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To: Pawel Jakub Dawidek <nick@garage.freebsd.pl>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Thu, 24 Jul 2003 20:28:36 +0200."
             <20030724182836.GY43543@garage.freebsd.pl> 
Date: Thu, 24 Jul 2003 20:38:02 +0200
Message-ID: <34180.1059071882@critter.freebsd.dk>
cc: freebsd-current@freebsd.org
Subject: Re: File system deadlock. GBDE(4) and/or MD(4) related. 
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In message <20030724182836.GY43543@garage.freebsd.pl>, Pawel Jakub Dawidek writ
es:

>+> 	dd if=3D/dev/null of=3D/mnt/test.file bs=3D1m count=3D512
>
>You mean /dev/zero? But this doesn't change anything.

Yes, /dev/zero of course.

>+> >	# mdconfig -a -t vnode -f /mnt/test.file -s 512M -u 1
>+>=20
>+> What you have found has nothing to do with GBDE, I think it is the
>+> usual "vnode backed md(4)" deadlock.
>
>Hmm? So you're trying to tell that this is somehow normal behaviour?

We've had problems like this before with vnode backed MD(4) devices
(and vn(4) devices before that).

One way or another:  It is _not_ a GBDE problem.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.