Date: Sat, 26 Nov 2005 18:29:15 GMT From: Hans <h@matik.com.br> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/89597: uncorrectable ATA disc errors can be corrected with acpi disabled Message-ID: <200511261829.jAQITFuP047229@www.freebsd.org> Resent-Message-ID: <200511261830.jAQIU6hk039105@freefall.freebsd.org>
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>Number: 89597
>Category: kern
>Synopsis: uncorrectable ATA disc errors can be corrected with acpi disabled
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Nov 26 18:30:05 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Hans
>Release: 6.0-R
>Organization:
Infomatik
>Environment:
FreeBSD nb.matik.com.br 6.0-RELEASE FreeBSD 6.0-RELEASE #2: Sat Nov 26 16:10:23 BRST 2005 h@nb.matik.com.br:/usr/src/sys/i386/compile/anb i386
>Description:
after upgrading to 6.0RC1 and R I got HD errors like this
Nov 26 08:32:35 nb kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=67582740
Nov 26 08:32:35 nb kernel: g_vfs_done():ad0s3e[READ(offset=8286093312, length=16384)]error = 5
Nov 26 08:32:38 nb kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=67582740
Nov 26 08:32:38 nb kernel: g_vfs_done():ad0s3e[READ(offset=8286093312, length=16384)]error = 5
Nov 26 08:32:41 nb kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=1<ILLEGAL_LENGTH> LBA=67582740
Nov 26 08:32:41 nb kernel: g_vfs_done():ad0s3e[READ(offset=8286093312, length=16384)]error = 5
on several PCs with ATA discs after system crash.
This with new and used ones. Since the erros could not be corrected by fsck i changed them.
This PC is a Notebook and I found the damaged block in a file in a user dir so I could use the PC still as another user.
I was booting then with hint.acpi.0.disabled=1 and to my surprise fsck identified the above error as DUPs and corrected them perfectly. I enabled acpi afterwards and the disk is clean.
I repeated this on another machine with a previous "uncorrectable" error and could repair it the same way. Other 2 disks I unfortunatly kicked into the trash :(
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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