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 | mrprepare-lvm - A Mindi Tool to restore the LVM configuration and apply it
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31 |
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32 | =head1 DESCRIPTION
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33 |
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34 | B<mrprepare-lvm> gets all the information related to the LVM configuration from stdin or a file and prepare a restoration script
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35 |
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36 | =head1 SYNOPSIS
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37 |
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38 | mrprepare-lvm [-v]|[-q]|[-h]|[--man][-i inputfile][-l logfile][-m multiplier]
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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 | Be more verbose
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47 |
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48 | =item B<-q|--quiet>
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49 |
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50 | Do not print any output.
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51 |
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52 | =item B<-h|--help>
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53 |
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54 | Print a brief help message and exits.
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55 |
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56 | =item B<--man>
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57 |
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58 | Prints the manual page and exits.
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59 |
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60 | =item B<-i|--input>
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61 |
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62 | Name of the file to get input from. Use stdin by default
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63 |
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64 | The input format is:
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65 | LVM:lvm-version
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66 | PV:pv-information as done with pvdisplay -c
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67 | VG:vg-information as done with vgdisplay -c
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68 | LV:lv-information as done with lvdisplay -c
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69 |
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70 | =item B<-o|--output>
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71 |
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72 | Name of the file to write output to. Use stdout by default.
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73 | The output file is a srpit ready to run in order to setup correctly LVM
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74 |
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75 |
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76 | =back
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77 |
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78 | =head1 WEB SITES
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79 |
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80 | 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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81 |
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82 | =head1 USER MAILING LIST
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83 |
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84 | The mailing list of the project is available at L<mailto:mondo@lists.sf.net>
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85 |
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86 | =head1 AUTHORS
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87 |
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88 | The Mondorescue.org team L<http://www.mondorescue.org/> lead by Bruno Cornec L<mailto:bruno@mondorescue.org>.
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89 |
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90 | =head1 COPYRIGHT
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91 |
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92 | Analyze-LVM is distributed under the GPL v2.0 license
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93 | described in the file C<COPYING> included with the distribution.
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94 |
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95 | =cut
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96 |
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97 |
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98 | # ---------------------------------------------------------------------------
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99 | # Globals
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100 | my %opts; # CLI Options
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101 |
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102 | # Initialize the syntax string
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103 |
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104 | pb_syntax_init("mrprepare-lvm Version PBVER-rPBREV\n");
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105 |
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106 | # Handle options
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107 | #
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108 | GetOptions("help|?|h" => \$opts{'h'},
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109 | "man" => \$opts{'man'},
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110 | "verbose|v+" => \$opts{'v'},
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111 | "quiet|q" => \$opts{'q'},
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112 | "input|i=s" => \$opts{'o'},
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113 | "output|o=s" => \$opts{'o'},
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114 | "multiplier|m=s" => \$opts{'o'},
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115 | "log-files|l=s" => \$opts{'l'},
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116 | "version|V" => \$opts{'V'},
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117 | ) || pb_syntax(-1,0);
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118 |
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119 | # easy options
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120 | if (defined $opts{'h'}) {
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121 | pb_syntax(0,1);
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122 | }
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123 | if (defined $opts{'man'}) {
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124 | pb_syntax(0,2);
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125 | }
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126 | if (defined $opts{'v'}) {
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127 | $pbdebug = $opts{'v'};
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128 | }
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129 | if (defined $opts{'q'}) {
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130 | $pbdebug = -1;
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131 | }
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132 | my $mrmult = 1;
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133 | if (defined $opts{'m'}) {
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134 | $mrmult = $opts{'m'};
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135 | }
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136 |
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137 | #
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138 | # Global variables
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139 | #
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140 | my $MINDI_VERSION = "PBVER-rPBREV";
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141 | my $MINDI_PREFIX = "PBPREFIX";
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142 | my $MINDI_CONF = "PBCONF";
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143 | my $MINDI_LIB = "PBLIB";
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144 | my $MINDI_SBIN = "$MINDI_PREFIX/sbin";
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145 | #
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146 | # Temp dir
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147 | #
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148 | pb_temp_init();
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149 |
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150 | # -------------------------------- main -----------------------------------
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151 | my ($lvmver,$lvmcmd) = mr_lvm_check();
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152 |
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153 | # Where to send the output
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154 | my $OUTPUT = \*STDOUT;
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155 | if (defined $opts{'o'}) {
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156 | open(OUTPUT, "> $opts{'o'}") || mr_exit(-1, "Unable to write to $opts{'o'}");
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157 | $OUTPUT = \*OUTPUT;
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158 | }
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159 |
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160 | # Where to get the input
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161 | my $INPUT = \*STDIN;
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162 | if (defined $opts{'i'}) {
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163 | open(INPUT, " $opts{'i'}") || mr_exit(-1, "Unable to read from $opts{'i'}");
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164 | $INPUT = \*INPUT;
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165 | }
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166 |
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167 |
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168 | # Generate the startup scrit needed to restore LVM conf
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169 | # from what is given on input
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170 | # Multiply by the multiplier given in input or 1 of none
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171 | print $OUTPUT "# Desactivate Volume Groups\n";
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172 | print $OUTPUT "$lvmcmd vgchange -an\n";
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173 | print $OUTPUT "\n";
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174 |
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175 | my $firsttime = 0;
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176 | while (<INPUT>) {
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177 | if (/^PV:/) {
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178 | my ($tag,$pvname,$vgname,$pvsize,$ipvn,$pvstat,$pvna,$lvnum,$pesize,$petot,$pefree,$pelloc) = split(/:/);
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179 | print $OUTPUT "# Creating Physical Volumes $pvname\n";
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180 | print $OUTPUT "$lvmcmd pvcreate -ff -y -s ".$pesize*$mrmult." $pvname\n";
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181 | print $OUTPUT "\n";
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182 | } elsif (/^VG:/) {
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183 | my ($tag,$vgname,$vgaccess,$vgstat,$vgnum,$lvmaxnum,$lvnum,$ocalvinvg,$lvmaxsize,$pvmaxnum,$cnumpv,$anumpv,$vgsize,$pesize,$penum,$pealloc,$pefree,$uuid) = split(/:/);
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184 | if ($lvmver < 2) {
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185 | print $OUTPUT "# Removing device first as LVM v1 doesn't do it\n";
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186 | print $OUTPUT "rm -Rf /dev/$vgname\n";
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187 | }
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188 | $lvmaxnum = 255 if ($lvmaxnum > 256);
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189 | $pvmaxnum = 255 if ($pvmaxnum > 256);
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190 | print $OUTPUT "# Create Volume Group $vgname\n";
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191 | # Pb sur pesize unite ?
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192 | print $OUTPUT "$lvmcmd vgcreate $vgname -p $pvmaxnum -s $pesize -l $lvmaxnum\n";
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193 | print $OUTPUT "\n";
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194 | } elsif (/^LV:/) {
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195 | if ($firsttime eq 0) {
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196 | print $OUTPUT "\n";
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197 | print $OUTPUT "# Activate All Volume Groups\n";
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198 | print $OUTPUT "$lvmcmd vgchange -ay\n";
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199 | print $OUTPUT "\n";
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200 | $firsttime = 1;
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201 | }
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202 | my ($tag,$lvname,$vgname,$lvaccess,$lvstat,$lvnum,$oclv,$lvsize,$leinlv,$lealloc,$allocpol,$readahead,$major,$minor) = split(/:/);
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203 | print $OUTPUT "# Create Logical Volume $lvname\n";
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204 | print $OUTPUT "$lvmcmd lvcreate -n $lvname -L ".$lvsize*$mrmult." -r $readahead $vgname\n";
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205 | #[ "$stripes" ] && output="$output -i $stripes"
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206 | #[ "$stripesize" ] && output="$output -I $stripesize"
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207 | }
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208 | }
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209 | print $OUTPUT "\n";
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210 | print $OUTPUT "# Scanning again Volume Groups\n";
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211 | print $OUTPUT "$lvmcmd vgscan\n";
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212 | print $OUTPUT "\n";
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213 |
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214 |
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215 | #WriteShutdownScript
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216 | mr_exit(0,"End of mrprepare-lvm");
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217 |
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218 | sub mr_exit {
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219 |
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220 | my $code = shift;
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221 | my $msg = shift || "";
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222 |
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223 | close(OUTPUT);
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224 | print $msg."\n";
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225 | die "ERROR returned\n" if ($code < 0);
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226 | print "No LVM handling\n" if ($code > 0);
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227 | exit(0);
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228 | }
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