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Date:      Fri, 17 Sep 2004 15:49:17 +0100
From:      Ceri Davies <ceri@submonkey.net>
To:        Scott Long <scottl@samsco.org>
Cc:        cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/sys mdioctl.h src/sys/dev/md md.c src/sbin/mdconfig Makefile mdconfig.8 mdconfig.c
Message-ID:  <20040917144917.GU1538@submonkey.net>
In-Reply-To: <414AF776.2020708@samsco.org>
References:  <200409162132.i8GLWDpF050910@repoman.freebsd.org> <20040916213937.GF30151@darkness.comp.waw.pl> <20040916214602.GG30151@darkness.comp.waw.pl> <20040916220959.GA45451@gothmog.gr> <20040916224536.GI30151@darkness.comp.waw.pl> <20040917143400.GT1538@submonkey.net> <414AF776.2020708@samsco.org>

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On Fri, Sep 17, 2004 at 08:40:54AM -0600, Scott Long wrote:
> Ceri Davies wrote:
> >On Fri, Sep 17, 2004 at 12:45:36AM +0200, Pawel Jakub Dawidek wrote:
> >
> >>On Fri, Sep 17, 2004 at 01:09:59AM +0300, Giorgos Keramidas wrote:
> >>+> > +> 	Filesystem                        Size    Used   Avail=20
> >>Capacity  Mounted on
> >>+> > +> 	[...]
> >>+> > +> 	/dev/md0                           15T    249M     14T    =20
> >>0%    /mnt
> >>+> > +> 	/dev/md1                           11T    128K     10T    =20
> >>0%    /mnt2
> >>+> >
> >>+> > ragepxe:root:~# mdconfig -l -u 0
> >>+> > md0     swap       15T
> >>+> > ragepxe:root:~# mdconfig -l -u 1
> >>+> > md1     vnode      11T
> >>+>=20
> >>+> I think most of us were already jealous enough by seeing the first=
=20
> >>post :-P
> >>+> (Thanks for the extra md coolness these commits made possible :-))
> >>
> >>Jealous about what?:) You know, that you can setup 15TB of md(4)=20
> >>swap-backed
> >>device on 512MB swap partition, right?
> >
> >What happens if you try to fill them?
>=20
> The advantage of what Pawel has done is that you can simulate very large
> disks for the purpose of debugging other utlities like sysinstall,
> bsdlabel, fdisk, newfs, growfs, etc.  Some of these programs have
> limitations that cannot be changed, but they can be verified and fixed
> to have sane behaviour.

Don't misunderstand me, I'm appreciative of that.  My question stemmed
=66rom curiosity alone; I had to either ask or try it out this weekend and
I figured that somebody was sure to know already.

Ceri
--=20
It is not tinfoil, it is my new skin.  I am a robot.

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