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Date:      Wed, 15 Dec 2010 17:16:21 +0200
From:      Andriy Gapon <avg@freebsd.org>
To:        Olivier Smedts <olivier@gid0.org>, "Vladislav V. Prodan" <universite@ukr.net>
Cc:        freebsd-current@freebsd.org, freebsd-geom@freebsd.org
Subject:   Re: Low speed disk subsystem after the upgrade 8.1-STABLE-201011 --> 9-CURRENT
Message-ID:  <4D08DBC5.30003@freebsd.org>
In-Reply-To: <AANLkTimwDePpdFZiaXS_5QM1W-wf%2BHh6Spcf907pud6%2B@mail.gmail.com>
References:  <4D08B21B.5090000@ukr.net> <4D08BC09.3000801@freebsd.org>	<4D08BE7D.2030700@ukr.net> <4D08CC18.7050908@ukr.net> <AANLkTimwDePpdFZiaXS_5QM1W-wf%2BHh6Spcf907pud6%2B@mail.gmail.com>

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on 15/12/2010 16:25 Olivier Smedts said the following:
> 2010/12/15 Vladislav V. Prodan <universite@ukr.net>:
>> 15.12.2010 15:11, Vladislav V. Prodan wrote:
>>
>>> Now try to attach a screenshot.
>>>
>>>
>>
>> http://img576.imageshack.us/i/dsc00563u.jpg/
> 
> ad6: TIMEOUT - READ_DMA retrying (1 retry left) LBA=8638372
> 
> Maybe installkernel/installworld copied files on bad clusters, they
> were previously bad but you notice only now that there are system
> files on them...

This indeed looks like a problem caused by disk.
There shouldn't have been the panic though ("bio_completed can't be greater than
bio_length").
It's a possible geom or ad driver problem.
What is your geom topology on this system?

Changing cc: from fs@ to geom@.

-- 
Andriy Gapon



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