From owner-freebsd-fs@freebsd.org  Fri Sep 11 19:04:02 2015
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From: Sean Eric Fagan <sef@Kithrup.COM>
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To: freebsd-fs@freebsd.org
Subject: chmod, freebsd10, zfs, and ACLs
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On FreeBSD 10, with ZFS, doing:

	touch fred ; setfacl -m user:www:full_set::deny fred ; getfacl fred ;
chmod g=u fred ; getfacl fred

does not work the way I expect:  to be precise, the chmod causes the user:www
ACE to go away.

This does not happen with posix1e ACLs.

I'm not sure if this is a ZFS issue, or a nfs4 acl issue.

wibblewobble?

Sean.