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Date:      Wed, 16 Dec 2009 13:17:17 +0100
From:      Grzegorz Bernacki <gjb@semihalf.com>
To:        bebahu@gmail.com
Cc:        freebsd-arm@freebsd.org, RuiDC <ruidc@yahoo.com>
Subject:   Re: fetch data corruption on local fs
Message-ID:  <4B28CFCD.3000401@semihalf.com>
In-Reply-To: <4B28C608.1070802@gmail.com>
References:  <26803523.post@talk.nabble.com> <4B28C608.1070802@gmail.com>

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bebahu@gmail.com wrote:

> I have seen the same problem. Fetch is corrupting downloads to local 
> filesystems. You can try it on an NFS mount or mount your local fs with 
> "-o sync".
> 
> As i have seen there are n x 32bytes of corrupt chunks in the downloaded 
> file. I hope it correlate with something, but have no time to dig 
> deeper. Also note cp, scp does not corrupts data so fetch does something 
> alternatively.
> 

Hi,

32 bytes is a size of cache line, so probably this is a cache coherency 
issue. Please read mail below for details and workaround.

http://lists.freebsd.org/pipermail/freebsd-arm/2008-December/001423.html

Grzesiek





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