[2076] | 1 | #!/usr/bin/perl -w
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| 2 | #
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| 3 | # Analyze the LVM configuration
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| 4 | # and stor the configuration for restore time
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| 5 | #
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| 6 | # $Id$
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| 7 | #
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| 8 | # Copyright B. Cornec 2008
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| 9 | # Provided under the GPL v2
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| 10 |
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| 11 | # Syntax: see below
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| 12 |
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| 13 | use strict 'vars';
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| 14 | use Getopt::Long qw(:config auto_abbrev no_ignore_case);
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| 15 | use Data::Dumper;
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| 16 | use English;
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| 17 | use File::Basename;
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| 18 | use File::Copy;
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| 19 | use File::stat;
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| 20 | use File::Temp qw(tempdir);
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| 21 | use POSIX qw(strftime);
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| 22 | use lib qw (lib);
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| 23 | use ProjectBuilder::Base;
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| 24 | use ProjectBuilder::Distribution;
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| 25 |
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| 26 | =pod
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| 27 |
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| 28 | =head1 NAME
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| 29 |
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| 30 | Analyze-lvm - A Mindi Tool to analyze the LVM configuration and store it
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| 31 |
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| 32 | =head1 DESCRIPTION
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| 33 |
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| 34 | B<anlyze-lvm> prints all the information related to the LVM configuration that may be used by a restoration process
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| 35 |
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| 36 | =head1 SYNOPSIS
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| 37 |
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| 38 | analyze-lvm [-v]|[-q]|[-h]|[--man]
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| 39 |
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| 40 | =head1 OPTIONS
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| 41 |
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| 42 | =over 4
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| 43 |
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| 44 | =item B<-v|--verbose>
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| 45 |
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| 46 | Print a brief help message and exits.
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| 47 |
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| 48 |
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| 49 | =item B<-q|--quiet>
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| 50 |
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| 51 | Do not print any output.
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| 52 |
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| 53 | =item B<-h|--help>
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| 54 |
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| 55 | Print a brief help message and exits.
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| 56 |
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| 57 | =item B<--man>
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| 58 |
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| 59 | Prints the manual page and exits.
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| 60 |
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| 61 | =item B<-i|--iso iso_image>
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| 62 |
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| 63 | Name of the ISO image you want to created.
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| 64 |
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| 65 | =back
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| 66 |
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| 67 | =head1 WEB SITES
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| 68 |
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| 69 | 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/>.
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| 70 |
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| 71 | =head1 USER MAILING LIST
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| 72 |
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| 73 | The miling list of the project is available at L<mailto:mondo@lists.sf.net>
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| 74 |
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| 75 | =head1 AUTHORS
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| 76 |
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| 77 | The Mondorescue.org team L<http://www.mondorescue.org/> lead by Bruno Cornec L<mailto:bruno@mondorescue.org>.
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| 78 |
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| 79 | =head1 COPYRIGHT
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| 80 |
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| 81 | Analyze-LVM is distributed under the GPL v2.0 license
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| 82 | described in the file C<COPYING> included with the distribution.
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| 83 |
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| 84 | =cut
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| 85 |
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| 86 |
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| 87 | # ---------------------------------------------------------------------------
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| 88 |
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| 89 | # Initialize the syntax string
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| 90 |
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| 91 | pb_syntax_init("analyze-lvm Version PBVER-rPBREV\n");
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| 92 |
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| 93 | # Handle options
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| 94 | #
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| 95 | GetOptions("help|?|h" => \$opts{'h'},
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| 96 | "man" => \$opts{'man'},
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| 97 | "verbose|v+" => \$opts{'v'},
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| 98 | "quiet|q" => \$opts{'q'},
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| 99 | "log-files|l=s" => \$opts{'l'},
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| 100 | "version|V" => \$opts{'V'},
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| 101 | ) || pb_syntax(-1,0);
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| 102 |
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| 103 | # easy options
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| 104 | if (defined $opts{'h'}) {
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| 105 | pb_syntax(0,1);
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| 106 | }
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| 107 | if (defined $opts{'man'}) {
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| 108 | pb_syntax(0,2);
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| 109 | }
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| 110 | if (defined $opts{'v'}) {
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| 111 | $pbdebug = $opts{'v'};
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| 112 | }
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| 113 | if (defined $opts{'q'}) {
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| 114 | $pbdebug=-1;
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| 115 | }
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| 116 |
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| 117 | #
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| 118 | # Global variables
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| 119 | #
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| 120 | my $MINDI_VERSION = "PBVER-rPBREV";
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| 121 | my $MINDI_PREFIX = "PBPREFIX";
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| 122 | my $MINDI_CONF = "PBCONF";
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| 123 | my $MINDI_LIB = "PBLIB";
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| 124 | my $MINDI_SBIN = "$MINDI_PREFIX/sbin";
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| 125 | #
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| 126 | # Temp dir
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| 127 | #
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| 128 | pb_temp_init();
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| 129 |
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| 130 | my $lvmds = "/usr/sbin/lvmdiskscan";
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| 131 | my $lvmproc = "/proc/lvm/global";
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| 132 | my $lvmcmd = "/usr/sbi/lvm";
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| 133 |
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| 134 | # -------------------------------- main -----------------------------------
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| 135 | mr_exit(-1,"$lvmds doesn't exist. No LVM handling.") if ((! -x $lvmds) ;
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| 136 | mr_exit(-1,"$lvmproc doesn't exist. No LVM handling.") if ((! -x $lvmproc) ;
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| 137 |
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| 138 | # Check LVM volumes presence
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| 139 | open(LVM,$lvmproc) || mr_exit(-1,"Unable to open $lvmproc");
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| 140 | while (<LVM>) {
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| 141 | mr_exit(1,"No LVM volumes found in $lvmproc") if (/0 VGs 0 PVs 0 LVs/);
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| 142 | }
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| 143 | close(LVM);
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| 144 |
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| 145 | # Check LVM version
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| 146 | my $lvmver=0;
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| 147 | open(LVM,"$lvmds --help 2>&1 |") || mr_exit(-1,"Unable to execute $lvmds");
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| 148 | while (<LVM>) {
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| 149 | if (/Logical Volume Manager/ || /LVM version:/) {
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| 150 | $lvmver = $_;
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| 151 | $lvmver =~ s/:([0-9])\..*/$1/;
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| 152 | }
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| 153 | }
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| 154 | close(LVM);
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| 155 | #lvmversion=`lvmdiskscan --help 2>&1 |
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| 156 | #grep -E "Logical Volume Manager|LVM version:" |
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| 157 | #cut -d: -f2 | cut -d. -f1 |
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| 158 | #awk '{print $NF}' |
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| 159 | #sed -e 's/ //g'`
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| 160 |
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| 161 | if ($lvmver = 0) {
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| 162 | # Still not found
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| 163 | if (-x $lvmcmd) {
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| 164 | open(LVM,"$lvmcmd version |") || mr_exit(-1,"Unable to execute $lvmcmd");
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| 165 | while (<LVM>) {
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| 166 | if (/LVM version/) {
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| 167 | $lvmver = $_;
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| 168 | $lvmver =~ s/LVM version ([0-9])\..*/$1/;
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| 169 | }
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| 170 | }
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| 171 | close(LVM);
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| 172 | }
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| 173 | }
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| 174 |
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| 175 | if ($lvmver = 0) {
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| 176 | # Still not found
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| 177 | mr_exit(-1,"Unable to determine LVM version.\nPlease report to the dev team with the result of the commands\n$lvmds and $lvmvmd version");
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| 178 | } elsif ($lvmver = 1) {
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| 179 | $lvmcmd = "";
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| 180 | }
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| 181 | pb_log(0,"Found LVM version $lvmver");
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| 182 |
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| 183 | # For the moment on stdout
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| 184 | OUTPUT = \*STDOUT;
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| 185 |
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| 186 | # Generate the startup scrit on the fly needed to restore LVM conf
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| 187 | print OUTPUT "# Desactivate Volume Groups\n";
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| 188 | print OUTPUT "$lvmcmd vgchange -an\n";
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| 189 | print OUTPUT "\n";
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| 190 |
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[2077] | 191 | print OUTPUT "# Creating Physical Volumes\n";
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[2076] | 192 | # Analyze the existing physical volumes
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[2077] | 193 | open(LVM,"$lvmcmd pvdisplay -c |") || mr_exit(-1,"Unable to execute $lvmcmd pvdisplay -c");
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[2076] | 194 | while (<LVM>) {
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[2077] | 195 | my ($pvname,$vgname,$pvsize,$ipvn,$pvstat,$pvna,$lvnum,$pesize,$petot,$pefree,$pelloc) = split(/:/);
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| 196 | print OUTPUT "$lvmcmd pvcreate -ff -y -s $pesize $pvname\n";
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[2076] | 197 | }
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| 198 | close(LVM);
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| 199 | print OUTPUT "\n";
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| 200 | print OUTPUT "# Scanning again Volume Groups\n";
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| 201 | print OUTPUT "$lvmcmd vgscan\n";
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| 202 | print OUTPUT "\n";
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| 203 |
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| 204 | # Analyze the existing volume groups
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| 205 | print OUTPUT "# Creating Volume Groups and Activating them\n";
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[2077] | 206 | open(LVM,"$lvmcmd vgdisplay -c |") || mr_exit(-1,"Unable to execute $lvmcmd vgdisplay -c");
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[2076] | 207 | while (<LVM>) {
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[2077] | 208 | my ($vgname,$vgaccess,$vgstat,$vgnum,$lvmaxnum,$lvnum,$ocalvinvg,$lvmaxsize,$pvmaxnum,$cnumpv,$anumpv,$vgsize,$pesize,$penum,$pealloc,$pefree,$uuid) = split(/:/);
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[2076] | 209 | if ($lvmver < 2) {
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| 210 | print OUTPUT "# Removing device first as LVM v1 doesn't do it\n";
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| 211 | print OUTPUT "rm -Rf /dev/$vg\n";
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| 212 | }
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[2077] | 213 | $lvmaxnum = 255 if ($lvmaxnum > 256);
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| 214 | $pvmaxnum = 255 if ($pvmaxnum > 256);
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| 215 | print OUTPUT "# Create Volume Group $vgname\n";
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| 216 | # Pb sur pesize unite ?
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| 217 | print OUTPUT "$lvmcmd vgcreate $vgname -p $pvmaxnum -s $pesize -l $lvmaxnum $lvmaxnum\n";
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[2076] | 218 | }
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[2077] | 219 | close(LVM);
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| 220 | print OUTPUT "\n";
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| 221 | print OUTPUT "# Activate Volume Group $vg\n";
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| 222 | print OUTPUT "$lvmcmd vgchange -ay\n";
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| 223 | print OUTPUT "\n";
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[2076] | 224 |
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[2077] | 225 | print OUTPUT "# Creating Logical Volumes\n";
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| 226 | open(LVM,"$lvmcmd lvdisplay -c |") || mr_exit(-1,"Unable to execute $lvmcmd lvdisplay -c");
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| 227 | while (<LVM>) {
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| 228 | my ($lvname,$vgname,$lvaccess,$lvstat,$lvnum,$oclv,$lvsize,$leinlv,$lealloc,$allocpol,$reaadhead,$major,$minor) = split(/:/);
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| 229 | print OUTPUT "# Create Logical Volume $lvname\n";
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| 230 | print OUTPUT "$lvmcmd lvcreate -n $lvname -L $lvsize -r $redahed $vgname\n";
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[2076] | 231 | [ "$stripes" ] && output="$output -i $stripes"
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| 232 | [ "$stripesize" ] && output="$output -I $stripesize"
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| 233 | }
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[2077] | 234 | close(LVM);
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| 235 | print OUTPUT "\n";
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| 236 | print OUTPUT "# Scanning again Volume Groups\n";
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| 237 | print OUTPUT "$lvmcmd vgscan\n";
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| 238 | print OUTPUT "\n";
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[2076] | 239 |
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[2077] | 240 | WriteShutdownScript
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| 241 | mr_exit(0,"End of analyze-lvm");
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