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made VG name display size dynamic, added --active, added --terse

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This commit is contained in:
Patrick Van der Veken 2017-12-12 10:51:48 +01:00
parent 4c8ba61b88
commit a314a065e5
1 changed files with 64 additions and 23 deletions
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87
lx-lvm/vgs.pl
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@ -42,6 +42,7 @@ $|++;
my ($os, $version, $footer);
my %options;
my @vgdisplay;
my $vg_str_size=15;
#******************************************************************************
@ -61,6 +62,8 @@ if ( @ARGV > 0 ) {
help|h|?
size|s=s
vg|g=s
active|a
terse|t
));
}
# check options
@ -71,10 +74,14 @@ if ($options{'help'}) {
unless ($options{'size'}) {
$options{'size'} = 'GB';
};
# print header
printf STDOUT ("\n%-15s %-5s %-5s %-20s %-8s %-8s %-10s %-10s %-10s %-12s\n",
"VG", "PVs", "LVs", "Status", "Version", "PE Size", "VG Size", "VG Free", "VG Max", "VG Major/Minor");
if ($options{'vg'}) {
if ($options{'vg'} =~ m#/dev#) {
print STDERR "ERROR: do not specify your VG with '/dev/...'. Only use the short VG name\n\n";
exit (0);
}
# force --active off
delete $options{'active'};
};
# fetch vgdisplay
if ($options{'vg'}) {
@ -82,11 +89,29 @@ if ($options{'vg'}) {
} else {
@vgdisplay = `/usr/sbin/vgdisplay -F 2>/dev/null`;
}
die "failed to execute: $!" if ($?);
die "ERROR: could not retrieve VG info for $options{'vg'}" if ($?);
# loop over vgdisplay
# find max display size for VG name
foreach my $vg_entry (@vgdisplay) {
my @vg_data = split (/:/, $vg_entry);
my $str_size = 0;
# loop over VG data
foreach my $vg_field (@vg_data) {
$str_size = length ($1) if ($vg_field =~ m%^vg_name=/dev/(.*)%);
$vg_str_size = $str_size if ($str_size > $vg_str_size);
}
}
# print header
unless ($options{'terse'}) {
printf STDOUT ("\n%-${vg_str_size}s %-5s %-5s %-20s %-8s %-8s %-10s %-10s %-10s %-12s\n",
"VG", "PVs", "LVs", "Status", "Version", "PE Size", "VG Size", "VG Free", "VG Max", "VG Major/Minor");
}
# loop over vgdisplay (ASCII sorted)
foreach my $vg_entry (sort (@vgdisplay)) {
my ($vg_name, $vg_status, $vg_version, $lsvg, $vg_major, $vg_minor,) = ("","","n/a","","n/a","n/a");
my ($vg_total_pe, $vg_size_pe, $vg_free_pe, $vg_cur_pvs, $vg_cur_lvs, $vg_max_pe) = (0,0,0,0,0,0);
@ -127,28 +152,33 @@ foreach my $vg_entry (@vgdisplay) {
}
# report data
printf STDOUT ("%-15s %-5s %-5s %-20s %-8s %-8d %-10d %-10d %-10d %3s/%-8s\n",
${vg_name},
${vg_cur_pvs},
${vg_cur_lvs},
${vg_status},
${vg_version},
${vg_size_pe},
${vg_size},
${vg_free},
${vg_max},
${vg_major},
${vg_minor})
unless ($options{'active'} and ($vg_status eq "deactivated")) {
printf STDOUT ("%-${vg_str_size}s %-5s %-5s %-20s %-8s %-8d %-10d %-10d %-10d %3s/%-8s\n",
$vg_name,
$vg_cur_pvs,
$vg_cur_lvs,
$vg_status,
$vg_version,
$vg_size_pe,
$vg_size,
$vg_free,
$vg_max,
$vg_major,
$vg_minor)
}
}
# footer
$footer = qq{
unless ($options{'terse'}) {
$footer = qq{
Note 1: 'PE Size' values are expressed in MB
Note 2: 'VG Size', 'VG Free', 'VG Max' values are expressed in GB by default (see --help)
Note 3: more detailed information can be obtained by running the pvdisplay(1M), vgdisplay(1M), lvdisplay(1M) commands
};
print STDOUT $footer;
print STDOUT $footer;
};
exit (0);
@ -171,6 +201,8 @@ vgs.pl - Show volume group information in a terse way (Linux style).
vgs.pl [-h|--help]
[(-g|--vg)=<vg_name>]
[(-s|--size)=<MB|GB>]
[(-a|--active)]
[(-t|--terse)]
=head1 OPTIONS
@ -180,6 +212,10 @@ vgs.pl - Show volume group information in a terse way (Linux style).
S< >Show the help page.
=item -a | --active
S< >Hide non-active VGs. Cannot be used in conjunction with --vg.
=item -g | --vg
S< >Display information for a specific volume group.
@ -188,11 +224,16 @@ S< >Display information for a specific volume group.
S< >Show volume group sizes in MB or GB (default is GB).
=item -t | --terse
S< >Do not show header and footer information.
=head1 AUTHOR
(c) KUDOS BVBA - Patrick Van der Veken
=head1 history
@(#) 2016-04-12: VRF 1.0.0: first version [Patrick Van der Veken]
@(#) 2016-04-27: VRF 1.0.1: added 'VG Major/Minor' [Patrick Van der Veken]
@(#) 2016-04-12: first version [Patrick Van der Veken]
@(#) 2016-04-27: added 'VG Major/Minor' [Patrick Van der Veken]
@(#) 2017-12-12: made VG name display size dynamic, added --active, added --terse [Patrick Van der Veken]