Date: Thu, 21 Apr 2005 18:39:01 -0400 From: Paul Mather <paul@gromit.dlib.vt.edu> To: Claus Guttesen <kometen@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: vinum or gvinum on FreeBSD 5.4 Message-ID: <1114123141.43365.122.camel@zappa.Chelsea-Ct.Org> In-Reply-To: <b41c755205042101398046ab4@mail.gmail.com> References: <b41c755205042101398046ab4@mail.gmail.com>
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On Thu, 2005-04-21 at 10:39 +0200, Claus Guttesen wrote: > Hi. > > I may implement (g)vinum to stripe two 2 TB raid 5 volumes into a > single 4 TB vinum-volume. The volumes reside on a atabeast doing the > raid 5. The server is a 5.4 RC2 doing nfs on i386. > > According to some threads gvinum may not be completely stable (in 5.3, > http://unix.derkeiler.com/Mailing-Lists/FreeBSD/current/2004-11/0537.html) > when doing raid 5 but works fine when striping. > > Should I go vinum or gvinum? Will newfs have problems with a 4 TB > volume? Are there any performance-degradation doing striping? In addition to vinum and gvinum, have you considered geom_stripe? See gstripe(8) for details. I've been using it for a while on 5-STABLE to join two 65 GB slices on two different drives into a single 130 GB device (/dev/stripe/data in my case). I have had no stability problems, which is why I mention this as a possible solution for you if you're worried about the stability of vinum or gvinum in 5.x. Cheers, Paul. -- e-mail: paul@gromit.dlib.vt.edu "Without music to decorate it, time is just a bunch of boring production deadlines or dates by which bills must be paid." --- Frank Vincent Zappa
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