Re: data corruption with ext4 (from 2.6.27.4) exposed by rtorrent

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On Mon, Nov 3, 2008 at 2:40 PM, Theodore Tso <tytso@xxxxxxx> wrote:
> On Mon, Nov 03, 2008 at 12:42:11PM +0000, Roc Valles wrote:
>> Some person already reported this. I'm having the same problem.
>> http://marc.info/?l=linux-ext4&m=122557056518246&w=2
>>
>> rtorrent is a bittorrent client that makes heavy use of mmap instead
>> of read/write to avoid needless duplication of data. It has exposed
>> other bugs in the past (mmap bug in 2.6.19).
>> http://libtorrent.rakshasa.no
>> Downloading a big torrent (>2GB) with rtorrent triggers it more times
>> than not. The bigger the torrent, the higher the likeliness of
>> failure. When the torrent is finished, if a hash check is forced by
>> pressing control-r on the torrent, some blocks will fail.

I have set up a debug torrent at:
http://www.demonoid.com/files/details/1676328/?rel=1225725960

It contains four identical files that were generated with:
dd if=/dev/zero of=zero.test0 count=1M

My upload speed is limited (512 kbit/s), but I hope this may help.
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