fastest raw device copy?
wojtek at wojtek.tensor.gdynia.pl
Fri Oct 31 06:08:07 PDT 2008
> In general, what you're doing is correct for a block copy. There is
> nothing (that I know of) which is faster; you're copying 500GB of data
> (including the unused portion -- you *did* ask for a block copy),
> and this takes a long time. Be patient.
> On the flip side, your blocksize (bs) there is quite high for no good
> reason. I'd pick something more like bs=64k or bs=128k. The default
> (512) is too small for what you want, but 10MBytes is silly.
should be big but less than drive's buffer, and be multiply of sector
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