Return-Path: <linux-nfs-owner@vger.kernel.org>
Received: from caiajhbihbdd.dreamhost.com ([208.97.187.133]:49352 "EHLO
	webmail5.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL)
	by vger.kernel.org with ESMTP id S1760384AbZJMQAH (ORCPT
	<rfc822;linux-nfs@vger.kernel.org>); Tue, 13 Oct 2009 12:00:07 -0400
Message-ID: <08395e6249442278ab2b59c2ae4cfd14.squirrel@webmail.rainiday.com>
In-Reply-To: <20091013114441.2882c8b9@tlielax.poochiereds.net>
References: <c8e974302190b867ad8ea49d8158f1db.squirrel@webmail.rainiday.com>
    <20091009121602.5ec86dfb@tlielax.poochiereds.net>
    <1c358fde92c49215d84129a1bfe2c6ec.squirrel@webmail.rainiday.com>
    <20091010090039.4dfd1dfb@tlielax.poochiereds.net>
    <ee56329e7d86a3e4b15001a39bb7e14a.squirrel@webmail.rainiday.com>
    <20091013114441.2882c8b9@tlielax.poochiereds.net>
Date: Tue, 13 Oct 2009 08:59:29 -0700
Subject: Re: [NFS] NFS/krb and batch jobs - doable?
From: raini@rainiday.com
To: "Jeff Layton" <jlayton@redhat.com>
Cc: linux-nfs@vger.kernel.org, "Kevin Coffman" <kwc@citi.umich.edu>
Content-Type: text/plain; charset=US-ASCII
Sender: linux-nfs-owner@vger.kernel.org
List-ID: <linux-nfs.vger.kernel.org>
MIME-Version: 1.0


> You and Kevin are correct. rpc.gssd only looks at the mtime. When I did
> the work to allow the CIFS SPNGEO upcall to find alternate credcaches,
> I implemented the behavior I described (prefer the latest TGT
> expiration) -- sorry for the confusion...
>
> It probably wouldn't be too hard to change rpc.gssd to prefer
> credcaches with the latest TGT expiration if it was considered a
> desirable change.
>
> Kevin, any thoughts?

This would be a big plus from me - I still wouldn't be able to create
per-job ccaches of course, but if a user who knew they needed to run a job
could create a long lifetime renewable ticket in /tmp/krb5cc_<uid>_batch,
say, and NFS would use this in preference to a later login ticket, this
would really help.