On Sat, 17 May 2014 14:44:04 +0100, Stroller wrote: > > a) Unlike other commands, pv will give you a progress bar so that you > > know how long your back up is taking. > > I've been using ddrescue recently - by default it seems to be faster > than plain old regular dd. > > I assume it must be possible to adjust the parameters (blocksize?) to > speed dd up, but I just want to run the command and not have to bother > tinkering.
Use the bs option. The default is 512, which is incredibly slow, bs=4k makes a substantial difference. However, I usually use dcfldd these days, whch works out the best block size to use and adds progress reporting. -- Neil Bothwick Never underestimate the bandwidth of a station wagon full of tapes!
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