On Friday 31 October 2008, Christoph Kukulies wrote:
> Ivan Voras schrieb:
> > Jeremy Chadwick wrote:
> >> On Fri, Oct 31, 2008 at 09:48:16AM +0100, Christoph Kukulies wrote:
> >>> What would be the fastest way to do that sector by sector copy? I'm
> >>> using dd right now,
> >>> dd if=/dev/ad0 of=/dev/da0 bs=10000000
> >> 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.
> > Not only that, but "10000000" isn't even correct - it needs to be a
> > multiple of sector size. Generally, using suffixes will do the right
> > thing:
> > dd if=/dev/ad0 of=/dev/da0 bs=1m
> OK, I understand that 10000000 isn't good, I just thought it wouldn't
> harm. But if it is a transfer rate killer then I'd better think of
> typing ^C now. The command is running for 6 hours now.
> An idea how I can check the current amount of transfered byed alongside
> the running dd command? Or watch the current i/o rate?
Press ^T. It will show you progress and I/O speed.
Pieter de Goeje
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