Annotation of /trunk/bin/BackupPC_recover_from_increments

#!/usr/bin/perl -w

use strict;

=head1 NAME

BackupPC_recover_from_increments

=head1 DESCRIPTION

quick hack to create BackupPC pool out of increments

=head1 SYNOPSYS

 BackupPC_recover_from_increments /restore/from/directory/ [/path/to/increment/to/restore.tar.gz ... ]

=head1 HISTORY

2006-02-07 Dobrica Pavlinusic <dpavlin@rot13.org>

=cut

use File::Find;
use File::Path;
use Data::Dumper;

use lib "/data/backuppc/lib";
use BackupPC::Lib;

my $host = 'restore';
my $share = '/etc';

# this option will cleanup tar dump before import of each increment
# WARNING: this will create increments which contain only new files, not
# state of share in that particular moment! (it's fast, though)
my $cleanup_before_increment = 0;

# this option will probably create wrong increments, but it's here for
# testing and comparison. In short, don't use it!
my $restore_via_temp_dir = 1;

# connect to BackupPC_server

my $bpc = BackupPC::Lib->new(undef, undef, 1) || die;
my %Conf = $bpc->Conf();

$bpc->ChildInit();

my $err = $bpc->ServerConnect($Conf{ServerHost}, $Conf{ServerPort});
if ( $err ) {
    print("Can't connect to server ($err)\n");
    exit(1);
}

my $TopDir = $bpc->TopDir();

#print Dumper(\%Conf);

# check if host exists

my $host_info = $bpc->HostInfoRead( $host );
#print Dumper($host_info, $bpc->HostInfoRead( 'localhost' ));
die "host '$host' is not found, please add it to config/hosts configuration file\n" unless ($host_info->{$host});

# take care of temporary directory for increments

my $inc_tmp_dir = $Conf{IncrementTempDir} || die "need working directory in IncrementTempDir\n";

sub cleanup_inc_temp_dir {
        rmtree($inc_tmp_dir) if (-e $inc_tmp_dir);
        mkpath($inc_tmp_dir);
}

print "# using $inc_tmp_dir for increment scratch space";
cleanup_inc_temp_dir() if (! $cleanup_before_increment);

my $restore_path = "$Conf{InstallDir}/$Conf{GzipTempDir}/${host}-restore.tar.gz";

# create restore host configuration

my $conf_restore = <<'_END_OF_CONF_';

$Conf{XferMethod} = 'tar';
$Conf{TarShareName} = '__share__';

# disable ping
$Conf{PingCmd} = '';
# work-around for Backup aborted because of CorrectHostCheck
$Conf{FixedIPNetBiosNameCheck} = 0;
$Conf{NmbLookupCmd} = '';
$Conf{ClientNameAlias} = 'localhost';

#$Conf{TarIncrArgs} = '';
#$Conf{ClientTimeout} = 600;

_END_OF_CONF_

$conf_restore .= <<'_END_OF_CONF_' if (! $restore_via_temp_dir);

#$Conf{TarClientCmd} = '';
#$Conf{TarFullArgs} = 'gzip -cdv __restore_path__';

# force BackupPC_tarExtract to produce output of tar -c -v -f - --totals
# so that we can just pipe tar into it!
$Conf{tarExtractEmulateTotals} = 1;
$Conf{TarClientCmd} = 'zcat __restore_path__';

_END_OF_CONF_

$conf_restore .= <<'_END_OF_CONF_' if ($restore_via_temp_dir);

$Conf{TarClientCmd} = '$tarPath -c -v -f - -C __inc_tmp_dir__ --totals';

_END_OF_CONF_

$conf_restore =~ s/__share__/$share/gs;
$conf_restore =~ s/__inc_tmp_dir__/$inc_tmp_dir/gs;
$conf_restore =~ s/__restore_path__/$restore_path/gs;

$conf_restore .= "\n1;\n";

my $config_file = "$bpc->{TopDir}/conf/${host}.pl";

open(my $host_fh, '>', $config_file) || die "can't open $config_file: $!";
print $host_fh $conf_restore || die "can't write configuration in $config_file: $!";
close($host_fh) || die "can't close $config_file: $!";

warn "written config:\n$conf_restore\n";

sub restore_increment {
        my $path = shift || die "need path!";

        if ($path !~ m/\.tar\.gz$/i) {
                print "# skipping $path, not .tar.gz increment\n";
                return;
        }

        if ($restore_via_temp_dir) {

                print "restoring $path (extracting to create increment)\n";

                cleanup_inc_temp_dir() if ($cleanup_before_increment);

                my $cmd = "cd $inc_tmp_dir && tar xfz $path";
                system($cmd) == 0 or die "can't execute: $cmd -- $?\n";
        
        } else {

                print "using $path to create increment\n";

                if (-e $restore_path) {
                        unlink $restore_path || die "can't remove $restore_path: $!\n";
                }
                symlink $path, $restore_path || die "can't create link $path -> $restore_path: $!\n";


        }

        print "starting import into BackupPC pool\n";

        my $user = $host_info->{$host}->{user} || die "can't get user for host $host";

        $bpc->ServerMesg("log User $user started recovery from increment $path");

        my @backups = $bpc->BackupInfoRead( $host );

        my $full = 1;
        foreach my $b (@backups) {
                $full = 0 if ($b->{type} eq 'full');
        }

        my $r = $bpc->ServerMesg("backup $host $host $user $full");
        print "backup ", $full ? 'full' : 'incremental', " --> $r";
        die $r if ($r =~ m/^error/);

        # Status_backup_in_progress
        # Status_idle

        my ($state,$last_state) = ('','x');

        while ($state ne 'Status_idle') {
                my $s = $bpc->ServerMesg("status hosts");
                my %Status;
                {
                        eval "$s";
                }
                $state = $Status{restore}->{state};

                die $state if ($state =~ m/^error/);

                if ($state ne $last_state) {
                        print "\n$state"; #, Dumper($Status{restore});
                } else {
                        print ".";
                }
                $last_state = $state;
                sleep 1;
        }
        print "\n";
}

# now, start restore

foreach my $restore_inc (@ARGV) {

        if (-d $restore_inc) {

                find({ wanted => sub {
                        restore_increment( $File::Find::name );
                }, follow => 0 }, $restore_inc);

        } elsif (-f $restore_inc) {
                restore_increment( $restore_inc );
        } else {
                warn "skipped: $restore_inc, not file or directory\n";
        }

}

#unlink $config_file || die "can't remove $config_file: $!";

rmtree($inc_tmp_dir) if (-e $inc_tmp_dir);
1	dpavlin	333	#!/usr/bin/perl -w
2
3	dpavlin	342	use strict;
4
5	dpavlin	340	=head1 NAME
6	dpavlin	333
7	dpavlin	340	BackupPC_recover_from_increments
8	dpavlin	333
9	dpavlin	340	=head1 DESCRIPTION
10
11			quick hack to create BackupPC pool out of increments
12
13			=head1 SYNOPSYS
14
15			BackupPC_recover_from_increments /restore/from/directory/ [/path/to/increment/to/restore.tar.gz ... ]
16
17			=head1 HISTORY
18
19			2006-02-07 Dobrica Pavlinusic <dpavlin@rot13.org>
20
21			=cut
22
23	dpavlin	333	use File::Find;
24	dpavlin	356	use File::Path;
25	dpavlin	333	use Data::Dumper;
26
27			use lib "/data/backuppc/lib";
28			use BackupPC::Lib;
29
30	dpavlin	342	my $host = 'restore';
31	dpavlin	349	my $share = '/etc';
32	dpavlin	342
33	dpavlin	360	# this option will cleanup tar dump before import of each increment
34			# WARNING: this will create increments which contain only new files, not
35			# state of share in that particular moment! (it's fast, though)
36			my $cleanup_before_increment = 0;
37
38	dpavlin	361	# this option will probably create wrong increments, but it's here for
39			# testing and comparison. In short, don't use it!
40			my $restore_via_temp_dir = 1;
41
42	dpavlin	333	# connect to BackupPC_server
43
44	dpavlin	361	my $bpc = BackupPC::Lib->new(undef, undef, 1) \|\| die;
45	dpavlin	340	my %Conf = $bpc->Conf();
46	dpavlin	333
47			$bpc->ChildInit();
48
49			my $err = $bpc->ServerConnect($Conf{ServerHost}, $Conf{ServerPort});
50			if ( $err ) {
51			print("Can't connect to server ($err)\n");
52			exit(1);
53			}
54
55	dpavlin	340	my $TopDir = $bpc->TopDir();
56	dpavlin	333
57	dpavlin	343	#print Dumper(\%Conf);
58	dpavlin	340
59	dpavlin	342	# check if host exists
60
61	dpavlin	343	my $host_info = $bpc->HostInfoRead( $host );
62	dpavlin	356	#print Dumper($host_info, $bpc->HostInfoRead( 'localhost' ));
63	dpavlin	344	die "host '$host' is not found, please add it to config/hosts configuration file\n" unless ($host_info->{$host});
64	dpavlin	342
65	dpavlin	356	# take care of temporary directory for increments
66
67			my $inc_tmp_dir = $Conf{IncrementTempDir} \|\| die "need working directory in IncrementTempDir\n";
68
69	dpavlin	360	sub cleanup_inc_temp_dir {
70			rmtree($inc_tmp_dir) if (-e $inc_tmp_dir);
71			mkpath($inc_tmp_dir);
72			}
73	dpavlin	356
74			print "# using $inc_tmp_dir for increment scratch space";
75	dpavlin	360	cleanup_inc_temp_dir() if (! $cleanup_before_increment);
76	dpavlin	356
77	dpavlin	361	my $restore_path = "$Conf{InstallDir}/$Conf{GzipTempDir}/${host}-restore.tar.gz";
78
79	dpavlin	340	# create restore host configuration
80
81			my $conf_restore = <<'_END_OF_CONF_';
82
83			$Conf{XferMethod} = 'tar';
84	dpavlin	349	$Conf{TarShareName} = '__share__';
85	dpavlin	340
86	dpavlin	352	# disable ping
87			$Conf{PingCmd} = '';
88			# work-around for Backup aborted because of CorrectHostCheck
89			$Conf{FixedIPNetBiosNameCheck} = 0;
90			$Conf{NmbLookupCmd} = '';
91	dpavlin	345	$Conf{ClientNameAlias} = 'localhost';
92	dpavlin	340
93	dpavlin	356	#$Conf{TarIncrArgs} = '';
94			#$Conf{ClientTimeout} = 600;
95	dpavlin	361
96			_END_OF_CONF_
97
98			$conf_restore .= <<'_END_OF_CONF_' if (! $restore_via_temp_dir);
99
100	dpavlin	356	#$Conf{TarClientCmd} = '';
101			#$Conf{TarFullArgs} = 'gzip -cdv __restore_path__';
102	dpavlin	340
103	dpavlin	361	# force BackupPC_tarExtract to produce output of tar -c -v -f - --totals
104			# so that we can just pipe tar into it!
105			$Conf{tarExtractEmulateTotals} = 1;
106			$Conf{TarClientCmd} = 'zcat __restore_path__';
107
108			_END_OF_CONF_
109
110			$conf_restore .= <<'_END_OF_CONF_' if ($restore_via_temp_dir);
111
112	dpavlin	356	$Conf{TarClientCmd} = '$tarPath -c -v -f - -C __inc_tmp_dir__ --totals';
113
114	dpavlin	340	_END_OF_CONF_
115
116	dpavlin	349	$conf_restore =~ s/__share__/$share/gs;
117	dpavlin	356	$conf_restore =~ s/__inc_tmp_dir__/$inc_tmp_dir/gs;
118	dpavlin	361	$conf_restore =~ s/__restore_path__/$restore_path/gs;
119	dpavlin	340
120	dpavlin	361	$conf_restore .= "\n1;\n";
121
122	dpavlin	342	my $config_file = "$bpc->{TopDir}/conf/${host}.pl";
123	dpavlin	340
124			open(my $host_fh, '>', $config_file) \|\| die "can't open $config_file: $!";
125			print $host_fh $conf_restore \|\| die "can't write configuration in $config_file: $!";
126			close($host_fh) \|\| die "can't close $config_file: $!";
127
128			warn "written config:\n$conf_restore\n";
129
130			sub restore_increment {
131			my $path = shift \|\| die "need path!";
132
133	dpavlin	347	if ($path !~ m/\.tar\.gz$/i) {
134	dpavlin	356	print "# skipping $path, not .tar.gz increment\n";
135	dpavlin	347	return;
136			}
137
138	dpavlin	361	if ($restore_via_temp_dir) {
139	dpavlin	333
140	dpavlin	361	print "restoring $path (extracting to create increment)\n";
141	dpavlin	360
142	dpavlin	361	cleanup_inc_temp_dir() if ($cleanup_before_increment);
143	dpavlin	333
144	dpavlin	361	my $cmd = "cd $inc_tmp_dir && tar xfz $path";
145			system($cmd) == 0 or die "can't execute: $cmd -- $?\n";
146
147			} else {
148
149			print "using $path to create increment\n";
150
151			if (-e $restore_path) {
152			unlink $restore_path \|\| die "can't remove $restore_path: $!\n";
153			}
154			symlink $path, $restore_path \|\| die "can't create link $path -> $restore_path: $!\n";
155
156
157			}
158
159	dpavlin	356	print "starting import into BackupPC pool\n";
160
161	dpavlin	344	my $user = $host_info->{$host}->{user} \|\| die "can't get user for host $host";
162	dpavlin	333
163	dpavlin	344	$bpc->ServerMesg("log User $user started recovery from increment $path");
164
165	dpavlin	348	my @backups = $bpc->BackupInfoRead( $host );
166
167			my $full = 1;
168			foreach my $b (@backups) {
169			$full = 0 if ($b->{type} eq 'full');
170			}
171
172	dpavlin	344	my $r = $bpc->ServerMesg("backup $host $host $user $full");
173	dpavlin	348	print "backup ", $full ? 'full' : 'incremental', " --> $r";
174	dpavlin	342	die $r if ($r =~ m/^error/);
175	dpavlin	333
176			# Status_backup_in_progress
177			# Status_idle
178
179	dpavlin	340	my ($state,$last_state) = ('','x');
180	dpavlin	333
181			while ($state ne 'Status_idle') {
182			my $s = $bpc->ServerMesg("status hosts");
183			my %Status;
184			{
185			eval "$s";
186			}
187			$state = $Status{restore}->{state};
188	dpavlin	342
189			die $state if ($state =~ m/^error/);
190
191	dpavlin	340	if ($state ne $last_state) {
192			print "\n$state"; #, Dumper($Status{restore});
193			} else {
194			print ".";
195			}
196			$last_state = $state;
197	dpavlin	333	sleep 1;
198			}
199	dpavlin	340	print "\n";
200	dpavlin	333	}
201
202	dpavlin	340	# now, start restore
203	dpavlin	333
204	dpavlin	340	foreach my $restore_inc (@ARGV) {
205
206			if (-d $restore_inc) {
207
208			find({ wanted => sub {
209			restore_increment( $File::Find::name );
210			}, follow => 0 }, $restore_inc);
211
212	dpavlin	347	} elsif (-f $restore_inc) {
213	dpavlin	340	restore_increment( $restore_inc );
214			} else {
215	dpavlin	347	warn "skipped: $restore_inc, not file or directory\n";
216	dpavlin	340	}
217
218			}
219
220			#unlink $config_file \|\| die "can't remove $config_file: $!";
221	dpavlin	357
222			rmtree($inc_tmp_dir) if (-e $inc_tmp_dir);