On Jun 10, 2009, at 1:21 PM, David Boyes wrote:
So you get the 5 minutes down to what? 3-4?
A little under 2, actually. Most of which is spent writing like
crazy to disk.
I've also been tinkering with the idea of creating the disk image in
storage and then writing a utility to write it out using full track
writes. I don't know if it would actually be any better than DDR (or
hey, write the input to the pipeable version of DDR...hmm), but it
seemed like it would be interesting to try.
You could also use the (undocumented, but stable since 5.1 so probably
not going anywhere in the near term) ECKDREST pipe stage used for
installation (there's a corresponding FBA version too). It's on MAINT
22CC or 2CC; the Install Quick Guide says which. The format of the
input is pretty trivially determinable by examining the part files on
the z/VM installation DVD.
This is kinda what I wanted to do for NOVSTART at one point, but I
never got around to actually *doing* it.
Adam
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