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Date:      Thu, 01 Jun 2000 11:34:01 -0700
From:      Kent Stewart <kstewart@3-cities.com>
To:        FreeBSD Hackers <freebsd-hackers@FreeBSD.ORG>
Subject:   UDMA-33 Error Messages
Message-ID:  <3936AC99.F091CDFE@3-cities.com>

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I had a power outage this morning and my 4.0-Stable system suddenly
started generating the following messages

Jun  1 09:38:55 opal /kernel: acd0: DVD-ROM <CREATIVEDVD5240E-1> at
ata1-master using PIO4
Jun  1 09:38:55 opal /kernel: Mounting root from ufs:/dev/ad0s3a
Jun  1 09:38:55 opal /kernel: ad0: UDMA ICRC READ ERROR blk# 0
retrying
Jun  1 09:38:55 opal last message repeated 2 times
Jun  1 09:38:55 opal /kernel: ad0: UDMA ICRC READ ERROR blk#
0ata0-master: WARNING: WAIT_READY active=ATA_ACTIVE_ATA
Jun  1 09:38:55 opal /kernel: falling back to PIO mode
Jun  1 09:38:55 opal /kernel: WARNING: / was not properly dismounted

This machine had never done this before and I noticed that the reboot
hadn't taken care of the dismount message. I had to manually fsck the
system. A single user boot produced much nastier messages and were
persistant. I rebooted three times before I did the manual fsck. The
boot to single user was the third boot. The reboot after the fsck
sequence produced the following boot stream cut and pasted from dmesg.

Jun  1 10:20:23 opal /kernel: ad0: 19541MB <Maxtor 52049U4>
[39703/16/63] at ata0-master using UDMA33
Jun  1 10:20:23 opal /kernel: ad1: 6679MB <Maxtor 87000D8>
[14475/15/63] at ata0-slave using UDMA33
Jun  1 10:20:23 opal /kernel: ad3: 12970MB <Maxtor 91360D8>
[26353/16/63] at ata1-slave using UDMA33
Jun  1 10:20:23 opal /kernel: acd0: DVD-ROM <CREATIVEDVD5240E-1> at
ata1-master using PIO4
Jun  1 10:20:23 opal /kernel: Mounting root from ufs:/dev/ad0s3a

I also noticed the "/kernel: WARNING: / was not properly dismounted"
in messages from people having ATA read error troubles on UDMA drives.

Kent

-- 
Kent Stewart
Richland, WA

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