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From: Doug Ambrisko <ambrisko@ambrisko.com>
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To: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk>
Date: Wed, 23 Jun 2004 19:01:17 -0700 (PDT)
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cc: freebsd-scsi@freebsd.org
cc: Maxim Sobolev <sobomax@portaone.com>
Subject: Re: HostRaid support on FreeBSD
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Søren Schmidt writes:
| Reading the metadata off the disks and using that info to access a RAID 
| array is easy and can be had even without docs in a few hours. Writing 
| back the metadata in case of failures etc to retain sanity of the array 
| is "somewhat" more difficult. Actually I'm working with this currently 
| for new formats for ata-raid and its not trivial to get right.

Of which we've done the Intel 2 drive format read, write deal with 
broken mirrors etc.  Writing and dealing with broke mirrors was harder
and can lead to breaking the Intel RAID BIOS code :-(

It's available in our -stable ata SATA patches that have been updated to
4.10-RELEASE.

Doug A.