Author: Matthew Ahrens <mahrens@delphix.com> Reviewed by: George Wilson <george@delphix.com> Reviewed by: Richard Elling <richard.elling@richardelling.com> Reviewed by: Steven Hartland <killing@multiplay.co.uk> Reviewed by: Don Brady <dev.fs.zfs@gmail.com> Approved by: Albert Lee <trisk@omniti.com> illumos/illumos-gate@81cd5c555f