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package lvm; # $Id$
use diagnostics;
use strict;
#-######################################################################################
#- misc imports
#-######################################################################################
use common;
use modules;
use fsedit;
use devices;
use run_program;
#- for partition_table_xxx emulation
sub hasExtended { 0 }
sub adjustStart {}
sub adjustEnd {}
sub write {}
sub cylinder_size {
my ($hd) = @_;
$hd->{PE_size};
}
init();
sub init {
eval { modules::load('lvm-mod') };
run_program::run('vgscan') if !-e '/etc/lvmtab';
run_program::run('vgchange', '-a', 'y');
}
sub check {
my ($in) = @_;
my $f = '/sbin/pvcreate';
-e $f or $in->do_pkgs->install('lvm');
-e $f or $in->ask_warn('', "Mandatory package lvm is missing"), return;
init();
1;
}
sub get_vg {
my ($part) = @_;
my $dev = expand_symlinks(devices::make($part->{device}));
(split(':', `pvdisplay -c $dev`))[1];
}
sub update_size {
my ($lvm) = @_;
my @l = split(':', `vgdisplay -c -D $lvm->{LVMname}`);
$lvm->{totalsectors} = ($lvm->{PE_size} = $l[12]) * $l[13];
}
sub get_lvs {
my ($lvm) = @_;
$lvm->{primary}{normal} =
[
map {
my $type = -e $_ && fsedit::typeOfPart($_);
{ device => $_,
type => $type || 0x83,
size => (split(':', `lvdisplay -D -c $_`))[6] }
} map { /^LV Name\s+(\S+)/ ? $1 : () } `vgdisplay -v -D $lvm->{LVMname}`
];
}
sub vg_add {
my ($part) = @_;
if (my $old_name = get_vg($part)) {
run_program::run('vgchange', '-a', 'n', $old_name);
run_program::run('vgremove', $old_name);
}
my $dev = expand_symlinks(devices::make($part->{device}));
run_program::run_or_die('pvcreate', $dev);
my $prog = run_program::run('vgdisplay', $part->{lvm}) ? 'vgextend' : 'vgcreate';
run_program::run_or_die($prog, $part->{lvm}, $dev);
}
sub vg_destroy {
my ($lvm) = @_;
is_empty_array_ref($lvm->{primary}{normal}) or die _("Remove the logical volumes first\n");
run_program::run('vgchange', '-a', 'n', $lvm->{LVMname});
run_program::run_or_die('vgremove', $lvm->{LVMname});
foreach (@{$lvm->{disks}}) {
delete $_->{lvm};
$_->{isFormatted} = 0;
$_->{notFormatted} = 1;
}
}
sub lv_delete {
my ($lvm, $lv) = @_;
run_program::run_or_die('lvremove', '-f', $lv->{device});
my $list = $lvm->{primary}{normal};
@$list = grep { $_ != $lv } @$list;
}
sub lv_create {
my ($lvm, $lv) = @_;
my $list = $lvm->{primary}{normal};
my $nb = 1 + max(map { basename($_->{device}) } @$list);
$lv->{device} = "/dev/$lvm->{LVMname}/$nb";
run_program::run_or_die('lvcreate', '--size', int($lv->{size} / 2) . 'k', '-n', $nb, $lvm->{LVMname});
push @$list, $lv;
}
1;
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