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made dev number discovery faster

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This commit is contained in:
Patrick Van der Veken 2020-11-12 16:03:30 +01:00
parent b61aeb3cec
commit bb5ab04731
1 changed files with 21 additions and 6 deletions
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27
lx-lvm/vgs.pl
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@ -42,6 +42,8 @@ $|++;
my ($os, $version, $footer); my ($os, $version, $footer);
my %options; my %options;
my @vgdisplay; my @vgdisplay;
my @lsvg;
my %devs;
my $vg_str_size=15; my $vg_str_size=15;
@ -94,6 +96,21 @@ if ($options{'vg'}) {
} }
die "ERROR: could not retrieve VG info for $options{'vg'}" if ($?); die "ERROR: could not retrieve VG info for $options{'vg'}" if ($?);
# fetch dev numbers
if (!$options{'pe'}) {
my $vg_field; my $vg_name;
@lsvg = `/usr/bin/ls -l /dev/*/group 2>/dev/null`;
foreach my $lsvg (@lsvg) {
$vg_field = (split (/\s+/, $lsvg))[9];
$vg_name = (split (/\//, $vg_field))[2];
if ($vg_name) {
$devs{$vg_name}{'major'} = (split (/\s+/, $lsvg))[4];
$devs{$vg_name}{'minor'} = (split (/\s+/, $lsvg))[5];
}
}
}
# find max display size for VG name # find max display size for VG name
foreach my $vg_entry (@vgdisplay) { foreach my $vg_entry (@vgdisplay) {
@ -169,12 +186,9 @@ foreach my $vg_entry (sort (@vgdisplay)) {
$vg_max /= 1024 unless ($options{'size'} =~ /MB/i); $vg_max /= 1024 unless ($options{'size'} =~ /MB/i);
$vg_max = ceil ($vg_max); $vg_max = ceil ($vg_max);
} }
# get minor number # get major/minor number
$lsvg = `/usr/bin/ls -l /dev/${vg_name}/group 2>/dev/null`; $vg_major = $devs{$vg_name}{'major'} if ($devs{$vg_name}{'major'});
unless ($?) { $vg_minor = $devs{$vg_name}{'minor'} if ($devs{$vg_name}{'minor'});
$vg_major = (split (/\s+/, $lsvg))[4];
$vg_minor = (split (/\s+/, $lsvg))[5];
}
} }
# report data # report data
@ -306,3 +320,4 @@ S< >Do not show header and footer information.
@(#) 2019-02-08: remove /dev/ prefix for VG [Patrick Van der Veken] @(#) 2019-02-08: remove /dev/ prefix for VG [Patrick Van der Veken]
@(#) 2020-03-26: use ceil() to round up to more sensible numbers [Patrick Van der Veken] @(#) 2020-03-26: use ceil() to round up to more sensible numbers [Patrick Van der Veken]
@(#) 2020-11-10: add support for --pe & --pv toggles [Patrick Van der Veken] @(#) 2020-11-10: add support for --pe & --pv toggles [Patrick Van der Veken]
@(#) 2020-11-12: made dev number discovery faster [Patrick Van der Veken]