[Mldonkey-bugs] [Bug #3339] md4's of a file can become inconsistent when recovering temp

[nobody]

=================== BUG #3339: LATEST MODIFICATIONS ==================
http://savannah.nongnu.org/bugs/?func=detailbug&bug_id=3339&group_id=1409

Changes by: Markus Hitter <address@hidden>
Date: Sat 04/26/2003 at 22:15 (GMT)

------------------ Additional Follow-up Comments ----------------------------
To investigate further, I replaced the contents of a partially downloaded file 
with rubbish. File size and name still the same. Then, after deleting 
files.ini* and shared_* again a temp_recovery.

After some time with disk activity but without noticeable download, four chunks 
were marked as being finished (light blue in the web GUI). This is clearly 
wrong.



=================== BUG #3339: FULL BUG SNAPSHOT ===================


Submitted by: hitterm                 Project: mldonkey, a free e-Donkey client
Submitted on: Sat 04/26/2003 at 20:09
Category:  Core                       Severity:  5 - Major                  
Bug Group:  None                      Resolution:  None                     
Assigned to:  None                    Status:  Open                         
Release:  None                        Release:  2.04rc3                     
Platform Version:  Mac OS X Jaguar    Binaries Origin:  None                

Summary:  md4's of a file can become inconsistent when recovering temp

Original Submission:  Today, a download messed up and a bad file were comitted 
for sharing. The file is bad, the md4 sum and the filename differ. To fix the 
issue, I deleted all .ini files and recovered temp.

After some minutes, all chunks are marked as good, apparently without any 
actual download and the file is marked for commit again.

Trying to debug, I calculated and compared the md4 sums of each chunk by hand 
and found the same numbers listed in files.ini. The md4 sum of the whole file 
in files.ini fits the file name and the value I get from a seach in the 
network, but doesn't fit the actual calculated checksum of the file.

Since it's impossible to mark single files or even single chunks for a 
re-comparison with what's on the network, it's hard to find out what's wrong. 
"Verify chunks" in the Web GUI doesn't show any sign of activity.

Follow-up Comments
*******************

-------------------------------------------------------
Date: Sat 04/26/2003 at 22:15       By: hitterm
To investigate further, I replaced the contents of a partially downloaded file 
with rubbish. File size and name still the same. Then, after deleting 
files.ini* and shared_* again a temp_recovery.

After some time with disk activity but without noticeable download, four chunks 
were marked as being finished (light blue in the web GUI). This is clearly 
wrong.


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http://savannah.nongnu.org/bugs/?func=detailbug&bug_id=3339&group_id=1409