[thin_check] factor out check_space_map_counts()
This commit is contained in:
Joe Thornber
parent
a934ee69c4
commit
270c0f7041
@ -41,8 +41,6 @@ using namespace thin_provisioning;
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//----------------------------------------------------------------
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namespace {
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//--------------------------------
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block_manager<>::ptr
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open_bm(string const &path) {
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block_address nr_blocks = get_nr_blocks(path);
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@ -73,7 +71,7 @@ namespace {
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nested_output::nest _ = out_.push();
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out_ << d.desc_ << end_message();
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}
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err_ = combine_errors(err_, FATAL);
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err_ << FATAL;
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}
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base::error_state get_error() const {
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@ -101,7 +99,7 @@ namespace {
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out_ << d.desc_ << end_message();
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}
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err_ = combine_errors(err_, FATAL);
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err_ << FATAL;
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}
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error_state get_error() const {
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@ -128,7 +126,7 @@ namespace {
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nested_output::nest _ = out_.push();
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out_ << d.desc_ << end_message();
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}
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err_ = combine_errors(err_, FATAL);
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err_ << FATAL;
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}
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virtual void visit(mapping_tree_detail::missing_mappings const &d) {
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@ -137,7 +135,7 @@ namespace {
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nested_output::nest _ = out_.push();
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out_ << d.desc_ << end_message();
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}
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err_ = combine_errors(err_, FATAL);
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err_ << FATAL;
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}
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error_state get_error() const {
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@ -171,6 +169,77 @@ namespace {
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bool clear_needs_check_flag_on_success;
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};
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error_state check_space_map_counts(flags const &fs, nested_output &out,
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superblock_detail::superblock &sb,
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block_manager<>::ptr bm,
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transaction_manager::ptr tm) {
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block_counter bc;
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// Count the superblock
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bc.inc(superblock_detail::SUPERBLOCK_LOCATION);
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// Count the metadata snap, if present
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if (sb.metadata_snap_ != superblock_detail::SUPERBLOCK_LOCATION) {
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bc.inc(sb.metadata_snap_);
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superblock_detail::superblock snap = read_superblock(bm, sb.metadata_snap_);
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bc.inc(snap.data_mapping_root_);
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bc.inc(snap.device_details_root_);
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}
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// Count the device tree
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{
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noop_value_counter<device_tree_detail::device_details> vc;
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device_tree dtree(*tm, sb.device_details_root_,
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device_tree_detail::device_details_traits::ref_counter());
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count_btree_blocks(dtree, bc, vc);
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}
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// Count the mapping tree
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{
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noop_value_counter<mapping_tree_detail::block_time> vc;
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mapping_tree mtree(*tm, sb.data_mapping_root_,
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mapping_tree_detail::block_traits::ref_counter(tm->get_sm()));
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count_btree_blocks(mtree, bc, vc);
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}
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// Count the metadata space map
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{
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persistent_space_map::ptr metadata_sm =
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open_metadata_sm(*tm, static_cast<void *>(&sb.metadata_space_map_root_));
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metadata_sm->count_metadata(bc);
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}
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// Count the data space map
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{
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persistent_space_map::ptr data_sm =
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open_disk_sm(*tm, static_cast<void *>(&sb.data_space_map_root_));
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data_sm->count_metadata(bc);
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}
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// Finally we need to check the metadata space map agrees
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// with the counts we've just calculated.
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error_state err = NO_ERROR;
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nested_output::nest _ = out.push();
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persistent_space_map::ptr metadata_sm =
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open_metadata_sm(*tm, static_cast<void *>(&sb.metadata_space_map_root_));
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for (unsigned b = 0; b < metadata_sm->get_nr_blocks(); b++) {
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ref_t c_actual = metadata_sm->get_count(b);
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ref_t c_expected = bc.get_count(b);
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if (c_actual != c_expected) {
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out << "metadata reference counts differ for block " << b
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<< ", expected " << c_expected
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<< ", but got " << c_actual
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<< end_message();
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err << (c_actual > c_expected ? NON_FATAL : FATAL);
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}
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}
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return err;
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}
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error_state metadata_check(string const &path, flags fs) {
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block_manager<>::ptr bm = open_bm(path);
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@ -223,85 +292,17 @@ namespace {
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}
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}
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error_state mplus_err = combine_errors(sb_rep.get_error(),
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combine_errors(mapping_rep.get_error(),
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dev_rep.get_error()));
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error_state err = NO_ERROR;
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err << sb_rep.get_error() << mapping_rep.get_error() << dev_rep.get_error();
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// if we're checking everything, and there were no errors,
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// then we should check the space maps too.
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if (fs.check_device_tree && fs.check_mapping_tree_level2 && mplus_err == NO_ERROR) {
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if (fs.check_device_tree && fs.check_mapping_tree_level2 && err != FATAL) {
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out << "checking space map counts" << end_message();
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{
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nested_output::nest _ = out.push();
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block_counter bc;
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// Count the superblock
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bc.inc(superblock_detail::SUPERBLOCK_LOCATION);
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// Count the metadata snap, if present
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if (sb.metadata_snap_ != superblock_detail::SUPERBLOCK_LOCATION) {
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bc.inc(sb.metadata_snap_);
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superblock_detail::superblock snap = read_superblock(bm, sb.metadata_snap_);
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bc.inc(snap.data_mapping_root_);
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bc.inc(snap.device_details_root_);
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}
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// Count the device tree
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{
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noop_value_counter<device_tree_detail::device_details> vc;
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device_tree dtree(*tm, sb.device_details_root_,
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device_tree_detail::device_details_traits::ref_counter());
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count_btree_blocks(dtree, bc, vc);
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}
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// Count the mapping tree
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{
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noop_value_counter<mapping_tree_detail::block_time> vc;
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mapping_tree mtree(*tm, sb.data_mapping_root_,
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mapping_tree_detail::block_traits::ref_counter(tm->get_sm()));
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count_btree_blocks(mtree, bc, vc);
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}
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// Count the metadata space map
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{
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persistent_space_map::ptr metadata_sm =
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open_metadata_sm(*tm, static_cast<void *>(&sb.metadata_space_map_root_));
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metadata_sm->count_metadata(bc);
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}
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// Count the data space map
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{
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persistent_space_map::ptr data_sm =
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open_disk_sm(*tm, static_cast<void *>(&sb.data_space_map_root_));
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data_sm->count_metadata(bc);
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}
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// Finally we need to check the metadata
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// space map agrees with the counts we've
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// just calculated.
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{
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persistent_space_map::ptr metadata_sm =
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open_metadata_sm(*tm, static_cast<void *>(&sb.metadata_space_map_root_));
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for (unsigned b = 0; b < metadata_sm->get_nr_blocks(); b++) {
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ref_t c_actual = metadata_sm->get_count(b);
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ref_t c_expected = bc.get_count(b);
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if (c_actual != c_expected) {
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out << "metadata reference counts differ for block " << b
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<< ", expected " << c_expected
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<< ", but got " << c_actual
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<< end_message();
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mplus_err = combine_errors(mplus_err,
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c_actual > c_expected ? NON_FATAL : FATAL);
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}
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}
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}
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}
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err << check_space_map_counts(fs, out, sb, bm, tm);
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}
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return mplus_err;
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return err;
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}
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void clear_needs_check(string const &path) {
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