NEX-3729 KRRP changes mess up iostat(1M)
Reviewed by: Alek Pinchuk <alek.pinchuk@nexenta.com>
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>

@@ -4,11 +4,11 @@
 
 NAME
        iostat - report I/O statistics
 
 SYNOPSIS
-       /usr/bin/iostat  [-cCdDeEiImMnpPrstxXYz] [-l n] [-T u | d]
+       /usr/bin/iostat  [-cCdDeEiImMnpPfFrstxXYz] [-l n] [-T u | d]
         [disk]... [interval [count]]
 
 
 DESCRIPTION
        The iostat utility iteratively reports terminal, disk, and tape I/O

@@ -215,10 +215,20 @@
        -P
                    For each disk, report per-partition statistics only, no
                    per-device statistics.
 
 
+       -f
+                   Report ZFS-level statistics for ZFS pool and individual
+                   vdevs in addition to per-device statistics.
+
+
+       -F
+                   Report ZFS pool and individual physical vdevs statistics
+                   only, no per-device statistics.
+
+
        -r
                    Display data in a comma-separated format.
 
 
        -s