From: Trond Myklebust <Trond.Myklebust@netapp.com>
To: Jeff Layton <jlayton@redhat.com>
Cc: Chuck Lever <chuck.lever@oracle.com>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: whither NFS umount?
Date: Tue, 12 Oct 2010 15:44:09 -0400 [thread overview]
Message-ID: <1286912649.1956.19.camel@heimdal.trondhjem.org> (raw)
In-Reply-To: <20101012151826.76b75f52@corrin.poochiereds.net>
On Tue, 2010-10-12 at 15:18 -0400, Jeff Layton wrote:
> I think the part that causes problems is having userspace do this. In
> theory, if the kernel were in charge of sending the UMNT, then it's not
> really a problem since it knows when to do it. If we have code that
> sends a UMNT already, why not do a best-effort UMNT call from the
> kernel when we tear down the sb?
Purely for the pleasure of allowing the server to maintain inaccurate
statistics about who is currently mounting what? I think not...
You can get far more accurate results by replacing the MNT/UMNT state
counter with a purely server-based scheme to track who accessed one or
more files on each exported partition in the past 5 minutes or so. That
would even work with NFSv4...
> Either way, eliminating umount.nfs would be nice...
Agreed.
Trond
next prev parent reply other threads:[~2010-10-12 19:44 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-12 16:29 whither NFS umount? Chuck Lever
2010-10-12 17:04 ` Trond Myklebust
[not found] ` <1286903046.24878.13.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2010-10-12 17:57 ` Chuck Lever
2010-10-12 19:18 ` Jeff Layton
2010-10-12 19:44 ` Trond Myklebust [this message]
2010-10-12 19:52 ` Jeff Layton
2010-10-12 19:59 ` Chuck Lever
2010-10-12 20:21 ` Trond Myklebust
2010-10-12 20:26 ` Jeff Layton
2010-10-12 20:34 ` Chuck Lever
2010-10-12 20:50 ` Jeff Layton
2010-10-12 21:19 ` Chuck Lever
2010-10-13 1:00 ` Jeff Layton
2010-10-13 17:40 ` Steve Dickson
2010-10-13 18:13 ` Jeff Layton
2010-10-13 18:45 ` Steve Dickson
[not found] ` <4CB5FE65.3090409-AfCzQyP5zfLQT0dZR+AlfA@public.gmane.org>
2010-10-13 18:56 ` Jeff Layton
2010-10-13 18:58 ` Jeff Layton
[not found] ` <20101013145601.468acc2a-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>
2010-10-13 19:31 ` Steve Dickson
2010-10-13 20:47 ` Chuck Lever
2010-10-13 23:19 ` Steve Dickson
2010-10-14 15:29 ` Chuck Lever
2010-10-14 18:27 ` Steve Dickson
2010-10-14 19:13 ` Chuck Lever
2010-10-14 21:24 ` Steve Dickson
2010-10-14 22:22 ` Chuck Lever
2010-10-15 13:11 ` Steve Dickson
2010-10-15 13:41 ` Jeff Layton
2010-10-15 16:00 ` Chuck Lever
2010-10-15 20:08 ` Steve Dickson
2010-10-18 15:18 ` Chuck Lever
2010-10-13 18:18 ` Trond Myklebust
2010-10-13 19:28 ` Steve Dickson
2010-10-14 14:00 ` J. Bruce Fields
2010-10-14 14:17 ` Trond Myklebust
[not found] ` <1287065841.3015.233.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2010-10-14 14:34 ` J. Bruce Fields
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