From c87fe89db48233f1f53da2208de712c7d4b17c4e Mon Sep 17 00:00:00 2001
From: Andreas Bachlechner <62039342+bachandi@users.noreply.github.com>
Date: Mon, 11 Oct 2021 16:09:38 +0200
Subject: [PATCH] Add use_nan_for_missing_data to nvme.pm

---
 lib/nvme.pm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/nvme.pm b/lib/nvme.pm
index 4ea1c0a..0b63184 100644
--- a/lib/nvme.pm
+++ b/lib/nvme.pm
@@ -189,6 +189,7 @@ sub nvme_update {
 	my ($package, $config, $debug) = @_;
 	my $rrd = $config->{base_lib} . $package . ".rrd";
 	my $nvme = $config->{nvme};
+	my $use_nan_for_missing_data = lc($nvme->{use_nan_for_missing_data} || "") eq "y" ? 1 : 0;
 
 	my $temp;
 	my @smart;
@@ -200,8 +201,8 @@ sub nvme_update {
 		# values delimitted by ", " (comma + space)
 		my @dsk = split(', ', $nvme->{list}->{$k});
 		for($n = 0; $n < $max_number_of_hds; $n++) {
-			$temp = 0;
-			@smart = (0) x $max_number_of_smart_values_in_rrd;
+			$temp = $use_nan_for_missing_data ? (0+"nan") : 0;
+			@smart = ($use_nan_for_missing_data ? (0+"nan") : 0) x $max_number_of_smart_values_in_rrd;
 
 			if($dsk[$n]) {
 				my $d = trim($dsk[$n]);