From 7a32113752f3f32255ee76bf1f28048af2b39827 Mon Sep 17 00:00:00 2001 From: Dobrica Pavlinusic Date: Mon, 3 Jan 2011 17:21:52 +0000 Subject: [PATCH] create tar increments for DVD burning --- bin/BackupPC_incPartsUpdate | 452 ++++++++++++++++++++++++++++++++++++ 1 file changed, 452 insertions(+) create mode 100755 bin/BackupPC_incPartsUpdate diff --git a/bin/BackupPC_incPartsUpdate b/bin/BackupPC_incPartsUpdate new file mode 100755 index 0000000..21a2759 --- /dev/null +++ b/bin/BackupPC_incPartsUpdate @@ -0,0 +1,452 @@ +#!/usr/local/bin/perl -w + +use strict; +use lib "__INSTALLDIR__/lib"; + +use DBI; +use BackupPC::Lib; +use BackupPC::View; +use BackupPC::Attrib qw/:all/; +use Data::Dumper; +use Time::HiRes qw/time/; +use POSIX qw/strftime/; +use Cwd qw/abs_path/; +use File::Which; +use Archive::Tar::Streamed; +use Algorithm::Diff; +use Getopt::Std; +use File::Slurp; +use File::Pid; + +=head1 NAME + +BackupPC_incPartsUpdate + +=head1 DESCRIPTION + +Create C<.tar.gz> increments on disk calling C. + +Following options are supported (but all are optional): + +=over 4 + +=item -h hostname + +Update parts for just single C + +=item -c + +Force check for tar archives which exist on disk + +=item -d + +Turn debugging output + +=back + +=cut + +my %opt; +getopts("cdh:", \%opt ); + +my $debug = $opt{d}; +my $check = $opt{c} && print STDERR "NOTICE: tar archive check forced\n"; + +my $pid_path = abs_path($0); +$pid_path =~ s/\W+/_/g; + +my $pidfile = new File::Pid({ + file => "/tmp/$pid_path", +}); + +if (my $pid = $pidfile->running ) { + die "$0 already running: $pid\n"; +} elsif ($pidfile->pid ne $$) { + $pidfile->remove; + $pidfile = new File::Pid; +} + +print STDERR "$0 using pid ",$pidfile->pid," file ",$pidfile->file,"\n"; +$pidfile->write; + +my $bpc = BackupPC::Lib->new || die "can't create BackupPC::Lib"; +my %Conf = $bpc->Conf(); + +use BackupPC::SearchLib; +%BackupPC::SearchLib::Conf = %Conf; + +my $path = abs_path($0); +$path =~ s#/[^/]+$#/#; +my $tarIncCreate = $path .= 'BackupPC_tarIncCreate'; + +die "can't find $tarIncCreate: $!\n" unless (-x $tarIncCreate); + +my $bin; +foreach my $c (qw/gzip md5sum/) { + $bin->{$c} = which($c) || die "$0 needs $c, install it\n"; +} + +$|=1; + +my $start_t = time(); + +my $t_fmt = '%Y-%m-%d %H:%M:%S'; + +my $dsn = $Conf{SearchDSN} || die "Need SearchDSN in config.pl\n"; +my $user = $Conf{SearchUser} || ''; + +my $dbh = DBI->connect($dsn, $user, "", { RaiseError => 1, AutoCommit => 0 }); + +my $tar_dir = $Conf{InstallDir}.'/'.$Conf{GzipTempDir}; + +die "problem with $tar_dir, check GzipTempDir in configuration\n" unless (-d $tar_dir && -w $tar_dir); + +#---- subs ---- + +sub fmt_time { + my $t = shift || return; + my $out = ""; + my ($ss,$mm,$hh) = gmtime($t); + $out .= "${hh}h" if ($hh); + $out .= sprintf("%02d:%02d", $mm,$ss); + return $out; +} + +sub curr_time { + return strftime($t_fmt,localtime()); +} + +my $hsn_cache; + +sub get_backup_id($$$) { + my ($host, $share, $num) = @_; + + my $key = "$host $share $num"; + return $hsn_cache->{$key} if ($hsn_cache->{$key}); + + my $sth = $dbh->prepare(qq{ + SELECT + backups.id + FROM backups + INNER JOIN shares ON backups.shareID=shares.ID + INNER JOIN hosts ON backups.hostID = hosts.ID + WHERE hosts.name = ? and shares.name = ? and backups.num = ? + }); + $sth->execute($host, $share, $num); + my ($id) = $sth->fetchrow_array; + + $hsn_cache->{"$host $share $num"} = $id; + + print STDERR "# $host $share $num == $id\n" if ($opt{d}); + + return $id; +} + +sub backup_inc_deleted($) { + my $backup_id = shift; + my $sth_inc_deleted = $dbh->prepare(qq{ + update backups set + inc_deleted = true + where id = ? + }); + $sth_inc_deleted->execute($backup_id); +} + +sub tar_check($$$$) { + my ($host,$share,$num,$filename) = @_; + + my $t = time(); + print curr_time, " check $host:$share#$num -> $filename"; + + # depending on expected returned value this is used like: + # my $uncompress_size = get_gzip_size('/full/path/to.gz'); + # my ($compress_size, $uncompress_size) = get_gzip_size('/path.gz'); + sub get_gzip_size($) { + my $filename = shift; + die "file $filename problem: $!" unless (-r $filename); + open(my $gzip, $bin->{gzip}." -l $filename |") || die "can't gzip -l $filename: $!"; + my $line = <$gzip>; + chomp($line); + $line = <$gzip> if ($line =~ /^\s+compressed/); + + my ($comp, $uncomp) = (0,0); + + if ($line =~ m/^\s+(\d+)\s+(\d+)\s+\d+\.\d+/) { + if (wantarray) { + return [ $1, $2 ]; + } else { + return $2; + } + } else { + die "can't find size in line: $line"; + } + } + + sub check_part { + my ($host, $share, $num, $part_nr, $tar_size, $size, $md5, $items) = @_; + my $backup_id = get_backup_id($host, $share, $num); + my $sth_md5 = $dbh->prepare(qq{ + select + id, tar_size, size, md5, items + from backup_parts + where backup_id = ? and part_nr = ? + }); + + $sth_md5->execute($backup_id, $part_nr); + + if (my $row = $sth_md5->fetchrow_hashref) { + return if ( + $row->{tar_size} >= $tar_size && + $row->{size} == $size && + $row->{md5} eq $md5 && + $row->{items} == $items + ); + print ", deleting invalid backup_parts $row->{id}"; + $dbh->do(qq{ delete from backup_parts where id = $row->{id} }); + } + print ", inserting new"; + my $sth_insert = $dbh->prepare(qq{ + insert into backup_parts ( + backup_id, + part_nr, + tar_size, + size, + md5, + items + ) values (?,?,?,?,?,?) + }); + + $sth_insert->execute($backup_id, $part_nr, $tar_size, $size, $md5, $items); + $dbh->commit; + } + + my @tar_parts; + + if (-d "$tar_dir/$filename") { + print ", multi-part"; + opendir(my $dir, "$tar_dir/$filename") || die "can't readdir $tar_dir/$filename: $!"; + @tar_parts = map { my $p = $_; $p =~ s#^#${filename}/#; $p } grep { !/^\./ && !/md5/ && -f "$tar_dir/$filename/$_" } readdir($dir); + closedir($dir); + } else { + push @tar_parts, "${filename}.tar.gz"; + } + + print " [parts: ",join(", ", @tar_parts),"]" if ($opt{d}); + + my $same = 1; + my @tar_files; + + my $backup_part; + + print " reading" if ($opt{d}); + + foreach my $tarfilename (@tar_parts) { + + print "\n\t- $tarfilename"; + + my $path = "$tar_dir/$tarfilename"; + + my $size = (stat( $path ))[7] || die "can't stat $path: $!"; + + if ($size > $Conf{MaxArchiveSize}) { + print ", part bigger than media $size > $Conf{MaxArchiveSize}\n"; + return 0; + } + + print ", $size bytes"; + + + open(my $fh, "gzip -cd $path |") or die "can't open $path: $!"; + binmode($fh); + my $tar = Archive::Tar::Streamed->new($fh); + + my $tar_size_inarc = 0; + my $items = 0; + + while(my $entry = $tar->next) { + push @tar_files, $entry->name; + $items++; + $tar_size_inarc += $entry->size; + + if ($tar_size_inarc > $Conf{MaxArchiveFileSize}) { + print ", part $tarfilename is too big $tar_size_inarc > $Conf{MaxArchiveFileSize}\n"; + return 0; + } + + } + + close($fh); + + print ", $items items"; + + if ($tar_size_inarc == 0 && $items == 0) { + print ", EMPTY tar\n"; + + my $backup_id = get_backup_id($host, $share, $num); + backup_inc_deleted( $backup_id ); + + $dbh->commit; + + return 1; + } + + my $tar_size = get_gzip_size( $path ); + + # real tar size is bigger because of padding + if ($tar_size_inarc > $tar_size) { + print ", size of files in tar ($tar_size_inarc) bigger than whole tar ($tar_size)!\n"; + return 0; + } + + # + # check if md5 exists, and if not, create one + # + + my $md5_path = $path; + $md5_path =~ s/\.tar\.gz$/.md5/ || die "can't create md5 filename from $md5_path"; + if (! -e $md5_path || -z $md5_path) { + print ", creating md5"; + system( $bin->{md5sum} . " $path > $md5_path") == 0 or die "can't create md5 $path: $!"; + } else { + ## FIXME check if existing md5 is valid + } + + my $md5 = read_file( $md5_path ) || die "can't read md5sum file $md5_path: $!"; + $md5 =~ s#\s.*$##; + + # extract part number from filename + my $part_nr = 1; + $part_nr = $1 if ($tarfilename =~ m#/(\d+)\.tar\.gz#); + + # + # finally, check if backup_parts table in database is valid + # + + check_part($host, $share, $num, $part_nr, $tar_size, $size, $md5, $items); + } + + # short-cut and exit; + return $same unless($same); + + @tar_files = sort @tar_files; + print "\n\t",($#tar_files + 1), " tar files"; + + my $sth = $dbh->prepare(qq{ + SELECT path,type + FROM files + JOIN shares on shares.id = shareid + JOIN hosts on hosts.id = shares.hostid + WHERE hosts.name = ? and shares.name = ? and backupnum = ? + }); + $sth->execute($host, $share, $num); + my @db_files; + while( my $row = $sth->fetchrow_hashref ) { + + my $path = $row->{'path'} || die "no path?"; + $path =~ s#^/#./#; + $path .= '/' if ($row->{'type'} == BPC_FTYPE_DIR); + push @db_files, $path; + } + + print " ",($#db_files + 1), " database files, diff"; + + @db_files = sort @db_files; + + if ($#tar_files != $#db_files) { + $same = 0; + print " NUMBER"; + } else { + my $diff = Algorithm::Diff->new(\@tar_files, \@db_files); + while ( $diff->Next() ) { + next if $diff->Same(); + $same = 0; + print "< $_\n" for $diff->Items(1); + print "> $_\n" for $diff->Items(2); + } + } + + print " ",($same ? 'ok' : 'DIFFERENT'), + ", dur: ",fmt_time(time() - $t), "\n"; + + return $same; +} + + +#----- main + +my $sth = $dbh->prepare( qq{ + +select + backups.id as backup_id, + hosts.name as host, + shares.name as share, + backups.num as num, + backups.date, + inc_size, + parts, + count(backup_parts.backup_id) as backup_parts +from backups + join shares on backups.hostid = shares.hostid + and shares.id = backups.shareid + join hosts on shares.hostid = hosts.id + full outer join backup_parts on backups.id = backup_parts.backup_id +where not inc_deleted and backups.size > 0 +group by backups.id, hosts.name, shares.name, backups.num, backups.date, inc_size, parts, backup_parts.backup_id +order by backups.date + +} ); + +$sth->execute(); +my $num_backups = $sth->rows; +my $curr_backup = 1; + +if ($opt{h}) { + warn "making increments just for host $opt{h}\n"; +} + +while (my $row = $sth->fetchrow_hashref) { + + if ($opt{h} && $row->{host} ne $opt{h}) { + warn "skipped $row->{host}\n" if ($debug); + next; + } + + $curr_backup++; + + my $tar_file = BackupPC::SearchLib::getGzipName($row->{'host'}, $row->{'share'}, $row->{'num'}); + + # this will return -1 if file doesn't exist + my $size = BackupPC::SearchLib::get_tgz_size_by_name($tar_file); + + print "# host: ".$row->{host}.", share: ".$row->{'share'}.", backup_num:".$row->{num}." size: $size backup.size: ", $row->{inc_size},"\n" if ($opt{d}); + + if ( $row->{'inc_size'} != -1 && $size != -1 && $row->{'inc_size'} >= $size && $row->{parts} == $row->{backup_parts}) { + if ($check) { + tar_check($row->{'host'}, $row->{'share'}, $row->{'num'}, $tar_file) && next; + } else { + next; + } + } + + print curr_time, " creating $curr_backup/$num_backups ", $row->{host}, ":", $row->{share}, " #", $row->{num}, + " ", strftime('%Y-%m-%d', localtime($row->{date})), " -> $tar_file"; + + my $t = time(); + + # re-create archive? + my $cmd = qq[ $tarIncCreate -h "$row->{host}" -s "$row->{share}" -n $row->{num} -f ]; + print STDERR "## $cmd\n" if ($debug); + + if (system($cmd) != 0) { + print STDERR " FAILED, marking this backup deleted"; + backup_inc_deleted( $row->{backup_id} ); + } + + print ", dur: ",fmt_time(time() - $t), "\n"; + + $dbh->commit; + +} + +undef $sth; +$dbh->disconnect; -- 2.20.1