Re: Thinking aloud.

On Sat, 20 Oct 2012, Nigel Cunningham wrote:

> Anyway, what I've been thinking about is that fact that each time we write the
> image, we write the complete image. Surely there must be a portion of the data
> that is exactly the same as last time, and therefore shouldn't need to be
> written again.

> My initial thought is to use SHA1 checksums to determine what pages have
> changed ....

> What do you think?

Heh. "git format-patch -1 ./hib-image && cp -a ./hib-image /dev/<swap>!" :) :)

But seriously, one issue that springs to mind is disk layout would have
to have not changed at all, else every block could look "changed" anyway.

	-Kenny

-- 
Kenneth R. Crudup  Sr. SW Engineer, Scott County Consulting, Los Angeles