using mv.  This fails about 50% of
the time.  My reading suggests that it occurs when gluster decides to move the
file from one brick to another as it renames it.  rebalance and fix-layout have
been run, but have long finished and the problem persists.

I've spent a fair amount of time googling this issue and it's clearly
not unprecedented, but it's supposedly fixed long before  v3.7.10.
I really would appreciate it if somebody could rescue me.  For the moment
I'm running with server.root-squash turned off.

Thanks,

Matt.

I faced similar issues with git checkout on RHS 3. I didn't debug it
further, or check if it is fixed in a recent update, but it sounds like a
similar issue since git checkout would also do a lot of renaming. Can you
try doing a git checkout to confirm if it's the same issue ? I am also
using it with no root squash for now.

On Mon, Jul 4, 2016 at 6:44 AM, Matt Robinson <m.robinson at
sheffield.ac.uk>
wrote:
> Hi,
>
> I'm fairly new to gluster so please forgive me if I'm in any way
out of
> protocol for this list.
>
> I have a distributed volume with 2 servers hosting bricks and a third just
> managing the system.
> I really want root squashing, as there are a large number of clients and I
> do not want a bad keystroke on one to wipe out the contents of the gluster
> file-system.
> I'm using gluster 3.7.10 on Scientific Linux 6.7.
>
> I just cannot get gluster to work properly for normal users with
> root-squashing enabled.  The problem is easiest to reproduce if one creates
> a directory with mkdir, creates a file with say 'echo hi >
filename' and
> then tries to rename the latter to place it in the former using mv.  This
> fails about 50% of the time.  My reading suggests that it occurs when
> gluster decides to move the file from one brick to another as it renames
> it.  rebalance and fix-layout have been run, but have long finished and the
> problem persists.
>
> I've spent a fair amount of time googling this issue and it's
clearly not
> unprecedented, but it's supposedly fixed long before  v3.7.10.
> I really would appreciate it if somebody could rescue me.  For the moment
> I'm running with server.root-squash turned off.
>
> Thanks,
>
> Matt.
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://www.gluster.org/mailman/listinfo/gluster-users
>
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Hi,

I've been hit by the same issue on SL 7.2 with the same 
not-so-satisfying solution to keep root squashing off for the time 
being. Did you find any solution or progress to this problem?

OT: You mentioned running 3.7.10 on SL 6.7. Which repo did you install 
from, or was it self-compiled? I only get 3.7.1 from the official SL repos.

Cheers,
- Michael
Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
Ingolstaedter Landstr. 1
85764 Neuherberg
www.helmholtz-muenchen.de
Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe
Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Dr. Alfons Enhsen
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671