diff --git a/check_iostat b/check_iostat
index e4f8978..106f8ca 100644
--- a/check_iostat
+++ b/check_iostat
@@ -171,38 +171,47 @@ close (IOSTAT);
 
 my $msg = "OK";
 my $status = 0;
+my @reasons;
 
 # Comparing the result and setting the correct level:
 if ($tps >= $warn_tps || $kbread >= $warn_read || $kbwritten >= $warn_written) {
    $msg = "WARNING";
+   push @reasons, "throughput";
    $status = 1;
 }
 
 if ($warn_iowait && $iowait >= $warn_iowait) {
    $msg = "WARNING";
+   push @reasons, "iowait";
    $status = 1;
 }
 
 if ($warn_util && $util >= $warn_util) {
    $msg = "WARNING";
+   push @reasons, "util";
    $status = 1;
 }
 
 if ($tps >= $crit_tps || $kbread >= $crit_read || $kbwritten >= $crit_written) {
    $msg = "CRITICAL";
+   push @reasons, "throughput";
    $status = 2;
 }
 
 if ($crit_iowait && $iowait >= $crit_iowait) {
    $msg = "CRITICAL";
+   push @reasons, "iowait";
    $status = 2;
 }
 
 if ($crit_util && $util >= $crit_util) {
    $msg = "CRITICAL";
+   push @reasons, "util";
    $status = 2;
 }
 
+$msg .= " (".join(",",@reasons).")";
+
 my $p_tps = $tps;
 if ($warn_tps) {
    $p_tps .= ";$warn_tps";
diff --git a/monitoring-plugins-sar-perf.changes b/monitoring-plugins-sar-perf.changes
index 8b19d71..c9dd452 100644
--- a/monitoring-plugins-sar-perf.changes
+++ b/monitoring-plugins-sar-perf.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Feb 28 15:41:17 CET 2020 - ro@suse.de
+
+- check_iostat: add reasons why state is warning or critical
+  to the output 
+
 -------------------------------------------------------------------
 Wed Dec 11 18:10:48 CET 2019 - ro@suse.de
 
diff --git a/monitoring-plugins-sar-perf.spec b/monitoring-plugins-sar-perf.spec
index cd4ad79..f6b06b9 100644
--- a/monitoring-plugins-sar-perf.spec
+++ b/monitoring-plugins-sar-perf.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package monitoring-plugins-sar-perf
 #
-# Copyright (c) 2019 SUSE LLC
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed