From owner-freebsd-current@FreeBSD.ORG  Fri Mar  2 05:41:38 2007
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Date: Fri, 2 Mar 2007 00:39:18 -0500
From: Yoshihiro Ota <ota@j.email.ne.jp>
To: Ed Schouten <ed@fxq.nl>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: readonly mount is not properly dismounted
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On Wed, 28 Feb 2007 09:02:52 +0100
Ed Schouten <ed@fxq.nl> wrote:

> * Yoshihiro Ota <ota@j.email.ne.jp> wrote:
> > WARNING: /mnt/tmp was not properly dismounted
> > 
> > I think all of us familier with this messages.  However, I am
> > wondering why I sometime get this message on read-only mounted
> > filesystems.  To be more exact, I have some uzipped files and from
> > time to time, I get this warning on these.
> > 
> > Does anyonw know why read-only filesystems get dirty?
> 
> I've seen this problem where mountd remounts all filesystems read-write,
> even though they are not even mentioned in /etc/exports. I once made a
> PR for it. Let me take a look... gotcha:
> 
> 	http://www.freebsd.org/cgi/query-pr.cgi?pr=106636
> 
> Are you running mound on the machine in question?
> 
> Yours,

Yes, mountd is running.  Although it is not physically
read-only file system like CD-ROM, the device is
read-only and even mount is aware of it.

That brought up my question.

# mount /dev/md2.uzip /mnt/obj/
mount: /dev/md2.uzip : Read-only file system

Regards,
Hiro