From: "J. Bruce Fields" <bfields@fieldses.org>
To: Neil Brown <neilb@suse.de>
Cc: nfs@lists.sourceforge.net, Jeff Layton <jlayton@redhat.com>
Subject: Re: [PATCH] nfs-utils: make auth_reload respect sub-second timestamps on etab
Date: Thu, 26 Apr 2007 08:35:11 -0400 [thread overview]
Message-ID: <20070426123511.GA453@fieldses.org> (raw)
In-Reply-To: <17968.12554.934818.359167@notabene.brown>
On Thu, Apr 26, 2007 at 02:56:42PM +1000, Neil Brown wrote:
> Actually, mountd could open etab and hold it open. auth_reload could
> stat "/var/lib/nfs/etab" and if it is a different file, then the
> content is presumably different, while if it is the same file, we can
> be certain the content is unchanged.
>
> Further, we would be certain only to read each version once - zero
> risk of re-parsing data when there is no change.
>
> That might be an even better option .... anyone want to code it up??
>
> Or is it wrong to depend on current exportfs behaviour?
Would it be worth continuing to check the mtime as well, at least for a
transitional period? (And if we see the file modified without being
replaced, we could emit a warning asking the user to notify us how that
happened.)
--b.
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next prev parent reply other threads:[~2007-04-26 12:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-25 17:39 [PATCH] nfs-utils: make auth_reload respect sub-second timestamps on etab Jeff Layton
2007-04-25 18:09 ` Jeff Layton
2007-04-25 20:13 ` Jeff Layton
2007-04-25 21:29 ` Chuck Lever
2007-04-26 4:56 ` Neil Brown
2007-04-26 12:05 ` Jeff Layton
2007-04-26 16:23 ` Jeff Layton
2007-04-26 16:58 ` J. Bruce Fields
2007-04-26 17:00 ` Jeff Layton
2007-04-26 17:24 ` J. Bruce Fields
2007-04-26 18:29 ` Jeff Layton
2007-05-03 0:55 ` Neil Brown
2007-05-03 11:58 ` Jeff Layton
2007-05-03 12:11 ` Jeff Layton
2007-04-26 17:33 ` Jeff Layton
2007-04-26 12:35 ` J. Bruce Fields [this message]
2007-04-26 4:50 ` Neil Brown
2007-04-26 11:50 ` Jeff Layton
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