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#!/bin/perl |
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#============================================================= -*-perl-*- |
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# |
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# BackupPC_nightly: Nightly cleanup & statistics script. |
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# |
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# DESCRIPTION |
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# |
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# BackupPC_nightly performs several administrative tasks: |
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# |
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# - monthly aging of per-PC log files (only with -m option) |
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# |
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# - pruning files from pool no longer used (ie: those with only one |
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# hard link). |
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# |
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# - sending email to users and administrators (only with -m option) |
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# |
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# Usage: BackupPC_nightly [-m] poolRangeStart poolRangeEnd |
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# |
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# Flags: |
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# |
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# -m Do monthly aging of per-PC log files and sending of email. |
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# Otherise, BackupPC_nightly just does pool pruning. |
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# |
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# The poolRangeStart and poolRangeEnd arguments are integers from 0 to 255. |
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# These specify which parts of the pool to process. There are 256 2nd-level |
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# directories in the pool (0/0, 0/1, ..., f/e, f/f). BackupPC_nightly |
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# processes the given subset of this list (0 means 0/0, 255 means f/f). |
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# Therefore, arguments of 0 255 process the entire pool, 0 127 does |
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# the first half (ie: 0/0 through 7/f), 127 255 does the other half |
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# (eg: 8/0 through f/f) and 0 15 does just the first 1/16 of the pool |
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# (ie: 0/0 through 0/f). |
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# |
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# AUTHOR |
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# Craig Barratt <cbarratt@users.sourceforge.net> |
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# |
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# COPYRIGHT |
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# Copyright (C) 2001-2004 Craig Barratt |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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#======================================================================== |
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# |
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# Version 2.1.2, released 5 Sep 2005. |
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# |
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# See http://backuppc.sourceforge.net. |
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# |
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#======================================================================== |
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|
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use strict; |
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no utf8; |
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use lib "__INSTALLDIR__/lib"; |
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use BackupPC::Lib; |
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use BackupPC::FileZIO; |
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use Getopt::Std; |
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|
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use File::Find; |
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use File::Path; |
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use Data::Dumper; |
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|
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die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) ); |
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my $TopDir = $bpc->TopDir(); |
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my $BinDir = $bpc->BinDir(); |
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my %Conf = $bpc->Conf(); |
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my(%Status, %Info, %Jobs, @BgQueue, @UserQueue, @CmdQueue); |
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|
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$bpc->ChildInit(); |
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|
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my %opts; |
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if ( !getopts("m", \%opts) || @ARGV != 2 ) { |
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print("usage: $0 [-m] poolRangeStart poolRangeEnd\n"); |
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exit(1); |
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} |
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if ( $ARGV[0] !~ /^(\d+)$/ || $1 > 255 ) { |
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print("$0: bad poolRangeStart '$ARGV[0]'\n"); |
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exit(1); |
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} |
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my $poolRangeStart = $1; |
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if ( $ARGV[1] !~ /^(\d+)$/ || $1 > 255 ) { |
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print("$0: bad poolRangeEnd '$ARGV[1]'\n"); |
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exit(1); |
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} |
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my $poolRangeEnd = $1; |
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|
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if ( $opts{m} ) { |
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my $err = $bpc->ServerConnect($Conf{ServerHost}, $Conf{ServerPort}); |
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if ( $err ) { |
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print("Can't connect to server ($err)\n"); |
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exit(1); |
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} |
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my $reply = $bpc->ServerMesg("status hosts"); |
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$reply = $1 if ( $reply =~ /(.*)/s ); |
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eval($reply); |
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} |
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|
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########################################################################### |
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# When BackupPC_nightly starts, BackupPC will not run any simultaneous |
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# BackupPC_dump commands. We first do things that contend with |
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# BackupPC_dump, eg: aging per-PC log files etc. |
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########################################################################### |
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doPerPCLogFileAging() if ( $opts{m} ); |
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|
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########################################################################### |
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# Get statistics on the pool, and remove files that have only one link. |
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########################################################################### |
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|
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my $fileCnt; # total number of files |
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my $dirCnt; # total number of directories |
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my $blkCnt; # total block size of files |
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my $fileCntRm; # total number of removed files |
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my $blkCntRm; # total block size of removed files |
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my $blkCnt2; # total block size of files with just 2 links |
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# (ie: files that only occur once among all backups) |
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my $fileCntRep; # total number of file names containing "_", ie: files |
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# that have repeated md5 checksums |
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my $fileRepMax; # worse case number of files that have repeated checksums |
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# (ie: max(nnn+1) for all names xxxxxxxxxxxxxxxx_nnn) |
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my $fileLinkMax; # maximum number of hardlinks on a pool file |
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my $fileCntRename; # number of renamed files (to keep file numbering |
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# contiguous) |
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my %FixList; # list of paths that need to be renamed to avoid |
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# new holes |
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my @hexChars = qw(0 1 2 3 4 5 6 7 8 9 a b c d e f); |
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|
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for my $pool ( qw(pool cpool) ) { |
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for ( my $i = $poolRangeStart ; $i <= $poolRangeEnd ; $i++ ) { |
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my $dir = "$hexChars[int($i / 16)]/$hexChars[$i % 16]"; |
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# print("Doing $pool/$dir\n") if ( ($i % 16) == 0 ); |
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$fileCnt = 0; |
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$dirCnt = 0; |
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$blkCnt = 0; |
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$fileCntRm = 0; |
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$blkCntRm = 0; |
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$blkCnt2 = 0; |
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$fileCntRep = 0; |
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$fileRepMax = 0; |
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$fileLinkMax = 0; |
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$fileCntRename = 0; |
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%FixList = (); |
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find({wanted => \&GetPoolStats}, "$TopDir/$pool/$dir") |
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if ( -d "$TopDir/$pool/$dir" ); |
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my $kb = $blkCnt / 2; |
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my $kbRm = $blkCntRm / 2; |
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my $kb2 = $blkCnt2 / 2; |
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|
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# |
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# Main BackupPC_nightly counts the top-level directory |
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# |
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$dirCnt++ if ( $opts{m} && -d "$TopDir/$pool" && $i == 0 ); |
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|
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# |
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# Also count the next level directories |
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# |
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$dirCnt++ if ( ($i % 16) == 0 |
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&& -d "$TopDir/$pool/$hexChars[int($i / 16)]" ); |
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|
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# |
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# Now make sure that files with repeated checksums are still |
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# sequentially numbered |
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# |
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foreach my $name ( sort(keys(%FixList)) ) { |
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my $rmCnt = $FixList{$name} + 1; |
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my $new = -1; |
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for ( my $old = -1 ; ; $old++ ) { |
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my $oldName = $name; |
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$oldName .= "_$old" if ( $old >= 0 ); |
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if ( !-f $oldName ) { |
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# |
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# We know we are done when we have missed at least |
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# the number of files that were removed from this |
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# base name, plus a couple just to be sure |
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# |
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last if ( $rmCnt-- <= 0 ); |
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next; |
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} |
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my $newName = $name; |
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$newName .= "_$new" if ( $new >= 0 ); |
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$new++; |
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next if ( $oldName eq $newName ); |
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rename($oldName, $newName); |
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$fileCntRename++; |
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} |
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} |
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print("BackupPC_stats $i = $pool,$fileCnt,$dirCnt,$kb,$kb2,$kbRm," |
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. "$fileCntRm,$fileCntRep,$fileRepMax," |
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. "$fileCntRename,$fileLinkMax\n"); |
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} |
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} |
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|
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########################################################################### |
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# Tell BackupPC that it is now ok to start running BackupPC_dump |
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# commands. We are guaranteed that no BackupPC_link commands will |
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# run since only a single CmdQueue command runs at a time, and |
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# that means we are safe. |
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########################################################################### |
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printf("BackupPC_nightly lock_off\n"); |
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|
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########################################################################### |
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# Send email |
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########################################################################### |
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if ( $opts{m} ) { |
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print("log BackupPC_nightly now running BackupPC_sendEmail\n"); |
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system("$BinDir/BackupPC_sendEmail") |
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} |
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|
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# |
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# Do per-PC log file aging |
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# |
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sub doPerPCLogFileAging |
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{ |
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my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time); |
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if ( $mday == 1 ) { |
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foreach my $host ( keys(%Status) ) { |
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my $lastLog = $Conf{MaxOldPerPCLogFiles} - 1; |
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unlink("$TopDir/pc/$host/LOG.$lastLog") |
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if ( -f "$TopDir/pc/$host/LOG.$lastLog" ); |
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unlink("$TopDir/pc/$host/LOG.$lastLog.z") |
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if ( -f "$TopDir/pc/$host/LOG.$lastLog.z" ); |
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for ( my $i = $lastLog - 1 ; $i >= 0 ; $i-- ) { |
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my $j = $i + 1; |
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if ( -f "$TopDir/pc/$host/LOG.$i" ) { |
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rename("$TopDir/pc/$host/LOG.$i", |
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"$TopDir/pc/$host/LOG.$j"); |
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} elsif ( -f "$TopDir/pc/$host/LOG.$i.z" ) { |
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rename("$TopDir/pc/$host/LOG.$i.z", |
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"$TopDir/pc/$host/LOG.$j.z"); |
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} |
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} |
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# |
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# Compress the log file LOG -> LOG.0.z (if enabled). |
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# Otherwise, just rename LOG -> LOG.0. |
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# |
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BackupPC::FileZIO->compressCopy("$TopDir/pc/$host/LOG", |
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"$TopDir/pc/$host/LOG.0.z", |
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"$TopDir/pc/$host/LOG.0", |
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$Conf{CompressLevel}, 1); |
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open(LOG, ">", "$TopDir/pc/$host/LOG") && close(LOG); |
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} |
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} |
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} |
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|
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sub GetPoolStats |
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{ |
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my($nlinks, $nblocks) = (lstat($_))[3, 12]; |
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|
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if ( -d _ ) { |
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$dirCnt++; |
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return; |
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} elsif ( ! -f _ ) { |
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return; |
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} |
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if ( $nlinks == 1 ) { |
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$blkCntRm += $nblocks; |
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$fileCntRm++; |
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unlink($_); |
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# |
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# We must keep repeated files numbered sequential (ie: files |
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# that have the same checksum are appended with _0, _1 etc). |
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# There are two cases: we remove the base file xxxx, but xxxx_0 |
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# exists, or we remove any file of the form xxxx_nnn. We remember |
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# the base name and fix it up later (not in the middle of find). |
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# |
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my($baseName); |
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($baseName = $File::Find::name) =~ s/_\d+$//; |
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$FixList{$baseName}++; |
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} else { |
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if ( /_(\d+)$/ ) { |
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$fileRepMax = $1 + 1 if ( $fileRepMax <= $1 ); |
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$fileCntRep++; |
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} |
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$fileCnt += 1; |
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$blkCnt += $nblocks; |
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$blkCnt2 += $nblocks if ( $nlinks == 2 ); |
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$fileLinkMax = $nlinks if ( $fileLinkMax < $nlinks ); |
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} |
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} |
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