3 # check that the configuration is sane and backs up everything it should
5 # This file is part of chiark backup, a system for backing up GNU/Linux and
6 # other UN*X-compatible machines, as used on chiark.greenend.org.uk.
9 # Copyright (C) 1997-1998,2000-2001,2007
10 # Ian Jackson <ian@chiark.greenend.org.uk>
11 # Copyright (C) 1999 Peter Maydell <pmaydell@chiark.greenend.org.uk>
13 # This is free software; you can redistribute it and/or modify it under the
14 # terms of the GNU General Public License as published by the Free Software
15 # Foundation; either version 3, or (at your option) any later version.
17 # This is distributed in the hope that it will be useful, but WITHOUT ANY
18 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
19 # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
22 # You should have received a copy of the GNU General Public License along
23 # with this program; if not, consult the Free Software Foundation's
24 # website at www.fsf.org, or the GNU Project website at www.gnu.org.
26 # All filesystems must either be backed up in both full and
27 # incremental dumps or listed as exceptions.
30 $etc= '/etc/chiark-backup';
31 require "$etc/settings.pl";
32 require 'backuplib.pl';
37 open X,'last-tape' or die $!;
41 while (!defined $tapedone{$tape}) {
42 open X,"$etc/tape.$tape" or die "$tape $!";
45 $_= <X> or die $1; chomp; s/\s*$//;
49 if (m/^filesystems (\w+)$/) { $fsg= $1; }
50 elsif (m/^next (\w+)$/) { $next=$1; }
51 else { die "$tape $_ ?"; }
53 length $fsg or die "$tape $!";
54 length $next or die "$tape $!";
55 push @{$fsgdone{$fsg}}, $tape;
60 sub checkdevspec ($$$) {
61 my ($atf,$devspec,$why) = @_;
62 push @{ $devspec{$atf}{$devspec} }, $why;
65 for $fsg (sort keys %fsgdone) {
66 print "filesystem group $fsg: ".join(' ',@{$fsgdone{$fsg}}).":\n ";
72 &e("dumped twice ($backed{$pstr}, $fsg): $pstr")
73 if defined $backed{$pstr};
75 checkdevspec($pstr,"$pcstr$dev","filesystem group $fsg")
82 print "incremental group:\n ";
89 checkdevspec($pstr,"$pcstr$dev","incremental group") if length $dev;
94 for $pfx ('', sort keys %prefix) {
95 $rstr= length($pfx) ? $prefix{$pfx}.' ' : '';
96 $dfstr= exists($prefixdf{$pfx}) ? $prefixdf{$pfx} :
97 'df -P --no-sync -xiso9660 -xnfs -xproc -xtmpfs';
99 open X, "$cmd |" or die $!;
100 $_= <X>; m/^Filesystem/ or die "$cmd => $_ ?";
101 $prefix= length($pfx) ? $pfx : '<local>';
102 $pcstr= length($pfx) ? "$pfx:" : '';
103 print "mount points: $prefix:";
106 next if m,^procfs\s,;
107 m,^/dev/(\S+)\s.*\s(/\S*)\s*$, or die "$_ ?";
108 ($dev,$mp) = ($1,$2);
109 checkdevspec("$pcstr$mp","$pcstr/dev/$dev","df");
110 $mounted{"$pcstr$mp"}="$pcstr$dev"; print " $1-$2";
111 if (defined($backto= $backed{"$pcstr$mp"})) {
112 if (m,^/dev/\S+\s+\d+\s+(\d+)\s,) {
113 $usedkb{$backto} += $1;
114 $countedkb{"$pcstr$mp"}++;
119 $!=0; close(X); $? and die "$? $!";
122 foreach $fsg (keys %usedkb) {
123 print "filesystem group $fsg: $usedkb{$fsg} 1K-blocks raw accounted\n";
126 foreach $fsg (keys %backed) {
127 next if $countedkb{$fsg};
128 print "unaccounted filesystem: $fsg\n";
131 foreach $dsk (keys %devspec) {
132 if (keys %{ $devspec{$dsk} } != 1) {
133 foreach $devspec (keys %{ $devspec{$dsk} }) {
134 &e("inconsistent devices for $dsk: $devspec (".
135 join(', ', @{ $devspec{$dsk}{$devspec} }).")");
140 # We check that all mounted filesystems are dumped and all
141 # filesystems to be dumped are mounted. The expected-diffs
142 # config file allows us to make exceptions.
144 # #expect disk2 to be mounted but not dumped
146 # # CD may or may not be mounted but should not be dumped in either case
149 open Z,"$etc/expected-diffs" or die $!;
151 $_= <Z> or die; chomp; s/\s*$//;
156 print "non-permanent filesystem expected not to be dumped: $_\n";
157 if (defined($mounted{$_})) {
161 &e("expected not to be dumped, but not a mount point: $_")
162 unless defined($mounted{$_});
163 print "filesystem expected not to be dumped: $_\n";
166 &e("non-filesystem expected to be dumped is mounted: $_ on $mounted{$_}")
167 if defined($mounted{$_});
168 $mounted{$_}= 'expected-diffs';
169 print "non-filesystem expected to be dumped: $_\n";
173 for $fs (sort keys %backed) { length($mounted{$fs}) || &e("dumped ($backed{$fs}), not a mount point: $fs"); }
174 for $fs (sort keys %incrd) { length($mounted{$fs}) || &e("increm'd ($incrd{$fs}), not a mount point: $fs"); }
175 for $fs (sort keys %mounted) { length($backed{$fs}) || &e("mount point ($mounted{$fs}), not dumped: $fs"); }
176 for $fs (sort keys %mounted) { length($incrd{$fs}) || &e("mount point ($mounted{$fs}), not increm'd: $fs"); }
178 $emsg.= "configuration ok\n" unless $e;
182 sub e { $emsg.="** @_\n"; $e=1; }