linux-kernel - Re: NFS hang + umount -f: better behaviour requested.

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Message-ID: <20070821165544.GA27995@fieldses.org>
Date:	Tue, 21 Aug 2007 12:55:44 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	John Stoffel <john@...ffel.org>
Cc:	Robin Lee Powell <rlpowell@...italkingdom.org>,
	linux-kernel@...r.kernel.org
Subject: Re: NFS hang + umount -f: better behaviour requested.

On Tue, Aug 21, 2007 at 12:43:47PM -0400, John Stoffel wrote:
> Robin> I've read every man page I could find, and the only nfs option
> Robin> that semes even vaguely helpful is "soft", but everything that
> Robin> mentions "soft" also says to never use it.
> 
> I think the man pages are out of date, or ignoring reality.

No.  The price of using "soft" is the chance of data corruption, since
an application may for example be left thinking that a write has
succeeded when it hasn't.  See

	http://nfs.sourceforge.net/#faq_e4

--b.
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