[TriLUG] Re: Re: making a disk image

[James Manning]

[John F Davis]
> Ok, but is it gzipping 1 GB to ~500MB?

Believe it or not, that'll depend on the input data :)  I'd say 2:1 is
prob. a safe bet, but if you disk isn't very full (lots of sectors that
are all zeroes, perhaps) then the compression could be better.  For the
last cluster I did, I just attached 1 source and 6 target drives to
one chain and (scary enough) did parallel dd's.  It worked out nicely
since it could physical-read (into the page cache) once and write 6x,
but I had a lot of machines to do.
-- 
James Manning <jmm at sublogic.com>
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