[ceph-users] EC K + M Size

Ashley Merrick singapore at amerrick.co.uk
Sat Nov 3 01:11:39 PDT 2018


Hello,

Tried to do some reading online but was unable to find much.

I can imagine a higher K + M size with EC requires more CPU to re-compile
the shards into the required object.

But is there any benefit or negative going with a larger K + M, obviously
their is the size benefit but technically could it also improve reads due
to more OSD's providing a smaller section of the data required to compile
the shard?

Is there any gotchas that should be known for example going with a 4+2 vs
10+2

Thanks
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