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SubjectRe: torrent hash failures since 3.9.0-rc1
On 2013.03.11 at 18:18 +0100, Markus Trippelsdorf wrote:
> I get hash failures on "completed" torrents since 3.9.0-rc1 (Linux 3.8
> seems to be fine). What happens is that the torrents apparently complete
> successfully. After reboot however the hash check fails and there are
> missing (or corrupted) chunks. I've tested this with two different
> clients (rtorrent and aria2c) and both are affected. So I think this
> might be a filesystem issue.
> /dev/sda ext4 1.4T 666G 640G 51% /var
> /dev/sda on /var type ext4 (rw,noatime,data=ordered)
> I use ECC memory (and there is nothing in the logs).

To reproduce this issue just do the following:

% wget
% rtorrent linuxmint-12-gnome-cd-nocodecs-64bit.iso.torrent
(Wait until the torrent finishes)
% sudo echo 3 > /proc/sys/vm/drop_caches
(Rehash the torrent (Ctrl-R))
The torrent doesn't rehash successfully and a few hunks are
missing/corrupted and need to be downloaded again.


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