Date: Thu, 8 Apr 2004 08:52:33 -0700 (PDT) From: Doug Ambrisko <ambrisko@ambrisko.com> To: "Kenneth D. Merry" <ken@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: ICH5R SATA RAID? Message-ID: <200404081552.i38FqXAn028466@ambrisko.com> In-Reply-To: <20040408153936.GA16585@panzer.kdm.org>
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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. Thanks, Doug A.
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