1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
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 new {
my ($class, $name) = @_;
$name =~ s/\W/_/g;
$name = substr($name, 0, 63); # max length must be < NAME_LEN / 2 where NAME_LEN is 128
bless { disks => [], VG_name => $name }, $class;
}
sub hasExtended { 0 }
sub adjustStart {}
sub adjustEnd {}
sub write {}
sub cylinder_size {
my ($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 run {
if (my $r = run_program::run(@_)) {
$r;
} else {
$? >> 8 == 98 or return;
#- sometimes, it needs running vgscan again, doing so:
run_program::run('vgscan');
run_program::run(@_);
}
}
sub run_or_die {
my ($prog, @para) = @_;
run($prog, @para) or die "$prog failed\n";
}
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(':', run_program::get_stdout('pvdisplay', '-c', $dev)))[1];
}
sub update_size {
my ($lvm) = @_;
my @l = split(':', run_program::get_stdout('vgdisplay', '-c', '-D', $lvm->{VG_name}));
$lvm->{totalsectors} = ($lvm->{PE_size} = $l[12]) * $l[13];
}
sub get_lv_size {
my ($lvm_device) = @_;
my $info = run_program::get_stdout('lvdisplay', '-D', '-c', "/dev/$lvm_device");
(split(':', $info))[6];
}
sub get_lvs {
my ($lvm) = @_;
my @l = run_program::get_stdout('vgdisplay', '-v', '-D', $lvm->{VG_name});
$lvm->{primary}{normal} =
[
map {
my $type = -e "/dev/$_" && fsedit::typeOfPart("/dev/$_");
{ device => $_,
type => $type || 0x83,
size => get_lv_size($_) }
} map { if_(m|^LV Name\s+/dev/(\S+)|, $1) } @l
];
}
sub vg_add {
my ($part) = @_;
my $dev = expand_symlinks(devices::make($part->{device}));
run_or_die('pvcreate', '-y', '-ff', $dev);
my $prog = run('vgdisplay', $part->{lvm}) ? 'vgextend' : 'vgcreate';
run_or_die($prog, $part->{lvm}, $dev);
}
sub vg_destroy {
my ($lvm) = @_;
is_empty_array_ref($lvm->{primary}{normal}) or die \N("Remove the logical volumes first\n");
run('vgchange', '-a', 'n', $lvm->{VG_name});
run_or_die('vgremove', $lvm->{VG_name});
foreach (@{$lvm->{disks}}) {
delete $_->{lvm};
$_->{isFormatted} = 0;
$_->{notFormatted} = 1;
}
}
sub lv_delete {
my ($lvm, $lv) = @_;
run_or_die('lvremove', '-f', "/dev/$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);
$lv->{device} = "$lvm->{VG_name}/$nb";
run_or_die('lvcreate', '--size', int($lv->{size} / 2) . 'k', '-n', $nb, $lvm->{VG_name});
$lv->{size} = get_lv_size($lv->{device}); #- the created size is smaller than asked size
$lv->{notFormatted} = 1;
$lv->{isFormatted} = 0;
push @$list, $lv;
}
sub lv_resize {
my ($lv, $oldsize) = @_;
run_or_die($oldsize > $lv->{size} ? ('lvreduce', '-f') : 'lvextend',
'--size', int($lv->{size} / 2) . 'k', "/dev/$lv->{device}");
$lv->{size} = get_lv_size($lv->{device}); #- the resized partition may not be the exact asked size
}
1;
|
