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Date:      Fri, 1 Feb 2008 14:46:56 -0500
From:      Bill Moran <wmoran@potentialtech.com>
To:        "Kurt Buff" <kurt.buff@gmail.com>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: This has begun to annoy me...
Message-ID:  <20080201144656.2c33af82.wmoran@potentialtech.com>
In-Reply-To: <a9f4a3860802011140x5d50663bgfadcbaf351c95f6d@mail.gmail.com>
References:  <a9f4a3860802011140x5d50663bgfadcbaf351c95f6d@mail.gmail.com>

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In response to "Kurt Buff" <kurt.buff@gmail.com>:

> I've been getting this in my daily security email from one of my boxes
> for quite a while, and have been ignoring it, because of workload.
> 
> However, it's finally annoyed me enough to pursue it.
> 
> What would the significance of the following section be?
> 
> zsquid.mycompany.com kernel log messages:
> +++ /tmp/security.4blejPLW	Fri Feb  1 03:02:08 2008
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=4662143
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=113995359
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=112970015
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=4668319
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=4849151
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=115527359
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=113714335
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=113715199
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=4570911
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=42958719
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=113343327
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=117315327
> 
> It looks like disk write errors to me, but I'm not sure.
> 
> Thoughts?

Looks like a failing disk to me.

Depending on the importance of the data on that drive, make sure you're
getting backups and get a new drive on order.

If it's always done this, it could also be faulty or non-standard hardware
(such as the SATA controller).

-- 
Bill Moran
http://www.potentialtech.com



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