Date: Fri, 22 Sep 2006 10:53:52 +0200 From: Ivan Voras <ivoras@fer.hr> To: freebsd-geom@freebsd.org Subject: Re: geom - help ... Message-ID: <ef08bb$lm5$1@sea.gmane.org> In-Reply-To: <20060921200909.GA13927@megan.kiwi-computer.com> References: <45122531.6010503@infracaninophile.co.uk> <20060921093038.57966.qmail@web30303.mail.mud.yahoo.com> <20060921200909.GA13927@megan.kiwi-computer.com>
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Rick C. Petty wrote: > What are data centers using? I can't imagine they're all doing gmirror and > gstripe combinations.. gvinum gives you true volume management, e.g. it's > easier to wipe a mirrored "volume" and make it raid5 or vice-versa. It is > useful to have concat + stripe + mirror + raid5 volumes managed together. Well, in "defence" of g* tools on this particular point, they are actually convenience links to "geom" executable. Instead of "gmirror label ..." you can just as well use "geom mirror label ..." which is, as far as I can tell from vinum's man page, pretty similar to it. My way of thinking about GEOM classes is that they are (when used together) almost the same as one big volume manager (like vinum), only split ("refactored") into separate kernel modules and userland libraries.
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