Add back iostat -y or -w descriptions

The iostat -y and -w descriptions were left in cda0317e,
get them back.

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Melikov <mail@gmelikov.ru>
Closes #7479
Closes #7483

diff --git a/man/man8/zpool.8 b/man/man8/zpool.8
index 6d7c2271cd2c1b6f2acdf56b396cafcae8d7dd58..46e531e2216cf11d762c8378e9778856dbf63006 100644 (file)
--- a/man/man8/zpool.8
+++ b/man/man8/zpool.8
@@ -24,10 +24,10 @@
 .\" Copyright 2016 Nexenta Systems, Inc.
 .\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
 .\" Copyright (c) 2017 Datto Inc.
 .\" Copyright 2016 Nexenta Systems, Inc.
 .\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
 .\" Copyright (c) 2017 Datto Inc.

-.\" Copyright (c) 2017 George Melikov. All Rights Reserved.
+.\" Copyright (c) 2018 George Melikov. All Rights Reserved.

 .\" Copyright (c) 2017 Datto Inc.
 .\"
 .\" Copyright (c) 2017 Datto Inc.
 .\"

-.Dd June 28, 2017
+.Dd April 27, 2018

 .Dt ZPOOL 8 SMM
 .Os Linux
 .Sh NAME
 .Dt ZPOOL 8 SMM
 .Os Linux
 .Sh NAME


@@ -1554,7 +1554,24 @@ block device.
 Verbose statistics Reports usage statistics for individual vdevs within the
 pool, in addition to the pool-wide statistics.
 .It Fl y
 Verbose statistics Reports usage statistics for individual vdevs within the
 pool, in addition to the pool-wide statistics.
 .It Fl y

+Omit statistics since boot.
+Normally the first line of output reports the statistics since boot.
+This option suppresses that first line of output.

 .It Fl w
 .It Fl w

+Display latency histograms:
+.Pp
+.Ar total_wait :
+Total IO time (queuing + disk IO time).
+.Ar disk_wait :
+Disk IO time (time reading/writing the disk).
+.Ar syncq_wait :
+Amount of time IO spent in synchronous priority queues.  Does not include
+disk time.
+.Ar asyncq_wait :
+Amount of time IO spent in asynchronous priority queues.  Does not include
+disk time.
+.Ar scrub :
+Amount of time IO spent in scrub queue. Does not include disk time.

 .It Fl l
 Include average latency statistics:
 .Pp
 .It Fl l
 Include average latency statistics:
 .Pp