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Date: Fri, 13 Oct 2006 12:42:15 -0500
From: "Rick C. Petty" <rick-freebsd@kiwi-computer.com>
To: freebsd-hackers@freebsd.org
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Subject: Re: Fscking a partition mounted Read only...
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On Fri, Oct 13, 2006 at 10:04:07AM +0200, Joerg Sonnenberger wrote:
> On Fri, Oct 13, 2006 at 09:41:37AM +0200, VANHULLEBUS Yvan wrote:
> > 
> > Later, if root filesystem is remounted readonly, then fsck is called,
> > it will says "NO WRITE ACCESS".
> 
> mount -ur /

I'm pretty sure that's what he tried (hence "remounted readonly").  I've
noticed this behavior as well and it is quite frustrating.  If you boot
single-user, / will be mounted read-only and you can fsck it.  If you do:

	mount -u /
	mount -u -r /

You can no longer fsck it.  I've been meaning to track this down and/or
file a PR.  I'm pretty sure this used to work just fine in 3.x and 5.x.

-- Rick C. Petty