Date: Wed, 12 Nov 2003 11:58:56 +0100 From: Pawel Jakub Dawidek <nick@garage.freebsd.pl> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: Lukas Ertl <l.ertl@univie.ac.at> Subject: Re: geom_mirror implementation Message-ID: <20031112105856.GJ84474@garage.freebsd.pl> In-Reply-To: <33133.1068628823@critter.freebsd.dk> References: <20031109023041.GA9171@VARK.homeunix.com> <33133.1068628823@critter.freebsd.dk>
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--nV0Xx5nODoP5kWxY Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Nov 12, 2003 at 10:20:23AM +0100, Poul-Henning Kamp wrote: +> With regards to the larger "volume management picture" I will +> reiterate my position: +>=20 +> Ideally I would prefer to have a set of primitive GEOM classes, +> GEOM_MIRROR, GEOM_STRIPE, GEOM_RAID5 etc and a separate set of +> "controller" GEOM classes, GEOM_VINUM, GEOM_RF, GEOM_VERITAS, to +> recognize the various "traditional LVM" metadata on the disk, and +> from that metadata stack the primitive modules. This would in the +> long term give us the maximal flexibility and ability with the +> least code. Actually I've done already GEOM_STRIPE class: http://garage.freebsd.pl/geom_stripe.tbz # stripe -v -s 65536 test /dev/da0 /dev/da1 /dev/da2 /dev/da3 Magic value stored on /dev/da0 Magic value stored on /dev/da1 Magic value stored on /dev/da2 Magic value stored on /dev/da3 # ls -l /dev/*.stripe /dev/test.stripe =46rom my tests it is a bit faster than ccd(4). +> So realistically I expect that we will some day soon see a +> GEOM_RAIDFRAME (I gather Pawel is trying to help Scott on this). Not really. I've start planing something different (see my previous mail). --=20 Pawel Jakub Dawidek pawel@dawidek.net UNIX Systems Programmer/Administrator http://garage.freebsd.pl Am I Evil? Yes, I Am! http://cerber.sourceforge.net --nV0Xx5nODoP5kWxY Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (FreeBSD) iQCVAwUBP7ISbz/PhmMH/Mf1AQHpqQQAj43MB6D9N7ja8RWV5+VWKFL+CkfCXhyY ge9CdmiKPyF3pZrUNyTE3OLmQqa0AllXTzbQHg8Az6oz1ibyJhqvbmleVYzOVTc9 qng6ZJxVein4L03NV6FuxD2MAX+R1MYqAJ5BIOJaN9Ki7zKe6vlbIVXXxvHMi2v/ xhacem7TWvw= =kFbv -----END PGP SIGNATURE----- --nV0Xx5nODoP5kWxY--
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