Ocfs2 users - Aug 2017 - What is the overhead/disk loss of formatting an ocfs2 filesystem? (Again)

Hi

I found OCFS2 comes with a higher overhead than local fs.

A 5G disk formatted OCFS2 left 3.92G available. And a 161G one left 156G
available.

I found a same question four years ago:
https://oss.oracle.com/pipermail/ocfs2-users/2013-April/006015.html

But the answer is not a precise calculation.

Or without a calculation, which arguments of mkfs.ocfs2 affects the
overhead?

Filesystems formatted via:
'mkfs' '-t' 'ocfs2' '-b' '4K'
'-C' '1M' '-N' '16' '-F'
"--fs-features=noappend-dio" DLKDEV

Thanks,

-robin
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