[Gluster-users] directory ownership bug in gluster 3.4 & 3.5

[John Mark Walker]

Thanks Pranith - has a bug been filed so we can track this?

-JM



On Thu, Sep 4, 2014 at 12:47 PM, Pranith Kumar Karampuri <
pkarampu at redhat.com> wrote:

>  hi Peter,
>          Sorry for the delay in replying to this mail. I am able to
> reproduce the bug consistently. Disabling stat-prefetch reduced the number
> of times the errors come but it hasn't eliminated the issue.
>
> Following the strace output was interesting. The problem always seems to
> be because the uid is not matching:
> stat("/mnt/fuse1/test-target/test1409848960.3", {st_dev=makedev(0, 41),
> st_ino=12165775161408537538, st_mode=S_IFDIR|0550, st_nlink=2, *st_uid=0*,
> st_gid=9999, st_blksize=131072, st_blocks=1, st_size=6,
> st_atime=2014/09/04-22:12:40, st_mtime=2014/09/04-22:12:40,
> st_ctime=2014/09/04-22:12:40}) = 0
>
> uid is coming as 0 and gid is 9999. If we do a stat after the run is over
> it is showing things correctly. I am yet to isolate the problem. I will
> keep you updated once I find something.
>
> Pranith
>
>
> On 08/22/2014 11:15 PM, Peter Drake wrote:
>
>   I have a replicated Gluster setup, 2 servers (fs-1 and fs-2) x 1 brick.
>  I have two clients (also on fs-1 and fs-2) which mount the Gluster volume
> at /mnt/gfs (/mnt/gfs type fuse.glusterfs
> (rw,default_permissions,allow_other,max_read=131072)).  These clients have
> scripts which perform various file operations.  One operation they perform
> looks like this (note this is pseudocode, the actual script is PHP):
>
>  1. @mkdir(/mnt/gfs/somedir, 0550);
>  2. chown(1234, /mnt/gfs/somedir);
> 3. chgrp(1234, /mnt/gfs/somedir);
>
>  Note that line 1 may fail on either client because the directory may
> have been created on the other client.  These errors are
> suppressed/ignored.  When this operation is performed simultaneously on
> both clients, it usually succeeds in creating a directory with the expected
> permissions and ownership.  Intermittently however, we see that these
> directories are not owned by the expected user and group.
>
>  I've created a PHP script which can be run on two clients simultaneously
> to reproduce the error:
> https://gist.github.com/pdrakeweb/ae046b4c70a42309be43
>
>  The only log entry I can find that appears to be related is from fs-1's
> mnt-gfs.log file:
>
> [2014-08-22 12:27:57.661778] I [dht-layout.c:640:dht_layout_normalize]
> 0-test-fs-cluster-1-dht: found anomalies in /test-target/test1408710477.7.
> holes=1 overlaps=0
>  This occurs in both Gluster 3.4.1 and 3.5.2 (the only two versions I
> have tested for this).  I am unable to reproduce the problem on a local
> (non-gluster) filesystem.  I'd appreciate any insight people might have
> into what is going on here and whether this is a bug in Gluster.
>
>  --
>  *Peter Drake *|* Cloud Software Engineer* |  Acquia <http://acquia.com/>
>
> O: 781.238.4236
>
> *E:* peter.drake at acquia.com  |  Skype: pdrakeweb
>
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>
>  --
> *Peter Drake *|* Cloud Software Engineer* |  Acquia <http://acquia.com/>
>
> O: 781.238.4236
>
> *E:* peter.drake at acquia.com  |  Skype: pdrakeweb
>
> W: http://www.acquia.com <http://www.acquia.com/>
>
> Address: 25 Corporate Drive 4th Floor, Burlington, MA 01803
>
>  Acquia ranked #1 Software Vendor on the 2012 Inc 500
> <http://www.acquia.com/about-us/newsroom/press-releases/inc-magazine-unveils-31st-annual-list-america-s-fastest-growing>
>
> Acquia named One of America’s Most Promising Companies by Forbes
> <http://www.acquia.com/about-us/newsroom/press-releases/acquia-named-forbes-100-list-america-s-most-promising-companies-nov>
>
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