[plug] what command does the same thing as robocopy /mir?

Patrick Coleman blinken at gmail.com
Sat Mar 3 23:34:03 WST 2007


On 3/3/07, sothisistheinternet <sothisistheinternet at gmail.com> wrote:
>
<snip>
>
> Any idea why rsync -avz --delete /pub/share1 /mnt/usbdrive1 is so incredibly
> slow? It takes longer to run than just reformatting the 320GB USB drive and
> copying the data from the /pub/share1 directory (260GB) back to it!

The -z option compresses the data with gzip as it copies, which is
designed to help over network links. If rsync isn't intelligent enough
to notice it's doing a local copy and so compression will be a bad
idea, then turning compression on will slow the copy down a huge
amount.

-Patrick



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