I guess I am curious about how this functionality is viewed more generally / philosophically and what state is considered to be in. I wonder whether it is perceived to be good enough for production use, and whether it's expected to work as smoothly as it does under Illumos.
In my case I encountered situations where valid configurations from OI weren't supported in ZoL, but I remember coming to the conclusion that these limitations were already known and addressing them simply wasn't a priority at that time. Since this was some months ago the situation very may well have changed already!
The share support is one of the few things in ZoL that I do not actually use, so I cannot make a definitive statement on this topic. At present, the project does not have regression tests in the LLNL buildbot. The majority of the enabling work in this area was done by Turbo Fredriksson.
https://github.com/zfsonlinux/zfs/commits?author=FransUrbo
I would emailing the zfs-discuss mailing list with Turbo on CC to ask:
http://zfsonlinux.org/lists.html https://github.com/zfsonlinux/zfs/commits?author=FransUrbo
Additionally, I am aware of some SMB improvements by Turbo that are currently pending review. They are scheduled for inclusion into 0.6.4 provided that no issues are found during review:
https://github.com/zfsonlinux/zfs/issues/new
Please include information describing your distribution, the distribution release, your kernel version, the ZoL release and also the Samba version.