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Date:      Tue, 24 Jul 2012 19:50:11 +0200 (CEST)
From:      Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To:        dweimer <dweimer@dweimer.net>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: Disk Errors
Message-ID:  <alpine.BSF.2.00.1207241949070.2423@wojtek.tensor.gdynia.pl>
In-Reply-To: <d65bfc394e4b31d92bb6ab9e8d220d16@dweimer.net>
References:  <d65bfc394e4b31d92bb6ab9e8d220d16@dweimer.net>

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> Just curious, I am sure the likely issue is a bad disk, but I thought there

actually not that likely.

i had such problems, occuring randomly on many drives, and all problems 
disappeared after changing computer, with the same disk.

BTW i would recommend you to turn on AHCI driver

> ad4: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=817755328
> ad4: WARNING - WRITE_DMA48 UDMA ICRC error (retrying request) LBA=837397120
> ad4: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=879786112
> ad4: WARNING - WRITE_DMA48 UDMA ICRC error (retrying request) LBA=882931200
> ad4: WARNING - WRITE_DMA48 UDMA ICRC error (retrying request) LBA=890542016
> ad4: WARNING - WRITE_DMA48 UDMA ICRC error (retrying request) LBA=902767296
> ad4: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=904071296
>
> dmesg info about the drive at connection time:
> ad4: 953869MB <Seagate ST31000528AS CC46> at ata2-master UDMA100 SATA 3Gb/s
>
> dmesg info about one of the western digital drives:
> ad4: 953869MB <WDC WD10EARS-00Y5B1 80.00A80> at ata2-master UDMA100 SATA 
> 3Gb/s
>
> Before I scrap the drive I just wanted to see if anyone could either say for 
> sure its hardware, or if something else could possibly cause this.  I don't 
> suspect the controller, cable or dock as the problems would likely occur with 
> the western Digital drives as well if one of them were involved.
>
>
> -- 
> Thanks,
>   Dean E. Weimer
>   http://www.dweimer.net/
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