| [2118] | 1 | #!/usr/bin/perl -w
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| 2 | #
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| [2648] | 3 | # Subroutines related to LVM brought by the MondoRescue project
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| [2118] | 4 | #
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| 5 | # $Id$
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| 6 | #
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| [2558] | 7 | # Copyright B. Cornec 2008-2010
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| [2118] | 8 | # Provided under the GPL v2
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| 9 |
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| [2540] | 10 | package MondoRescue::LVM;
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| [2118] | 11 |
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| 12 | use strict 'vars';
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| 13 | use Data::Dumper;
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| 14 | use English;
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| 15 | use lib qw (lib);
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| 16 | use ProjectBuilder::Base;
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| 17 | use ProjectBuilder::Conf;
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| [2541] | 18 | use MondoRescue::Base;
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| [2118] | 19 |
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| 20 | # Inherit from the "Exporter" module which handles exporting functions.
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| 21 |
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| 22 | use Exporter;
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| 23 |
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| 24 | # Export, by default, all the functions into the namespace of
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| 25 | # any code which uses this module.
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| 26 |
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| 27 | our @ISA = qw(Exporter);
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| [2558] | 28 | our @EXPORT = qw(mr_lvm_check mr_lvm_get_conf mr_lvm_read_conf mr_lvm_write_conf mr_lvm_edit_conf mr_lvm_apply_from_conf);
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| [2118] | 29 |
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| 30 | =pod
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| 31 |
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| 32 | =head1 NAME
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| 33 |
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| [2558] | 34 | MondoRescue::LVM, part of the mondorescue.org
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| [2118] | 35 |
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| 36 | =head1 DESCRIPTION
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| 37 |
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| [2558] | 38 | This modules provides low level functions for LVM support in the Mondorescue project
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| [2118] | 39 |
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| 40 | =head1 USAGE
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| 41 |
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| 42 | =over 4
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| 43 |
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| 44 | =item B<mr_lvm_check>
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| 45 |
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| 46 | This function checks the usage of LVM and gets the version used
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| 47 | It returns 2 parameters, the LVM version, and the lvm command to use if needed
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| [2558] | 48 | The LVM version could be undef, 0 (no LVM), 1 or 2 at the moment, or further not yet supported version
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| 49 | It potentially takes one parameter, the LVM version, already known, in which case it easily deduced the LVM command.
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| 50 | If LVM version is undefined then no LVM Handling should be done.
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| 51 | It has to run on on a system where LVM is activated to return useful results so typically on the system to backup
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| [2118] | 52 |
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| 53 | =cut
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| 54 |
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| 55 | sub mr_lvm_check {
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| 56 |
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| [2558] | 57 | my $lvmver = shift;
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| 58 |
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| [2149] | 59 | # Get params from the conf file
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| 60 | my ($lvmds_t,$lvmproc_t,$lvmcmd_t,$lvmpath_t) = pb_conf_get("mr_lvmdiskscan","mr_lvmprocfile","mr_lvmcmd","mr_lvmpath");
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| [2540] | 61 | my $lvmds = $lvmds_t->{$ENV{PBPROJ}};
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| 62 | my $lvmproc = $lvmproc_t->{$ENV{PBPROJ}};
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| 63 | my $lvmcmd = $lvmcmd_t->{$ENV{PBPROJ}};
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| 64 | my $lvmpath = $lvmpath_t->{$ENV{PBPROJ}};
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| [2118] | 65 |
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| [2541] | 66 | # That file is not mandatory anymore
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| [2558] | 67 | if (not defined $lvmver) {
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| 68 | if (! -x $lvmproc) {
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| 69 | pb_log(1,"$lvmproc doesn't exist\n");
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| 70 | } else {
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| 71 | # Check LVM volumes presence
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| 72 | pb_log(2,"Checking with $lvmproc\n");
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| 73 | open(LVM,$lvmproc) || mr_exit(-1,"Unable to open $lvmproc");
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| 74 | while (<LVM>) {
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| 75 | if (/0 VGs 0 PVs 0 LVs/) {
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| 76 | pb_log(1,"No LVM volumes found in $lvmproc\n");
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| 77 | return(0,undef);
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| 78 | }
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| [2541] | 79 | }
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| [2558] | 80 | close(LVM);
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| [2149] | 81 | }
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| [2118] | 82 | }
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| 83 |
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| 84 | # Check LVM version
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| [2558] | 85 | if (not defined $lvmver) {
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| 86 | pb_log(2,"LVM version value is not known\n");
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| 87 | if (-x $lvmds) {
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| 88 | pb_log(2,"Checking with $lvmds\n");
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| 89 | open(LVM,"$lvmds --help 2>&1 |") || mr_exit(-1,"Unable to execute $lvmds");
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| 90 | while (<LVM>) {
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| 91 | if (/Logical Volume Manager/ || /LVM version:/) {
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| [2118] | 92 | $lvmver = $_;
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| [2541] | 93 | chomp($lvmver);
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| [2118] | 94 | $lvmver =~ s/:([0-9])\..*/$1/;
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| [2558] | 95 | }
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| [2118] | 96 | }
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| [2558] | 97 | close(LVM);
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| 98 | pb_log(2,"Found a LVM version of $lvmver with $lvmds --help\n") if (defined $lvmver);
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| [2118] | 99 | }
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| 100 | }
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| 101 |
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| [2558] | 102 | if (not defined $lvmver) {
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| [2541] | 103 | pb_log(2,"LVM version value is still not known\n");
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| [2118] | 104 | if (-x $lvmcmd) {
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| [2541] | 105 | pb_log(2,"Checking with $lvmcmd\n");
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| [2118] | 106 | open(LVM,"$lvmcmd version |") || mr_exit(-1,"Unable to execute $lvmcmd");
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| 107 | while (<LVM>) {
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| 108 | if (/LVM version/) {
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| 109 | $lvmver = $_;
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| [2541] | 110 | chomp($lvmver);
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| 111 | $lvmver =~ s/:([0-9])\..*/$1/;
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| 112 | $lvmver =~ s/[\s]*LVM version[:]*[\s]+([0-9])\..*/$1/;
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| [2118] | 113 | }
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| 114 | }
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| 115 | close(LVM);
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| [2558] | 116 | pb_log(2,"Found a LVM version of $lvmver with $lvmcmd version\n") if (defined $lvmver);
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| [2118] | 117 | }
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| 118 | }
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| 119 |
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| [2558] | 120 | if (not defined $lvmver) {
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| [2118] | 121 | # Still not found
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| [2558] | 122 | mr_log(0,"Unable to determine LVM version.\nIf you think this is wrong, please report to the dev team with the result of the commands:\n$lvmds --help and $lvmcmd version\n");
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| [2118] | 123 | } elsif ($lvmver == 1) {
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| [2149] | 124 | $lvmcmd = "$lvmpath";
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| 125 | } elsif ($lvmver == 2) {
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| 126 | $lvmcmd .= " ";
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| 127 | } else {
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| [2541] | 128 | pb_log(0,"Unknown LVM version $lvmver\n");
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| [2118] | 129 | }
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| [2149] | 130 | # Here $lvmcmd contains a full path name
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| [2541] | 131 | pb_log(1,"Found LVM version $lvmver\n");
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| [2118] | 132 | return ($lvmver,$lvmcmd);
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| 133 |
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| 134 | }
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| 135 |
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| [2149] | 136 | =over 4
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| 137 |
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| [2558] | 138 | =item B<mr_lvm_get_conf>
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| 139 |
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| 140 | This function returns 1 parameters, the LVM structure or undef if no LVM
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| 141 | That LVM structure contains all the information related to the current LVM configuration
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| 142 |
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| 143 | =cut
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| 144 |
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| 145 | sub mr_lvm_get_conf {
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| 146 |
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| 147 | my $lvm = undef;
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| 148 |
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| 149 | my ($lvmver,$lvmcmd) = mr_lvm_check();
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| 150 | return(undef) if ((not defined $lvmver) || ($lvmver == 0));
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| 151 |
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| 152 | # Analyze the existing physical volumes
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| 153 | open(LVM,$lvmcmd."pvs --noheadings --nosuffix --units m --separator : -o pv_name,vg_name,pv_all,pv_fmt,pv_uuid,dev_size,pv_mda_free,pv_mda_size |") || mr_exit(-1,"Unable to execute ".$lvmcmd."pvs");
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| 154 | while (<LVM>) {
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| 155 | s/^[\s]*//;
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| 156 |
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| 157 | my ($pv_name,$vg_name,$pe_start,$pv_size,$pv_free,$pv_used,$pv_attr,$pv_pe_count,$pv_pe_alloc_count,$pv_tags,$pv_mda_count,$pv_uuid,$dev_size,$pv_mda_free,$pv_mda_size) = split(/:/);
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| 158 |
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| 159 | =pod
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| 160 |
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| 161 | The LVM hash is indexed by VGs, provided by the vg_name attribute of the pvs command
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| 162 | vg_name - Name of the volume group linked to this PV
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| 163 |
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| 164 | =cut
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| 165 |
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| 166 | $lvm->{$vg_name}->{'pvnum'}++;
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| 167 |
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| 168 | =pod
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| 169 |
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| 170 | The structure contains an array of PVs called pvs and starting at 1, containing the name of the PV as provided by the pv_name attribute of the pvs command
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| 171 | pv_name - Name of the physical volume PV
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| 172 |
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| 173 | =cut
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| 174 |
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| 175 | # Array of PVs for that VG
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| 176 | $lvm->{$vg_name}->{'pvs'}->[$lvm->{$vg_name}->{'pvnum'}] = $pv_name;
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| 177 |
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| 178 | =pod
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| 179 |
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| 180 | All the PV fields from the pvs command are gathered under their PV name (substructure)
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| 181 | The following names are used:
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| 182 |
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| 183 | From pvs -o help
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| 184 | pe_start - Offset to the start of data on the underlying device.
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| 185 | pv_size - Size of PV in current units.
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| 186 | pv_free - Total amount of unallocated space in current units.
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| 187 | pv_used - Total amount of allocated space in current units.
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| 188 | pv_attr - Various attributes - see man page.
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| 189 | pv_pe_count - Total number of Physical Extents.
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| 190 | pv_pe_alloc_count - Total number of allocated Physical Extents.
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| 191 | pv_tags - Tags, if any.
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| 192 | pv_mda_count - Number of metadata areas on this device.
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| 193 | pv_fmt - Type of metadata.
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| 194 | pv_uuid - Unique identifier.
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| 195 | dev_size - Size of underlying device in current units.
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| 196 | pv_mda_free - Free metadata area space on this device in current units.
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| 197 | pv_mda_size - Size of smallest metadata area on this device in current units.
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| 198 |
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| 199 | =cut
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| 200 |
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| 201 | $lvm->{$vg_name}->{$pv_name}->{'pe_start'} = $pe_start;
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| 202 | $lvm->{$vg_name}->{$pv_name}->{'pv_size'} = $pv_size;
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| 203 | $lvm->{$vg_name}->{$pv_name}->{'pv_free'} = $pv_free;
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| 204 | $lvm->{$vg_name}->{$pv_name}->{'pv_used'} = $pv_used;
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| 205 | $lvm->{$vg_name}->{$pv_name}->{'pv_attr'} = $pv_attr;
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| 206 | $lvm->{$vg_name}->{$pv_name}->{'pv_pe_count'} = $pv_pe_count;
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| 207 | $lvm->{$vg_name}->{$pv_name}->{'pv_pe_alloc_count'} = $pv_pe_alloc_count;
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| 208 | $lvm->{$vg_name}->{$pv_name}->{'pv_tags'} = $pv_tags;
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| 209 | $lvm->{$vg_name}->{$pv_name}->{'pv_mda_count'} = $pv_mda_count;
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| 210 | $lvm->{$vg_name}->{$pv_name}->{'pv_uuid'} = $pv_uuid;
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| 211 | $lvm->{$vg_name}->{$pv_name}->{'dev_size'} = $dev_size;
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| 212 | $lvm->{$vg_name}->{$pv_name}->{'pv_mda_free'} = $pv_mda_free;
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| 213 | $lvm->{$vg_name}->{$pv_name}->{'pv_mda_size'} = $pv_mda_size;
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| 214 | }
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| 215 | close(LVM);
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| 216 |
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| 217 | # Analyze the existing volume groups
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| 218 | #open(LVM,$lvmcmd."vgdisplay -c |") || mr_exit(-1,"Unable to execute ".$lvmcmd."vgdisplay -c");
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| 219 | open(LVM,$lvmcmd."vgs --noheadings --nosuffix --units m --separator : | -o vg_all") || mr_exit(-1,"Unable to execute ".$lvmcmd."vgs");
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| 220 | while (<LVM>) {
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| 221 |
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| 222 | =pod
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| 223 |
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| 224 | All the VG fields from the vgs command are gathered under the VG name
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| 225 | The following names are used:
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| 226 |
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| 227 | From vgs -o help
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| 228 | vg_fmt - Type of metadata.
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| 229 | vg_uuid - Unique identifier.
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| 230 | vg_attr - Various attributes - see man page.
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| 231 | vg_size - Total size of VG in current units.
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| 232 | vg_free - Total amount of free space in current units.
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| 233 | vg_sysid - System ID indicating when and where it was created.
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| 234 | vg_extent_size - Size of Physical Extents in current units.
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| 235 | vg_extent_count - Total number of Physical Extents.
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| 236 | vg_free_count - Total number of unallocated Physical Extents.
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| 237 | max_lv - Maximum number of LVs allowed in VG or 0 if unlimited.
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| 238 | max_pv - Maximum number of PVs allowed in VG or 0 if unlimited.
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| 239 | pv_count - Number of PVs.
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| 240 | lv_count - Number of LVs.
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| 241 | snap_count - Number of snapshots.
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| 242 | vg_seqno - Revision number of internal metadata. Incremented whenever it changes.
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| 243 | vg_tags - Tags, if any.
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| 244 | vg_mda_count - Number of metadata areas in use by this VG.
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| 245 | vg_mda_free - Free metadata area space for this VG in current units.
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| 246 | vg_mda_size - Size of smallest metadata area for this VG in current units.
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| 247 |
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| 248 | =cut
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| 249 | s/^[\s]*//;
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| 250 | my ($vg_fmt,$vg_uuid,$vg_name,$vg_attr,$vg_size,$vg_free,$vg_sysid,$vg_extend_size,$vg_extend_count,$vg_free_count,$max_lv,$max_pv,$pv_count,$lv_count,$snap_count,$vg_seqno,$vg_tags,$vg_mda_count,$vg_mda_free,$vg_mda_size) = split(/:/);
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| 251 | $lvm->{$vg_name}->{'vg_fmt'} = $vg_fmt;
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| 252 | $lvm->{$vg_name}->{'vg_uuid'} = $vg_uuid;
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| 253 | $lvm->{$vg_name}->{'vg_attr'} = $vg_attr;
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| 254 | $lvm->{$vg_name}->{'vg_size'} = $vg_size;
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| 255 | $lvm->{$vg_name}->{'vg_free'} = $vg_free;
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| 256 | $lvm->{$vg_name}->{'vg_sysid'} = $vg_sysid;
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| 257 | $lvm->{$vg_name}->{'vg_extend_size'} = $vg_extend_size;
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| 258 | $lvm->{$vg_name}->{'vg_extend_count'} = $vg_extend_count;
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| 259 | $lvm->{$vg_name}->{'vg_free_count'} = $vg_free_count;
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| 260 | $lvm->{$vg_name}->{'max_lv'} = $max_lv;
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| 261 | $lvm->{$vg_name}->{'max_pv'} = $max_pv;
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| 262 | $lvm->{$vg_name}->{'pv_count'} = $pv_count;
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| 263 | $lvm->{$vg_name}->{'lv_count'} = $lv_count;
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| 264 | $lvm->{$vg_name}->{'snap_count'} = $snap_count;
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| 265 | $lvm->{$vg_name}->{'vg_seqno'} = $vg_seqno;
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| 266 | $lvm->{$vg_name}->{'vg_tags'} = $vg_tags;
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| 267 | $lvm->{$vg_name}->{'vg_mda_count'} = $vg_mda_count;
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| 268 | $lvm->{$vg_name}->{'vg_mda_free'} = $vg_mda_free;
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| 269 | $lvm->{$vg_name}->{'vg_mda_size'} = $vg_mda_size;
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| 270 | }
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| 271 | close(LVM);
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| 272 |
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| 273 | # Analyze the existing logical volumes
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| 274 | #open(LVM,$lvmcmd."lvdisplay -c |") || mr_exit(-1,"Unable to execute ".$lvmcmd."lvdisplay -c");
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| 275 | open(LVM,$lvmcmd."lvs --noheadings --nosuffix --units m --separator : -o vg_name,lv_all|") || mr_exit(-1,"Unable to execute ".$lvmcmd."lvs");
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| 276 | while (<LVM>) {
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| 277 | s/^[\s]*//;
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| 278 |
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| [2647] | 279 | my ($vg_name,$lv_uuid,$lv_name,$lv_attr,$lv_major,$lv_minor,$lv_read_ahead,$lv_kernel_major,$lv_kernel_minor,$lv_kernel_read_ahead,$lv_size,$seg_count,$origin,$origin_size,$snap_percent,$copy_percent,$move_pv,$convert_lv,$lv_tags,$mirror_log,$modules) = split(/:/);
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| [2558] | 280 | =pod
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| 281 |
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| 282 | The structure contains an array of LVs called lvs and starting at 1, containing the name of the PV as provided by the pv_name attribute of the pvs command
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| 283 | pv_name - Name of the physical volume PV
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| 284 |
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| 285 | =cut
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| 286 |
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| 287 | # Array of PVs for that VG
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| 288 | $lvm->{$vg_name}->{'pvs'}->[$lvm->{$vg_name}->{'pvnum'}] = $pv_name;
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| 289 |
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| 290 | =pod
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| 291 |
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| 292 | All the PV fields from the pvs command are gathered under their PV name (substructure)
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| 293 | The following names are used:
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| 294 |
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| 295 |
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| 296 | # From lvs -o help
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| 297 |
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| 298 | #vg_name - Name of the related volume group
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| 299 | #lv_uuid - Unique identifier.
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| 300 | #lv_name - Name. LVs created for internal use are enclosed in brackets.
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| 301 | #lv_attr - Various attributes - see man page.
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| 302 | #lv_major - Persistent major number or -1 if not persistent.
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| 303 | #lv_minor - Persistent minor number or -1 if not persistent.
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| 304 | #lv_read_ahead - Read ahead setting in current units.
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| 305 | #lv_kernel_major - Currently assigned major number or -1 if LV is not active.
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| 306 | #lv_kernel_minor - Currently assigned minor number or -1 if LV is not active.
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| 307 | #lv_kernel_read_ahead - Currently-in-use read ahead setting in current units.
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| 308 | #lv_size - Size of LV in current units.
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| 309 | #seg_count - Number of segments in LV.
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| 310 | #origin - For snapshots, the origin device of this LV.
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| 311 | #origin_size - For snapshots, the size of the origin device of this LV.
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| 312 | #snap_percent - For snapshots, the percentage full if LV is active.
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| 313 | #copy_percent - For mirrors and pvmove, current percentage in-sync.
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| 314 | #move_pv - For pvmove, Source PV of temporary LV created by pvmove.
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| 315 | #convert_lv - For lvconvert, Name of temporary LV created by lvconvert.
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| 316 | #lv_tags - Tags, if any.
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| 317 | #mirror_log - For mirrors, the LV holding the synchronisation log.
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| 318 | #modules - Kernel device-mapper modules required for this LV.
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| 319 |
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| 320 | =cut
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| 321 |
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| 322 | # The LVM hash is indexed by VGs
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| 323 | $lvm->{$vg_name}->{'lvnum'}++;
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| 324 | # That array will start at 1 then
|
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| 325 | # Array of LVs for that VG
|
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| 326 | $lvm->{$vg_name}->{'lvs'}->[$lvm->{$vg_name}->{'lvnum'}] = $lv_name;
|
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| 327 | # All LV fields gathered under the LV name
|
|---|
| 328 | $lvm->{$vg_name}->{$lv_name}->{'lv_uuid'} = $lv_uuid;
|
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| 329 | $lvm->{$vg_name}->{$lv_name}->{'lv_attr'} = $lv_attr;
|
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| 330 | $lvm->{$vg_name}->{$lv_name}->{'lv_major'} = $lv_major;
|
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| 331 | $lvm->{$vg_name}->{$lv_name}->{'lv_minor'} = $lv_minor;
|
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| 332 | $lvm->{$vg_name}->{$lv_name}->{'lv_read_ahead'} = $lv_read_ahead;
|
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| 333 | $lvm->{$vg_name}->{$lv_name}->{'lv_kernel_major'} = $lv_kernel_major;
|
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| 334 | $lvm->{$vg_name}->{$lv_name}->{'lv_kernel_minor'} = $lv_kernel_minor;
|
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| 335 | $lvm->{$vg_name}->{$lv_name}->{'lv_kernel_read_ahead'} = $lv_kernel_read_ahead;
|
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| 336 | $lvm->{$vg_name}->{$lv_name}->{'lv_size'} = $lv_size;
|
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| 337 | $lvm->{$vg_name}->{$lv_name}->{'origin'} = $origin;
|
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| 338 | $lvm->{$vg_name}->{$lv_name}->{'origin_size'} = $origin_size;
|
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| 339 | $lvm->{$vg_name}->{$lv_name}->{'snap_percent'} = $snap_percent;
|
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| 340 | $lvm->{$vg_name}->{$lv_name}->{'copy_percent'} = $copy_percent;
|
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| 341 | $lvm->{$vg_name}->{$lv_name}->{'move_pv'} = $move_pv;
|
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| 342 | $lvm->{$vg_name}->{$lv_name}->{'convert_lv'} = $convert_lv;
|
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| 343 | $lvm->{$vg_name}->{$lv_name}->{'lv_tags'} = $lv_tags;
|
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| 344 | $lvm->{$vg_name}->{$lv_name}->{'mirror_log'} = $mirror_log;
|
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| 345 | $lvm->{$vg_name}->{$lv_name}->{'modules'} = $modules;
|
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| 346 | }
|
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| 347 | close(LVM);
|
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| 348 | return($lvm);
|
|---|
| 349 | }
|
|---|
| 350 |
|
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| [2149] | 351 | =item B<mr_lvm_analyze>
|
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| 352 |
|
|---|
| 353 | This function outputs in a file descriptor the LVM analysis done
|
|---|
| 354 | It returns 1 parameters, the LVM version or 0 if no LVM
|
|---|
| 355 |
|
|---|
| 356 | =cut
|
|---|
| 357 |
|
|---|
| 358 | sub mr_lvm_analyze {
|
|---|
| 359 |
|
|---|
| 360 | my $OUTPUT = shift;
|
|---|
| 361 |
|
|---|
| 362 | my ($lvmver,$lvmcmd) = mr_lvm_check();
|
|---|
| [2558] | 363 | my $lvm = mr_lvm_get_conf();
|
|---|
| 364 | return(undef) if ($lvmver == 0);
|
|---|
| [2149] | 365 |
|
|---|
| [2542] | 366 | print $OUTPUT "LVM:$lvmver\n";
|
|---|
| [2149] | 367 |
|
|---|
| 368 | # Analyze the existing physical volumes
|
|---|
| [2542] | 369 | #open(LVM,$lvmcmd."pvdisplay -c |") || mr_exit(-1,"Unable to execute ".$lvmcmd."pvdisplay -c");
|
|---|
| 370 | open(LVM,$lvmcmd."pvs --noheadings --nosuffix --units m --separator : |") || mr_exit(-1,"Unable to execute ".$lvmcmd."pvs");
|
|---|
| [2149] | 371 | while (<LVM>) {
|
|---|
| [2542] | 372 | s/^[\s]*//;
|
|---|
| 373 | my ($pv,$vg,$foo,$foo2,$size,$foo3) = split(/:/);
|
|---|
| 374 | $lvm->{$vg}->{'pvnum'}++;
|
|---|
| [2558] | 375 | # that array will start at 1 then
|
|---|
| 376 | $lvm->{$vg}->{'pv'}->[$lvm->{$vg}->{'pvnum'}] = $pv;
|
|---|
| [2542] | 377 | $lvm->{$vg}->{$pv}->{'size'} = $size;
|
|---|
| [2149] | 378 | print $OUTPUT "PV:$_";
|
|---|
| 379 | }
|
|---|
| 380 | close(LVM);
|
|---|
| 381 |
|
|---|
| 382 | # Analyze the existing volume groups
|
|---|
| [2542] | 383 | #open(LVM,$lvmcmd."vgdisplay -c |") || mr_exit(-1,"Unable to execute ".$lvmcmd."vgdisplay -c");
|
|---|
| 384 | open(LVM,$lvmcmd."vgs --noheadings --nosuffix --units m --separator : |") || mr_exit(-1,"Unable to execute ".$lvmcmd."vgs");
|
|---|
| [2149] | 385 | while (<LVM>) {
|
|---|
| [2542] | 386 | s/^[\s]*//;
|
|---|
| [2149] | 387 | print $OUTPUT "VG:$_";
|
|---|
| 388 | }
|
|---|
| 389 | close(LVM);
|
|---|
| 390 |
|
|---|
| 391 | # Analyze the existing logical volumes
|
|---|
| [2542] | 392 | #open(LVM,$lvmcmd."lvdisplay -c |") || mr_exit(-1,"Unable to execute ".$lvmcmd."lvdisplay -c");
|
|---|
| 393 | open(LVM,$lvmcmd."lvs --noheadings --nosuffix --units m --separator : |") || mr_exit(-1,"Unable to execute ".$lvmcmd."lvs");
|
|---|
| [2149] | 394 | while (<LVM>) {
|
|---|
| [2542] | 395 | s/^[\s]*//;
|
|---|
| [2149] | 396 | print $OUTPUT "LV:$_";
|
|---|
| 397 | }
|
|---|
| 398 | close(LVM);
|
|---|
| [2542] | 399 | return($lvm);
|
|---|
| [2149] | 400 | }
|
|---|
| 401 |
|
|---|
| 402 |
|
|---|
| 403 | =over 4
|
|---|
| 404 |
|
|---|
| 405 | =item B<mr_lvm_prepare>
|
|---|
| 406 |
|
|---|
| 407 | This function outputs in a file descriptor the LVM setup needed to restore LVM conf
|
|---|
| 408 | It returns 1 parameters, the LVM version or 0 if no LVM
|
|---|
| 409 |
|
|---|
| 410 | =cut
|
|---|
| 411 |
|
|---|
| 412 | sub mr_lvm_prepare {
|
|---|
| 413 |
|
|---|
| 414 | my $INPUT = shift;
|
|---|
| 415 | my $OUTPUT = shift;
|
|---|
| 416 | my $mrmult = shift;
|
|---|
| [2558] | 417 | my $lvmcmd;
|
|---|
| 418 | my $lvmver;
|
|---|
| [2149] | 419 |
|
|---|
| 420 | # Generate the startup scrit needed to restore LVM conf
|
|---|
| 421 | # from what is given on input
|
|---|
| 422 | # Multiply by the multiplier given in input or 1 of none
|
|---|
| 423 |
|
|---|
| 424 | my $firsttime = 0;
|
|---|
| 425 | while (<$INPUT>) {
|
|---|
| [2558] | 426 | if (/^LVM:/) {
|
|---|
| 427 | my $tag;
|
|---|
| 428 | my $foo;
|
|---|
| 429 | ($tag,$lvmver) = split(/:/);
|
|---|
| 430 | ($foo,$lvmcmd) = mr_lvm_check($lvmver);
|
|---|
| 431 |
|
|---|
| 432 | print $OUTPUT "# Desactivate Volume Groups\n";
|
|---|
| 433 | print $OUTPUT $lvmcmd."vgchange -an\n";
|
|---|
| 434 | print $OUTPUT "\n";
|
|---|
| 435 |
|
|---|
| 436 | } elsif (/^PV:/) {
|
|---|
| 437 | # This is for pvdisplay -c
|
|---|
| 438 | #my ($tag,$pvname,$vgname,$pvsize,$ipvn,$pvstat,$pvna,$lvnum,$pesize,$petot,$pefree,$pelloc) = split(/:/);
|
|---|
| 439 | my ($tag,$pvname,$vgname,$lvmv,$more,$pesize,$pefree) = split(/:/);
|
|---|
| [2149] | 440 | print $OUTPUT "# Creating Physical Volumes $pvname\n";
|
|---|
| [2558] | 441 | print $OUTPUT $lvmcmd."pvcreate -ff -y";
|
|---|
| 442 | print $OUTPUT " -s ".$pesize*$mrmult if (defined $pesize);
|
|---|
| 443 | print $OUTPUT " $pvname\n";
|
|---|
| [2149] | 444 | print $OUTPUT "\n";
|
|---|
| 445 | } elsif (/^VG:/) {
|
|---|
| [2558] | 446 | # This if for vgdisplay -c
|
|---|
| 447 | #my ($tag,$vgname,$vgaccess,$vgstat,$vgnum,$lvmaxnum,$lvnum,$ocalvinvg,$lvmaxsize,$pvmaxnum,$cnumpv,$anumpv,$vgsize,$pesize,$penum,$pealloc,$pefree,$uuid) = split(/:/);
|
|---|
| 448 | my ($tag,$vgname,$pvnum,$lvnum,$attr,$vgsize,$vgfree) = split(/:/);
|
|---|
| [2149] | 449 | if ($lvmver < 2) {
|
|---|
| 450 | print $OUTPUT "# Removing device first as LVM v1 doesn't do it\n";
|
|---|
| 451 | print $OUTPUT "rm -Rf /dev/$vgname\n";
|
|---|
| 452 | }
|
|---|
| [2558] | 453 | #$lvmaxnum = 255 if (($lvmaxnum > 256) or (not defined $lvmaxnum));
|
|---|
| 454 | #$pvmaxnum = 255 if (($pvmaxnum > 256) or (not defined $pvmaxnum));
|
|---|
| [2149] | 455 | print $OUTPUT "# Create Volume Group $vgname\n";
|
|---|
| 456 | # Pb sur pesize unite ?
|
|---|
| [2558] | 457 | print $OUTPUT $lvmcmd."vgcreate $vgname ";
|
|---|
| 458 | #print $OUTPUT "-p $pvmaxnum -l $lvmaxnum";
|
|---|
| 459 | #print $OUTPUT " -s ".$pesize."\n" if (defined $pesize);
|
|---|
| [2149] | 460 | print $OUTPUT "\n";
|
|---|
| [2558] | 461 |
|
|---|
| [2149] | 462 | } elsif (/^LV:/) {
|
|---|
| [2541] | 463 | if ($firsttime == 0) {
|
|---|
| [2149] | 464 | print $OUTPUT "\n";
|
|---|
| 465 | print $OUTPUT "# Activate All Volume Groups\n";
|
|---|
| 466 | print $OUTPUT $lvmcmd."vgchange -ay\n";
|
|---|
| 467 | print $OUTPUT "\n";
|
|---|
| 468 | $firsttime = 1;
|
|---|
| 469 | }
|
|---|
| 470 | my ($tag,$lvname,$vgname,$lvaccess,$lvstat,$lvnum,$oclv,$lvsize,$leinlv,$lealloc,$allocpol,$readahead,$major,$minor) = split(/:/);
|
|---|
| 471 | print $OUTPUT "# Create Logical Volume $lvname\n";
|
|---|
| [2558] | 472 | print $OUTPUT $lvmcmd."lvcreate -n $lvname -L ".$lvsize*$mrmult;
|
|---|
| 473 | print $OUTPUT " -r $readahead" if (defined $readahead);
|
|---|
| 474 | print $OUTPUT " $vgname\n";
|
|---|
| [2149] | 475 | #[ "$stripes" ] && output="$output -i $stripes"
|
|---|
| 476 | #[ "$stripesize" ] && output="$output -I $stripesize"
|
|---|
| 477 | }
|
|---|
| 478 | }
|
|---|
| [2558] | 479 |
|
|---|
| [2149] | 480 | print $OUTPUT "\n";
|
|---|
| 481 | print $OUTPUT "# Scanning again Volume Groups\n";
|
|---|
| 482 | print $OUTPUT $lvmcmd."vgscan\n";
|
|---|
| 483 | print $OUTPUT "\n";
|
|---|
| 484 |
|
|---|
| 485 | }
|
|---|
| 486 |
|
|---|
| [2118] | 487 | =back
|
|---|
| 488 |
|
|---|
| 489 | =head1 WEB SITES
|
|---|
| 490 |
|
|---|
| 491 | The main Web site of the project is available at L<http://www.mondorescue.org/>. Bug reports should be filled using the trac instance of the project at L<http://trac.mondorescue.org/>.
|
|---|
| 492 |
|
|---|
| 493 | =head1 USER MAILING LIST
|
|---|
| 494 |
|
|---|
| 495 | The mailing list of the project is available at L<mailto:mondo@lists.sf.net>
|
|---|
| 496 |
|
|---|
| 497 | =head1 AUTHORS
|
|---|
| 498 |
|
|---|
| 499 | The Mondorescue.org team L<http://www.mondorescue.org/> lead by Bruno Cornec L<mailto:bruno@mondorescue.org>.
|
|---|
| 500 |
|
|---|
| 501 | =head1 COPYRIGHT
|
|---|
| 502 |
|
|---|
| 503 | This module is distributed under the GPL v2.0 license
|
|---|
| 504 | described in the file C<COPYING> included with the distribution.
|
|---|
| 505 |
|
|---|
| 506 |
|
|---|
| 507 | =cut
|
|---|
| 508 |
|
|---|
| 509 | 1;
|
|---|
| 510 |
|
|---|
