[Libtorrent-devel] rtorrent keeps re-downloading certain chunks forever

[Jari Sundell]

Chris TenHarmsel wrote:
> I have the new versions installed (not SVN, the released ones).  It's
> to the point where the file finishes and then rtorrent performs the
> hash check and I get this line for each file:
> 
> Inactive: Hash check on download completion found bad chunks, consider
> using "safe_sync".
> 
> Any ideas what I can do?

Well, I got these two in the wiki:


ReiserFS and 4GB files ¶

Downloading files larger than 4GB on ReiserFS (v3) may cause data beyond 
offset 232 bytes to be written to the start of the file. This will cause 
the client to enter a cycle of downloading the remaining data then 
checking the hash.


Lost data when writing to NFS on Linux <2.6.13 ¶

Apparently due to a bug in the NFS client and/or kernel itself for 2.6 
kernels before 2.6.13, data is lost when writing to an NFS share using 
mmap() and msync() with MS_ASYNC. While rtorrent will think the data has 
been written correctly, the data is never written to the NFS server due 
to this kernel bug, and hash checks will fail and rtorrent will upload 
bad data as soon as it disappears from the file cache.


If neither are applicable, what kernel, filesystem, etc are you using.

Rakshasa