From owner-freebsd-current  Mon Dec 20  9:30:54 1999
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From: Andrew Gallatin <gallatin@cs.duke.edu>
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Date: Mon, 20 Dec 1999 12:29:51 -0500 (EST)
To: Soren Schmidt <sos@freebsd.dk>
Cc: freebsd-current@FreeBSD.ORG
Subject: Re: ATA: more Promise Ultra wedges
In-Reply-To: <199912191632.RAA22826@freebsd.dk>
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	<199912191632.RAA22826@freebsd.dk>
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Soren Schmidt writes:
 > It seems Andrew Gallatin wrote:
 > >=20
 > > S=F8ren,
 > >=20
 > > It looks like I spoke to soon when I said the world was safe for
 > > Promise Ultra users:
 > >=20
 > > ad3: ad_timeout: lost disk contact - resetting
 > > ata4: resetting devices .. ad3: HARD WRITE ERROR blk# 6594768ad3: =
DMA problem en
 > > countered, fallback to PIO mode
 > > ad3: DMA problem encountered, fallback to PIO mode
 > > done
 > > ad1: UDMA CRC READ ERROR blk# 10522095 retrying
 > > ad3: ad_timeout: lost disk contact - resetting
 > > ata4: resetting devices .. done
 >=20
 > Is the above all info, or is it snipped somehow, its looks a bit wie=
rd..

That was snipped directly from a serial console log. Now that I have
the machine rebooted, here are the syslog messages from
/var/log/messages:

Dec 17 17:01:44 waffle /kernel: ad3: ad_timeout: lost disk contact - re=
setting
Dec 17 17:01:44 waffle /kernel: ata4: resetting devices .. ad3: HARD WR=
ITE ERROR blk# 6594768ad3: DMA problem encountered, fallback to PIO mod=
e
Dec 17 17:01:44 waffle /kernel: ad3: DMA problem encountered, fallback =
to PIO mode
Dec 17 17:01:44 waffle /kernel: done
Dec 17 17:02:09 waffle /kernel: ad1: UDMA CRC READ ERROR blk# 10522095 =
retrying
Dec 17 17:02:14 waffle /kernel: ad3: ad_timeout: lost disk contact - re=
setting
Dec 17 17:02:14 waffle /kernel: ata4: resetting devices .. done

 > > BTW, I'd really like a tunable or some way to prevent a permanent
 > > fallback to PIO.  I'm more than willing to tolerate one hard error=
 per
 > > week or so on a disk which sees 10s of gigabytes of data read &
 > > written between errors. =20
 >=20
 > Hmm, I'll think about what we can do here...

Thanks!  That would be greatly appreciated.

Cheers,

Drew


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