added support for cluster disks, added --terse
This commit is contained in:
Patrick Van der Veken
parent
7a170b92c2
commit
821a1b245a
175
lx-lvm/pvs.pl
175
lx-lvm/pvs.pl
@ -31,6 +31,7 @@ use warnings;
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use POSIX qw(uname);
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use Getopt::Long;
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use Pod::Usage;
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use Data::Dumper;
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$|++;
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@ -38,10 +39,11 @@ $|++;
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# DATA structures
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#******************************************************************************
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my ($os, $version, $footer);
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my ($os, $version, $footer, $warning);
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my $warn_devices = 500;
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my %options;
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my (@pvol, @vgdisplay);
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my (@pvol, @cvol, @vgdisplay);
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my %cdsf;
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#******************************************************************************
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# SUBroutines
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@ -50,26 +52,82 @@ my (@pvol, @vgdisplay);
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sub parse_pvols {
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my @pvol = @_;
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my @pvdisplay;
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my $pv_command;
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my %pvdisplay;
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my @dsf;
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unless (@pvol) {
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print "-- no disks found --\n";
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return;
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}
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# collect DSF/cDSF & pvol info
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foreach my $pvol (@pvol) {
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my $pv_lvm = 1;
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my (@dsf_data, @cdsf_data);
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my ($dsf, $cdsf, $is_cdsf) = ("","",0);
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chomp ($pvol);
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@pvdisplay = `/usr/sbin/pvdisplay -F /dev/disk/${pvol} 2>&1`;
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$pv_lvm = 0 if ($?) and (grep (/cannot display physical volume/i, @pvdisplay));
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# check for DSF or cDSF?
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if ($pvol =~ m/cdisk/) {
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$pvol =~ s#cdisk/##;
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$is_cdsf = 1;
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# we have the cDSF, get the DSF (should only be 1!)
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@dsf_data = grep (/rcdisk\/${pvol}:/, @cvol);
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($dsf) = (split (/:/, $dsf_data[0]))[1];
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$dsf =~ s#/dev/rdisk/## if (defined ($dsf));
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# save the cDSF
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push (@{$cdsf{$dsf}}, $pvol);
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} else {
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# we have the DSF, get the cDSF (could be >1)
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@cdsf_data = grep (/rdisk\/${pvol}:/, @cvol);
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($dsf = $pvol) =~ s#disk/## if (defined ($dsf));
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# loop over pvdisplay
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if ($pv_lvm) {
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# set cDSF flag if we found cDSFs
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$is_cdsf = 1 if (@cdsf_data);
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foreach my $pv_entry (@pvdisplay) {
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# loop over cDSF data
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foreach my $cdsf_data (@cdsf_data) {
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($cdsf) = (split (/:/, $cdsf_data))[0];
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$cdsf =~ s#/dev/rcdisk/##;
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# save the cDSF
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push (@{$cdsf{$dsf}}, $cdsf) if (defined ($cdsf));
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}
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}
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# pvdisplay on DSF/cDSF (must be correct one!) but record it under $dsf
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# no error handling here, error indicates: inactive/non-LVM stuff
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if ($is_cdsf) {
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# get info of the first cDSF
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@{$pvdisplay{$dsf}} = `/usr/sbin/pvdisplay -F /dev/cdisk/@{$cdsf{$dsf}}[0] 2>/dev/null`;
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} else {
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@{$pvdisplay{$dsf}} = `/usr/sbin/pvdisplay -F /dev/disk/${dsf} 2>/dev/null`;
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}
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push (@dsf, $dsf);
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}
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# display pvol data (sorted by their device number: diskYYYY)
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foreach my $dsf (sort { substr($a, 4) <=> substr($b, 4) } (@dsf)) {
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chomp ($dsf);
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my ($cdsf, $cdsf_bit) = ("","");
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# make cDSF bit
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if (defined (@{$cdsf{$dsf}})) {
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# display only the first cDSF! (in case of multiples)
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$cdsf = @{$cdsf{$dsf}}[0];
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$cdsf_bit = "(".scalar (@{$cdsf{$dsf}}).")";
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} else {
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$cdsf = "n/a";
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}
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if (@{$pvdisplay{$dsf}}) {
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# check for PV data
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foreach my $pv_entry (@{$pvdisplay{$dsf}}) {
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my ($vg_name, $pv_status)= ("","");
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my ($pv_total_pe, $pv_size_pe, $pv_free_pe, $pv_stale_pe) = (0,0,0,0);
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@ -94,18 +152,23 @@ sub parse_pvols {
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$pv_free /= 1024 unless ($options{'size'} =~ /MB/i);
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# report data
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printf STDOUT ("%-20s %-12s %-15s %-7d %-8d %-8d %-8d\n",
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"/dev/disk/${pvol}",
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${vg_name},
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${pv_status},
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${pv_size_pe},
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${pv_size},
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${pv_free},
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${pv_stale_pe})
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printf STDOUT ("%-12s %-10s %-4s %-25s %-20s %-7d %-8d %-8d %-8d\n",
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$dsf,
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$cdsf,
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$cdsf_bit,
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$vg_name,
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$pv_status,
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$pv_size_pe,
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$pv_size,
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$pv_free,
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$pv_stale_pe)
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}
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} else {
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unless ($options{'active'}) {
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printf STDOUT ("%-20s %-12s %-15s\n", "/dev/disk/${pvol}",
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printf STDOUT ("%-12s %-10s %-4s %-25s %-20s\n",
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$dsf,
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$cdsf,
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$cdsf_bit,
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"n/a",
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"not active/not LVM");
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}
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@ -113,6 +176,22 @@ sub parse_pvols {
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}
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}
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sub print_header {
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unless ($options{'terse'}) {
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if (scalar (@pvol) > $warn_devices) {
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$warning = qq{
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WARNING: You have more than $warn_devices disk devices on your system. Collecting the PV information will take some time...
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};
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print STDOUT "$warning";
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}
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printf STDOUT ("\n%-12s %-10s %-4s %-25s %-20s %-7s %-8s %-8s %-8s\n",
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"PV", "cDSF", "(#)", "VG", "Status", "PE Size", "PV Size", "PV Free", "Stale PE");
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}
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}
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#******************************************************************************
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# MAIN routine
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@ -132,6 +211,7 @@ if ( @ARGV > 0 ) {
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size|s=s
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vg|g=s
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active|a
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terse|t
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));
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}
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# check options
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@ -142,36 +222,54 @@ if ($options{'help'}) {
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unless ($options{'size'}) {
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$options{'size'} = 'GB';
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};
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if ($options{'vg'}) {
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if ($options{'vg'} =~ m#/dev#) {
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print STDERR "ERROR: do not specify your VG with '/dev/...'. Only use the short VG name\n\n";
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exit (0);
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}
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# force --active off
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delete $options{'active'};
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};
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# print header
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printf STDOUT ("\n%-20s %-12s %-15s %-7s %-8s %-8s %-8s\n",
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"PV", "VG", "Status", "PE Size", "PV Size", "PV Free", "Stale PE");
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# fetch cDSF map
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@cvol = `/usr/sbin/ioscan -kFN -m cluster_dsf 2>/dev/null`;
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die "ERROR: could not retrieve cDSF info" if ($?);
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# fetch PVOLs (non-boot)
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if ($options{'vg'}) {
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@pvol = `/usr/sbin/vgdisplay -vF "/dev/${options{'vg'}}" 2>/dev/null | grep "^pv_name" | cut -f1 -d':' | cut -f2 -d'=' | cut -f4 -d '/'`;
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die "failed to execute: $!" if ($?);
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# pvols can be cluster-wide or regular disks here! (output: cdisk/diskXXXX or disk/diskYYYY)
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@pvol = `/usr/sbin/vgdisplay -vF "/dev/${options{'vg'}}" 2>/dev/null | grep "^pv_name" | cut -f1 -d':' | cut -f2 -d'=' | cut -f3-4 -d '/'`;
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unless (@pvol) { die "ERROR: could not retrieve VG info for ${options{'vg'}}" };
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print_header;
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parse_pvols (@pvol);
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} else {
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# output: diskYYYY
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@pvol = `/usr/sbin/ioscan -kFN -C disk 2>/dev/null | cut -f9,13 -d':' | tr -d ':'`;
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die "failed to execute: $!" if ($?);
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die "ERROR: could not retrieve ioscan info" if ($?);
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print_header;
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parse_pvols (@pvol);
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# fetch PVOLs (boot)
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print "\n-- Boot disk(s):\n";
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# fetch PVOLs (boot); output: diskYYYY
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unless ($options{'terse'}) { print "\n-- Boot disk(s):\n"; }
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@pvol = `/usr/sbin/lvlnboot -v 2>/dev/null | grep 'Boot Disk' | awk '{ print \$1 }' | cut -f4 -d '/'`;
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die "failed to execute: $!" if ($?);
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die "ERROR: could not retrieve boot info" if ($?);
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parse_pvols (@pvol);
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}
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# footer
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unless ($options{'terse'}) {
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$footer = qq{
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Note 1: 'PE Size' values are expressed in MB
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Note 2: 'PV Size' & 'PV Free' values are expressed in GB by default (see --help)
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Note 3: cDSF: only the first cluster-wide device is shown in case of multiples. The number of cDSF is displayed in
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parentheses following the cDSF name.
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Note 3: more detailed information can be obtained by running the pvdisplay(1M), vgdisplay(1M), lvdisplay(1M) commands
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};
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print STDOUT $footer;
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}
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exit (0);
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@ -195,6 +293,7 @@ pvs.pl - Show physical volume information in a terse way (Linux style).
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[(-g|--vg)=<vg_name>]
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[(-s|--size)=<MB|GB>]
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[(-a|--active)]
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[(-t|--terse)]
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=head1 OPTIONS
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@ -206,22 +305,32 @@ S< >Show the help page.
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=item -a | --active
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S< >Hide non-active and non-LVM disks
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S< >Hide non-active and non-LVM disks. Cannot be used in conjunction with --vg.
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=item -g | --vg
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S< >Display physical volumes for a specific volume group. Volume group name should be specified without the "/dev/" prefix
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S< >Display physical volumes for a specific volume group. Volume group name should be specified without the "/dev/" prefix.
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=item -s | --size
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S< >Show physical volume size in MB or GB (default is GB).
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=item -t | --terse
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S< >Do not show header and footer information.
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=head1 NOTE
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Collecting & displaying the data might take a considerable amount of time depending
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on the amount of devices present on the system.
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=head1 AUTHOR
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(c) KUDOS BVBA - Patrick Van der Veken
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=head1 history
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@(#) 2016-04-12: VRF 1.0.0: first version [Patrick Van der Veken]
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@(#) 2016-04-27: VRF 1.0.1: small fixes [Patrick Van der Veken]
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@(#) 2016-04-27: VRF 1.1.0: show all PVOLs & option --active added [Patrick Van der Veken]
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@(#) 2016-04-12: first version [Patrick Van der Veken]
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@(#) 2016-04-27: small fixes [Patrick Van der Veken]
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@(#) 2016-04-27: show all PVOLs & option --active added [Patrick Van der Veken]
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@(#) 2017-12-12: added support for cluster disks, added --terse [Patrick Van der Veken]
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