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From: Philip Lawatsch <philip@lawatsch.at>
To: linux-kernel@vger.kernel.org
Subject: NFSv3 / VFS and group problems
Date: Mon, 23 Jan 2006 23:50:43 +0100	[thread overview]
Message-ID: <43D55DC3.9080900@lawatsch.at> (raw)

Hi,

I've had the joy to debug a production system with a really crappy setup.

They have a user "fred" which belongs to ~5000 groups (say 
group1-group5000).


So far so bad. Even worse, they have a nfs backend  with lots of files 
which are owned by users belonging to these groups.

Ok, now my problem is that "fred" can open a file which is

-rw-rw----  someone group300 foo

but a read on this file will fail with EIO

Since group300 is way beyond the 16 groups nfs supports shouldn't fred 
actually get a EACCES back from the open call?

Problem happens with 2.6.13 (vanilla, not tainted) on both server and 
client.


kind regards Philip

             reply	other threads:[~2006-01-23 22:50 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-23 22:50 Philip Lawatsch [this message]
2006-01-24 12:01 ` Philip Lawatsch

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