Re: rsync on Cygwin ... possible problem

[Lapo Luchini <lapo at lapo dot it>]

Heitzso wrote:

> Hi Lapo,
>
> I was building up a synchronization mechanism for
> a distributed metadata environment and the scripts
> ran fine on Linux but tangled on Cygwin/rsync.
>
> Behavior is that the cygwin rsync blocks after
> some number of consecutive/sequential but rapid rsync
> commands, ?? 20 ?? 
> When I substitute scp (with appropriate change
> of parameters for scp) the scripts work fine
> on cygwin.
>
> Parameters using:
>
> rsync -e ssh --blocking-io --compress --ignore-times 
> scp -qBC
>
> I have no idea if the problem is rooted in:
> 	Win2K 
> 	cygwin (current)
> 	rsync port on cygwin
>
> Feel free to email me if you want the actual
> message.  I'm under a lot of pressure to get
> this out the door so don't have time to dig
> into much more than passing this flag on to 
> you.
>
> BTW, please do not treat this as a complaint,
> I'm very grateful that Cygwin exists and is
> available for us to use.  I'm just trying to
> help out by relaying information upstream.
>  
I know of the problem, but unfortunately in this period I have too few 
time to debug it extensively.
Someone else seems to have done it though:
http://sources.redhat.com/ml/cygwin/2002-09/msg01155.html
http://sources.redhat.com/ml/cygwin/2002-10/msg00296.html

In the first message there is an analysis that seems to indicate that is 
"cygwin's fault" but that there can be a patch do rsync itswelf to avoid 
the problem.
The second message contains a precompiled EXE with the patch included.

I had yet no time to study relevant cygwinsources to find a real "solution".

BTW: please use the ML for questions so that everyone can read it

Lapo


--
Lapo 'Raist' Luchini
lapo@lapo.it (PGP & X.509 keys available)
http://www.lapo.it (ICQ UIN: 529796)



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