bug report: errors in file transfer

[Eric Whiting]

Yes you should be concerned about this problem.

I suggest these things:

1. Try running without -z. Some versions of rsync (2.5.4?) had a libz
bug.

2. Better yet, upgrade both sides to 2.5.5 and retry.

3. Make sure your solaris box has the latest NFS patches.

eric



Michael Lachmann wrote:
> 
> Hi!
> I just encountered a serious problem with rsync.
> 
> I used rsync to copy a big directory between two computers. The source
> machine was a sun, the destination was a linux box. The destination
> directory did not exist before the copy started.
> 
> I used the following command to copy the directory over:
> 
> rsync -aSz source_machine:projects/ projects2
> 
> because I was somewhat paranoid, I checked if all files were transferred
> correctly using the following command:
> find . -not -type d -exec cksum \{\} \; |sort +2 >/tmp/w
> 
> which was issued on both the source and the destination machines. Then I
> used 'diff -b ' to compare these two files. It turned out that some of the
> files transferred had a different checksum. When I manually checked if the
> files indeed differed, I found that they were not transferred correctly!
> 
> This means that rsync did not transfer all the files correctly. The file
> sizes were correct, but their contents differed.
> 
> I then tried to overcome the problem using
> 
> rsync -caSz ....
> 
> instead. This gave only one file that had mistakes. Then I tried
> 
> rsync -az ...
> 
> which still had errors.
> 
> With my current setup, this problem is repeatable. The files that have
> errors are usually big files.
> 
> Now, a bit about the setup:
> source is a sun, with the partition mounted over NFS from a disk-server.
> 
> destination is a linux box, with a partition of type ext3 on LVM,
>  debian sid.
> 
> source rsync version is:
> ---
> rsync  version 2.5.2  protocol version 26
> Copyright (C) 1996-2002 by Andrew Tridgell and others
> <http://rsync.samba.org/>
> Capabilities: 64-bit files, socketpairs, hard links, symlinks, batchfiles,
> no IPv6,
>               64-bit system inums, 64-bit internal inums
> --
> 
> destination rsync:
> --
> rsync  version 2.5.4  protocol version 26
> Copyright (C) 1996-2002 by Andrew Tridgell and others
> <http://rsync.samba.org/>
> Capabilities: 64-bit files, socketpairs, hard links, symlinks, batchfiles,
> IPv6,              64-bit system inums, 64-bit internal inums
> --
> 
> Since I am using rsync for most of my backups and file transfers, I am
> VERY worried about this problem. Am I doing anything wrong?
> 
>         Michael
> 
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