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index.pl
executable file
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index.pl
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#!/usr/bin/perl
# VMchart - browser-based generator for nice charts of LVM and BTRFS usage across different file servers
# (c) 2011 Christian Herzog <[email protected]> and Patrick Schmid <[email protected]>
# incremental AJAX loading by Philip Ezhukattil <[email protected]> and Claude Becker
# multithreading by Philip Ezhukattil <[email protected]> and Claude Becker <[email protected]>
# distributed under the terms of the GNU General Public License version 2 or any later version.
# project website: https://readme.phys.ethz.ch/services/lvmchart/
# 2011/08/04 v1.0 - initial working version
# 2012/04/22 v2.0 - added backend information
# 2012/04/25 v2.1 - added PV change log to detect defective backends
# 2012/07/10 v3.0 - added BTRFS support
# 2012/07/11 v3.1 - added navigation menu
# 2012/07/31 v3.2 - added threads
use strict;
use warnings;
use JSON;
use POSIX qw(ceil strftime);
use MLDBM qw(DB_File); #to store hashes of hashes
use Clone qw(clone); #to clone hashes of hashes
use Fcntl; #to set file permissions
use File::Copy;
use File::Basename;
use threads qw(yield);
use threads::shared;
use Thread::Queue;
use List::MoreUtils qw(uniq);
use Math::Round qw(nearest);
use Data::Dumper;
my $myself = basename($0);
my @servers;
my %info;
my %PVhistory = ();
my $warnings = '';
my (%VMdata, $UNIT);
my ($markup, $javascript);
my %backends :shared = ();
my %PVlayout :shared = ();
my %emptySlices :shared = ();
my $lastUpdate = strftime "%H:%M:%S %d.%m.%Y", localtime;
my $grandTotal :shared;
my $grandTotalUsed :shared;
my $grandFSLevel :shared;
my $grandInFS :shared;
my $grandInLV :shared;
my $grandInVG :shared;
my $grandInPV :shared;
my $grandUnalloc :shared;
my $grandPVSize :shared;
#define parameters
use constant NTHREADS => 6;
my $BARSPERCHART = 8; #number of LV in bar chart
my $ORGSPERCHART = 9; #number of LV in org chart
my $CHARTSPERLINE = 3; #number of LV charts in one line
my $MAXCHARTFACTOR = 10; #max factor in one LV chart
my $GLOBALUNIT = 'TiB'; #summary data is in TiB
my %labels = (
'fsfill' => 'FS filling level',
'infs' => 'available in FS',
'inlv' => 'available in LVM2 LV',
'invg' => 'available in LVM2 VG',
'inpv' => 'available in LVM2 PV',
'unalloc' => 'not allocated',
);
#read hostnames from file
open HOSTS, "hostlist";
while (<HOSTS>) {
my ($host, $info) = split / - /;
chomp $info;
push @servers, $host;
$info{$host} = $info;
}
close HOSTS;
my $numberOfServers = @servers;
#determine whether we are in HTML or AJAX mode
my $option = $ENV{QUERY_STRING} || '';
if ($option eq 'data'){
print "Content-type:text/plain\r\n\r\n";
$| = 1; # Flush output continuously
my $Q = Thread::Queue->new;
my @threads = map threads->create( \&getdata, $Q ), 1 .. NTHREADS; #create N threads
$Q->enqueue($_) for @servers; #queue all servers
$Q->enqueue( (undef) x NTHREADS ); #flush queue
$_->join for @threads; #start threading
while ($Q->pending()) { #wait till queue is done
select(undef, undef, undef, 0.1); #sleep for 0.1 s
}
&getBackends();
} else {
print "Content-type:text/html\r\n\r\n";
print html();
}
sub getdata {
my $Q = shift;
my $tid = threads->tid;
while (my $server = $Q->dequeue) {
my $frontendInfo;
my $json_text;
if (!($json_text = `ssh -o IdentitiesOnly=yes -i /var/www/.ssh/remotesshwrapper root\@$server /usr/local/bin/remotesshwrapper vmchart.pl`)) {
$warnings .= "could not fetch JSON from server $server! $!<br />\n";
print "ENDOFELEMENTENDOFELEMENTENDOFELEMENT${warnings}ENDOFSERVER";
next;
} else {
# no autovivification for shared hashrefs
$backends{global} //= &share({});
my $json = JSON->new->allow_nonref;
my $VMdata;
if (!($VMdata = $json->decode($json_text))) {
$warnings .= "could not get LVM data from server $server<br />\n";
print "ENDOFELEMENTENDOFELEMENTENDOFELEMENT${warnings}ENDOFSERVER";
next;
}
%VMdata = %$VMdata;
next unless (keys %{$VMdata{vgs}}); #skip host if no vgs present
my $numLVs = 0; #count LV
foreach my $vg (keys %{$VMdata{vgs}}) {
foreach my $lv (keys %{$VMdata{$vg}{lvs}}) {
$numLVs++;
}
}
my $serverID = $server;
$serverID =~ s/-/_/g; #Google chart API needs underscores
$UNIT = $VMdata{unit}; #TiB or GiB comes from the JSON
if ($VMdata{warning}) {
$warnings .= "Host $server: ".$VMdata{warning}."<br />\n";
}
#populate backend information hash
foreach my $backend (sort keys %{$VMdata{backends}}) {
$backends{$backend} //= &share({});
$backends{$backend}{$server} //= &share({});
my $j;
foreach my $slice (sort { $a cmp $b } keys %{$VMdata{backends}{$backend}{slices}}) {
$backends{global}{$server} //= &share({});
my $vg = $VMdata{backends}{$backend}{slices}{$slice}{vg};
$backends{global}{$server}{$vg} //= &share({}); #TODO should move outside of backend loop for local storage
$backends{global}{$server}{btrfs} //= &share({});
$backends{global}{$server}{zfs} //= &share({});
$emptySlices{$backend} //= &share({});
$emptySlices{$backend}{$slice} //= &share({});
if ($vg eq 'freespace') {
my $size = $VMdata{backends}{$backend}{slices}{$slice}{size};
my $vmtype = $VMdata{backends}{$backend}{slices}{$slice}{vmtype};
$backends{global}{$server}{$vmtype} //= &share({});
$emptySlices{$backend}{$slice}{$vmtype} //= &share({});
$emptySlices{$backend}{$slice}{$vmtype}{size} = $size;
$emptySlices{$backend}{$slice}{$vmtype}{unit} = $UNIT;
$backends{global}{$server}{$vmtype}{slices} .= "$backend-$slice, \\n";
}
my $size = units($VMdata{backends}{$backend}{slices}{$slice}{size}, $UNIT, $GLOBALUNIT);
$backends{$backend}{$server}{$vg} //= &share({});
$backends{$backend}{size} += $size;
$backends{$backend}{$server}{size} += $size;
$backends{$backend}{$server}{$vg}{size} += $size;
$backends{$backend}{slices} .= "$slice ($size $UNIT), \\n";
$backends{$backend}{$server}{slices} .= "$slice ($size $UNIT), \\n";
$backends{$backend}{$server}{$vg}{slices} .= "$slice ($size $UNIT), \\n";
$backends{global}{$server}{$vg}{slices} .= "$backend-$slice ($size $UNIT), \\n";
$backends{global}{$server}{$vg}{vmtype} = $VMdata{backends}{$backend}{slices}{$slice}{vmtype};
$backends{global}{$server}{$vg}{raidtype} = $VMdata{backends}{$backend}{slices}{$slice}{raidtype} || '';
if ($backends{global}{$server}{$vg}{vmtype} eq 'btrfs') {
$backends{global}{$server}{btrfs}{slices} .= "$backend-$slice, \\n";
}
if ($backends{global}{$server}{$vg}{vmtype} eq 'zfs') {
$backends{global}{$server}{zfs}{slices} .= "$backend-$slice, \\n";
}
$PVlayout{$server} //= &share({});
$PVlayout{$server}{$vg} //= &share({});
$PVlayout{$server}{$vg}{"$backend-$slice"} = 1;
}
}
my $PVFSLevel = $VMdata{FSLevel}; #get PV data
my $PVInFS = $VMdata{inFS} - $PVFSLevel;
my $PVInLV = $VMdata{inLV};
my $PVInVG = $VMdata{inVG};
my $PVInPV = $VMdata{inPV};
my $unalloc = $VMdata{unalloc};
my $PVSize = $VMdata{size};
$grandFSLevel += nearest(.01, units($PVFSLevel, $UNIT, $GLOBALUNIT));
$grandInFS += nearest(.01, units($PVInFS, $UNIT, $GLOBALUNIT));
$grandInLV += nearest(.01, units($PVInLV, $UNIT, $GLOBALUNIT));
$grandInVG += nearest(.01, units($PVInVG, $UNIT, $GLOBALUNIT));
$grandInPV += nearest(.01, units($PVInPV, $UNIT, $GLOBALUNIT));
$grandUnalloc += nearest(.01, units($unalloc, $UNIT, $GLOBALUNIT));
$grandPVSize += nearest(.01, units($PVSize, $UNIT, $GLOBALUNIT));
$grandTotal += nearest(.01, units($PVSize, $UNIT, $GLOBALUNIT));
$grandTotalUsed += nearest(.01, units($PVFSLevel, $UNIT, $GLOBALUNIT));
$javascript .= pvData($serverID, $PVFSLevel, $PVInFS, $PVInLV, $PVInVG, $PVInPV, $unalloc, $PVSize, $UNIT);
my (%vgs, %lvs, $vgRows, %lvRows, $orgRows, $haveLVM, $haveBTRFS, $haveZFS);
my $VGslices;
my $lvGrpOrg = 0;
my $orgcount = 0;
my $orgChart = "<div class=\"orgchart\" id=\"org_chart_${serverID}_$lvGrpOrg\"></div>";
foreach my $vg (reverse sort { $VMdata{pv}{$a}{size} <=> $VMdata{pv}{$b}{size} } keys %{$VMdata{vgs}}) { #iterate over VGs
my $VGSize = $VMdata{pv}{$vg}{size};
my $vmType;
if ($vg eq 'btrfs') {
$vmType = 'btrfs';
} elsif ($vg eq 'zfs') {
$vmType = 'zfs';
} else {
$vmType = 'lvm2';
}
if ($vmType eq 'lvm2') {
my $VGFSLevel = $VMdata{pv}{$vg}{FSLevel} || 0; #get VG data
my $VGInFS = $VMdata{pv}{$vg}{inFS} || 0;
$VGInFS -= $VGFSLevel; #subtract filling level
my $VGInLV = $VMdata{pv}{$vg}{inLV} || 0;
my $VGInVG = $VMdata{pv}{$vg}{inVG} || 0;
$vgs{$vg}{size} = $VGSize;
$vgs{$vg}{js} = " {c:[{v: '$vg'},{v: $VGFSLevel, f:'$VGFSLevel $UNIT'},{v: $VGInFS, f:'$VGInFS $UNIT'},{v: $VGInLV, f:'$VGInLV $UNIT'},{v: $VGInVG, f:'$VGInVG $UNIT'}]},";
$backends{global}{$server} //= &share({}); #TODO should be handled further up
$backends{global}{$server}{$vg} //= &share({});
if ($VGslices = $backends{global}{$server}{$vg}{slices}) {
$VGslices = "LUNs for this VG: \\n" . $VGslices;
$VGslices = substr $VGslices, 0, -4;
} else {
$VGslices = "Volume group";
}
if ($VGInVG > 0 && $vg ne 'freespace') {
my $lv = "free";
my $key = "${lv}_$vg";
$orgRows .= "[{v:'$lv<div class=\"child freespace\">$VGInVG $UNIT</div>'},'$vg','free'],\n";
}
} elsif ($vmType eq 'btrfs') {
$VGslices = $backends{global}{$server}{$vg}{slices};
if ($VGslices) {
$VGslices = "LUNs for this volume: \\n" . $VGslices;
$VGslices = substr $VGslices, 0, -4;
}
} elsif ($vmType eq 'zfs') {
$VGslices = $backends{global}{$server}{$vg}{slices};
if ($VGslices) {
$VGslices = "devices for this pool: \\n" . $VGslices;
$VGslices = substr $VGslices, 0, -4;
}
}
my $vgName = ($vg eq 'freespace')?'<span class="free">free space</span>':$vg;
$orgRows .= "[{v: '$vg',f: '$vgName<div class=\"parent\">$VGSize $UNIT</div>'}, '','$VGslices'],";
foreach my $lv (reverse sort { $VMdata{pv}{$vg}{$a}{size} <=> $VMdata{pv}{$vg}{$b}{size} } keys %{$VMdata{$vg}{lvs}}) { #iterate over LVs, sorted by size
my $LVFSLevel = nearest(0.01, $VMdata{pv}{$vg}{$lv}{FSLevel}); #get LV data
my $LVInFS = nearest(0.01, $VMdata{pv}{$vg}{$lv}{inFS} - $LVFSLevel);
my $LVInLV = nearest(0.01, $VMdata{pv}{$vg}{$lv}{inLV});
my $LVSize = nearest(0.01, $VMdata{pv}{$vg}{$lv}{size});
my $FSType = $VMdata{pv}{$vg}{$lv}{FSType};
my $key = "${lv}_$vg";
if ($orgcount && !($orgcount % $ORGSPERCHART)) { #if org chart is full, create a new one
$javascript .= orgChart("${serverID}_$lvGrpOrg", $orgRows);
$lvGrpOrg++;
$orgChart .= "<br /><br /><div class=\"orgchart\" id=\"org_chart_${serverID}_$lvGrpOrg\"></div>\n";
$orgRows = "[{v:'$vg',f:'$vg<div class=\"parent\">(cont\\'d)</div>'}, '','$VGslices'],\n";
}
if ($vg ne 'freespace') { #we don't want VG and LV graphs for free space
$lvs{$vmType}{$key}{size} = $LVSize;
my $FSinfo = ($vmType eq 'btrfs' || $vmType eq 'zfs')?'':"($vg): $FSType";
$lvs{$vmType}{$key}{js} = "{c:[{v: '$lv $FSinfo'},{v: $LVFSLevel, f: '$LVFSLevel $UNIT'},{v: $LVInFS, f: '$LVInFS $UNIT'},{v: $LVInLV, f: '$LVInLV $UNIT'}]},"; #fill LV and org chart data
}
if ($vg eq 'freespace') {
my $LVslices = $backends{global}{$server}{$lv}{slices};
if ($LVslices) {
$LVslices = "LUNs for this volume: \\n" . $LVslices;
$LVslices = substr $LVslices, 0, -4;
}
$orgRows .= "[{v:'$lv<div class=\"child freespace\">$LVSize $UNIT ($FSType)</div>'},'$vg','$LVslices'],\n";
} elsif ($vmType eq 'lvm2') {
$haveLVM = 1;
$orgRows .= "[{v:'$lv<div class=\"child\">$LVSize $UNIT ($FSType)</div>'},'$vg','Logical volume'],\n";
} elsif ($vmType eq 'btrfs') {
$haveBTRFS = 1;
my $LVslices = $backends{global}{$server}{$lv}{slices};
if ($LVslices) {
$LVslices = "LUNs for this volume: \\n" . $LVslices;
$LVslices = substr $LVslices, 0, -4;
}
if (my $raid = $backends{global}{$server}{$lv}{raidtype}) {
$raid = uc($raid);
$FSType .= ", $raid";
}
$orgRows .= "[{v:'$lv<div class=\"child btrfs\">$LVSize $UNIT ($FSType)</div>'},'$vg','$LVslices'],\n";
} elsif ($vmType eq 'zfs') {
$haveZFS = 1;
my $LVslices = $backends{global}{$server}{$lv}{slices};
if ($LVslices) {
$LVslices = "devices for this pool: \\n" . $LVslices;
$LVslices = substr $LVslices, 0, -4;
}
$orgRows .= "[{v:'$lv<div class=\"child zfs\">$LVSize $UNIT ($FSType)</div>'},'$vg','$LVslices'],\n";
}
$orgcount++;
}
}
#create VG and LV graphs
my $maxInVGGraph = 0;
my $vgcount = 0;
my $vgGrpChart = 0;
foreach my $vg (reverse sort { $vgs{$a}{size} <=> $vgs{$b}{size} } keys %vgs) {
next if ($vg eq 'freespace');
if ($vgcount == 0) {
$maxInVGGraph = $vgs{$vg}{size};
}
if ( ($vgcount && !($vgcount % $BARSPERCHART))
|| ($vgs{$vg}{size} && (($maxInVGGraph / $vgs{$vg}{size})) > $MAXCHARTFACTOR) ) {
#if VG chart is full or bars get too short, create a new one
$javascript .= vgData("${serverID}_$vgGrpChart", $vgRows);
$vgGrpChart++;
$vgRows = '';
$vgcount = 0;
$maxInVGGraph = $vgs{$vg}{size};
}
$vgRows .= $vgs{$vg}{js};
$vgcount++;
}
my %GrpChart;
foreach my $vmType (qw(lvm2 btrfs zfs)) {
my $maxInLVGraph = 0;
my $lvcount = 0;
$GrpChart{$vmType} = 0;
foreach my $lv (reverse sort { $lvs{$vmType}{$a}{size} <=> $lvs{$vmType}{$b}{size} } keys %{$lvs{$vmType}}) {
if ($lvcount == 0) {
$maxInLVGraph = $lvs{$vmType}{$lv}{size};
}
if ( ($lvcount && !($lvcount % $BARSPERCHART))
|| ($lvs{$vmType}{$lv}{size} != 0 && (($maxInLVGraph / $lvs{$vmType}{$lv}{size})) > $MAXCHARTFACTOR) ) {
#if LV chart is full or bars get too short, create a new one
$javascript .= lvData("${serverID}_$GrpChart{$vmType}", $lvRows{$vmType}, $vmType);
$GrpChart{$vmType}++;
$lvRows{$vmType} = '';
$lvcount = 0;
$maxInLVGraph = $lvs{$vmType}{$lv}{size};
}
$lvRows{$vmType} .= $lvs{$vmType}{$lv}{js};
$lvcount++;
}
}
chop $vgRows; #trim last comma
chop $lvRows{lvm2} if ($lvRows{lvm2});
chop $lvRows{btrfs} if ($lvRows{btrfs});
chop $lvRows{zfs} if ($lvRows{zfs});
chop $orgRows;
$javascript .= vgData("${serverID}_$vgGrpChart", $vgRows) if ($vgRows);
$javascript .= lvData("${serverID}_$GrpChart{lvm2}", $lvRows{lvm2}, 'lvm2') if ($haveLVM);
$javascript .= lvData("${serverID}_$GrpChart{btrfs}", $lvRows{btrfs}, 'btrfs') if ($haveBTRFS);
$javascript .= lvData("${serverID}_$GrpChart{zfs}", $lvRows{zfs}, 'zfs') if ($haveZFS);
$javascript .= orgChart("${serverID}_$lvGrpOrg", $orgRows);
$markup .= chartTable($server, $serverID, $orgChart, $vgGrpChart+1, $GrpChart{lvm2}+1, $GrpChart{btrfs}+1, $GrpChart{zfs}+1, $haveLVM, $haveBTRFS, $haveZFS);
#print information about this server
$frontendInfo .= $javascript;
$frontendInfo .= "ENDOFELEMENT";
$frontendInfo .= $markup;
$frontendInfo .= "ENDOFELEMENT";
$frontendInfo .= "$server";
$frontendInfo .= "ENDOFELEMENT";
$frontendInfo .= "$warnings";
$frontendInfo .= "ENDOFELEMENT";
$frontendInfo .= "$grandTotal";
$frontendInfo .= "ENDOFELEMENT";
$frontendInfo .= "$grandTotalUsed";
$frontendInfo .= "ENDOFELEMENT";
$frontendInfo .= "$GLOBALUNIT";
$frontendInfo .= "ENDOFSERVER";
print $frontendInfo;
#clear variables for next server
$javascript = $markup = $warnings = "";
}
}
}
#create backend information orgchart
sub getBackends {
my $i = 0;
my $beGrpOrg = 0;
my $orgcount = 0;
$markup = "<div class=\"orgchart\" id=\"org_chart_backends_0\"></div>\n";
$javascript = '';
my $emptyTable;
my ($orgRows, $BEslices, $FEslices, $VGslices);
foreach my $backend (sort keys %backends) {
my ($class, $j);
next if ($backend eq 'size' || $backend eq 'global');
my $backendSize = $backends{$backend}{size};
$BEslices = "LUNs on this backend: \\n" . $backends{$backend}{slices};
$BEslices = substr $BEslices, 0, -4;
$orgRows .= "[{v: '$backend',f: '$backend<div class=\"parent\">$backendSize $GLOBALUNIT</div>'}, '', '$BEslices'],\n";
foreach my $server (sort keys %{$backends{$backend}}) {
next if (grep /\b$server\b/, qw(size slices));
my $serverSize = $backends{$backend}{$server}{size};
$FEslices = "LUNs for this frontend: \\n" . $backends{$backend}{$server}{slices};
$FEslices = substr $FEslices, 0, -4;
$orgRows .= "[{v: '$server-$backend',f: '$server<div class=\"child\">$serverSize $GLOBALUNIT</div>'}, '$backend', '$FEslices'],\n";
foreach my $vg (sort keys %{$backends{$backend}{$server}}) {
next if (grep /\b$vg\b/, qw(size slices));
my $VGsize = $backends{$backend}{$server}{$vg}{size};
my $vmType = '';
if ( exists $backends{global}{$server}{$vg}{vmtype} ) {
$vmType = $backends{global}{$server}{$vg}{vmtype};
}
if ($vmType eq 'btrfs') {
$VGslices = "LUNs in BTRFS: \\n" . $backends{$backend}{$server}{$vg}{slices};
$VGslices = substr $VGslices, 0, -4;
} elsif ($vmType eq 'zfs') {
$VGslices = "LUNs in ZFS \\n" . $backends{$backend}{$server}{$vg}{slices};
$VGslices = substr $VGslices, 0, -4;
} else { #LVM
$VGslices = "LUNs for this VG: \\n" . $backends{$backend}{$server}{$vg}{slices};
$VGslices = substr $VGslices, 0, -4;
$vmType = 'lvm';
}
if ($orgcount && !($orgcount % $ORGSPERCHART)) { #if org chart is full, create a new one
$javascript .= orgChart("backends_$beGrpOrg", $orgRows);
$beGrpOrg++;
$markup .= "<br /><br /><div class=\"orgchart\" id=\"org_chart_backends_$beGrpOrg\"></div>\n";
$orgRows = "[{v: '$backend',f: '$backend<div class=\"parent\">(cont\\'d)</div>'}, '', '$BEslices'],\n";
$orgRows .= "[{v: '$server-$backend',f: '$server<div class=\"child\">$serverSize $GLOBALUNIT</div>'}, '$backend', '$FEslices'],\n";
}
my $vgName = ($vg eq 'freespace')?'<span class="free">free space</span>':"$vg ($vmType)";
$orgRows .= "[{v: '$vg-$backend-$server',f: '$vgName<div class=\"grandchild\">$VGsize $GLOBALUNIT</div>'}, '$server-$backend', '$VGslices'],\n";
$orgcount++;
}
}
$class = ($i % 2)?'class="bg2"':'class="bg1"';
foreach my $slice (sort keys %{$emptySlices{$backend}}) {
foreach my $vm (sort keys %{$emptySlices{$backend}{$slice}}) {
my $size = $emptySlices{$backend}{$slice}{$vm}{size};
my $unit = $emptySlices{$backend}{$slice}{$vm}{unit};
$emptyTable .= "<tr $class><td>$backend</td><td>$slice</td><td>$vm</td><td class=\"r\">$size $unit</td></tr>\n";
$j = 1;
}
}
$i++ if ($j);
}
$javascript .= orgChart("backends_$beGrpOrg", $orgRows) if ($orgcount);
my $totalChart = pvData('grandtotal', $grandFSLevel, $grandInFS, $grandInLV, $grandInVG, $grandInPV, $grandUnalloc, $grandPVSize, $GLOBALUNIT);
print "BACKENDS";
print "$markup" if ($orgcount);
print "ENDOFELEMENT";
print "<br /><br /><a name=\"slices\"></a><h3 id=\"avail\" align=\"center\">Available slices</h3><table id=\"avail\" align=\"center\"><tr><th>Backend</th><th>Slice</th><th>Volume Mgmt.</th><th>Size</th></tr>$emptyTable</table>" if ($emptyTable);
print "ENDOFELEMENT";
print "$javascript";
print "ENDOFELEMENT";
print "$grandTotal";
print "ENDOFELEMENT";
print "$grandTotalUsed";
print "ENDOFELEMENT";
print "$totalChart";
print "ENDOFELEMENT";
print "$GLOBALUNIT";
print "ENDOFELEMENT";
#create PV diff log
my $changes;
tie(%PVhistory, 'MLDBM', 'PVhistory.db', O_CREAT|O_RDWR, 0666);
my %PVtemp = %{ clone (\%PVhistory) }; #needed b/c direct modify of tied HoH doesn't work
#segfaults but still works?????
foreach my $server (sort keys %PVlayout) {
foreach my $vg (sort keys %{$PVlayout{$server}}) {
foreach my $slice (sort keys %{$PVlayout{$server}{$vg}}) {
if (exists($PVhistory{$server}{$vg}{$slice})) {
delete $PVtemp{$server}{$vg}{$slice};
} else {
$changes .= "<tr><td><span class=\"free\">ADD</span> LUN <i>$slice</i></td><td> to VG <i>$vg</i></td><td> on frontend <i>$server</i></td></tr>\n";
}
}
}
}
foreach my $server (sort keys %PVtemp) {
foreach my $vg (sort keys %{$PVtemp{$server}}) {
foreach my $slice (sort keys %{$PVtemp{$server}{$vg}}) {
if ($PVtemp{$server}{$vg}{$slice}) {
$changes .= "<tr><td><span class=\"remove\">REMOVE</span> LUN <i>$slice</i></td><td> from VG <i>$vg</i></td><td> on frontend <i>$server</i></td></tr>\n";
}
}
}
}
%PVhistory = %{ shared_clone(\%PVlayout) };
untie %PVhistory;
open OLDLOG, "< changelog";
my @oldchanges = <OLDLOG>;
close OLDLOG;
if ($changes) {
my $timestamp = POSIX::strftime("%Y/%m/%d %H:%M:%S", localtime);
$changes = "$timestamp:<br />$changes";
print "<table>$changes</table><br /><br />@oldchanges";
open LOG, "> newlog";
print LOG "<table>$changes</table><br /><br />\n\n\n@oldchanges";
close LOG;
move("newlog", "changelog");
} else {
print "@oldchanges";
}
}
#----------------
sub units {
my ($value, $unit, $globalunit) = @_;
return $value if ($unit eq $globalunit);
if ($globalunit eq 'GB') {
$value *= 1024;
} else {
$value /= 1024;
}
return nearest(.01, $value);
}
sub pvData {
my ($serverID, $PVFSLevel, $PVInFS, $PVInLV, $PVInVG, $PVInPV, $unalloc, $PVSize, $UNIT) = @_;
$PVFSLevel = nearest(.01, $PVFSLevel);
$PVInFS = nearest(.01, $PVInFS);
$PVInLV = nearest(.01, $PVInLV);
$PVInVG = nearest(.01, $PVInVG);
$PVInPV = nearest(.01, $PVInPV);
$unalloc = nearest(.01, $unalloc);
$PVSize = nearest(.01, $PVSize);
return <<EOF;
//pv data
var pv_data_$serverID = new google.visualization.DataTable(
{
cols: [{id:'PV',label:'PV', type:'string'},
{id:'FSFill',label:'$labels{"fsfill"}', type:'number'}, // FSLevel
{id:'UsedInFS',label:'$labels{"infs"}', type:'number'}, // inFS - FSLevel
{id:'inLV',label:'$labels{"inlv"}', type:'number'}, // inLV
{id:'inVG', label:'$labels{"invg"}',type:'number'}, // inVG
{id:'inPV',label:'$labels{"inpv"}',type:'number'}, // inPV
{id:'unalloc',label:'$labels{"unalloc"}',type:'number'} // unallocated space
],
rows: [{c:[{v:'Disk space'},{v: $PVFSLevel, f: '$PVFSLevel $UNIT'},{v: $PVInFS, f: '$PVInFS $UNIT'},{v: $PVInLV, f: '$PVInLV $UNIT'},{v: $PVInVG, f: '$PVInVG $UNIT'},{v: $PVInPV, f: '$PVInPV $UNIT'},{v: $unalloc, f: '$unalloc $UNIT'}]}
]
});
//pv chart
var pv_chart_$serverID = new google.visualization.ColumnChart(document.getElementById('pv_chart_$serverID'));
pv_chart_$serverID.draw(pv_data_$serverID, {'title':'Total disk space overview',
'backgroundColor':'#eee',
'legend': 'right',
'legendTextStyle': {fontSize:10},
'isStacked': true,
'colors':['#3366cc','#3399ff','magenta','#dc3912','#ff9900','#3a3'],
'vAxis': {'title': '$UNIT','gridlineColor':'#808080'},
'hAxis':{'title':'Total: $PVSize$UNIT'}});
EOF
}
sub vgData {
my ($serverID, $vgRows) = @_;
return <<EOF;
//vg data
var vg_data_$serverID = new google.visualization.DataTable(
{
cols: [{id:'VG',label:'VG', type:'string'},
{id:'FSFill', label:'$labels{"fsfill"}',type:'number'}, // FSLevel
{id:'UsedInFS', label:'$labels{"infs"}',type:'number'}, // inFS - FSLevel
{id:'inLV',label:'$labels{"inlv"}', type:'number'}, // inLV
{id:'inVG',label:'$labels{"invg"}', type:'number'} // inVG
],
rows: [$vgRows
]
});
//vg chart
var vg_chart_$serverID = new google.visualization.ColumnChart(document.getElementById('vg_chart_$serverID'));
vg_chart_$serverID.draw(vg_data_$serverID, {'title':'Usage of Volume Groups',
'backgroundColor':'#eee',
'legend': 'right',
'legendTextStyle': {fontSize:10},
'isStacked': true,
'colors':['#3366cc','#3399ff','magenta','#dc3912'],
'vAxis': {'title': '$UNIT','gridlineColor':'#808080'}});
EOF
}
sub lvData {
my ($serverID, $lvRows, $vmType) = @_;
my $output =<<EOF;
//lv data
var lv_data_${vmType}_${serverID} = new google.visualization.DataTable(
{
cols: [{id:'LV',label:'LV', type:'string'},
{id:'FSFill', label:'$labels{"fsfill"}',type:'number'}, // FSLevel
{id:'UsedInFS', label:'$labels{"infs"}',type:'number'} // inFS - FSLevel
EOF
if ($vmType eq 'lvm2') {
$output .=<<EOF
, {id:'inLV',label:'$labels{"inlv"}', type:'number'} // inLV
EOF
}
$output .=<<EOF;
],
rows: [$lvRows
]
});
//lv chart
var lv_chart_${vmType}_${serverID} = new google.visualization.ColumnChart(document.getElementById('lv_chart_${vmType}_${serverID}'));
lv_chart_${vmType}_${serverID}.draw(lv_data_${vmType}_${serverID}, {'title':'Usage of Logical Volumes',
'backgroundColor':'#eee',
'legend': 'right',
'legendTextStyle': {fontSize:10},
'isStacked': true,
'colors':['#3366cc','#3399ff','magenta','#dc3912'],
'vAxis': {'title': '$UNIT', 'gridlineColor':'#808080'}});
EOF
return $output;
}
sub orgChart {
my ($serverID, $orgRows) = @_;
return <<EOF;
//orgchart data
var org_data_$serverID = new google.visualization.arrayToDataTable([
['Name', 'Parent', 'Tooltip'],
['', '', ''],
$orgRows
]);
//orgchart chart
var org_chart_$serverID = new google.visualization.OrgChart(document.getElementById('org_chart_$serverID'));
org_chart_$serverID.draw(org_data_$serverID, {allowHtml: true});
EOF
}
sub chartTable {
my ($server, $serverID, $orgChart, $vgGrpChart, $lvGrpChart, $btrGrpChart, $zfsGrpChart, $haveLVM, $haveBTRFS, $haveZFS) = @_;
my ($chart, %chartRows, %IDs);
for my $id (0..$vgGrpChart-1) {
push @{$IDs{lvm2}}, "vg_chart_${serverID}_$id";
}
for my $id (0..$lvGrpChart-1) {
push @{$IDs{lvm2}}, "lv_chart_lvm2_${serverID}_$id";
}
for my $id (0..$btrGrpChart-1) {
push @{$IDs{btrfs}}, "lv_chart_btrfs_${serverID}_$id";
}
for my $id (0..$zfsGrpChart-1) {
push @{$IDs{zfs}}, "lv_chart_zfs_${serverID}_$id";
}
foreach my $vmType (qw(lvm2 btrfs zfs)) {
my $rows = ceil(scalar @{$IDs{$vmType}} / $CHARTSPERLINE) || 0;
my $num = 0;
for my $row (1..$rows) {
$chartRows{$vmType} .= "<tr>";
for my $chart (1..$CHARTSPERLINE) {
my $td = ($IDs{$vmType}[$num])?"<div class=\"chart\" id=\"$IDs{$vmType}[$num]\"></div>":" ";
$chartRows{$vmType} .= "<td>$td</td>";
$num++;
}
$chartRows{$vmType} .= "</tr>";
}
}
my $LVMchart = '';
my $BTRFSchart = '';
my $ZFSchart = '';
if ($haveLVM) {
$LVMchart =<<EOF
<tr><td><h2>LVM2 overview</h2></td></tr>
$chartRows{lvm2}
EOF
}
if ($haveBTRFS) {
$BTRFSchart =<<EOF
<tr><td><h2>BTRFS overview</h2></td></tr>
$chartRows{btrfs}
EOF
}
if ($haveZFS) {
$ZFSchart =<<EOF
<tr><td><h2>ZFS zpool overview</h2></td></tr>
$chartRows{zfs}
EOF
}
return <<EOF;
<tr><td colspan="3" class="host"><a name="$server"></a>Host $server ($info{$server})</td></tr>
<tr><td><h2>Disk space overview</h2></td></tr>
<tr>
<td>
<div class="chart" id="pv_chart_$serverID"></div>
</td>
</tr>
$LVMchart
$BTRFSchart
$ZFSchart
<tr><tr><td><h2>Volume overview</h2></td></tr>
<td colspan="3">
$orgChart
</td>
</tr>
<tr><td colspan="3"><hr /></td></tr>
EOF
}
sub html {
my $javascript = javascript();
my $css = css();
return <<EOF;
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<title>
VMchart - LVM and BTRFS Monitoring
</title>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
$javascript
</script>
<style type="text/css">
$css
</style>
</head>
<div id="navigation">go to: <span id="linklist"><a href="#frontends">Frontends</a> [<span id="felist"> </span>]</span><span id="total"></span></div>
<div class="header"><a href="https://readme.phys.ethz.ch/services/lvmchart/">VMchart - LVM and BTRFS Monitoring</a></div>
<body onload="init();">
<div id="message"></div>
<div id="grandtotal" style="display: none;">
<a name="grandtotal"></a>
<h1 align="center">Grand total</h1>
<h3 align="center">Last update: $lastUpdate</h3>
<div id="totalchart" align="center"></div>
</div>
<div align="center" id="data"><a name="frontends"></a><h1>Frontend information</h1></div>
<div id="javascr"></div>
<div align="center" id="backends"></div>
<div id="emptySlices"></div>
<hr />
<a name="log"></a><div align="left" id="changes"></div>
<!--[if !IE]>-->
<a name="warnings"></a><div id="warnings"></div>
<!--<![endif]-->
<!--[if IE]>
<div id="warnings">Please make sure you have Internet Explorer's compatibility mode disabled.<br /></div>
<![endif]-->
</body>
</html>
EOF
}
sub css {
return <<EOF;
body {
background: #eee;
font-family: Arial;
border: 0;
padding: 0;
margin: 0;
font-size: 90%;
}
a {
text-decoration: none;
color: #555;
}
a[name] {
padding-top: 40px;
}
.header {
font-size: 240%;
font-weight: bold;
text-align: center;
padding-top: 40px;
}
#navigation {
padding: 4px;
margin: 0;
position: fixed;
background: #444;
color: #fff;
border-bottom: 1px solid #888;
width: 100%;
z-index: 1000;
}
#navigation a {
font-weight: bold;
color: #bbb;
}
#felist {
font-size: 80%;
}
#total {
float: right;
padding-right: 10px;
}
h2 {
border-bottom: 1px solid #aaa;
font-size: 80%;
}
hr {
width: 99%;
}
#warnings {
color: red;
}
td.host {
font-weight: bold;
font-size: 150%;
}
#message {
padding-top: 10px;
color: green;
font-weight: bold;
text-align: center;
}
#counter {
}
div.chart {
width: 450px;
height: 350px;
}
div.parent {
color:#dc3912;
font-style:italic;
}
div.child {
color:#880088;
font-style:italic;
}
div.btrfs {
color:#000088;
}
div.zfs {
color:#000088;
}
div.freespace {
color:#0c0;
}
div.grandchild {
color:#000088;
font-style:italic;
}
div#changes {
padding-left: 20px;
font-size: 80%;
}
span.free {
color:#0d0;
font-weight: bold;
}
span.remove {
color:#f00;
font-weight: bold;
}
#avail {
padding-left: 20px;
}
#avail th {
border-bottom: 2px solid #333;
border-right: 1px solid #aaa;
}
#avail tr.bg1 {
background-color: #ddd;
}
#avail tr.bg2 {
background-color: #bbb;
}
#avail td {
border-bottom: 1px solid #aaa;
border-right: 1px solid #aaa;
padding: 3px;
}
#avail .r {
text-align: right;
}
EOF
}
sub javascript {
return <<EOF;
google.charts.load('current', {'packages':['corechart', 'orgchart'], 'language': 'ch'});
var numberOfServersDisplayed = 0;
var req = (window.XMLHttpRequest) ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP"); // Create Ajax request object
function init(){
//Use ajax to load server data
ajaxLoad("$myself?data", ajaxOnResult);
}
function ajaxLoad(url, callback){
req.open("GET", url, true);
req.send(null);
req.onreadystatechange = callback; //Start ajaxOnResult function after the stream
window.setTimeout( function() {ajaxOnProgress(req);},500);
}
function ajaxOnProgress(req) {
if (req.readyState != 4) { //while the data are received
var msg = document.getElementById("message");
if(msg.innerHTML == ''){
msg.innerHTML = '<div><img src="spinner.gif" /><div id="counter">Loading Server 1 of $numberOfServers</div></div>';
}
ajaxDisplayServer();
window.setTimeout( function() {ajaxOnProgress(req);},500);
}
}
function ajaxDisplayServer(){
if(req.responseText.match(/ENDOFSERVER/g)){
var server = req.responseText.split(/ENDOFSERVER/g); //Split the stream into individual servers
var numberOfServersReceived = server.length -1; //the number of servers in the array
for (i=numberOfServersDisplayed; i< numberOfServersReceived; i++){ //iterate over received server data
var serverdata = server[i].split(/ENDOFELEMENT/g); //Split into elements(js/markup/name/wanings)
var js=serverdata[0];
var markup=serverdata[1];
var servername=serverdata[2];
var warnings=serverdata[3];
var total=serverdata[4];
var totalUsed=serverdata[5];
var unit=serverdata[6];
document.getElementById('warnings').innerHTML += warnings;