5818 zfs {ref}compressratio is incorrect with 4k sector size
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@81cd5c555f505484180a62ca5a2fbb00d70c57d6