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btrbk: code cleanup (remove unneeded code, rename vars)

pull/88/head
Axel Burri 2016-05-03 13:19:42 +02:00
parent 12d435d42a
commit 54b5368309
1 changed files with 11 additions and 36 deletions
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@ -46,13 +46,13 @@ use Carp qw(confess);
use Getopt::Long qw(GetOptions);
use Time::Local qw( timelocal timegm timegm_nocheck );
our $VERSION = "0.23.1-dev";
our $VERSION = '0.23.1-dev';
our $AUTHOR = 'Axel Burri <axel@tty0.ch>';
our $PROJECT_HOME = '<http://digint.ch/btrbk/>';
our $BTRFS_PROGS_MIN = "3.18.2"; # required since btrbk-v0.23.0
our $BTRFS_PROGS_MIN = '3.18.2'; # required since btrbk-v0.23.0
my $VERSION_INFO = "btrbk command line client, version $VERSION";
my $VERSION_INFO = "btrbk command line client, version $VERSION";
my @config_src = ("/etc/btrbk.conf", "/etc/btrbk/btrbk.conf");
@ -2043,13 +2043,13 @@ sub get_latest_common($$$;$)
die "multiple parents for $svol->{node}{parent_uuid}" if(scalar(@candidate) > 1);
TRACE "get_latest_common: subvolume has a read-only parent, add parent candidate" if(scalar(@candidate) > 0);
# add snapshots with same parent_uuid
my @brothers = grep { $_->{node}{readonly} && ($_->{node}{parent_uuid} eq $svol->{node}{parent_uuid}) } @$sroot_subvol_list;
my @brothers_older = grep { $_->{node}{cgen} <= $svol->{node}{cgen} } @brothers;
my @brothers_newer = grep { $_->{node}{cgen} > $svol->{node}{cgen} } @brothers;
push @candidate, sort { $b->{node}{cgen} <=> $a->{node}{cgen} } @brothers_older; # older first, descending by cgen
push @candidate, sort { $a->{node}{cgen} <=> $b->{node}{cgen} } @brothers_newer; # then newer, ascending by cgen
TRACE "get_latest_common: subvolume has brothers (same parent_uuid), add " . scalar(@brothers_older) . " older and " . scalar(@brothers_newer) . " newer (by cgen) candidates";
# add snapshots with same parent_uuid (siblings)
my @siblings = grep { $_->{node}{readonly} && ($_->{node}{parent_uuid} eq $svol->{node}{parent_uuid}) } @$sroot_subvol_list;
my @siblings_older = grep { $_->{node}{cgen} <= $svol->{node}{cgen} } @siblings;
my @siblings_newer = grep { $_->{node}{cgen} > $svol->{node}{cgen} } @siblings;
push @candidate, sort { $b->{node}{cgen} <=> $a->{node}{cgen} } @siblings_older; # older first, descending by cgen
push @candidate, sort { $a->{node}{cgen} <=> $b->{node}{cgen} } @siblings_newer; # then newer, ascending by cgen
TRACE "get_latest_common: subvolume has siblings (same parent_uuid), add " . scalar(@siblings_older) . " older and " . scalar(@siblings_newer) . " newer (by cgen) candidates";
}
if(defined($snapshot_dir) && exists($svol->{node}{BTRBK_BASENAME})) {
@ -2511,16 +2511,6 @@ sub _config_propagate_target
}
my %copy = ( %$target, PARENT => $subsection );
# foreach my $key (keys %copy) {
# # config keys which are strongly related to target section are
# # superseded by their presence in later defined sections.
# next unless($key =~ /^target_/);
# next if($key eq "target_type"); # not really necessary, but make sure the target_type is not deleted
# if(exists($subsection->{$key})) {
# TRACE "delete superseded config option from target: $key=" . ($copy{$key} // "<undef>");
# delete $copy{$key};
# }
# }
push @propagate_target, \%copy;
}
$subsection->{TARGET} //= [];
@ -3562,23 +3552,8 @@ MAIN:
exit 1;
}
my $lastgen;
# check if given src and target share same parent
if($src_vol->{node}{parent_uuid} eq $target_vol->{node}{uuid}) {
DEBUG "target subvolume is direct parent of source subvolume";
}
elsif($src_vol->{node}{parent_uuid} eq $target_vol->{node}{parent_uuid}) {
DEBUG "target subvolume and source subvolume share same parent";
}
else {
# TODO: this rule only applies to snapshots. find a way to distinguish snapshots from received backups
# ERROR "Subvolumes \"$target_url\" and \"$src_url\" do not share the same parents";
# exit 1;
}
# NOTE: in some cases "cgen" differs from "gen", even for read-only snapshots (observed: gen=cgen+1)
$lastgen = $src_vol->{node}{gen} + 1;
my $lastgen = $src_vol->{node}{gen} + 1;
# dump files, sorted and unique
my $ret = btrfs_subvolume_find_new($target_vol, $lastgen);