Date: Fri, 17 Sep 2004 08:40:54 -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: <414AF776.2020708@samsco.org> In-Reply-To: <20040917143400.GT1538@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>
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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? > > Ceri 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. Scott
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