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pve-6.0-7-diff-backup-addon
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#!/bin/bash
set -eo pipefail
echo "Proxmox VE 6.0-7 - differential backup support, v3"
echo "Kamil Trzcinski, http://ayufan.eu/, [email protected]"
echo ""
patch_diff() {
grep -A 10000 "^__PATCH__$" "$0"
}
patch_revert() {
patch_diff | patch --reverse --quiet -p1 --batch --ignore-whitespace -d "$@"
}
patch_apply() {
patch_diff | patch --forward -p1 --batch --ignore-whitespace -d "$@"
}
print_and_run() {
echo "$ $@"
"$@"
}
patch_test() {
local TYPE="$1"
local VMID="$2"
local EXT="$3"
local TARGET_VMID="$4"
shift 4
echo "Testing type=$TYPE vmid=$VMID:$TARGET_VMID ext=$ext flags=$@..."
print_and_run rm -rf /var/lib/vz/dump/vzdump-$TYPE-$VMID-*
case $TYPE in
qemu)
print_and_run qm status "$VMID"
print_and_run vzdump --fullbackup=0 "$@" $VMID
print_and_run vzdump --fullbackup=5 "$@" $VMID
print_and_run qmrestore --force=true /var/lib/vz/dump/vzdump-qemu-$VMID-*.$EXT $TARGET_VMID
print_and_run qmrestore --force=true /var/lib/vz/dump/vzdump-qemu-$VMID-*.$EXT-*.vcdiff $TARGET_VMID
;;
lxc)
print_and_run pct status "$VMID"
print_and_run vzdump --fullbackup=0 "$@" $VMID
print_and_run vzdump --fullbackup=5 "$@" $VMID
print_and_run pct restore $TARGET_VMID /var/lib/vz/dump/vzdump-lxc-$VMID-*.$EXT --force=true
print_and_run pct restore $TARGET_VMID /var/lib/vz/dump/vzdump-lxc-$VMID-*.$EXT-*.vcdiff --force=true
;;
esac
}
case $1 in
revert)
if patch_revert / --dry-run
then
patch_revert /
echo "RESTORED"
else
echo "FAILED to restore!"
exit 1
fi
echo ""
print_and_run service pveproxy restart
print_and_run service pvedaemon restart
;;
apply)
if patch_apply / --dry-run
then
print_and_run patch_apply /
echo "APPLIED"
else
echo "FAILED to apply!"
exit 1
fi
echo ""
print_and_run service pveproxy restart
print_and_run service pvedaemon restart
;;
reinstall)
PATHS=$(patch_diff | grep "^+++ b/" | sed 's/^\+\+\+ b//g')
echo "Affected file paths:"
echo "$PATHS"
echo ""
PACKAGES=$(dpkg --search $PATHS | cut -d: -f1 | tr -d ,)
echo "Affected packages:"
echo "$PACKAGES"
echo ""
echo "Press Enter to continue, or Ctrl-C to cancel."
read PROMPT
apt-get --reinstall install $PACKAGES
;;
test)
print_and_run patch_apply / --dry-run --batch
;;
patch)
patch_diff
;;
selftest-qemu)
echo "This is destructive command that requires:"
echo ""
echo "- the VM500 present"
echo "- and VM510 empty"
echo ""
if ! qm status 500 &> /dev/null; then
echo "The VM500 has to be present!"
exit 1
fi
echo "Press enter to continue, Ctrl-C to abort"
read LINE
patch_test qemu 500 vma 510
patch_test qemu 500 vma.lzo 510 --compress=lzo
;;
selftest-lxc)
echo "This is destructive command that requires:"
echo ""
echo "- the CT501 present"
echo "- and CT511 empty"
echo ""
if ! pct status 501 &> /dev/null; then
echo "The CT501 has to be present!"
exit 1
fi
echo "Press enter to continue, Ctrl-C to abort"
read LINE
patch_test lxc 501 tar 511
patch_test lxc 501 tar.lzo 511 --compress=lzo
;;
*)
echo "usage: $0 [apply|revert|test|patch]"
exit 1
;;
esac
exit 0
__PATCH__
diff --git a/usr/share/pve-manager/js/pvemanagerlib.js b/usr/share/pve-manager/js/pvemanagerlib.js
index 7a92574..d2bca5b 100644
--- a/usr/share/pve-manager/js/pvemanagerlib.js
+++ b/usr/share/pve-manager/js/pvemanagerlib.js
@@ -38179,6 +42309,25 @@ Ext.define('PVE.dc.BackupEdit', {
name: 'mode'
},
{
+ xtype: 'numberfield',
+ fieldLabel: gettext('Max Backups'),
+ name: 'maxfiles',
+ minValue: 0,
+ maxValue: 365,
+ value: me.create ? '1' : undefined,
+ allowBlank: false
+ },
+ {
+ xtype: 'numberfield',
+ fieldLabel: gettext('Full Backup Every'),
+ name: 'fullbackup',
+ emptyText : gettext('Days'),
+ minValue: 0,
+ maxValue: 60,
+ value: me.create ? '0' : undefined,
+ allowBlank: true
+ },
+ {
xtype: 'proxmoxcheckbox',
fieldLabel: gettext('Enable'),
name: 'enabled',
diff --git a/usr/share/perl5/PVE/LXC/Create.pm b/usr/share/perl5/PVE/LXC/Create.pm
index cf73dba..e860444 100644
--- a/usr/share/perl5/PVE/LXC/Create.pm
+++ b/usr/share/perl5/PVE/LXC/Create.pm
@@ -71,7 +71,10 @@ sub restore_archive {
my $archive_fh;
my $tar_input = '<&STDIN';
my @compression_opt;
- if ($archive ne '-') {
+
+ if (PVE::Storage::get_full_backup($archive)) {
+ # ignore
+ } elsif ($archive ne '-') {
# GNU tar refuses to autodetect this... *sigh*
my %compression_map = (
'.gz' => '-z',
@@ -106,8 +109,19 @@ sub restore_archive {
push @$cmd, '--anchored';
push @$cmd, '--exclude' , './dev/*';
+ $cmd = [ $cmd ];
+
+ if (my $fullbackup = PVE::Storage::get_full_backup($archive)) {
+ print "extracting from differential archive, using full backup '$fullbackup'\n";
+
+ $cmd = [
+ [ "pve-xdelta3", "-q", "-d", "-c", "-R", "-s", $fullbackup, $archive ],
+ [ @$userns_cmd, 'tar', 'xpf', '-', '--numeric-owner', '--totals', @PVE::Storage::Plugin::COMMON_TAR_FLAGS, '-C', $rootdir, '--skip-old-files', '--anchored', '--exclude' , './dev/*']
+ ];
+ }
+
if (defined($bwlimit)) {
- $cmd = [ ['cstream', '-t', $bwlimit*1024], $cmd ];
+ splice @$cmd, 1, 0, ['cstream', '-t', $bwlimit*1024];
}
if ($archive eq '-') {
diff --git a/usr/share/perl5/PVE/QemuServer.pm b/usr/share/perl5/PVE/QemuServer.pm
index 7becdeb..516d5a5 100644
--- a/usr/share/perl5/PVE/QemuServer.pm
+++ b/usr/share/perl5/PVE/QemuServer.pm
@@ -6029,8 +6029,18 @@ sub tar_archive_read_firstfile {
die "ERROR: file '$archive' does not exist\n" if ! -f $archive;
+ my $cmd = undef;
+
+ if ($archive =~ m!([^/]*vzdump-([a-z]*)-(\d*)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?)))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?$!) {
+ my $fullbackup = $archive;
+ $fullbackup =~ s!([^/]*vzdump-([a-z]+)-(\d+)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?)))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?!$1!;
+ $cmd = "-|pve-xdelta3 -q -d -c -R -s '$fullbackup' '$archive' |tar t|";
+ } else {
+ $cmd = "-|tar tf '$archive'|";
+ }
+
# try to detect archive type first
- my $pid = open (my $fh, '-|', 'tar', 'tf', $archive) ||
+ my $pid = open (my $fh, $cmd) ||
die "unable to open file '$archive'\n";
my $firstfile = <$fh>;
kill 15, $pid;
@@ -6382,7 +6392,13 @@ sub restore_vma_archive {
}
}
- if ($comp) {
+ if ($archive =~ m!([^/]*vzdump-([a-z]*)-(\d*)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(vma(\.(gz|lzo))?))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?$!) {
+ my $fullbackup = $archive;
+ $fullbackup =~ s!([^/]*vzdump-([a-z]+)-(\d+)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(vma(\.(gz|lzo))?))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?!$1!;
+ print "extracting from differential archive, using full backup '$fullbackup'\n";
+ my $uncomp = ['pve-xdelta3', '-q', '-d', '-c', '-R', '-s', $fullbackup, $readfrom];
+ $add_pipe->($uncomp);
+ } elsif ($comp) {
my $cmd;
if ($comp eq 'gzip') {
$cmd = ['zcat', $readfrom];
@@ -6702,8 +6718,17 @@ sub restore_tar_archive {
# tar option "xf" does not autodetect compression when read from STDIN,
# so we pipe to zcat
- my $cmd = "zcat -f|tar xf " . PVE::Tools::shellquote($archive) . " " .
- PVE::Tools::shellquote("--to-command=$tocmd");
+ my $cmd = undef;
+
+ if ($archive =~ m!([^/]*vzdump-([a-z]*)-(\d*)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?)))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?$!) {
+ my $fullbackup = $archive;
+ $fullbackup =~ s!([^/]*vzdump-([a-z]+)-(\d+)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?)))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?!$1!;
+ print "extracting from differential archive, using full backup '$fullbackup'\n";
+ $cmd = "pve-xdelta3 -q -d -c -R -s '$fullbackup' '$archive' |tar x " . PVE::Tools::shellquote("--to-command=$tocmd");
+ } else {
+ $cmd = "zcat -f|tar xf " . PVE::Tools::shellquote($archive) . " " .
+ PVE::Tools::shellquote("--to-command=$tocmd");
+ }
my $tmpdir = "/var/tmp/vzdumptmp$$";
mkpath $tmpdir;
diff --git a/usr/share/perl5/PVE/Storage.pm b/usr/share/perl5/PVE/Storage.pm
index 53bdd24..72e10bb 100644
--- a/usr/share/perl5/PVE/Storage.pm
+++ b/usr/share/perl5/PVE/Storage.pm
@@ -512,7 +494,7 @@ sub path_to_volume_id {
} elsif ($path =~ m!^$privatedir/(\d+)$!) {
my $vmid = $1;
return ('rootdir', "$sid:rootdir/$vmid");
- } elsif ($path =~ m!^$backupdir/([^/]+\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo))$!) {
+ } elsif ($path =~ m!^$backupdir/([^/]+\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo|vcdiff|vcdiff\.gz|vcdiff\.lzo))$!) {
my $name = $1;
return ('iso', "$sid:backup/$name");
}
@@ -1263,13 +1334,30 @@ sub foreach_volid {
}
}
+sub get_full_backup {
+ my ($archive) = @_;
+ if ($archive =~ m!([^/]*vzdump-([a-z]*)-(\d*)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?)))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?$!) {
+ my $fullbackup = $archive;
+ $fullbackup =~ s!([^/]*vzdump-([a-z]+)-(\d+)-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?)))--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?!$1!;
+ return $fullbackup;
+ }
+ return undef;
+}
+
sub extract_vzdump_config_tar {
my ($archive, $conf_re) = @_;
die "ERROR: file '$archive' does not exist\n" if ! -f $archive;
- my $pid = open(my $fh, '-|', 'tar', 'tf', $archive) ||
- die "unable to open file '$archive'\n";
+ my $pid;
+ my $fh;
+
+ if (my $fullbackup = get_full_backup($archive)) {
+ $pid = open($fh, '-|', 'bash', '-c' , "pve-xdelta3 -q -d -c -R -s '$fullbackup' '$archive' | tar tf -")
+ || die "unable to open file '$archive'\n";
+ } else {
+ $pid = open($fh, '-|', 'tar', 'tf', $archive) || die "unable to open file '$archive'\n";
+ }
my $file;
while (defined($file = <$fh>)) {
@@ -1292,7 +1380,15 @@ sub extract_vzdump_config_tar {
$raw .= "$output\n";
};
- PVE::Tools::run_command(['tar', '-xpOf', $archive, $file, '--occurrence'], outfunc => $out);
+ my $cmd = ['tar', '-xpOf', $archive, $file, '--occurrence'];
+ if (my $fullbackup = get_full_backup($archive)) {
+ $cmd = [
+ [ "bash", "-c", "pve-xdelta3 -q -d -c -R -s '$fullbackup' '$archive' || true" ],
+ [ 'tar', '-xpOf', '-', $file, '--occurrence' ]
+ ];
+ }
+
+ PVE::Tools::run_command($cmd, outfunc => $out);
return wantarray ? ($raw, $file) : $raw;
}
diff --git a/usr/share/perl5/PVE/Storage/Plugin.pm b/usr/share/perl5/PVE/Storage/Plugin.pm
index 163871d..da6ce2d 100644
--- a/usr/share/perl5/PVE/Storage/Plugin.pm
+++ b/usr/share/perl5/PVE/Storage/Plugin.pm
@@ -423,7 +398,7 @@ sub parse_volname {
return ('vztmpl', $1);
} elsif ($volname =~ m!^rootdir/(\d+)$!) {
return ('rootdir', $1, $1);
- } elsif ($volname =~ m!^backup/([^/]+(\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo)))$!) {
+ } elsif ($volname =~ m!^backup/([^/]+(\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo|vcdiff|vcdiff\.gz|vcdiff\.lzo)))$!) {
my $fn = $1;
if ($fn =~ m/^vzdump-(openvz|lxc|qemu)-(\d+)-.+/) {
return ('backup', $fn, $2);
@@ -913,7 +925,7 @@ my $get_subdir_files = sub {
} elsif ($tt eq 'backup') {
next if defined($vmid) && $fn !~ m/\S+-$vmid-\S+/;
- next if $fn !~ m!/([^/]+\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo))$!;
+ next if $fn !~ m!/([^/]+\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo|vcdiff|vcdiff\.gz|vcdiff\.lzo))$!;
$info = { volid => "$sid:backup/$1", format => $2 };
diff --git a/usr/share/perl5/PVE/VZDump.pm b/usr/share/perl5/PVE/VZDump.pm
index 510d964..d950ee2 100644
--- a/usr/share/perl5/PVE/VZDump.pm
+++ b/usr/share/perl5/PVE/VZDump.pm
@@ -8,6 +10,7 @@ use IO::File;
use IO::Select;
use IPC::Open3;
use File::Path;
+use File::Basename;
use PVE::RPCEnvironment;
use PVE::Storage;
use PVE::Cluster qw(cfs_read_file);
@@ -169,6 +170,13 @@ my $confdesc = {
minimum => 1,
default => 1,
},
+ fullbackup => {
+ type => 'integer',
+ description => "Maximal days of validity for full backups to be used for creating differentials.",
+ optional => 1,
+ minimum => 0,
+ default => 0,
+ },
remove => {
type => 'boolean',
description => "Remove old backup files if there are more than 'maxfiles' backup files.",
@@ -737,6 +745,22 @@ sub get_backup_file_list {
return $bklist;
}
+
+sub get_differential_backup_file_list {
+ my ($dir, $bkname, $exclude_fn) = @_;
+
+ my $bklist = [];
+ foreach my $fn (<$dir/${bkname}-*>) {
+ next if $exclude_fn && $fn eq $exclude_fn;
+ if ($fn =~ m!/(${bkname}--differential-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.vcdiff(\.(gz|lzo))?)$!) {
+ $fn = "$dir/$1"; # untaint
+ my $t = timelocal ($7, $6, $5, $4, $3 - 1, $2 - 1900);
+ push @$bklist, [$fn, $t];
+ }
+ }
+
+ return $bklist;
+}
sub exec_backup_task {
my ($self, $task) = @_;
@@ -788,13 +803,40 @@ sub exec_backup_task {
if scalar(@$bklist) >= $maxfiles;
}
- my $logfile = $task->{logfile} = "$opts->{dumpdir}/$basename.log";
+ my $ext = $vmtype eq 'qemu' ? '.vma' : '.tar';
+ my ($comp, $comp_ext) = compressor_info($opts);
+ if ($comp && $comp_ext) {
+ $ext .= ".${comp_ext}";
+ }
- my $ext = $vmtype eq 'qemu' ? '.vma' : '.tar';
- my ($comp, $comp_ext) = compressor_info($opts);
- if ($comp && $comp_ext) {
- $ext .= ".${comp_ext}";
- }
+ my $fullbackup = undef;
+ if ($opts->{fullbackup} && !$opts->{stdout}) {
+ my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime();
+ my $bklist = get_backup_file_list($opts->{dumpdir}, $bkname);
+ $bklist = [ sort { $b->[1] <=> $a->[1] } @$bklist ];
+ my $mintime = timelocal($sec, $min, $hour, $mday, $mon, $year) -
+ $opts->{fullbackup} * 24 * 60 * 60 -
+ 12 * 60 * 60; # - 12h just to make sure that on last day we create full backup
+
+ foreach my $d (@$bklist) {
+ next if $mintime > $d->[1];
+
+ $fullbackup = $d->[0];
+ $basename = basename($fullbackup);
+ $basename = sprintf "${basename}--differential-%04d_%02d_%02d-%02d_%02d_%02d",
+ $year + 1900, $mon + 1, $mday,
+ $hour, $min, $sec;
+ $ext = ".vcdiff";
+
+ debugmsg ('info', "doing differential backup against '$fullbackup'");
+ last;
+ }
+
+ debugmsg ('info', "doing full backup, because no backup found in last $opts->{fullbackup} day(s)")
+ if !$fullbackup;
+ }
+
+ my $logfile = $task->{logfile} = "$opts->{dumpdir}/$basename.log";
if ($opts->{stdout}) {
$task->{tarfile} = '-';
@@ -967,7 +1016,7 @@ sub exec_backup_task {
}
debugmsg ('info', "creating archive '$task->{tarfile}'", $logfd);
- $plugin->archive($task, $vmid, $task->{tmptar}, $comp);
+ $plugin->archive($task, $vmid, $task->{tmptar}, $comp, $fullbackup);
rename ($task->{tmptar}, $task->{tarfile}) ||
die "unable to rename '$task->{tmptar}' to '$task->{tarfile}'\n";
@@ -979,7 +1028,7 @@ sub exec_backup_task {
# purge older backup
- if ($maxfiles && $opts->{remove}) {
+ if ($maxfiles && $opts->{remove} && !$fullbackup) {
my $bklist = get_backup_file_list($opts->{dumpdir}, $bkname, $task->{tarfile});
$bklist = [ sort { $b->[1] <=> $a->[1] } @$bklist ];
@@ -990,6 +1039,16 @@ sub exec_backup_task {
my $logfn = $d->[0];
$logfn =~ s/\.(tgz|((tar|vma)(\.(gz|lzo))?))$/\.log/;
unlink $logfn;
+
+ my $dbklist = get_differential_backup_file_list($opts->{dumpdir}, basename($d->[0]));
+
+ foreach my $df (@$dbklist) {
+ debugmsg ('info', "delete old differential backup '$df->[0]'", $logfd);
+ unlink $df->[0];
+ $logfn = $df->[0];
+ $logfn =~ s/\.(vcdiff(\.(gz|lzo))?)$/\.log/;
+ unlink $logfn;
+ }
}
}
diff --git a/usr/share/perl5/PVE/VZDump/LXC.pm b/usr/share/perl5/PVE/VZDump/LXC.pm
index ae793dc..06a88e7 100644
--- a/usr/share/perl5/PVE/VZDump/LXC.pm
+++ b/usr/share/perl5/PVE/VZDump/LXC.pm
@@ -302,7 +296,7 @@ sub assemble {
}
sub archive {
- my ($self, $task, $vmid, $filename, $comp) = @_;
+ my ($self, $task, $vmid, $filename, $comp, $basefile) = @_;
my $disks = $task->{disks};
my @sources;
@@ -362,6 +356,7 @@ sub archive {
my $bwl = $opts->{bwlimit}*1024; # bandwidth limit for cstream
push @$cmd, [ 'cstream', '-t', $bwl ] if $opts->{bwlimit};
+ push @$cmd, [ 'pve-xdelta3', '-q', '-e', '-c', '-s', $basefile ] if $basefile;
push @$cmd, [ split(/\s+/, $comp) ] if $comp;
if ($opts->{stdout}) {
diff --git a/usr/share/perl5/PVE/VZDump/QemuServer.pm b/usr/share/perl5/PVE/VZDump/QemuServer.pm
index 70abe99..8cad998 100644
--- a/usr/share/perl5/PVE/VZDump/QemuServer.pm
+++ b/usr/share/perl5/PVE/VZDump/QemuServer.pm
@@ -237,7 +237,7 @@ sub assemble {
}
sub archive {
- my ($self, $task, $vmid, $filename, $comp) = @_;
+ my ($self, $task, $vmid, $filename, $comp, $basefile) = @_;
my $conffile = "$task->{tmpdir}/qemu-server.conf";
my $firewall = "$task->{tmpdir}/qemu-server.fw";
@@ -347,6 +347,15 @@ sub archive {
die "unable to open file '$filename' - $!\n";
}
+ if ($basefile) {
+ my $basecmd = "pve-xdelta3 -e -q -c -s '$basefile'";
+ if ($comp) {
+ $comp = "$basecmd|$comp";
+ } else {
+ $comp = $basecmd;
+ }
+ }
+
my $outfileno;
if ($comp) {
my @pipefd = POSIX::pipe();