From owner-freebsd-bugs  Tue Aug  7 16:40:15 2001
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Date: Tue, 7 Aug 2001 16:40:03 -0700 (PDT)
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From: kachun@newsguy.com (Kachun Lee)
Subject: Re: i386/29315: Promise ATA100 UDMA5 works incorrectly
Reply-To: kachun@newsguy.com (Kachun Lee)
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The following reply was made to PR i386/29315; it has been noted by GNATS.

From: kachun@newsguy.com (Kachun Lee)
To: cch@cc.kmu.edu.tw
Cc: freebsd-gnats-submit@FreeBSD.ORG, iedowse@maths.tcd.ie
Subject: Re: i386/29315: Promise ATA100 UDMA5 works incorrectly
Date: Tue, 07 Aug 2001 16:35:47 -0700

 In article <9kni83$11oj$1@FreeBSD.csie.NCTU.edu.tw>, you say...
 > I have done several tests by the script in attachment.
 > The results of these tests show that: (simply checked by "grep MD5
 > chkcp.txt")
 > 
 > 1. Intel ICH2 ATA driver (UDMA5 mode) + Seagate-ST320413A -> OK
 > please see:
 > http://cc.kmu.edu.tw/~cch/FreeBSD/ata/intel-ich2-udma5-hd.txt
 > 
 > 2.Promise ATA100 driver (UDMA5 mode) + IBM-DTLA-307030 -> FAIL
 > (It sometimes works correctly,  but incorrectly at most time.)
 > please see: http://cc.kmu.edu.tw/~cch/FreeBSD/ata/promise-udma5-hd.txt
 > [snip]
 
 I believe this was the same problem described in:
 
   http://www.FreeBSD.org/cgi/query-pr.cgi?pr=29045
 
 Plus, if the below article was correct...
 
 http://groups.google.com/groups?hl=en&safe=off&th=127674b89a58577c,7&seekm=PaV9
 7.311316%24XL1.5437943%40nlnews00.chello.com#p
 
 then the problem was with the IBM-DTLA drives. That was what I was afraid of... 
 we have quite a few of those drives.
 
 The google article stated the data was always corrupted at the end of a 0x1000 
 block. Will that offer some insight to the problem? It will be nice there is a 
 work around beside running the drives at U33. I send an email to IBM harddrive 
 support and see if they reply.
 
 Regards
 

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