zfs set sharenfs='V4: / -sec=sys grumpy.cis.uoguelph.ca' zpool/export_this # cat zfs/exports # !!! DO NOT EDIT THIS FILE MANUALLY !!! /export_this V4: / -sec=sys grumpy.cis.uoguelph.ca Where the line must start with V4: to be a valid line.
Yes, the "V4:" exports line needs to be manually put in /etc/exports. Note that it does not export any file system, so you also need a line like: /export_this -sec=sys grumpy.cis.uoguelph.ca either in /etc/exports or generated from the sharenfs property by setting it without the "V4: /" component in it. Call it a bug or a feature, but since the "V4:..." line does not refer to any file system, it does not work for sharenfs. I doubt this will ever change. (Also note that both /etc/exports and /etc/zfs/exports are used by mountd when started via the rc.d scripts. See /etc/rc.d/mountd.)