ICH5R SATA RAID?
Doug Ambrisko
ambrisko at ambrisko.com
Thu Apr 8 08:52:34 PDT 2004
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.
More information about the freebsd-current
mailing list