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Date:      Tue, 24 Jul 2012 15:10:35 -0600 (MDT)
From:      Warren Block <wblock@wonkity.com>
To:        dweimer <dweimer@dweimer.net>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: Disk Errors
Message-ID:  <alpine.BSF.2.00.1207241502440.62203@wonkity.com>
In-Reply-To: <d65bfc394e4b31d92bb6ab9e8d220d16@dweimer.net>
References:  <d65bfc394e4b31d92bb6ab9e8d220d16@dweimer.net>

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On Tue, 24 Jul 2012, dweimer wrote:

> Just curious, I am sure the likely issue is a bad disk, but I thought there 
> might be a chance this could be caused by possibly by something else.
>
> I have three 1TB disks I use for backup, two of them are Western Digital 
> drives I bought specifically for this purpose.  One is a Seagate drive that 
> came out of a barebones PC that I replaced with a couple smaller drives in a 
> stripe to gain performance.  I use the drives in an external SATA dock, using 
> geom eli encryption, the western digital drives give me no problems, but the 
> seagate drive gives me a lot of the following errors under load.
>
> 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

There are more than a few problem reports on the net concerning that 
drive, even on Seagate's own forums.  Both hardware problems and 
firmware problems.  Your later post says you have firmware version CC46, 
and Seagate has an update to CC49.  That's worth a try.
http://knowledge.seagate.com/articles/en_US/FAQ/213891en?language=en_US



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