Date: Fri, 17 Sep 2004 08:52:53 -0600 From: Scott Long <scottl@samsco.org> To: Ceri Davies <ceri@submonkey.net> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/sys mdioctl.h src/sys/dev/md md.csrc/sbin/mdconfig Makefile mdconfig.8 mdconfig.c Message-ID: <414AFA45.60508@samsco.org> In-Reply-To: <20040917144917.GU1538@submonkey.net> 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> <20040917144917.GU1538@submonkey.net>
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Ceri Davies wrote: > 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 >>>>Capacity Mounted on >>>>+> > +> [...] >>>>+> > +> /dev/md0 15T 249M 14T >>>>0% /mnt >>>>+> > +> /dev/md1 11T 128K 10T >>>>0% /mnt2 >>>>+> > >>>>+> > ragepxe:root:~# mdconfig -l -u 0 >>>>+> > md0 swap 15T >>>>+> > ragepxe:root:~# mdconfig -l -u 1 >>>>+> > md1 vnode 11T >>>>+> >>>>+> I think most of us were already jealous enough by seeing the first >>>>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) >>>>swap-backed >>>>device on 512MB swap partition, right? >>> >>>What happens if you try to fill them? >> >>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 > from curiosity alone; I had to either ask or try it out this weekend and > I figured that somebody was sure to know already. > > Ceri No offense taken. See http://www.freebsd.org/projects/bigdisk for more details. Scott
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