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Date:      Wed, 13 Oct 2004 15:51:49 +0200
From:      =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk>
To:        miha@ghuug.org
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: ad0: FAILURE - WRITE_DMA
Message-ID:  <416D32F5.1090401@DeepCore.dk>
In-Reply-To: <200410131303.35695.miha@ghuug.org>
References:  <200410081937.15068.miha@ghuug.org> <200410091701.01987.miha@ghuug.org> <200410102330.26228.miha@ghuug.org> <200410131303.35695.miha@ghuug.org>

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Mikhail P. wrote:
> On Sunday 10 October 2004 23:30, Mikhail P. wrote:
>=20
>>On Saturday 09 October 2004 17:01, Mikhail P. wrote:
>>
>>>I also got another message off-list, where author suggested to play wi=
th
>>>UDMA values. I switched from UDMA100 to UDMA66. System's uptime is 12
>>>hours, and no timeouts so far.. but I'm quite sure they will get back =
in
>>>few days.
>>
>>1.5 days of uptime, running in UDMA66 changes nothing. Still getting
>=20
>=20
> Well, now those timeouts popped up on 5.3-BETA7 system with 4 IDE drive=
s..=20
> They start appearing with high disk activity.
> System had FreeBSD-4.7 prior to that, and has been rock solid for almos=
t a=20
> year. Drives have no problems, that's for sure (4.7 did not show up any=
=20
> timeouts, with uptime for months)..
>=20
> I don't know what to think - is ATA driver horribly broken in 5.x?

Well, thats not up to me to judge I guess, but have you tried to change=20
the tripping point for using 48Bit addressing as I suggested earlier ?
I cant reproduce this problem with any of the shelfmeters of ATA gear I=20
have here, so your help is needed or it will stay horribly broken :)

--=20

-S=F8ren




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