Date: Thu, 08 Apr 2004 18:28:53 +0200 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk> To: Doug Ambrisko <ambrisko@ambrisko.com> Cc: freebsd-current@freebsd.org Subject: Re: ICH5R SATA RAID? Message-ID: <40757DC5.8050300@DeepCore.dk> In-Reply-To: <200404081552.i38FqXAn028466@ambrisko.com> References: <200404081552.i38FqXAn028466@ambrisko.com>
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Doug Ambrisko wrote: > Kenneth D. Merry writes: > | On Wed, Apr 07, 2004 at 07:15:09 -0700, Doug Ambrisko wrote: > | > Kenneth D. Merry writes: > | > | On Tue, Apr 06, 2004 at 20:29:10 -0700, Doug Ambrisko wrote: > | > | > I have a SuperMicro system that does the Intel "ICH5-R" RAID. > | > | > I should get inspired via the Linux code and see if I can add > | > | > that. So far I've haved setup the RAID but have turned on the ICH > | > | > flag. > | > | > | > | Adaptec HostRAID is software RAID. By software RAID, I mean that you only > | > | get BIOS support from the card for booting, and after that all of the RAID > | > | functionality is handled via the host OS. > | > | > | > | Some of their SCSI controllers include HostRAID support. e.g.: > | > | > | > | http://www.adaptec.com/worldwide/product/proddetail.html?sess=no&language=English+US&prodkey=ASC-39320A-R&cat=%2fTechnology%2fUltra320%2fNew+Ultra320+SCSI! > | > > | > The ICH stuff is not SCSI. There was no mention of Adaptec in the > | > manual for this motherboard. There were other SuperMicro boards that > | > had SCSI controllers on them but this one and the one I have do not. > | > They just have SATA ports that can do RAID. > | > | True, it is SATA, not SCSI. But the concept, and some of the software, is > | the same. It's pretty common in OEM deals for the actual vendor of the > | software/hardware to remain unknown. From what it looks like, the RAID > | functionality is all in software, as opposed to running on a chip embedded > | in the ICH5. > > I have working code to read the Intel ICH RAID meta data. I can boot > a FreeBSD root partition off a stripe. I looked at your page and it was > difficult to see the actual meta data definition. I might have missed > it since I was looking at the patch as a patch it didn't look the same at > all. Do you have a non-patch version of the meta data definition? > > Now I need to code up the "write out" of the configuration. Currently I just > use the configuration created by the BIOS. > > I should have this done today then I need to test failure modes. Then you are about as far as I was when I got sidetracked back when :) I have code to read adaptec / AMI / Intel meta data, but no writes yet, so it has stranded there as I hoped that the right solution would show up in GEOM somehow. However now that I'm close to having the Promise SX4/4000 going I realize that a GEOM solution wont fly for me anyways so things might get changed .... -- -Søren
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