On 12/01/18 18:37, Emmanuel Florac wrote:
Or could it simply switch over to optimising for the new geometry,
accept the fact that the reshape will have caused hotspots, and every
time it rewrites (meta)data, it adjusts it to the new geometry to
reduce/remove hotspots over time?
I suppose it's doable but not sufficiently a prominent use case to
bother much.
Stick it on the "nice to have when somebody gets round to it" list :-)
But it at least should get put on the list ...
I'll get round to writing all this up soon, so the wiki will try and
persuade people that resizing arrays is not actually the brightest of
ideas.
The trouble is lack of people talking to each other and thinking that
they can rely on the "do one job and do it well". Except of course that
you can't square a circle ... :-)
But this really is stuff that needs to be on the wiki, and it's stuff
the MD and filesystem people don't talk about with each other, I expect :-(
Cheers,
Wol
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