[Udpcast] Copy only occupied Block

Matheson, Edward B. (LARC-D318)[LITES] edward.b.matheson at nasa.gov
Wed Feb 2 20:58:57 CET 2011

I am working on a tool using udpcast that works kinda like ssh .. but allows one to 'cast' to multiple hosts.  I cheat and use 7zip to do the data reduction.  THis uses Windows XP and/or 7 .. and you have to have something on the windows side to tell it to start listening...  

For now you can run this on the receivers:

udp-receiver.exe --nokbd | 7z x -si -ttar -y -a{targetdir}

and then this on the sender

 7za a -ttar -so foo /sourcedir -r | udp-sender --full-duplex 

and that will handle the work for you.  Works well and is well tested.

 - b

PS > you have to use -ttar because 7z doesn't appear well supported for streaming .. particularly between different OS's 

On Feb 2, 2011, at 2:38 PM, Dominic Massé wrote:

> Hi everyone,
> I tried the udpcast, one problem is that the tool copy ALL the disk, even the empty space....
> for optimize the speed, is there a option to allow the copy of only the data on disk, and not all the disk ......
> I have a Windows 7 with about 9go of data on a 250go disk, and wants to copy only this 9go.
> thank you for your help !
> DM
> _______________________________________________
> Udpcast mailing list
> Udpcast at udpcast.linux.lu
> https://udpcast.linux.lu/cgi-bin/mailman/listinfo/udpcast

 - b

Branson Matheson
Experiment Specialist
NASA Langley Research Center Airspace & Traffic Operations Simulation Project
LaRC Information Technology Enhanced Services (LITES) 
Stinger Ghaffarian Technologies
130 Research Drive, Hampton, VA  23666 
(757) 864-9054 (Office) 
edward.b.matheson at nasa.gov

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