Compress and store the image of a disk over the network

dd if=<device> | pv | nc <target> <port>

Create an image of "device" and send it to another machine through the network ("target" and "port" sets the ip and port the stream will be sent to), outputting a progress bar On the machine that will receive, compress and store the file, use: nc -l -p <port> | 7z a <filename> -si -m0=lzma2 -mx=9 -ms=on Optionally, add the -v4g switch at the end of the line in order to split the file every 4 gigabytes (or set another size: accepted suffixes are k, m and g). The file will be compressed using 7z format, lzma2 algorithm, with maximum compression level and solid file activated. The compression stage will be executed on the machine which will store the image. It was planned this way because the processor on that machine was faster, and being on a gigabit network, transfering the uncompressed image wasn't much of a problem.

By: quitaiskiluisf

2012-01-27 18:37:36

dd dd nc pv 7z

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What Others Think

I would prefer to compress before I send.

Mozai · 638 weeks and 1 day ago

You could compress before sending the stream over the net, it depends on which side (sender or receiver) has better CPU and if the network is a bottleneck

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huzam151 · 10 hours ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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