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Merge pull request #150 from mingnus/thin-check-fix-metadata-leaks 

Add space-map counting tests
This commit is contained in:
Joe Thornber 2020-08-18 08:50:32 +01:00 committed by GitHub
parent 7466cd7182 44d025be0c
commit 65799f9a14
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 358 additions and 10 deletions
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9
persistent-data/block_counter.h
View File

@ -62,6 +62,10 @@ namespace persistent_data {
return stop_on_error_;
}
virtual void clear() {
counts_.clear();
}
private:
count_map counts_;
bool stop_on_error_;
@ -86,6 +90,11 @@ namespace persistent_data {
base::run_set<block_address> const& get_visited() const {
return visited_;
}
virtual void clear() {
visited_.clear();
}
private:
base::run_set<block_address> visited_;
};

11
persistent-data/space-maps/disk.cc
View File

@ -666,9 +666,14 @@ namespace {
if (!ie.blocknr_)
return;
block_manager::read_ref rr = tm_.read_lock(ie.blocknr_, bitmap_validator_);
if (rr.data())
bc_.inc(ie.blocknr_);
try {
block_manager::read_ref rr = tm_.read_lock(ie.blocknr_, bitmap_validator_);
if (rr.data())
bc_.inc(ie.blocknr_);
} catch (std::exception &e) {
if (bc_.stop_on_error())
throw;
}
}
private:

7
persistent-data/transaction_manager.cc
View File

@ -37,6 +37,13 @@ transaction_manager::~transaction_manager()
{
}
void
transaction_manager::commit()
{
wipe_shadow_table();
bm_->flush();
}
transaction_manager::write_ref
transaction_manager::begin(block_address superblock, validator v)
{

2
persistent-data/transaction_manager.h
View File

@ -42,6 +42,8 @@ namespace persistent_data {
space_map::ptr sm);
~transaction_manager();
void commit();
// Drop the superblock reference to commit
write_ref begin(block_address superblock, validator v);
write_ref new_block(validator v);

6
thin-provisioning/metadata_checker.cc
View File

@ -603,8 +603,9 @@ void check_options::set_ignore_non_fatal() {
ignore_non_fatal_ = true;
}
void check_options::set_fix_metadata_leaks() {
void check_options::set_auto_repair() {
fix_metadata_leaks_ = true;
clear_needs_check_ = true;
}
void check_options::set_clear_needs_check() {
@ -650,8 +651,7 @@ thin_provisioning::check_metadata(std::string const &path,
checker.check();
if (check_opts.fix_metadata_leaks_)
checker.fix_metadata_leaks(check_opts.open_transaction_);
if (check_opts.fix_metadata_leaks_ ||
check_opts.clear_needs_check_)
if (check_opts.clear_needs_check_)
checker.clear_needs_check_flag();
return checker.get_status();

2
thin-provisioning/metadata_checker.h
View File

@ -45,7 +45,7 @@ namespace thin_provisioning {
void set_override_mapping_root(bcache::block_address b);
void set_metadata_snap();
void set_ignore_non_fatal();
void set_fix_metadata_leaks();
void set_auto_repair();
void set_clear_needs_check();
bool use_metadata_snap_;

2
thin-provisioning/thin_check.cc
View File

@ -166,7 +166,7 @@ thin_check_cmd::run(int argc, char **argv)
case 6:
// auto-repair
fs.check_opts.set_fix_metadata_leaks();
fs.check_opts.set_auto_repair();
break;
default:

329
unit-tests/space_map_t.cc
View File

@ -17,6 +17,8 @@
// <http://www.gnu.org/licenses/>.
#include "gmock/gmock.h"
#include "persistent-data/data-structures/btree_counter.h"
#include "persistent-data/data-structures/simple_traits.h"
#include "persistent-data/space-maps/disk.h"
#include "persistent-data/space-maps/core.h"
#include "persistent-data/space-maps/careful_alloc.h"
@ -34,6 +36,8 @@ namespace {
unsigned const ENTRIES_PER_BLOCK = (MD_BLOCK_SIZE - sizeof(sm_disk_detail::bitmap_header)) * 4;
unsigned const NR_BITMAPS = 2;
unsigned const NR_BLOCKS = ENTRIES_PER_BLOCK * NR_BITMAPS;
unsigned const NR_DATA_BITMAPS = 4;
unsigned const NR_DATA_BLOCKS = ENTRIES_PER_BLOCK * NR_DATA_BITMAPS;
block_address const SUPERBLOCK = 0;
unsigned const MAX_LOCKS = 8;
@ -245,6 +249,8 @@ namespace {
public:
MetadataSpaceMapTests() {
memset(metadata_sm_root_, 0, sizeof(metadata_sm_root_));
memset(data_sm_root_, 0, sizeof(data_sm_root_));
create_metadata_sm(NR_BLOCKS);
}
@ -253,6 +259,13 @@ namespace {
ASSERT_THAT(metadata_sm_->root_size(), Le(sizeof(metadata_sm_root_)));
metadata_sm_->copy_root(metadata_sm_root_, sizeof(metadata_sm_root_));
if (!!data_sm_)
data_sm_->copy_root(data_sm_root_, sizeof(data_sm_root_));
else
memset(data_sm_root_, 0, sizeof(data_sm_root_));
tm_->commit();
}
void open() {
@ -260,6 +273,8 @@ namespace {
space_map::ptr core_sm{create_core_map(NR_BLOCKS)};
tm_ = transaction_manager::ptr(new transaction_manager(bm_, core_sm));
metadata_sm_ = persistent_data::open_metadata_sm(*tm_, metadata_sm_root_);
if (*(uint64_t*)data_sm_root_)
data_sm_ = persistent_data::open_disk_sm(*tm_, data_sm_root_);
tm_->set_sm(metadata_sm_);
}
@ -291,6 +306,12 @@ namespace {
sm_disk_detail::sm_root_traits::unpack(d, v);
}
void get_data_sm_root(sm_disk_detail::sm_root &v) const {
sm_disk_detail::sm_root_disk d;
data_sm_->copy_root(&d, sizeof(d));
sm_disk_detail::sm_root_traits::unpack(d, v);
}
void mark_shadowed() {
block_counter bc(true);
metadata_sm_->count_metadata(bc);
@ -305,7 +326,7 @@ namespace {
checked_space_map::ptr metadata_sm_;
checked_space_map::ptr data_sm_;
private:
protected:
void create_metadata_sm(block_address nr_blocks) {
bm_ = test::create_bm(NR_BLOCKS);
space_map::ptr core_sm{create_core_map(nr_blocks)};
@ -327,6 +348,210 @@ namespace {
transaction_manager::ptr tm_;
unsigned char metadata_sm_root_[128];
unsigned char data_sm_root_[128];
};
//--------------------------------
class MetaSMCountingTests : public MetadataSpaceMapTests {
public:
MetaSMCountingTests() {
populate_ref_counts();
commit();
block_counter bc(true);
metadata_sm_->count_metadata(bc);
sm_total_blocks_ = bc.get_counts().size();
}
void trash_bitmap_root() {
sm_disk_detail::sm_root root;
get_root(root);
test::zero_block(bm_, root.bitmap_root_);
}
// TODO: trash the bitmap corresponding to a given key
void trash_bitmap_block(unsigned index) {
std::vector<sm_disk_detail::index_entry> entries;
load_ies(entries);
ASSERT_LT(index, entries.size());
test::zero_block(bm_, entries[index].blocknr_);
}
void trash_ref_count_root() {
sm_disk_detail::sm_root root;
get_root(root);
test::zero_block(bm_, root.ref_count_root_);
}
// TODO: trash the node corresponding to a given key
void trash_ref_count_node() {
count_ref_count_blocks();
sm_disk_detail::sm_root root;
get_root(root);
ref_count_blocks_.erase(root.ref_count_root_);
ASSERT_GT(ref_count_blocks_.size(), 0u);
test::zero_block(bm_, *ref_count_blocks_.begin());
}
std::set<block_address> ref_count_blocks_;
size_t sm_total_blocks_;
private:
void populate_ref_counts() {
while (true) {
space_map::maybe_block b = metadata_sm_->new_block();
if (!b)
break;
// FIXME: the statement might throw if there's
// no free block for ref-count tree
metadata_sm_->set_count(*b, 3);
}
}
void count_ref_count_blocks() {
sm_disk_detail::sm_root root;
get_root(root);
block_counter bc(true);
btree<1, uint32_traits> ref_counts(*tm_,
root.ref_count_root_,
uint32_traits::ref_counter());
persistent_data::noop_value_counter<uint32_t> vc;
count_btree_blocks(ref_counts, bc, vc);
block_counter::count_map const &m = bc.get_counts();
for (auto const &c : m)
ref_count_blocks_.insert(c.first);
}
};
class DataSMCountingTests : public MetadataSpaceMapTests {
public:
DataSMCountingTests() {
create_data_sm(NR_DATA_BLOCKS);
populate_ref_counts();
commit();
count_index_store_blocks();
count_ref_count_blocks();
collect_bitmaps();
sm_total_blocks_ = nr_index_store_blocks_
+ nr_ref_count_blocks_
+ NR_DATA_BITMAPS;
}
void trash_bitmap_root() {
sm_disk_detail::sm_root root;
get_data_sm_root(root);
test::zero_block(bm_, root.bitmap_root_);
}
// TODO: trash the bitmap corresponding to a given key
void trash_bitmap_block() {
test::zero_block(bm_, *bitmap_blocks_.begin());
}
void trash_ref_count_root() {
sm_disk_detail::sm_root root;
get_data_sm_root(root);
test::zero_block(bm_, root.ref_count_root_);
}
// TODO: trash the node corresponding to a given key
void trash_ref_count_node() {
sm_disk_detail::sm_root root;
get_data_sm_root(root);
ref_count_blocks_.erase(root.ref_count_root_);
ASSERT_GT(ref_count_blocks_.size(), 0u);
test::zero_block(bm_, *ref_count_blocks_.begin());
}
std::set<block_address> index_store_blocks_;
std::set<block_address> bitmap_blocks_;
std::set<block_address> ref_count_blocks_;
size_t sm_total_blocks_;
size_t nr_index_store_blocks_;
size_t nr_ref_count_blocks_;
private:
void populate_ref_counts() {
while (true) {
space_map::maybe_block b = data_sm_->new_block();
if (!b)
break;
// FIXME: the statement might throw if there's
// no free block for ref-count tree
data_sm_->set_count(*b, 3);
}
}
// nodes for index_store, except bitmaps
void count_index_store_blocks() {
sm_disk_detail::sm_root root;
get_data_sm_root(root);
block_counter bc(true);
btree<1, sm_disk_detail::index_entry_traits> index_store(*tm_,
root.bitmap_root_,
sm_disk_detail::index_entry_traits::ref_counter());
persistent_data::noop_value_counter<sm_disk_detail::index_entry> vc;
count_btree_blocks(index_store, bc, vc);
block_counter::count_map const &m = bc.get_counts();
for (auto const &c : m)
index_store_blocks_.insert(c.first);
nr_index_store_blocks_ = index_store_blocks_.size();
}
void count_ref_count_blocks() {
sm_disk_detail::sm_root root;
get_data_sm_root(root);
block_counter bc(true);
btree<1, uint32_traits> ref_counts(*tm_,
root.ref_count_root_,
uint32_traits::ref_counter());
persistent_data::noop_value_counter<uint32_t> vc;
count_btree_blocks(ref_counts, bc, vc);
block_counter::count_map const &m = bc.get_counts();
for (auto const &c : m)
ref_count_blocks_.insert(c.first);
nr_ref_count_blocks_ = ref_count_blocks_.size();
}
void collect_bitmaps() {
block_counter bc(true);
data_sm_->count_metadata(bc);
block_counter::count_map const &m = bc.get_counts();
for (auto const &c : m)
bitmap_blocks_.insert(c.first);
for (auto const &b : index_store_blocks_)
bitmap_blocks_.erase(b);
for (auto const &b : ref_count_blocks_)
bitmap_blocks_.erase(b);
size_t total = m.size();
ASSERT_EQ(bitmap_blocks_.size(), NR_DATA_BITMAPS);
ASSERT_EQ(total, nr_index_store_blocks_
+ nr_ref_count_blocks_
+ NR_DATA_BITMAPS);
}
};
}
@ -363,7 +588,7 @@ TEST_F(SpaceMapTests, test_sm_metadata)
TEST_F(MetadataSpaceMapTests, test_metadata_and_disk)
{
create_data_sm(NR_BLOCKS * 2);
create_data_sm(NR_DATA_BLOCKS);
}
// Test whether sm_recursive protected allocated blocks in a recursion
@ -513,3 +738,103 @@ TEST_F(MetadataSpaceMapTests, test_intended_in_place_modification)
}
//----------------------------------------------------------------
TEST_F(MetaSMCountingTests, test_trashed_bitmap_root)
{
sm_disk_detail::sm_root_disk d;
metadata_sm_->copy_root(&d, sizeof(d));
trash_bitmap_root();
// explicitly test open_metadata_sm()
block_manager::ptr bm(new block_manager("./test.data", NR_BLOCKS, MAX_LOCKS, block_manager::READ_WRITE));
space_map::ptr core_sm{create_core_map(NR_BLOCKS)};
transaction_manager::ptr tm(new transaction_manager(bm_, core_sm));
ASSERT_THROW(persistent_data::open_metadata_sm(*tm, &d), runtime_error);
}
TEST_F(MetaSMCountingTests, test_trashed_bitmap_block)
{
trash_bitmap_block(1);
block_counter bc_ignore_errors;
ASSERT_NO_THROW(metadata_sm_->count_metadata(bc_ignore_errors));
ASSERT_EQ(bc_ignore_errors.get_counts().size(), sm_total_blocks_ - 1u);
block_counter bc_stop_on_error(true);
ASSERT_THROW(metadata_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
TEST_F(MetaSMCountingTests, test_trashed_ref_count_root)
{
trash_ref_count_root();
block_counter bc_ignore_errors;
ASSERT_NO_THROW(metadata_sm_->count_metadata(bc_ignore_errors));
ASSERT_EQ(bc_ignore_errors.get_counts().size(), 1u + NR_BITMAPS);
block_counter bc_stop_on_error(true);
ASSERT_THROW(metadata_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
TEST_F(MetaSMCountingTests, test_trashed_ref_count_node)
{
trash_ref_count_node();
block_counter bc_ignore_errors;
ASSERT_NO_THROW(metadata_sm_->count_metadata(bc_ignore_errors));
block_counter bc_stop_on_error(true);
ASSERT_THROW(metadata_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
//----------------------------------------------------------------
TEST_F(DataSMCountingTests, test_trashed_bitmap_root)
{
trash_bitmap_root();
block_counter bc_ignore_errors;
ASSERT_NO_THROW(data_sm_->count_metadata(bc_ignore_errors));
ASSERT_EQ(bc_ignore_errors.get_counts().size(), nr_ref_count_blocks_);
block_counter bc_stop_on_error(true);
ASSERT_THROW(data_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
TEST_F(DataSMCountingTests, test_trashed_bitmap_block)
{
trash_bitmap_block();
block_counter bc_ignore_errors;
ASSERT_NO_THROW(data_sm_->count_metadata(bc_ignore_errors));
ASSERT_EQ(bc_ignore_errors.get_counts().size(), sm_total_blocks_ - 1u);
block_counter bc_stop_on_error(true);
ASSERT_THROW(data_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
TEST_F(DataSMCountingTests, test_trashed_ref_count_root)
{
trash_ref_count_root();
block_counter bc_ignore_errors;
ASSERT_NO_THROW(data_sm_->count_metadata(bc_ignore_errors));
ASSERT_EQ(bc_ignore_errors.get_counts().size(), nr_index_store_blocks_ + NR_DATA_BITMAPS);
block_counter bc_stop_on_error(true);
ASSERT_THROW(data_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
TEST_F(DataSMCountingTests, test_trashed_ref_count_node)
{
trash_ref_count_node();
block_counter bc_ignore_errors;
ASSERT_NO_THROW(data_sm_->count_metadata(bc_ignore_errors));
block_counter bc_stop_on_error(true);
ASSERT_THROW(data_sm_->count_metadata(bc_stop_on_error), runtime_error);
}
//----------------------------------------------------------------