[Gluster-users] gluster mounted volumes not following group permissions

[Greg_Swift at aotx.uscourts.gov]

I haven't tested with anything else, but on the temp files I can see
Jerry's point to not using the group with write access,  but at the end of
the day that temp file is being written and owned by the second user.  The
failure is coming from the attempt to overwrite the original file.

-greg

gluster-users-bounces at gluster.org wrote on 04/19/2011 04:06:50 PM:

>
> I am a gluster newbie, and we don't use nfs with it, but it seems
> (at least to me) that if you have 2 users sharing files in a write
> context, especially where resulting temp file namespace may clash,
> having their umask group write permissions enabled would be a
> reasonable requirement.
>
> -----Original Message-----
> From: Whit Blauvelt [mailto:whit.gluster at transpect.com]
> Sent: Tuesday, April 19, 2011 12:05 PM
> To: Gally, Jerry
> Cc: gluster-users at gluster.org
> Subject: Re: [Gluster-users] gluster mounted volumes not following
> group permissions
>
> Jerry,
>
> Here's the thing. On the same system, with the same two users, I've just
> repeated the same operations on local storage, rather than nfs-mounted
> gluster storage, and there's no such problem. The file saves just fine
after
> user2 edits it, resulting in:
>
>   -rw-rw-r-- 1 user1  staff     8 2011-04-19 15:01 dog
>   -rw-r--r-- 1 user2  staff     4 2011-04-19 15:01 dog~
>
> And the file "dog" indeed contains the edit by user2, as it should. Are
you
> suggesting that gluster uses umask settings differently than the native
> filesystem? In this case, the system where it works as expected is ext3
> rather than the ext4 systems under gluster, but that shouldn't change
this
> behavior I don't think.
>
> Whit
>
>
> On Tue, Apr 19, 2011 at 11:35:41AM -0700, Gally, Jerry wrote:
> > I presume that would be caused by a user1's umask setting that does not
> > set group write permissions on newly created files.
> >
> > -----Original Message-----
> >
> > I've just verified your report by doing the same test with 3.1.4 in an
> > Ubuntu 10.10 server environment, with the client mount via NFS from
Ubuntu
> > 8.04.4. I get exactly the same result. In this case a file is first
written
> > by user1, member of "staff" group. Then user2 opens it, adds an edit,
and
> > tries to save. The backup (using the joe editor) shows up with user2's
> > ownership:
> >
> > -rw-rw-r-- 1 user1  staff         4 2011-04-19 14:23 dog
> > -rw-r--r-- 1 user2  staff         4 2011-04-19 14:24 dog~
> >
> > But the save fails with "Error opening file" from the editor.
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