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Date:      Mon, 16 Jun 2008 18:16:12 +0300
From:      Manolis Kiagias <sonic2000gr@gmail.com>
To:        z.szalbot@lc-words.com
Cc:        freebsd-questions@freebsd.org
Subject:   Re: RAID 1 / disk error / Offline uncorrectable sectors
Message-ID:  <485683BC.5000700@gmail.com>
In-Reply-To: <4856820C.1050906@lc-words.com>
References:  <48565E7A.50807@lc-words.com>	<20080616085534.ca7524f8.wmoran@potentialtech.com>	<48567664.2070005@lc-words.com>	<48567B84.4020307@gmail.com>	<48567E81.4050007@lc-words.com>	<48567FA5.2060701@gmail.com> <485680A9.1080108@lc-words.com> <48568181.5000501@gmail.com> <4856820C.1050906@lc-words.com>

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Zbigniew Szalbot wrote:
> Hello,
>
> Manolis Kiagias:
>
>> Try
>>
>> atacontrol status ar0
>
> ar0: ATA RAID1 status: DEGRADED
>  subdisks:
>    0 ad10 ONLINE
>    1 ---- MISSING
>
>> Since you haven't actually removed/replaced ad12 you may simply have 
>> to continue with:
>>
>> atacontrol rebuild ar0
>
> I'll try it now. Thanks!
>
> Zbigniew Szalbot

Ok, ad12 is missing, so it seems it was detached but not reattached.

try again:

atacontrol attach ata6

If this succeeds,

atacontrol addspare ar0 ad12
atacontrol rebuild ar0

If attach fails, then someone at the remote site may have to  physically 
detach / reattach the disk in question.



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