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Date:      Fri, 16 Nov 2007 18:17:41 -0600
From:      Kevin Kinsey <kdk@daleco.biz>
To:        Douglas Rodriguez <dcr@physics.utah.edu>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Failing Drive
Message-ID:  <473E3325.7000800@daleco.biz>
In-Reply-To: <Pine.GSO.4.21.0711161456230.24135-100000@fusion.physics.utah.edu>
References:  <Pine.GSO.4.21.0711161456230.24135-100000@fusion.physics.utah.edu>

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Douglas Rodriguez wrote:
> I've been getting the following message repeating continuously:
> 
> ad1:FAILURE - READ_DMA status=51<READY, DSC, ERROR>
> 	error=1<ILLEGAL_LENGTH> LBA=216026367
> g_vfs_done():ad1s1[READ(offset = 110605467648, length = 16384)]error=5
> ad1:FAILURE - READ_DMA status=51<READY, DSC, ERROR>
> 	error=40<UNCORRECTABLE> LBA=216026367
> g_vfs_done():ad1s1[READ(offset = 110605467648, length = 16384)]error=5
> ad1:FAILURE - READ_DMA status=51<READY, DSC, ERROR>
>         error=1<ILLEGAL_LENGTH> LBA=216026367
> g_vfs_done():ad1s1[READ(offset = 110605467648, length = 16384)]error=5
> ....
> 
> The same thing repeats every so often.  What does this mean?  I've read
> other threads (Drives Dieing) about possibly shutting down dma or
> reinstalling the system, but is that the best solution to this kind of
> problem?


Backup, backup, backup ;-)
 
You'll need a Real Expert(tm) to help on the ILLEGAL_LENGTH error, but
I've seen UNCORRECTABLE plenty.  Keep in mind that it may cost some time
and energy to find out; apart from a bad disk, could be a bad disk *controller*.

I bought two new HDD's recently because of similar problems, but all of
them are now working fine on a new motherboard :-/

Sorry no help here :-/

Kevin Kinsey
-- 
Recursion: n. See Recursion.
		-- Random Shack Data Processing Dictionary



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