On Mon, Feb 26, 2018 at 5:09 AM Wolfgang Lendl <wolfgang.lendl@xxxxxxxxxxxxxxxx> wrote:
hi,
I have no idea what "w=8" means and can't find any hints in docs ...
maybe someone can explain
ceph 12.2.2
# ceph osd erasure-code-profile get ec42
crush-device-class=hdd
crush-failure-domain=host
crush-root=default
jerasure-per-chunk-alignment=false
k=4
m=2
plugin=jerasure
technique=reed_sol_van
w=8
I think that's exposing the "word" size it uses when doing the erasure coding. It is technically configurable but I would not fuss about it.
-Greg
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