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_increments {

        foreach my $path (@_) {
                next unless ($path);    # skip 0 element which is undef

                print "extracting $path\n";

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

#       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";

        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

my $increments;

foreach my $restore_inc (@ARGV) {

        sub extract_filename {
                my $path = shift || die "no path?";
                if ($path =~ m#^(.*)/(\w+)_(\w+)_(\d+)\.tar\.gz$#) {
                        my ($path,$host,$share,$num) = ($1,$2,$3,$4);
                        $increments->{$host}->{$share}->{$num}->[1] = "${path}/${host}_${share}_${num}.tar.gz";
                } elsif ($path =~ m#^(.*)/(\w+)_(\w+)_(\d+)/(\d+)\.tar.gz$#) {
                        my ($path,$host,$share,$num,$part) = ($1,$2,$3,$4,$5);
                        $increments->{$host}->{$share}->{$num}->[$part] = "${path}/${host}_${share}_${num}/${part}.tar.gz";
                } else {
                        print "# skipped: $path\n";
                }
        }

        if (-d $restore_inc) {

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

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

}

print Dumper($increments);

cleanup_inc_temp_dir();

foreach my $host (sort keys %{ $increments }) {
        foreach my $share (sort keys %{ $increments->{$host} }) {
                foreach my $num (sort keys %{ $increments->{$host}->{$share} }) {
                        print "# about to restore $host $share $num\n";
                        my @parts = @{ $increments->{$host}->{$share}->{$num} };
                        my $msg = "started recovery of ${host}:${share}#${num} with " . $#parts . " parts";

                        print "LOG: $msg\n";
                        $bpc->ServerMesg("log $msg");

                        restore_increments( @parts );
                }
        }
}
                

#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	dpavlin	362	sub restore_increments {
131	dpavlin	340
132	dpavlin	362	foreach my $path (@_) {
133			next unless ($path); # skip 0 element which is undef
134	dpavlin	347
135	dpavlin	362	print "extracting $path\n";
136	dpavlin	333
137	dpavlin	361	my $cmd = "cd $inc_tmp_dir && tar xfz $path";
138			system($cmd) == 0 or die "can't execute: $cmd -- $?\n";
139
140	dpavlin	362	}
141	dpavlin	361
142	dpavlin	362	# print "using $path to create increment\n";
143			#
144			# if (-e $restore_path) {
145			# unlink $restore_path \|\| die "can't remove $restore_path: $!\n";
146			# }
147			# symlink $path, $restore_path \|\| die "can't create link $path -> $restore_path: $!\n";
148	dpavlin	361
149	dpavlin	356	print "starting import into BackupPC pool\n";
150
151	dpavlin	344	my $user = $host_info->{$host}->{user} \|\| die "can't get user for host $host";
152	dpavlin	333
153	dpavlin	348	my @backups = $bpc->BackupInfoRead( $host );
154
155			my $full = 1;
156			foreach my $b (@backups) {
157			$full = 0 if ($b->{type} eq 'full');
158			}
159
160	dpavlin	344	my $r = $bpc->ServerMesg("backup $host $host $user $full");
161	dpavlin	348	print "backup ", $full ? 'full' : 'incremental', " --> $r";
162	dpavlin	342	die $r if ($r =~ m/^error/);
163	dpavlin	333
164			# Status_backup_in_progress
165			# Status_idle
166
167	dpavlin	340	my ($state,$last_state) = ('','x');
168	dpavlin	333
169			while ($state ne 'Status_idle') {
170			my $s = $bpc->ServerMesg("status hosts");
171			my %Status;
172			{
173			eval "$s";
174			}
175			$state = $Status{restore}->{state};
176	dpavlin	342
177			die $state if ($state =~ m/^error/);
178
179	dpavlin	340	if ($state ne $last_state) {
180			print "\n$state"; #, Dumper($Status{restore});
181			} else {
182			print ".";
183			}
184			$last_state = $state;
185	dpavlin	333	sleep 1;
186			}
187	dpavlin	340	print "\n";
188	dpavlin	333	}
189
190	dpavlin	340	# now, start restore
191	dpavlin	333
192	dpavlin	362	my $increments;
193
194	dpavlin	340	foreach my $restore_inc (@ARGV) {
195
196	dpavlin	362	sub extract_filename {
197			my $path = shift \|\| die "no path?";
198			if ($path =~ m#^(.*)/(\w+)_(\w+)_(\d+)\.tar\.gz$#) {
199			my ($path,$host,$share,$num) = ($1,$2,$3,$4);
200			$increments->{$host}->{$share}->{$num}->[1] = "${path}/${host}_${share}_${num}.tar.gz";
201			} elsif ($path =~ m#^(.*)/(\w+)_(\w+)_(\d+)/(\d+)\.tar.gz$#) {
202			my ($path,$host,$share,$num,$part) = ($1,$2,$3,$4,$5);
203			$increments->{$host}->{$share}->{$num}->[$part] = "${path}/${host}_${share}_${num}/${part}.tar.gz";
204			} else {
205			print "# skipped: $path\n";
206			}
207			}
208
209	dpavlin	340	if (-d $restore_inc) {
210
211			find({ wanted => sub {
212	dpavlin	362	extract_filename( $File::Find::name );
213	dpavlin	340	}, follow => 0 }, $restore_inc);
214
215	dpavlin	347	} elsif (-f $restore_inc) {
216	dpavlin	362	extract_filename( $restore_inc );
217	dpavlin	340	} else {
218	dpavlin	347	warn "skipped: $restore_inc, not file or directory\n";
219	dpavlin	340	}
220
221			}
222
223	dpavlin	362	print Dumper($increments);
224
225			cleanup_inc_temp_dir();
226
227			foreach my $host (sort keys %{ $increments }) {
228			foreach my $share (sort keys %{ $increments->{$host} }) {
229			foreach my $num (sort keys %{ $increments->{$host}->{$share} }) {
230			print "# about to restore $host $share $num\n";
231			my @parts = @{ $increments->{$host}->{$share}->{$num} };
232			my $msg = "started recovery of ${host}:${share}#${num} with " . $#parts . " parts";
233
234			print "LOG: $msg\n";
235			$bpc->ServerMesg("log $msg");
236
237			restore_increments( @parts );
238			}
239			}
240			}
241
242
243	dpavlin	340	#unlink $config_file \|\| die "can't remove $config_file: $!";
244	dpavlin	357
245			rmtree($inc_tmp_dir) if (-e $inc_tmp_dir);