rsync - Apr 2015 - Two same rsync commands give different results on two debian mirrors.

Hi all,

See the following commands:

___________________________

$ rsync -rmnv -f +_README -f -_* ftp.is.co.za::mirror/ftp.debian.org/
ftp.us.debian.org/debian

[snipped]

receiving file list ... done

sent 23 bytes  received 9 bytes  1.42 bytes/sec
total size is 0  speedup is 0.00 (DRY RUN)

$ rsync -rmnv -f +_README -f -_* ftp.cn.debian.org::debian

[snipped]

receiving file list ... done
drwxr-xr-x          4,096 2015/04/14 11:34:19 .
-rw-rw-r--          1,370 2015/01/10 18:21:28 README

sent 47 bytes  received 1,389 bytes  574.40 bytes/sec
total size is 1,370  speedup is 0.95 (DRY RUN)
_________________________

Why the same rsync commands give different results on the above two debian 
mirrors?  The first one failed to find anything even the README exists, 
while the second one succeed for the job.

Any hints on this issue? 

Regards
-- 
.: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :.

On Tue 14 Apr 2015, Hongyi Zhao wrote:
> 
> See the following commands:
> 
> ___________________________
> 
> $ rsync -rmnv -f +_README -f -_* ftp.is.co.za::mirror/ftp.debian.org/
> ftp.us.debian.org/debian
> 
> [snipped]
> 
> receiving file list ... done
> 
> sent 23 bytes  received 9 bytes  1.42 bytes/sec
> total size is 0  speedup is 0.00 (DRY RUN)
> 
> $ rsync -rmnv -f +_README -f -_* ftp.cn.debian.org::debian
> 
> [snipped]
> 
> receiving file list ... done
> drwxr-xr-x          4,096 2015/04/14 11:34:19 .
> -rw-rw-r--          1,370 2015/01/10 18:21:28 README
> 
> sent 47 bytes  received 1,389 bytes  574.40 bytes/sec
> total size is 1,370  speedup is 0.95 (DRY RUN)
> _________________________
> 
> Why the same rsync commands give different results on the above two debian 
> mirrors?  The first one failed to find anything even the README exists, 
> while the second one succeed for the job.
The contents of those locations is entirely different, which becomes
obvious if you simply run:

$ rsync ftp.is.co.za::mirror/ftp.debian.org/
$ rsync ftp.cn.debian.org::debian

If you want the same tree, use
ftp.is.co.za::mirror/ftp.debian.org/ftp.us.debian.org/debian/ for the
first location.


Paul

On Tue, 14 Apr 2015 09:32:10 +0200, Paul Slootman wrote:
> On Tue 14 Apr 2015, Hongyi Zhao wrote:
>> 
>> See the following commands:
>> 
>> ___________________________
>> 
>> $ rsync -rmnv -f +_README -f -_* ftp.is.co.za::mirror/ftp.debian.org/
>> ftp.us.debian.org/debian
Please see the above line including the part of line-wrapping.  I've used 
the correct rsync tree just as you have noted in the following.
>> 
>> [snipped]
>> 
>> receiving file list ... done
>> 
>> sent 23 bytes  received 9 bytes  1.42 bytes/sec total size is 0 
>> speedup is 0.00 (DRY RUN)
>> 
>> $ rsync -rmnv -f +_README -f -_* ftp.cn.debian.org::debian
>> 
>> [snipped]
>> 
>> receiving file list ... done drwxr-xr-x          4,096 2015/04/14
>> 11:34:19 .
>> -rw-rw-r--          1,370 2015/01/10 18:21:28 README
>> 
>> sent 47 bytes  received 1,389 bytes  574.40 bytes/sec total size is
>> 1,370  speedup is 0.95 (DRY RUN)
>> _________________________
>> 
>> Why the same rsync commands give different results on the above two
>> debian mirrors?  The first one failed to find anything even the README
>> exists, while the second one succeed for the job.
> 
> The contents of those locations is entirely different, which becomes
> obvious if you simply run:
> 
> $ rsync ftp.is.co.za::mirror/ftp.debian.org/
> $ rsync ftp.cn.debian.org::debian
> 
> If you want the same tree, use
> ftp.is.co.za::mirror/ftp.debian.org/ftp.us.debian.org/debian/ for the
> first location.
No, I've tried this tree in my above post.  Why do you said I have used a 
wrong rsync direcory tree.  See my above notes for detail.

In fact, the issue I meet is as follows, see the following for detail: 

1- If I append the `/' in the end of the tree, I'll succeed:

werner at debian:~$ rsync -rmnv -f +_README -f -_* ftp.is.co.za::mirror/
ftp.debian.org/ftp.us.debian.org/debian/
[snipped]
receiving file list ... done
drwxr-xr-x          4,096 2015/04/13 11:18:19 .
-rw-rw-r--          1,370 2015/01/10 18:21:28 README

sent 130 bytes  received 886 bytes  96.76 bytes/sec
total size is 1,370  speedup is 1.35 (DRY RUN)

2- If I don't use the `/' in the end of the tree, the rsync will fail to
retrieve anything:
  
werner at debian:~$ rsync -rmnv -f +_README -f -_* ftp.is.co.za::mirror/
ftp.debian.org/ftp.us.debian.org/debian
[snipped]
receiving file list ... done

sent 23 bytes  received 9 bytes  7.11 bytes/sec
total size is 0  speedup is 0.00 (DRY RUN)

But for the case when use of the following rsync server, both case will 
succeed:

werner at debian:~$ rsync -rmnv -f +_README -f -_* ftp.cn.debian.org::debian 
[snipped]
receiving file list ... done
drwxr-xr-x          4,096 2015/04/14 11:34:19 .
-rw-rw-r--          1,370 2015/01/10 18:21:28 README

sent 47 bytes  received 1,389 bytes  319.11 bytes/sec
total size is 1,370  speedup is 0.95 (DRY RUN)

werner at debian:~$ rsync -rmnv -f +_README -f -_* ftp.cn.debian.org::debian/
[snipped]

receiving file list ... done
drwxr-xr-x          4,096 2015/04/14 11:34:19 .
-rw-rw-r--          1,370 2015/01/10 18:21:28 README

sent 47 bytes  received 1,389 bytes  574.40 bytes/sec
total size is 1,370  speedup is 0.95 (DRY RUN)


Any hints on this issue?
Regards
> 
> 
> Paul
-- 
.: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :.