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Date: Tue, 28 Oct 2008 12:04:49 +0100 (CET)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Jeremy Chadwick <koitsu@freebsd.org>
In-Reply-To: <20081028024143.GA37131@icarus.home.lan>
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Cc: Carl Voth <cvoth@telus.net>, freebsd-questions@freebsd.org
Subject: Re: gmirror slice insertion, "FAILURE - READ_DMA status=51<READY,
 DSC, ERROR>"
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>> error=40<UNCORRECTABLE> LBA=134802751
>
> Are you sure you don't have a bad hard disk?  This looks to be like a
> classic block/sector failure.  This does not appear to be the infamous
> famous "DMA timeout" problem, especially if this is the only error
> you're getting.

he can temporarity boot with hw.ata.ata_dma=0

but i think his drive failed.

>
>> I reinstalled FB7 to ad4, redid the /boot.config modification to make
>> ad6/gm0 bootable again and retried the insertion of ad4 into gm0. Exact
>> same error messages at exactly the same point with same consequences.


so IT IS FAILED drive!