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btrbk: moved get_receive_targets_fsroot() out of get_receive_targets(), while cleaning up

pull/88/head
Axel Burri 2016-04-16 16:05:57 +02:00
parent 774e6ef842
commit 5a06a85619
1 changed files with 70 additions and 51 deletions
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@ -1835,28 +1835,24 @@ sub get_receive_targets($$;@)
my $src_vol = shift || die;
my %opts = @_;
my $droot_subvols = vinfo_subvol_list($droot);
my @ret_receive_targets;
my @all_receive_targets;
my @ret;
my $unexpected_count = 0;
if($src_vol->{node}{is_root}) {
DEBUG "Skip search for targets: source subvolume is btrfs root: $src_vol->{PRINT}";
return @ret_receive_targets;
return @ret;
}
unless($src_vol->{node}{readonly}) {
DEBUG "Skip search for targets: source subvolume is not read-only: $src_vol->{PRINT}";
return @ret_receive_targets;
return @ret;
}
# find matches by comparing uuid / received_uuid
my $uuid = $src_vol->{node}{uuid};
my $received_uuid;
if($src_vol->{node}{received_uuid} ne '-') {
TRACE "get_receive_targets: source subvolume has received_uuid";
$received_uuid = $src_vol->{node}{received_uuid};
}
my $received_uuid = $src_vol->{node}{received_uuid};
$received_uuid = undef if($received_uuid eq '-');
TRACE "get_receive_targets: src_vol=\"$src_vol->{PRINT}\", droot=\"$droot->{PRINT}\"";
die("subvolume info not present: $uuid") unless($uuid_cache{$uuid});
foreach (@$droot_subvols) {
next unless($_->{node}{readonly});
my $matched = undef;
@ -1866,43 +1862,64 @@ sub get_receive_targets($$;@)
elsif(defined($received_uuid) && ($_->{node}{received_uuid} eq $received_uuid)) {
$matched = 'by-received_uuid';
}
if($matched) {
push(@all_receive_targets, $_);
if($opts{exact_match} && (not exists($_->{BTRBK_RAW}))) {
unless($_->{direct_leaf} && ($_->{NAME} eq $src_vol->{NAME})) {
TRACE "get_receive_targets: $matched: skip non-exact match: $_->{PRINT}";
WARN "Receive target of \"$src_vol->{PRINT}\" exists at unexpected location: $_->{PRINT}" if($opts{warn_unexpected});
$unexpected_count++;
next;
}
}
TRACE "get_receive_targets: $matched: Found receive target: $_->{SUBVOL_PATH}";
push(@ret_receive_targets, $_);
}
next unless($matched);
if($opts{warn_unexpected}) {
# search in filesystem for matching received_uuid
my @fs_match = grep({ (not $_->{is_root}) &&
(($_->{received_uuid} eq $uuid) ||
(defined($received_uuid) && ($_->{received_uuid} eq $received_uuid)))
} values(%{$droot->{node}{TREE_ROOT}{ID_HASH}}) );
foreach my $node (@fs_match) {
next if(scalar grep( { $_->{node}{id} == $node->{id} } @all_receive_targets));
my $text;
my @url = get_cached_url_by_uuid($node->{uuid});
if(scalar(@url)) {
$text = vinfo($url[0])->{PRINT};
} else {
$text = '"' . _fs_path($node) . "\" (in filesystem at \"$droot->{PRINT}\")";
}
WARN "Receive target of \"$src_vol->{PRINT}\" exists at unexpected location: $text";
$unexpected_count++;
TRACE "get_receive_targets: $matched: Found receive target: $_->{SUBVOL_PATH}";
push(@{$opts{seen}}, $_) if($opts{seen});
if($opts{exact_match} && !exists($_->{BTRBK_RAW})) {
if($_->{direct_leaf} && ($_->{NAME} eq $src_vol->{NAME})) {
TRACE "get_receive_targets: exact_match: $_->{SUBVOL_PATH}";
}
else {
TRACE "get_receive_targets: $matched: skip non-exact match: $_->{PRINT}";
WARN "Receive target of \"$src_vol->{PRINT}\" exists at unexpected location: $_->{PRINT}" if($opts{warn});
next;
}
}
${$opts{ret_unexpected}} = $unexpected_count if(ref $opts{ret_unexpected});
push(@ret, $_);
}
DEBUG "Found " . scalar(@ret_receive_targets) . " receive targets in \"$droot->{PRINT}/\" for: $src_vol->{PRINT}";
return @ret_receive_targets;
DEBUG "Found " . scalar(@ret) . " receive targets in \"$droot->{PRINT}/\" for: $src_vol->{PRINT}";
return @ret;
}
sub get_receive_targets_fsroot($$@)
{
my $droot = shift // die;
my $src_vol = shift // die;
my %opts = @_;
my $id = $src_vol->{node}{id};
my $uuid = $src_vol->{node}{uuid};
my $received_uuid = $src_vol->{node}{received_uuid};
$received_uuid = undef if(defined($received_uuid) && ($received_uuid eq '-'));
my @unexpected;
my @exclude;
@exclude = map { $_->{node}{id} } @{$opts{exclude}} if($opts{exclude});
TRACE "get_receive_target_fsroot: uuid=$uuid, received_uuid=" . ($received_uuid // '-') . " exclude id={ " . join(', ', @exclude) . " }";
# search in filesystem for matching received_uuid
foreach my $node (
grep({ (not $_->{is_root}) &&
(($_->{received_uuid} eq $uuid) ||
(defined($received_uuid) && ($_->{received_uuid} eq $received_uuid)))
} values(%{$droot->{node}{TREE_ROOT}{ID_HASH}}) ) )
{
next if(scalar grep($_ == $node->{id}, @exclude));
push @unexpected, $node;
if($opts{warn}) {
my $text;
my @url = get_cached_url_by_uuid($node->{uuid});
if(scalar(@url)) {
$text = vinfo($url[0])->{PRINT};
} else {
$text = '"' . _fs_path($node) . "\" (in filesystem at \"$droot->{PRINT}\")";
}
WARN "Receive target of \"$src_vol->{PRINT}\" exists at unexpected location: $text";
}
}
return \@unexpected;
}
@ -2643,18 +2660,17 @@ sub macro_archive_target($$$;$)
my @schedule;
# NOTE: this is pretty much the same as "resume missing"
my $abort_unexpected_location = 0;
my @unexpected_location;
foreach my $svol (@{vinfo_subvol_list($sroot, sort => 'path')})
{
next unless($svol->{node}{readonly});
next unless($svol->{btrbk_direct_leaf} && ($svol->{BTRBK_BASENAME} eq $snapshot_name));
my $unexpected_count = 0;
my @receive_targets = get_receive_targets($droot, $svol, exact_match => 1, warn_unexpected => 1, ret_unexpected => \$unexpected_count);
# don't abort right here, we want to warn about all unexpected targets
$abort_unexpected_location += $unexpected_count;
next if(scalar(@receive_targets));
my $warning_seen = [];
my @receive_targets = get_receive_targets($droot, $svol, exact_match => 1, warn => 1, seen => $warning_seen );
push @unexpected_location, get_receive_targets_fsroot($droot, $svol, exclude => $warning_seen, warn => 1); # warn if unexpected on fs
next if(scalar(@receive_targets));
DEBUG "Adding archive candidate: $svol->{PRINT}";
push @schedule, { value => $svol,
@ -2664,7 +2680,7 @@ sub macro_archive_target($$$;$)
}
# this is a bit harsh, disabled for now
# if($abort_unexpected_location) {
# if(scalar(@unexpected_location) {
# ABORTED($droot, "Receive targets of archive candidates exist at unexpected location");
# WARN "Skipping archiving of \"$sroot->{PRINT}/${snapshot_name}.*\": $abrt";
# return undef;
@ -4498,7 +4514,10 @@ MAIN:
foreach my $child (@snapshot_children)
{
next if(scalar(get_receive_targets($droot, $child, exact_match => 1, warn_unexpected => 1)));
my $warning_seen = [];
my @receive_targets = get_receive_targets($droot, $child, exact_match => 1, warn => 1, seen => $warning_seen );
get_receive_targets_fsroot($droot, $child, exclude => $warning_seen, warn => 1); # warn on unexpected on fs
next if(scalar(@receive_targets));
if(my $err_vol = vinfo_subvol($droot, $child->{NAME})) {
WARN "Target subvolume \"$err_vol->{PRINT}\" exists, but is not a receive target of \"$child->{PRINT}\"";