xfs: v4 or v5?

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Before adding/replacing new OSDs:

What version of xfs is preferred by ceph developers/testers now?
Time ago I move all to v5 (crc=1,finobt=1), it works, exclude
"logbsize=256k,logbufs=8" in 4.4. Now I see, v5 is default mode (xfsprogs &
kernel 4.5 at least).

I in doubts: make new OSDs old-style v4 + logbsize=256k,logbufs=8 (and remove v5
crc worloads) - increase linear performance (exclude rm/ls operations), or make
current default v5 to other benefits.

Are xfs v4 still mainstream for ceph?

PS I use too fresh "unstable" Gentoo ~amd64, so don't know some normal distros
reality...

-- 
WBR, Dzianis Kahanovich AKA Denis Kaganovich, http://mahatma.bspu.unibel.by/
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