rsync 3.0.4 over ssh hanging on cygwin 1.7

Steven Hartland killing@multiplay.co.uk
Tue Nov 18 19:02:00 GMT 2008


rsync over ssh and cygwin don't play nice and likely never will. Either
avoid using rsync or use it in daemon mode avoiding ssh which is where
the problem really lies ( the interaction between rsync and ssh ).

A good alternative to cygwin for this is SFU but be aware that most
versions only support 32bit files so less than 2GB.

    Regards
    Steve

----- Original Message ----- 
From: "Fred Kemp" <c.f.kemp@reading.ac.uk>


> Good afternoon all,
> 
> Please excuse my cygwin newbie status if I have missed something  
> obvious.
> 
> Having resolved the "overly long file name" issue with rsync in cygwin  
> 1.5 by upgrading to version 1.7, I have hit a new problem, namely  
> rsync hanging midway through transfer. No errors are reported or  
> logged, nothing seems to be timing out, it just sits there  
> indefinitely. Re-running rsync will maybe do a couple more files then  
> hang again, and again, and again... Having read around tinternet, it  
> seems I am not completely alone in this problem, but I have yet to  
> find a solution that works for me. Briefly:
> 
> I have set up ssh-keyless authentication between my server (OsX  
> 10.5.5, rsync 3.0.4, OpenSSH 5.1p1) and a dozen or so PC's running  
> XPsp2 (cygwin 1.7,  rsync 3.0.4, OpenSSH 5.1p1) and use rsync to  
> mirror user directories on the PC's to my server, as follows:
> 
> rsync --verbose --progress --stats --rsh=/usr/bin/ssh --archive \
> Administrator@clientPC:"/cygdrive/c/Documents\ and\ Settings/ 
> userdirectory/" /Users/userdirectory/
> 
> This is in effect identical to the method I use to mirror data between  
> two OsX servers, where it can happily handle several terabytes of data  
> and millions of files. I have tried rsyncing individual subdirectories  
> in a userdirectory and that works fine but still it hangs when the  
> whole directory is tried again. Similarly, one or two of the smaller  
> user directories (around 15,000 files and 35Gb data) work fine. Over  
> around 30,000 files seems to be where I have the problem...
> 
> What is really strange is that if I run the rsync from the client PC  
> to the server, it works fine, and subsequent rsyncs from the server  
> also work fine (presumably since hardly any files have changed)...
> 
> At this stage I am somewhat stumped and would appreciate any pointers  
> the gurus can give, even as to whether this is believed to be an  
> rsync, sshd or underlying cywin issue... Very happy to provide further  
> info as required, or to be shot down in flames should I have done  
> something stupid! ;-)
> 
> Thanks in advance,
> 
> Fred.
> 
> 
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