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Date:      Wed, 10 Feb 1999 10:48:42 -0800
From:      "David O'Brien" <obrien@NUXI.com>
To:        mi@aldan.algebra.com
Cc:        current@FreeBSD.ORG
Subject:   Re: umount -f
Message-ID:  <19990210104842.A21617@relay.nuxi.com>
In-Reply-To: <199902101814.NAA10513@misha.cisco.com>; from Mikhail Teterin on Wed, Feb 10, 1999 at 01:14:54PM -0500
References:  <199902101814.NAA10513@misha.cisco.com>

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> Will it ever work as it appears it should? Currently I have (on 2.2.8)
> 	
> 	mi@xxx:/tmp (1032) umount -f phosphorus:/phosphorus
> 	umount: /phosphorus: Device busy

>From an email from Peter Wemm:

    In this situation, you need to do this:
    umount -f -t nfs phosphorus:/phosphorus

This causes umount to stat("phosphorus:/phosphorus") (which fails) rather
than "/mnt".

I really don't understand all the reasons behind this, but there seems to
be a result of a lot of hackery so that:

ln -s /dev/wd0c /dev/cdrom
mount /dev/cdrom /mnt
umount /dev/cdrom /mnt
.. works.  I don't recall the problems that it has to work around, but I 
gather that at mount time the symlink is followed and "/dev/wd0c" is 
installed in the mount table - so "/dev/cdrom" would not be matched by 
umount(2).

-----

bde commented that the current behavior is needed so that "/dev/cdrom"
shows up in ``mount'' w/o args instead of "/dev/wd0c".

-- 
-- David    (obrien@NUXI.com  -or-  obrien@FreeBSD.org)

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