http://polarhome.com/service/man/?qf=zfs&tf=2&of=SmartOS&sf=1m
Az új verziókban van kis -r kapcsoló is:
-r Recursively send all descendant snapshots. This is similar to the -R flag, but information about deleted and renamed datasets is not included, and property information is only included if the -p flag is specified.
zfs verziót lehet ugrani?