Btrfs raid allocator

Hendrik Siedelmann
Tue, 06 May 2014 10:41:38 -0000

Hello all!

I would like to use btrfs (or anyting else actually) to maximize raid0
performance. Basically I have a relatively constant stream of data that
simply has to be written out to disk. So my question is, how is the
block allocator deciding on which device to write, can this decision be
dynamic and could it incorporate timing/troughput decisions? I'm willing
to write code, I just have no clue as to how this works right now. I
read somewhere that the decision is based on free space, is this still true?

Cheers
Hendrik
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