diff --git a/lib/nvme.pm b/lib/nvme.pm
new file mode 100644
index 0000000..95efa52
--- /dev/null
+++ b/lib/nvme.pm
@@ -0,0 +1,926 @@
+#
+# Monitorix - A lightweight system monitoring tool.
+#
+# Copyright (C) 2005-2021 by Jordi Sanfeliu <jordi@fibranet.cat>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+package nvme;
+
+use strict;
+use warnings;
+use Monitorix;
+use RRDs;
+use Cwd 'abs_path';
+use File::Basename;
+use Exporter 'import';
+our @EXPORT = qw(nvme_init nvme_update nvme_cgi);
+
+sub nvme_init {
+	my $myself = (caller(0))[3];
+	my ($package, $config, $debug) = @_;
+	my $rrd = $config->{base_lib} . $package . ".rrd";
+	my $nvme = $config->{nvme};
+
+	my $info;
+	my @ds;
+	my @rra;
+	my @tmp;
+	my $n;
+
+	my @average;
+	my @min;
+	my @max;
+	my @last;
+
+	foreach my $k (sort keys %{$nvme->{list}}) {
+		# values delimitted by ", " (comma + space)
+		my @dsk = split(', ', $nvme->{list}->{$k});
+		for(my $n = 0; $n < 8; $n++) {
+			if($dsk[$n]) {
+				my $d = trim($dsk[$n]);
+				$d =~ s/^\"//;
+				$d =~ s/\"$//;
+				$d =~ s/^(.+?) .*$/$1/;
+				next if -e $d;
+				logger("$myself: ERROR: invalid or inexistent device name '$d'.");
+				if(lc($nvme->{accept_invalid_nvme} || "") ne "y") {
+					logger("$myself: 'accept_invalid_nvme' option is not set.");
+					logger("$myself: WARNING: initialization aborted.");
+					return;
+				}
+			}
+		}
+	}
+
+	if(-e $rrd) {
+		$info = RRDs::info($rrd);
+		for my $key (keys %$info) {
+			if(index($key, 'ds[') == 0) {
+				if(index($key, '.type') != -1) {
+					push(@ds, substr($key, 3, index($key, ']') - 3));
+				}
+			}
+			if(index($key, 'rra[') == 0) {
+				if(index($key, '.rows') != -1) {
+					push(@rra, substr($key, 4, index($key, ']') - 4));
+				}
+			}
+		}
+		if(scalar(@ds) / 24 != keys(%{$nvme->{list}})) {
+			logger("$myself: Detected size mismatch between <list>...</list> (" . keys(%{$nvme->{list}}) . ") and $rrd (" . scalar(@ds) / 24 . "). Resizing it accordingly. All historical data will be lost. Backup file created.");
+			rename($rrd, "$rrd.bak");
+		}
+		if(scalar(@rra) < 12 + (4 * $config->{max_historic_years})) {
+			logger("$myself: Detected size mismatch between 'max_historic_years' (" . $config->{max_historic_years} . ") and $rrd (" . ((scalar(@rra) -12) / 4) . "). Resizing it accordingly. All historical data will be lost. Backup file created.");
+			rename($rrd, "$rrd.bak");
+		}
+	}
+
+	if(!(-e $rrd)) {
+		logger("Creating '$rrd' file.");
+		for($n = 1; $n <= $config->{max_historic_years}; $n++) {
+			push(@average, "RRA:AVERAGE:0.5:1440:" . (365 * $n));
+			push(@min, "RRA:MIN:0.5:1440:" . (365 * $n));
+			push(@max, "RRA:MAX:0.5:1440:" . (365 * $n));
+			push(@last, "RRA:LAST:0.5:1440:" . (365 * $n));
+		}
+		for($n = 0; $n < keys(%{$nvme->{list}}); $n++) {
+			push(@tmp, "DS:nvme" . $n . "_hd0_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd0_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd0_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd1_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd1_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd1_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd2_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd2_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd2_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd3_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd3_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd3_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd4_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd4_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd4_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd5_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd5_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd5_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd6_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd6_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd6_smart2:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd7_temp:GAUGE:120:0:100");
+			push(@tmp, "DS:nvme" . $n . "_hd7_smart1:GAUGE:120:0:U");
+			push(@tmp, "DS:nvme" . $n . "_hd7_smart2:GAUGE:120:0:U");
+		}
+		eval {
+			RRDs::create($rrd,
+			"--step=60",
+			@tmp,
+			"RRA:AVERAGE:0.5:1:1440",
+			"RRA:AVERAGE:0.5:30:336",
+			"RRA:AVERAGE:0.5:60:744",
+			@average,
+			"RRA:MIN:0.5:1:1440",
+			"RRA:MIN:0.5:30:336",
+			"RRA:MIN:0.5:60:744",
+			@min,
+			"RRA:MAX:0.5:1:1440",
+			"RRA:MAX:0.5:30:336",
+			"RRA:MAX:0.5:60:744",
+			@max,
+			"RRA:LAST:0.5:1:1440",
+			"RRA:LAST:0.5:30:336",
+			"RRA:LAST:0.5:60:744",
+			@last,
+			);
+		};
+		my $err = RRDs::error;
+		if($@ || $err) {
+			logger("$@") unless !$@;
+			if($err) {
+				logger("ERROR: while creating $rrd: $err");
+				if($err eq "RRDs::error") {
+					logger("... is the RRDtool Perl package installed?");
+				}
+			}
+			return;
+		}
+	}
+
+	# check dependencies
+	if(lc($nvme->{alerts}->{availspare_enabled} || "") eq "y") {
+		if(! -x $nvme->{alerts}->{availspare_script}) {
+			logger("$myself: ERROR: script '$nvme->{alerts}->{availspare_script}' doesn't exist or don't has execution permissions.");
+		}
+	}
+	if(lc($nvme->{alerts}->{percentused_enabled} || "") eq "y") {
+		if(! -x $nvme->{alerts}->{percentused_script}) {
+			logger("$myself: ERROR: script '$nvme->{alerts}->{percentused_script}' doesn't exist or don't has execution permissions.");
+		}
+	}
+
+	$config->{nvme_hist_alert1} = ();
+	$config->{nvme_hist_alert2} = ();
+	push(@{$config->{func_update}}, $package);
+	logger("$myself: Ok") if $debug;
+}
+
+sub nvme_update {
+	my $myself = (caller(0))[3];
+	my ($package, $config, $debug) = @_;
+	my $rrd = $config->{base_lib} . $package . ".rrd";
+	my $nvme = $config->{nvme};
+
+	my $temp;
+	my $smart1;
+	my $smart2;
+
+	my $n;
+	my $rrdata = "N";
+
+	foreach my $k (sort keys %{$nvme->{list}}) {
+		# values delimitted by ", " (comma + space)
+		my @dsk = split(', ', $nvme->{list}->{$k});
+		for($n = 0; $n < 8; $n++) {
+			$temp = 0;
+			$smart1 = 0;
+			$smart2 = 0;
+			if($dsk[$n]) {
+				my $d = trim($dsk[$n]);
+				$d =~ s/^\"//;
+				$d =~ s/\"$//;
+
+				# check if device name is a symbolic link
+				# e.g. /dev/nvme/by-path/pci-0000:07:07.0-scsi-0:0:0:0
+				if(-l $d) {
+					$d = abs_path(dirname($d) . "/" . readlink($d));
+					chomp($d);
+				}
+
+				open(IN, "smartctl -A $d --json |");
+				while(<IN>) {
+					if(/\"available_spare\"/) {
+						my @tmp = split(':', $_);
+						$tmp[1] =~ tr/,//d;
+						$smart1 = trim($tmp[1]);
+						chomp($smart1);
+					}
+					if(/\"percentage_used\"/) {
+						my @tmp = split(':', $_);
+						$tmp[1] =~ tr/,//d;
+						$smart2 = trim($tmp[1]);
+						chomp($smart2);
+					}
+					if(/\"temperature\"/) {
+						my @tmp = split(':', $_);
+						$tmp[1] =~ tr/,//d;
+						$temp = trim($tmp[1]) unless $temp;
+						chomp($temp);
+					}
+				}
+				close(IN);
+				if(!$temp) {
+					if(open(IN, "hddtemp -wqn $d |")) {
+						$temp = <IN>;
+						close(IN);
+					} else {
+						logger("$myself: 'smartctl' failed to get data from '$d' and 'hddtemp' seems doesn't exist.");
+					}
+				}
+				chomp($temp);
+			}
+			$rrdata .= ":$temp";
+			$rrdata .= ":$smart1";
+			$rrdata .= ":$smart2";
+
+			# nvme alert
+			if(lc($nvme->{alerts}->{availspare_enabled}) eq "y") {
+				$config->{nvme_hist_alert1}->{$n} = 0
+				if(!$config->{nvme_hist_alert1}->{$n});
+				if($smart1 <= $nvme->{alerts}->{availspare_threshold} && $config->{nvme_hist_alert1}->{$n} < $smart1) {
+					if(-x $nvme->{alerts}->{availspare_script}) {
+						logger("$myself: ALERT: executing script '$nvme->{alerts}->{availspare_script}'.");
+						system($nvme->{alerts}->{availspare_script} . " " .$nvme->{alerts}->{availspare_timeintvl} . " " . $nvme->{alerts}->{availspare_threshold} . " " . $smart1);
+					} else {
+						logger("$myself: ERROR: script '$nvme->{alerts}->{availspare_script}' doesn't exist or don't has execution permissions.");
+					}
+					$config->{nvme_hist_alert1}->{$n} = $smart1;
+				}
+			}
+			if(lc($nvme->{alerts}->{percentused_enabled}) eq "y") {
+				$config->{nvme_hist_alert2}->{$n} = 0
+				if(!$config->{nvme_hist_alert2}->{$n});
+				if($smart2 >= $nvme->{alerts}->{percentused_threshold} && $config->{nvme_hist_alert2}->{$n} < $smart2) {
+					if(-x $nvme->{alerts}->{percentused_script}) {
+						logger("$myself: ALERT: executing script '$nvme->{alerts}->{percentused_script}'.");
+						system($nvme->{alerts}->{percentused_script} . " " .$nvme->{alerts}->{percentused_timeintvl} . " " . $nvme->{alerts}->{percentused_threshold} . " " . $smart2);
+					} else {
+						logger("$myself: ERROR: script '$nvme->{alerts}->{percentused_script}' doesn't exist or don't has execution permissions.");
+					}
+					$config->{nvme_hist_alert2}->{$n} = $smart2;
+				}
+			}
+		}
+	}
+
+	RRDs::update($rrd, $rrdata);
+	logger("$myself: $rrdata") if $debug;
+	my $err = RRDs::error;
+	logger("ERROR: while updating $rrd: $err") if $err;
+}
+
+sub nvme_cgi {
+	my ($package, $config, $cgi) = @_;
+	my @output;
+
+	my $nvme = $config->{nvme};
+	my @rigid = split(',', ($nvme->{rigid} || ""));
+	my @limit = split(',', ($nvme->{limit} || ""));
+	my $tf = $cgi->{tf};
+	my $colors = $cgi->{colors};
+	my $graph = $cgi->{graph};
+	my $silent = $cgi->{silent};
+	my $zoom = "--zoom=" . $config->{global_zoom};
+	my %rrd = (
+	'new' => \&RRDs::graphv,
+	'old' => \&RRDs::graph,
+	);
+	my $version = "new";
+	my $pic;
+	my $picz;
+	my $picz_width;
+	my $picz_height;
+
+	my $u = "";
+	my $width;
+	my $height;
+	my @extra;
+	my @riglim;
+	my @IMG;
+	my @IMGz;
+	my $temp_scale = "Celsius";
+	my @tmp;
+	my @tmpz;
+	my @CDEF;
+	my $n;
+	my $n2;
+	my $e;
+	my $e2;
+	my $str;
+	my $err;
+	my @LC = (
+	"#FFA500",
+	"#44EEEE",
+	"#44EE44",
+	"#4444EE",
+	"#448844",
+	"#EE4444",
+	"#EE44EE",
+	"#EEEE44",
+	);
+
+	$version = "old" if $RRDs::VERSION < 1.3;
+	my $rrd = $config->{base_lib} . $package . ".rrd";
+	my $title = $config->{graph_title}->{$package};
+	my $IMG_DIR = $config->{base_dir} . "/" . $config->{imgs_dir};
+	my $imgfmt_uc = uc($config->{image_format});
+	my $imgfmt_lc = lc($config->{image_format});
+	foreach my $i (split(',', $config->{rrdtool_extra_options} || "")) {
+		push(@extra, trim($i)) if trim($i);
+	}
+
+	$title = !$silent ? $title : "";
+
+	if(lc($config->{temperature_scale}) eq "f") {
+		$temp_scale = "Fahrenheit";
+	}
+
+
+	# text mode
+	#
+	if(lc($config->{iface_mode}) eq "text") {
+		if($title) {
+			push(@output, main::graph_header($title, 2));
+			push(@output, "    <tr>\n");
+			push(@output, "    <td>\n");
+		}
+		my (undef, undef, undef, $data) = RRDs::fetch("$rrd",
+		"--resolution=$tf->{res}",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"AVERAGE");
+		$err = RRDs::error;
+		push(@output, "ERROR: while fetching $rrd: $err\n") if $err;
+		my $line1;
+		my $line2;
+		my $line3;
+		push(@output, "    <pre style='font-size: 12px; color: $colors->{fg_color}';>\n");
+		foreach my $k (sort keys %{$nvme->{list}}) {
+			# values delimitted by ", " (comma + space)
+			my @d = split(', ', $nvme->{list}->{$k});
+			for($n = 0; $n < scalar(@d); $n++) {
+				$str = sprintf(" NVME %d               ", $n + 1);
+				$line1 .= $str;
+				$str = sprintf(" Temp Availspare Percentused ");
+				$line2 .= $str;
+				$line3 .=      "----------------------";
+			}
+		}
+		push(@output, "     $line1\n");
+		push(@output, "Time $line2\n");
+		push(@output, "-----$line3\n");
+		my $line;
+		my @row;
+		my $time;
+		my $from;
+		my $to;
+		for($n = 0, $time = $tf->{tb}; $n < ($tf->{tb} * $tf->{ts}); $n++) {
+			$line = @$data[$n];
+			$time = $time - (1 / $tf->{ts});
+			push(@output, sprintf(" %2d$tf->{tc} ", $time));
+			$e = 0;
+			foreach my $k (sort keys %{$nvme->{list}}) {
+				# values delimitted by ", " (comma + space)
+				my @d = split(', ', $nvme->{list}->{$k});
+				for($n2 = 0; $n2 < scalar(@d); $n2++) {
+					$from = ($e * 8 * 3) + ($n2 * 3);
+					$to = $from + 3;
+					my ($temp, $availspare, $percentused) = @$line[$from..$to];
+					@row = (celsius_to($config, $temp), $availspare, $percentused);
+					push(@output, sprintf(" %4.0f %7.0f %7.0f ", @row));
+				}
+				$e++;
+			}
+			push(@output, "\n");
+		}
+		push(@output, "    </pre>\n");
+		if($title) {
+			push(@output, "    </td>\n");
+			push(@output, "    </tr>\n");
+			push(@output, main::graph_footer());
+		}
+		push(@output, "  <br>\n");
+		return @output;
+	}
+
+
+	# graph mode
+	#
+	if($silent eq "yes" || $silent eq "imagetag") {
+		$colors->{fg_color} = "#000000";  # visible color for text mode
+		$u = "_";
+	}
+	if($silent eq "imagetagbig") {
+		$colors->{fg_color} = "#000000";  # visible color for text mode
+		$u = "";
+	}
+
+	for($n = 0; $n < keys(%{$nvme->{list}}); $n++) {
+		for($n2 = 1; $n2 <= 8; $n2++) {
+			$str = $u . $package . $n . $n2 . "." . $tf->{when} . ".$imgfmt_lc";
+			push(@IMG, $str);
+			unlink("$IMG_DIR" . $str);
+			if(lc($config->{enable_zoom}) eq "y") {
+				$str = $u . $package . $n . $n2 . "z." . $tf->{when} . ".$imgfmt_lc";
+				push(@IMGz, $str);
+				unlink("$IMG_DIR" . $str);
+			}
+		}
+	}
+
+	$e = 0;
+	foreach my $k (sort keys %{$nvme->{list}}) {
+		# values delimitted by ", " (comma + space)
+		my @d = split(', ', $nvme->{list}->{$k});
+
+		if($e) {
+			push(@output, "   <br>\n");
+		}
+		if($title) {
+			push(@output, main::graph_header($title, 2));
+		}
+
+		@riglim = @{setup_riglim($rigid[0], $limit[0])};
+		undef(@CDEF);
+		undef(@tmp);
+		undef(@tmpz);
+		push(@tmp, "COMMENT: \\n");
+		for($n = 0; $n < 8; $n++) {
+			if($d[$n]) {
+				my $dstr = trim($d[$n]);
+				my $base = "";
+				$dstr =~ s/^\"//;
+				$dstr =~ s/\"$//;
+
+				# check if device name is a symbolic link
+				# e.g. /dev/nvme/by-path/pci-0000:07:07.0-scsi-0:0:0:0
+				if(-l $dstr) {
+					$base = basename($dstr);
+					$dstr = abs_path(dirname($dstr) . "/" . readlink($dstr));
+					chomp($dstr);
+				}
+
+				#				$dstr =~ s/^(.+?) .*$/$1/;
+				if($base && defined($nvme->{map}->{$base})) {
+					$dstr = $nvme->{map}->{$base};
+				} else {
+					if(defined($nvme->{map}->{$dstr})) {
+						$dstr = $nvme->{map}->{$dstr};
+					}
+				}
+				$str = sprintf("%-20s", $dstr);
+				push(@tmp, "LINE2:temp_" . $n . $LC[$n] . ":$str");
+				push(@tmpz, "LINE2:temp_" . $n . $LC[$n] . ":$dstr");
+				push(@tmp, "GPRINT:temp_" . $n . ":LAST:   Current\\: %2.0lf");
+				push(@tmp, "GPRINT:temp_" . $n . ":AVERAGE:   Average\\: %2.0lf");
+				push(@tmp, "GPRINT:temp_" . $n . ":MIN:   Min\\: %2.0lf");
+				push(@tmp, "GPRINT:temp_" . $n . ":MAX:   Max\\: %2.0lf\\n");
+			}
+		}
+		push(@tmp, "COMMENT: \\n");
+		push(@tmp, "COMMENT: \\n");
+		if(scalar(@d) && (scalar(@d) % 2)) {
+			push(@tmp, "COMMENT: \\n");
+		}
+		if($title) {
+			push(@output, "    <tr>\n");
+			push(@output, "    <td>\n");
+		}
+		if(lc($config->{temperature_scale}) eq "f") {
+			push(@CDEF, "CDEF:temp_0=9,5,/,temp0,*,32,+");
+			push(@CDEF, "CDEF:temp_1=9,5,/,temp1,*,32,+");
+			push(@CDEF, "CDEF:temp_2=9,5,/,temp2,*,32,+");
+			push(@CDEF, "CDEF:temp_3=9,5,/,temp3,*,32,+");
+			push(@CDEF, "CDEF:temp_4=9,5,/,temp4,*,32,+");
+			push(@CDEF, "CDEF:temp_5=9,5,/,temp5,*,32,+");
+			push(@CDEF, "CDEF:temp_6=9,5,/,temp6,*,32,+");
+			push(@CDEF, "CDEF:temp_7=9,5,/,temp7,*,32,+");
+		} else {
+			push(@CDEF, "CDEF:temp_0=temp0");
+			push(@CDEF, "CDEF:temp_1=temp1");
+			push(@CDEF, "CDEF:temp_2=temp2");
+			push(@CDEF, "CDEF:temp_3=temp3");
+			push(@CDEF, "CDEF:temp_4=temp4");
+			push(@CDEF, "CDEF:temp_5=temp5");
+			push(@CDEF, "CDEF:temp_6=temp6");
+			push(@CDEF, "CDEF:temp_7=temp7");
+		}
+		if(lc($config->{show_gaps}) eq "y") {
+			push(@tmp, "AREA:wrongdata#$colors->{gap}:");
+			push(@tmpz, "AREA:wrongdata#$colors->{gap}:");
+			push(@CDEF, "CDEF:wrongdata=allvalues,UN,INF,UNKN,IF");
+		}
+		($width, $height) = split('x', $config->{graph_size}->{main});
+		if($silent =~ /imagetag/) {
+			($width, $height) = split('x', $config->{graph_size}->{remote}) if $silent eq "imagetag";
+			($width, $height) = split('x', $config->{graph_size}->{main}) if $silent eq "imagetagbig";
+			@tmp = @tmpz;
+			push(@tmp, "COMMENT: \\n");
+			push(@tmp, "COMMENT: \\n");
+			push(@tmp, "COMMENT: \\n");
+		}
+		$pic = $rrd{$version}->("$IMG_DIR" . "$IMG[$e * 3]",
+		"--title=$config->{graphs}->{_nvme1}  ($tf->{nwhen}$tf->{twhen})",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"--imgformat=$imgfmt_uc",
+		"--vertical-label=$temp_scale",
+		"--width=$width",
+		"--height=$height",
+		@extra,
+		@riglim,
+		$zoom,
+		@{$cgi->{version12}},
+		@{$colors->{graph_colors}},
+		"DEF:temp0=$rrd:nvme" . $e ."_hd0_temp:AVERAGE",
+		"DEF:temp1=$rrd:nvme" . $e ."_hd1_temp:AVERAGE",
+		"DEF:temp2=$rrd:nvme" . $e ."_hd2_temp:AVERAGE",
+		"DEF:temp3=$rrd:nvme" . $e ."_hd3_temp:AVERAGE",
+		"DEF:temp4=$rrd:nvme" . $e ."_hd4_temp:AVERAGE",
+		"DEF:temp5=$rrd:nvme" . $e ."_hd5_temp:AVERAGE",
+		"DEF:temp6=$rrd:nvme" . $e ."_hd6_temp:AVERAGE",
+		"DEF:temp7=$rrd:nvme" . $e ."_hd7_temp:AVERAGE",
+		"CDEF:allvalues=temp0,temp1,temp2,temp3,temp4,temp5,temp6,temp7,+,+,+,+,+,+,+",
+		@CDEF,
+		@tmp);
+		$err = RRDs::error;
+		push(@output, "ERROR: while graphing $IMG_DIR" . "$IMG[$e * 3]: $err\n") if $err;
+		if(lc($config->{enable_zoom}) eq "y") {
+			($width, $height) = split('x', $config->{graph_size}->{zoom});
+			$picz = $rrd{$version}->("$IMG_DIR" . "$IMGz[$e * 3]",
+			"--title=$config->{graphs}->{_nvme1}  ($tf->{nwhen}$tf->{twhen})",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"--imgformat=$imgfmt_uc",
+			"--vertical-label=$temp_scale",
+			"--width=$width",
+			"--height=$height",
+			@extra,
+			@riglim,
+			$zoom,
+			@{$cgi->{version12}},
+			@{$colors->{graph_colors}},
+			"DEF:temp0=$rrd:nvme" . $e ."_hd0_temp:AVERAGE",
+			"DEF:temp1=$rrd:nvme" . $e ."_hd1_temp:AVERAGE",
+			"DEF:temp2=$rrd:nvme" . $e ."_hd2_temp:AVERAGE",
+			"DEF:temp3=$rrd:nvme" . $e ."_hd3_temp:AVERAGE",
+			"DEF:temp4=$rrd:nvme" . $e ."_hd4_temp:AVERAGE",
+			"DEF:temp5=$rrd:nvme" . $e ."_hd5_temp:AVERAGE",
+			"DEF:temp6=$rrd:nvme" . $e ."_hd6_temp:AVERAGE",
+			"DEF:temp7=$rrd:nvme" . $e ."_hd7_temp:AVERAGE",
+			"CDEF:allvalues=temp0,temp1,temp2,temp3,temp4,temp5,temp6,temp7,+,+,+,+,+,+,+",
+			@CDEF,
+			@tmpz);
+			$err = RRDs::error;
+			push(@output, "ERROR: while graphing $IMG_DIR" . "$IMGz[$e * 3]: $err\n") if $err;
+		}
+		$e2 = $e + 1;
+		if($title || ($silent =~ /imagetag/ && $graph =~ /nvme$e2/)) {
+			if(lc($config->{enable_zoom}) eq "y") {
+				if(lc($config->{disable_javascript_void}) eq "y") {
+					push(@output, "      <a href=\"" . $config->{url} . "/" . $config->{imgs_dir} . $IMGz[$e * 3] . "\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3] . "' border='0'></a>\n");
+				} else {
+					if($version eq "new") {
+						$picz_width = $picz->{image_width} * $config->{global_zoom};
+						$picz_height = $picz->{image_height} * $config->{global_zoom};
+					} else {
+						$picz_width = $width + 115;
+						$picz_height = $height + 100;
+					}
+					push(@output, "      <a href=\"javascript:void(window.open('" . $config->{url} . "/" . $config->{imgs_dir} . $IMGz[$e * 3] . "','','width=" . $picz_width . ",height=" . $picz_height . ",scrollbars=0,resizable=0'))\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3] . "' border='0'></a>\n");
+				}
+			} else {
+				push(@output, "      <img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3] . "'>\n");
+			}
+		}
+
+		if($title) {
+			push(@output, "    </td>\n");
+			push(@output, "    <td class='td-valign-top'>\n");
+		}
+		@riglim = @{setup_riglim($rigid[1], $limit[1])};
+		undef(@tmp);
+		undef(@tmpz);
+		undef(@CDEF);
+		for($n = 0; $n < 8; $n += 2) {
+			if($d[$n]) {
+				my $dstr = trim($d[$n]);
+				my $base = "";
+				$dstr =~ s/^\"//;
+				$dstr =~ s/\"$//;
+
+				# check if device name is a symbolic link
+				# e.g. /dev/nvme/by-path/pci-0000:07:07.0-scsi-0:0:0:0
+				if(-l $dstr) {
+					$base = basename($dstr);
+					$dstr = abs_path(dirname($dstr) . "/" . readlink($dstr));
+					chomp($dstr);
+				}
+
+				#				$dstr =~ s/^(.+?) .*$/$1/;
+				if($base && defined($nvme->{map}->{$base})) {
+					$dstr = $nvme->{map}->{$base};
+				} else {
+					if(defined($nvme->{map}->{$dstr})) {
+						$dstr = $nvme->{map}->{$dstr};
+					}
+				}
+				$str = sprintf("%-17s", substr($dstr, 0, 17));
+				push(@tmp, "LINE2:rsc" . $n . $LC[$n] . ":$str");
+				push(@tmpz, "LINE2:rsc" . $n . $LC[$n] . ":$dstr\\g");
+			}
+			if($d[$n + 1]) {
+				my $dstr = trim($d[$n + 1]);
+				my $base = "";
+				$dstr =~ s/^\"//;
+				$dstr =~ s/\"$//;
+
+				# check if device name is a symbolic link
+				# e.g. /dev/nvme/by-path/pci-0000:07:07.0-scsi-0:0:0:0
+				if(-l $dstr) {
+					$base = basename($dstr);
+					$dstr = abs_path(dirname($dstr) . "/" . readlink($dstr));
+					chomp($dstr);
+				}
+
+				#				$dstr =~ s/^(.+?) .*$/$1/;
+				if($base && defined($nvme->{map}->{$base})) {
+					$dstr = $nvme->{map}->{$base};
+				} else {
+					if(defined($nvme->{map}->{$dstr})) {
+						$dstr = $nvme->{map}->{$dstr};
+					}
+				}
+				$str = sprintf("%-17s", substr($dstr, 0, 17));
+				push(@tmp, "LINE2:rsc" . ($n + 1) . $LC[$n + 1] . ":$str\\n");
+				push(@tmpz, "LINE2:rsc" . ($n + 1) . $LC[$n + 1] . ":$dstr\\g");
+			}
+		}
+		if(lc($config->{show_gaps}) eq "y") {
+			push(@tmp, "AREA:wrongdata#$colors->{gap}:");
+			push(@tmpz, "AREA:wrongdata#$colors->{gap}:");
+			push(@CDEF, "CDEF:wrongdata=allvalues,UN,INF,UNKN,IF");
+		}
+		($width, $height) = split('x', $config->{graph_size}->{small});
+		if($silent =~ /imagetag/) {
+			($width, $height) = split('x', $config->{graph_size}->{remote}) if $silent eq "imagetag";
+			($width, $height) = split('x', $config->{graph_size}->{main}) if $silent eq "imagetagbig";
+			@tmp = @tmpz;
+			push(@tmp, "COMMENT: \\n");
+			push(@tmp, "COMMENT: \\n");
+			push(@tmp, "COMMENT: \\n");
+		}
+		$pic = $rrd{$version}->("$IMG_DIR" . "$IMG[$e * 3 + 1]",
+		"--title=$config->{graphs}->{_nvme2}  ($tf->{nwhen}$tf->{twhen})",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"--imgformat=$imgfmt_uc",
+		"--vertical-label=Percent (%)",
+		"--width=$width",
+		"--height=$height",
+		@extra,
+		@riglim,
+		$zoom,
+		@{$cgi->{version12}},
+		@{$cgi->{version12_small}},
+		@{$colors->{graph_colors}},
+		"DEF:rsc0=$rrd:nvme" . $e . "_hd0_smart1:AVERAGE",
+		"DEF:rsc1=$rrd:nvme" . $e . "_hd1_smart1:AVERAGE",
+		"DEF:rsc2=$rrd:nvme" . $e . "_hd2_smart1:AVERAGE",
+		"DEF:rsc3=$rrd:nvme" . $e . "_hd3_smart1:AVERAGE",
+		"DEF:rsc4=$rrd:nvme" . $e . "_hd4_smart1:AVERAGE",
+		"DEF:rsc5=$rrd:nvme" . $e . "_hd5_smart1:AVERAGE",
+		"DEF:rsc6=$rrd:nvme" . $e . "_hd6_smart1:AVERAGE",
+		"DEF:rsc7=$rrd:nvme" . $e . "_hd7_smart1:AVERAGE",
+		"CDEF:allvalues=rsc0,rsc1,rsc2,rsc3,rsc4,rsc5,rsc6,rsc7,+,+,+,+,+,+,+",
+		@CDEF,
+		@tmp);
+		$err = RRDs::error;
+		push(@output, "ERROR: while graphing $IMG_DIR" . "$IMG[$e * 3 + 1]: $err\n") if $err;
+		if(lc($config->{enable_zoom}) eq "y") {
+			($width, $height) = split('x', $config->{graph_size}->{zoom});
+			$picz = $rrd{$version}->("$IMG_DIR" . "$IMGz[$e * 3 + 1]",
+			"--title=$config->{graphs}->{_nvme2}  ($tf->{nwhen}$tf->{twhen})",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"--imgformat=$imgfmt_uc",
+			"--vertical-label=Percent (%)",
+			"--width=$width",
+			"--height=$height",
+			@extra,
+			@riglim,
+			$zoom,
+			@{$cgi->{version12}},
+			@{$cgi->{version12_small}},
+			@{$colors->{graph_colors}},
+			"DEF:rsc0=$rrd:nvme" . $e . "_hd0_smart1:AVERAGE",
+			"DEF:rsc1=$rrd:nvme" . $e . "_hd1_smart1:AVERAGE",
+			"DEF:rsc2=$rrd:nvme" . $e . "_hd2_smart1:AVERAGE",
+			"DEF:rsc3=$rrd:nvme" . $e . "_hd3_smart1:AVERAGE",
+			"DEF:rsc4=$rrd:nvme" . $e . "_hd4_smart1:AVERAGE",
+			"DEF:rsc5=$rrd:nvme" . $e . "_hd5_smart1:AVERAGE",
+			"DEF:rsc6=$rrd:nvme" . $e . "_hd6_smart1:AVERAGE",
+			"DEF:rsc7=$rrd:nvme" . $e . "_hd7_smart1:AVERAGE",
+			"CDEF:allvalues=rsc0,rsc1,rsc2,rsc3,rsc4,rsc5,rsc6,rsc7,+,+,+,+,+,+,+",
+			@CDEF,
+			@tmpz);
+			$err = RRDs::error;
+			push(@output, "ERROR: while graphing $IMG_DIR" . "$IMGz[$e * 3 + 1]: $err\n") if $err;
+		}
+		$e2 = $e + 2;
+		if($title || ($silent =~ /imagetag/ && $graph =~ /nvme$e2/)) {
+			if(lc($config->{enable_zoom}) eq "y") {
+				if(lc($config->{disable_javascript_void}) eq "y") {
+					push(@output, "      <a href=\"" . $config->{url} . "/" . $config->{imgs_dir} . $IMGz[$e * 3 + 1] . "\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3 + 1] . "' border='0'></a>\n");
+				} else {
+					if($version eq "new") {
+						$picz_width = $picz->{image_width} * $config->{global_zoom};
+						$picz_height = $picz->{image_height} * $config->{global_zoom};
+					} else {
+						$picz_width = $width + 115;
+						$picz_height = $height + 100;
+					}
+					push(@output, "      <a href=\"javascript:void(window.open('" . $config->{url} . "/" . $config->{imgs_dir} . $IMGz[$e * 3 + 1] . "','','width=" . $picz_width . ",height=" . $picz_height . ",scrollbars=0,resizable=0'))\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3 + 1] . "' border='0'></a>\n");
+				}
+			} else {
+				push(@output, "      <img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3 + 1] . "'>\n");
+			}
+		}
+
+		@riglim = @{setup_riglim($rigid[2], $limit[2])};
+		undef(@tmp);
+		undef(@tmpz);
+		undef(@CDEF);
+		for($n = 0; $n < 8; $n += 2) {
+			if($d[$n]) {
+				my $dstr = trim($d[$n]);
+				my $base = "";
+				$dstr =~ s/^\"//;
+				$dstr =~ s/\"$//;
+
+				# check if device name is a symbolic link
+				# e.g. /dev/nvme/by-path/pci-0000:07:07.0-scsi-0:0:0:0
+				if(-l $dstr) {
+					$base = basename($dstr);
+					$dstr = abs_path(dirname($dstr) . "/" . readlink($dstr));
+					chomp($dstr);
+				}
+
+				#				$dstr =~ s/^(.+?) .*$/$1/;
+				if($base && defined($nvme->{map}->{$base})) {
+					$dstr = $nvme->{map}->{$base};
+				} else {
+					if(defined($nvme->{map}->{$dstr})) {
+						$dstr = $nvme->{map}->{$dstr};
+					}
+				}
+				$str = sprintf("%-17s", substr($dstr, 0, 17));
+				push(@tmp, "LINE2:cps" . $n . $LC[$n] . ":$str");
+				push(@tmpz, "LINE2:cps" . $n . $LC[$n] . ":$dstr\\g");
+			}
+			if($d[$n + 1]) {
+				my $dstr = trim($d[$n + 1]);
+				my $base = "";
+				$dstr =~ s/^\"//;
+				$dstr =~ s/\"$//;
+
+				# check if device name is a symbolic link
+				# e.g. /dev/nvme/by-path/pci-0000:07:07.0-scsi-0:0:0:0
+				if(-l $dstr) {
+					$base = basename($dstr);
+					$dstr = abs_path(dirname($dstr) . "/" . readlink($dstr));
+					chomp($dstr);
+				}
+
+				#				$dstr =~ s/^(.+?) .*$/$1/;
+				if($base && defined($nvme->{map}->{$base})) {
+					$dstr = $nvme->{map}->{$base};
+				} else {
+					if(defined($nvme->{map}->{$dstr})) {
+						$dstr = $nvme->{map}->{$dstr};
+					}
+				}
+				$str = sprintf("%-17s", substr($dstr, 0, 17));
+				push(@tmp, "LINE2:cps" . ($n + 1) . $LC[$n + 1] . ":$str\\n");
+				push(@tmpz, "LINE2:cps" . ($n + 1) . $LC[$n + 1] . ":$dstr\\g");
+			}
+		}
+		if(lc($config->{show_gaps}) eq "y") {
+			push(@tmp, "AREA:wrongdata#$colors->{gap}:");
+			push(@tmpz, "AREA:wrongdata#$colors->{gap}:");
+			push(@CDEF, "CDEF:wrongdata=allvalues,UN,INF,UNKN,IF");
+		}
+		($width, $height) = split('x', $config->{graph_size}->{small});
+		if($silent =~ /imagetag/) {
+			($width, $height) = split('x', $config->{graph_size}->{remote}) if $silent eq "imagetag";
+			($width, $height) = split('x', $config->{graph_size}->{main}) if $silent eq "imagetagbig";
+			@tmp = @tmpz;
+			push(@tmp, "COMMENT: \\n");
+			push(@tmp, "COMMENT: \\n");
+			push(@tmp, "COMMENT: \\n");
+		}
+		$pic = $rrd{$version}->("$IMG_DIR" . "$IMG[$e * 3 + 2]",
+		"--title=$config->{graphs}->{_nvme3}  ($tf->{nwhen}$tf->{twhen})",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"--imgformat=$imgfmt_uc",
+		"--vertical-label=Percent (%)",
+		"--width=$width",
+		"--height=$height",
+		@extra,
+		@riglim,
+		$zoom,
+		@{$cgi->{version12}},
+		@{$cgi->{version12_small}},
+		@{$colors->{graph_colors}},
+		"DEF:cps0=$rrd:nvme" . $e . "_hd0_smart2:AVERAGE",
+		"DEF:cps1=$rrd:nvme" . $e . "_hd1_smart2:AVERAGE",
+		"DEF:cps2=$rrd:nvme" . $e . "_hd2_smart2:AVERAGE",
+		"DEF:cps3=$rrd:nvme" . $e . "_hd3_smart2:AVERAGE",
+		"DEF:cps4=$rrd:nvme" . $e . "_hd4_smart2:AVERAGE",
+		"DEF:cps5=$rrd:nvme" . $e . "_hd5_smart2:AVERAGE",
+		"DEF:cps6=$rrd:nvme" . $e . "_hd6_smart2:AVERAGE",
+		"DEF:cps7=$rrd:nvme" . $e . "_hd7_smart2:AVERAGE",
+		"CDEF:allvalues=cps0,cps1,cps2,cps3,cps4,cps5,cps6,cps7,+,+,+,+,+,+,+",
+		@CDEF,
+		@tmp);
+		$err = RRDs::error;
+		push(@output, "ERROR: while graphing $IMG_DIR" . "$IMG[$e * 3 + 2]: $err\n") if $err;
+		if(lc($config->{enable_zoom}) eq "y") {
+			($width, $height) = split('x', $config->{graph_size}->{zoom});
+			$picz = $rrd{$version}->("$IMG_DIR" . "$IMGz[$e * 3 + 2]",
+			"--title=$config->{graphs}->{_nvme3}  ($tf->{nwhen}$tf->{twhen})",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"--imgformat=$imgfmt_uc",
+			"--vertical-label=Percent (%)",
+			"--width=$width",
+			"--height=$height",
+			@extra,
+			@riglim,
+			$zoom,
+			@{$cgi->{version12}},
+			@{$cgi->{version12_small}},
+			@{$colors->{graph_colors}},
+			"DEF:cps0=$rrd:nvme" . $e . "_hd0_smart2:AVERAGE",
+			"DEF:cps1=$rrd:nvme" . $e . "_hd1_smart2:AVERAGE",
+			"DEF:cps2=$rrd:nvme" . $e . "_hd2_smart2:AVERAGE",
+			"DEF:cps3=$rrd:nvme" . $e . "_hd3_smart2:AVERAGE",
+			"DEF:cps4=$rrd:nvme" . $e . "_hd4_smart2:AVERAGE",
+			"DEF:cps5=$rrd:nvme" . $e . "_hd5_smart2:AVERAGE",
+			"DEF:cps6=$rrd:nvme" . $e . "_hd6_smart2:AVERAGE",
+			"DEF:cps7=$rrd:nvme" . $e . "_hd7_smart2:AVERAGE",
+			"CDEF:allvalues=cps0,cps1,cps2,cps3,cps4,cps5,cps6,cps7,+,+,+,+,+,+,+",
+			@CDEF,
+			@tmpz);
+			$err = RRDs::error;
+			push(@output, "ERROR: while graphing $IMG_DIR" . "$IMGz[$e * 3 + 2]: $err\n") if $err;
+		}
+		$e2 = $e + 3;
+		if($title || ($silent =~ /imagetag/ && $graph =~ /nvme$e2/)) {
+			if(lc($config->{enable_zoom}) eq "y") {
+				if(lc($config->{disable_javascript_void}) eq "y") {
+					push(@output, "      <a href=\"" . $config->{url} . "/" . $config->{imgs_dir} . $IMGz[$e * 3 + 2] . "\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3 + 2] . "' border='0'></a>\n");
+				} else {
+					if($version eq "new") {
+						$picz_width = $picz->{image_width} * $config->{global_zoom};
+						$picz_height = $picz->{image_height} * $config->{global_zoom};
+					} else {
+						$picz_width = $width + 115;
+						$picz_height = $height + 100;
+					}
+					push(@output, "      <a href=\"javascript:void(window.open('" . $config->{url} . "/" . $config->{imgs_dir} . $IMGz[$e * 3 + 2] . "','','width=" . $picz_width . ",height=" . $picz_height . ",scrollbars=0,resizable=0'))\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3 + 2] . "' border='0'></a>\n");
+				}
+			} else {
+				push(@output, "      <img src='" . $config->{url} . "/" . $config->{imgs_dir} . $IMG[$e * 3 + 2] . "'>\n");
+			}
+		}
+
+		if($title) {
+			push(@output, "    </td>\n");
+			push(@output, "    </tr>\n");
+
+			if($nvme->{desc}->{$k}) {
+				push(@output, "    <tr>\n");
+				push(@output, "      <td bgcolor='$colors->{title_bg_color}' colspan='2'>\n");
+				push(@output, "       <font face='Verdana, sans-serif' color='$colors->{title_fg_color}'>\n");
+				push(@output, "       <font size='-1'>\n");
+				push(@output, "        <b>&nbsp;&nbsp;$nvme->{desc}->{$k}<b>\n");
+				push(@output, "       </font></font>\n");
+				push(@output, "      </td>\n");
+				push(@output, "    </tr>\n");
+			}
+			push(@output, main::graph_footer());
+		}
+		$e++;
+	}
+	push(@output, "  <br>\n");
+	return @output;
+}
+
+1;