mirror of https://github.com/digint/btrbk
btrbk: adapted backup creation for refactored configuration
Axel Burri
parent
ef5658c1b0
commit
a269231cf9
105
btrbk
105
btrbk
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@ -63,11 +63,9 @@ my $loglevel = 1;
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my %config_defaults = (
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snapshot_dir => "_btrbk_snap",
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incremental => undef,
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init => undef,
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create => undef,
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log => undef,
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snapshot_create_always => 0, # TODO: honor this
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incremental => 1,
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receive_log => undef,
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snapshot_create_always => 0,
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snapshot_preserve_all => 1, # TODO: honor this
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snapshot_preserve_days => undef,
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snapshot_preserve_weekly => undef,
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@ -1008,47 +1006,72 @@ MAIN:
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#
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# create backups
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#
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foreach my $job (@$jobs)
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foreach my $config_vol (@{$config->{VOLUME}})
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{
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next if($job->{ABORTED});
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next if($config_vol->{ABORTED});
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my $sroot = $config_vol->{sroot} || die;
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foreach my $config_subvol (@{$config_vol->{SUBVOLUME}})
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{
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next if($config_subvol->{ABORTED});
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my $svol = $config_subvol->{svol} || die;
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my $snapshot = $config_subvol->{snapshot} || die;
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my $snapshot_name = $config_subvol->{snapshot_name} || die;
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my $sroot = $job->{sroot} || die;
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my $svol = $job->{svol} || die;
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my $droot = $job->{droot} || die;
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my $type = $job->{type} || die;
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my $snapshot = $job->{snapshot} || die;
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my $snapshot_name = $job->{snapshot_name} || die;
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my $job_opts = $job->{options} || die;
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foreach my $config_target (@{$config_subvol->{TARGET}})
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{
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next if($config_target->{ABORTED});
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my $droot = $config_target->{droot} || die;
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my $target_type = $config_target->{target_type} || die;
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DEBUG "***";
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DEBUG "*** $type\[" . join(',', map { "$_=$job_opts->{$_}" } keys(%$job_opts)) . "]";
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DEBUG "*** source: $sroot/$svol";
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DEBUG "*** dest : $droot/";
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DEBUG "***";
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INFO "Creating subvolume backup for: $sroot/$svol";
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if($target_type eq "send-receive")
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{
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DEBUG "***";
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# DEBUG "*** $type\[" . join(',', map { "$_=$job_opts->{$_}" } keys(%$job_opts)) . "]";
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DEBUG "*** $target_type";
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DEBUG "*** source: $sroot/$svol";
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DEBUG "*** dest : $droot/";
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DEBUG "***";
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INFO "Creating subvolume backup ($target_type) for: $sroot/$svol";
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my $changelog = "";
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if ($job_opts->{log}) {
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# log defaults to sidecar of destination snapshot
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$changelog = $job_opts->{logfile} || "$droot/$snapshot_name.btrbk.log";
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}
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if ($job_opts->{incremental}) {
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INFO "Using previously created snapshot: $snapshot";
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# INFO "Attempting incremantal backup (option=incremental)";
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my ($latest_common_src, $latest_common_dst) = get_latest_common($sroot, $svol, $droot);
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if ($latest_common_src && $latest_common_dst) {
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my $parent_snap = $latest_common_src->{FS_PATH};
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INFO "Using parent snapshot: $parent_snap";
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btrfs_send_receive($snapshot, $droot, $parent_snap, $changelog);
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} elsif ($job_opts->{init}) {
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INFO "No common parent snapshots found, creating initial backup (option=init)";
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btrfs_send_receive($snapshot, $droot, undef, $changelog);
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} else {
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WARN "Backup to $droot failed: no common parent subvolume found, and job option \"create\" is not set";
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my $receive_log = config_key($config_target, "receive_log");
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if($receive_log)
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{
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if(lc($receive_log) eq "sidecar" ) {
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# log defaults to sidecar of destination snapshot
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$receive_log = "$droot/$snapshot_name.btrbk.log";
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}
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else {
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$receive_log =~ s/\/+$//; # remove trailing slash
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$receive_log =~ s/^\/+/\//; # sanitize leading slash
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unless($receive_log =~ /^\//) {
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WARN "Receive logfile is not absolute, ignoring: $receive_log";
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$receive_log = undef;
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}
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}
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}
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if(config_key($config_target, "incremental"))
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{
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INFO "Using previously created snapshot: $snapshot";
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my ($latest_common_src, $latest_common_dst) = get_latest_common($sroot, $svol, $droot);
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if($latest_common_src && $latest_common_dst) {
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my $parent_snap = $latest_common_src->{FS_PATH};
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INFO "Using parent snapshot: $parent_snap";
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btrfs_send_receive($snapshot, $droot, $parent_snap, $receive_log);
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} elsif (lc(config_key($config_target, "incremental")) ne "strict") {
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INFO "No common parent subvolume present, creating initial full backup";
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btrfs_send_receive($snapshot, $droot, undef, $receive_log);
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} else {
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WARN "Backup to $droot failed: no common parent subvolume found, and option \"incremental\" is set to \"strict\"";
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}
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} else {
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INFO "Creating full backup (option \"incremental\" is not set)";
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btrfs_send_receive($snapshot, $droot, undef, $receive_log);
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}
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}
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else {
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ERROR "Unknown target type \"$target_type\", skipping: $sroot/$svol";
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}
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}
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} elsif ($job_opts->{create}) {
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INFO "Creating new snapshot copy (option=create))";
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btrfs_send_receive($snapshot, $droot, undef, $changelog);
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}
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}
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}
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@ -24,7 +24,6 @@ snapshot_create_always yes
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# TODO: incremental = {yes|no|strict}
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incremental strict
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init yes
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snapshot_preserve_days 14
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snapshot_preserve_weekly 0
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@ -37,7 +36,7 @@ volume /mnt/btr_system
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subvolume root_gentoo
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target send-receive /mnt/btr_ext/_btrbk
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target send-receive /mnt/btr_backup/_btrbk
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log sidecar
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receive_log sidecar
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subvolume kvm
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target_preserve_days 7
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@ -47,7 +46,7 @@ volume /mnt/btr_system
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target_preserve_weekly 0
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target send-receive /mnt/btr_backup/_btrbk
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log sidecar
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receive_log sidecar
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volume /mnt/btr_data
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