File Corruption

Stefan Nehlsen sn at ParlaNet.de
Mon Sep 12 15:41:17 GMT 2005


On Mon, Sep 12, 2005 at 03:04:50PM +0200, Stefan Nehlsen wrote:
> 
> I'm going to have a look at that now :-/

FIRST: I do not know if the corruption where really caused by rsync!

I had made a copy of the corrupt tree and use it know to find out
what kind of corruption ocurred.

I knew that there where problems installing packets with a i686
installation of SuSE 9.2. So I searched the suspicous content of the
first SuSE 9.2 DVD for *.i?86.rpm files for what rpm -K reported a
corruption.

I got a list of 101 broken files.

I compared them with their corresponding non broken versions by using
"diff -u" on textfiles created with "od -x".

A typical result (samba-3.0.7-5.i586.rpm) :
--- /tmp/ok.txt 2005-09-12 16:26:03.749124638 +0200
+++ /tmp/broken.txt     2005-09-12 16:26:04.112057459 +0200
@@ -51805,7 +51805,7 @@
 3126000 7c04 cfd3 0392 dbaa 2b3d 2412 be45 a3ac
 3126020 5825 a6de 9703 c8e7 ea18 17fe bb8b b41f
 3126040 1f3e 912e 19b7 f843 e64a 8d39 9509 031a
-3126060 093f b647 71af 8d62 1159 fbd0 3e30 e36b
+3126060 093f b647 71af 9d62 1159 fbd0 3e30 e36b
 3126100 24aa d78e bcf7 f25b f6a7 368e ff9b aa6f
 3126120 82dd 5119 f7b0 2ea8 ef43 75cc 8ccf 983e
 3126140 5bd7 e880 66b9 a97b 2a0f 28bf 3389 9be9

There where just very few single bits (117 in 101 files) that where changed in
the broken files.

I would be quite happy to I find solution for this mystery.

I hope it's not rsync!


cu, Stefan
-- 
Stefan Nehlsen | ParlaNet Administration | sn at parlanet.de | +49 431 988-1260
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