use strict qw(vars);
use CGI::SpeedyCGI qw/:standard -no_xhtml/;
use CGI qw/:standard -no_xhtml/;
+use POSIX;
sub fail ($) {
print(header(-status=>500),
]);
}
+our %disk_rdev2rrd;
+
+foreach my $physdiskrrd (<$R/disk-*/disk_octets.rrd>) {
+ $physdiskrrd =~ s,octets\.rrd$,, or die;
+ $physdiskrrd =~ m,-([^/]+)/disk_$, or die;
+ my $physdev= "/dev/$1";
+ if (!stat $physdev) {
+ die "$physdev $!" unless $!==&ENOENT;
+ next;
+ }
+ die "$physdev ?" unless S_ISBLK((stat _)[2]);
+ $disk_rdev2rrd{(stat _)[6]}= $physdiskrrd;
}
+our @disk_vgs;
+
+sub lvgraphs ($$) {
+ my ($vg, $factor) = @_;
+ my @lvs;
+ my $varname= $vg;
+ $varname =~ s/[^0-9a-zA-Y]/ sprintf "Z%02x", ord($&) /ge;
+ my $vginfo= {
+ Name => $vg,
+ Varname => $varname
+ };
+ foreach my $bo (qw(octets ops)) {
+ foreach my $rw (qw(read write)) {
+ $vginfo->{VarDefs}{$bo}{$rw}= [];
+ $vginfo->{Sumdef}{$bo}{$rw}= '0';
+ }
+ }
+ my $ix=0;
+ foreach my $lvpath (</dev/$vg/*>) {
+ my $lv= $lvpath; $lv =~ s,.*/,,;
+ if (!stat $lvpath) {
+ die "$lvpath $!" unless $!==&ENOENT;
+ next;
+ }
+ die "$lvpath ?" unless S_ISBLK((stat _)[2]);
+ my $rrd= $disk_rdev2rrd{(stat _)[6]};
+ next unless defined $rrd;
+
+ foreach my $bo (qw(octets ops)) {
+0 and
+ graph_of_group('IO', "$vg $lv", $bo, { Units => '[/s]' },
+ [
+ (map { ("DEF:$_=${rrd}${bo}.rrd:$_:AVERAGE") } qw(read write)),
+ "CDEF:mwrite=0,write,-",
+ "AREA:read#00f:read",
+ "AREA:mwrite#f00:write"
+ ]);
+ foreach my $rw (qw(read write)) {
+ $ix++;
+ my $tvar= "lv_${rw}_${bo}_${varname}_${ix}";
+ push @{ $vginfo->{VarDefs}{$bo}{$rw} },
+ "DEF:$tvar=${rrd}${bo}.rrd:$rw:AVERAGE";
+ $vginfo->{Sumdef}{$bo}{$rw} .= ",$tvar,+";
+ }
+ }
+ }
+ foreach my $bo (qw(octets ops)) {
+ my $defs= [];
+ foreach my $rw (qw(read write)) {
+ push @$defs, @{ $vginfo->{VarDefs}{$bo}{$rw} };
+ push @$defs, "CDEF:${rw}_vg_${varname}=".
+ $vginfo->{Sumdef}{$bo}{$rw}.
+ sprintf(",%f,*", $rw eq 'write' ? -$factor : $factor);
+ }
+ $vginfo->{Defs}{$bo}= $defs;
+ }
+ push @disk_vgs, $vginfo;
+}
+
+lvgraphs('vg-main', 1);
+lvgraphs('vg-chiark-stripe', 0.5);
+
+foreach my $bo (qw(octets ops)) {
+ my @a= ();
+ foreach my $rw (qw(read write)) {
+ my $stack= '';
+ foreach my $vginfo (@disk_vgs) {
+ push @a, @{ $vginfo->{Defs}{$bo} };
+ push @a, "AREA:${rw}_vg_$vginfo->{Varname}#0ff:$vginfo->{Name}"
+ .$stack;
+ $stack= ':STACK';
+ }
+ }
+ graph_of_group('IO', 'T', $bo, { Units => '[/s]' }, \@a);
+}
+
+}
#---------- right, that was the initialisation ----------
our $self= url(-relative=>1);