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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "test/crimson/gtest_seastar.h"
#include "crimson/common/log.h"
#include "crimson/os/seastore/cache.h"
#include "crimson/os/seastore/segment_manager/ephemeral.h"
#include "test/crimson/seastore/test_block.h"
using namespace crimson;
using namespace crimson::os;
using namespace crimson::os::seastore;
namespace {
[[maybe_unused]] seastar::logger& logger() {
return crimson::get_logger(ceph_subsys_test);
}
}
struct cache_test_t : public seastar_test_suite_t {
segment_manager::EphemeralSegmentManagerRef segment_manager;
Cache cache;
paddr_t current{0, 0};
journal_seq_t seq;
cache_test_t()
: segment_manager(segment_manager::create_test_ephemeral()),
cache(*segment_manager) {}
seastar::future<std::optional<paddr_t>> submit_transaction(
TransactionRef t) {
auto record = cache.try_construct_record(*t);
if (!record) {
return seastar::make_ready_future<std::optional<paddr_t>>(
std::nullopt);
}
bufferlist bl;
for (auto &&block : record->extents) {
bl.append(block.bl);
}
ceph_assert((segment_off_t)bl.length() <
segment_manager->get_segment_size());
if (current.offset + (segment_off_t)bl.length() >
segment_manager->get_segment_size())
current = paddr_t{current.segment + 1, 0};
auto prev = current;
current.offset += bl.length();
return segment_manager->segment_write(
prev,
std::move(bl),
true
).safe_then(
[this, prev, t=std::move(t)]() mutable {
cache.complete_commit(*t, prev, seq /* TODO */);
return seastar::make_ready_future<std::optional<paddr_t>>(prev);
},
crimson::ct_error::all_same_way([](auto e) {
ASSERT_FALSE("failed to submit");
})
);
}
auto get_transaction() {
return make_transaction();
}
seastar::future<> set_up_fut() final {
return segment_manager->init(
).safe_then(
[this] {
return seastar::do_with(
make_transaction(),
[this](auto &transaction) {
cache.init();
return cache.mkfs(*transaction).safe_then(
[this, &transaction] {
return submit_transaction(std::move(transaction)).then(
[](auto p) {
ASSERT_TRUE(p);
});
});
});
}).handle_error(
crimson::ct_error::all_same_way([](auto e) {
ASSERT_FALSE("failed to submit");
})
);
}
seastar::future<> tear_down_fut() final {
return cache.close().handle_error(
Cache::close_ertr::assert_all{});
}
};
TEST_F(cache_test_t, test_addr_fixup)
{
run_async([this] {
paddr_t addr;
int csum = 0;
{
auto t = get_transaction();
auto extent = cache.alloc_new_extent<TestBlockPhysical>(
*t,
TestBlockPhysical::SIZE);
extent->set_contents('c');
csum = extent->get_crc32c();
auto ret = submit_transaction(std::move(t)).get0();
ASSERT_TRUE(ret);
addr = extent->get_paddr();
}
{
auto t = get_transaction();
auto extent = cache.get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_EQ(extent->get_paddr(), addr);
ASSERT_EQ(extent->get_crc32c(), csum);
}
});
}
TEST_F(cache_test_t, test_dirty_extent)
{
run_async([this] {
paddr_t addr;
int csum = 0;
int csum2 = 0;
{
// write out initial test block
auto t = get_transaction();
auto extent = cache.alloc_new_extent<TestBlockPhysical>(
*t,
TestBlockPhysical::SIZE);
extent->set_contents('c');
csum = extent->get_crc32c();
auto reladdr = extent->get_paddr();
ASSERT_TRUE(reladdr.is_relative());
{
// test that read with same transaction sees new block though
// uncommitted
auto extent = cache.get_extent<TestBlockPhysical>(
*t,
reladdr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_clean());
ASSERT_TRUE(extent->is_pending());
ASSERT_TRUE(extent->get_paddr().is_relative());
ASSERT_EQ(extent->get_version(), 0);
ASSERT_EQ(csum, extent->get_crc32c());
}
auto ret = submit_transaction(std::move(t)).get0();
ASSERT_TRUE(ret);
addr = extent->get_paddr();
}
{
// test that consecutive reads on the same extent get the same ref
auto t = get_transaction();
auto extent = cache.get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
auto t2 = get_transaction();
auto extent2 = cache.get_extent<TestBlockPhysical>(
*t2,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_EQ(&*extent, &*extent2);
}
{
// read back test block
auto t = get_transaction();
auto extent = cache.get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
// duplicate and reset contents
extent = cache.duplicate_for_write(*t, extent)->cast<TestBlockPhysical>();
extent->set_contents('c');
csum2 = extent->get_crc32c();
ASSERT_EQ(extent->get_paddr(), addr);
{
// test that concurrent read with fresh transaction sees old
// block
auto t2 = get_transaction();
auto extent = cache.get_extent<TestBlockPhysical>(
*t2,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_clean());
ASSERT_FALSE(extent->is_pending());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 0);
ASSERT_EQ(csum, extent->get_crc32c());
}
{
// test that read with same transaction sees new block
auto extent = cache.get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_dirty());
ASSERT_TRUE(extent->is_pending());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 1);
ASSERT_EQ(csum2, extent->get_crc32c());
}
// submit transaction
auto ret = submit_transaction(std::move(t)).get0();
ASSERT_TRUE(ret);
ASSERT_TRUE(extent->is_dirty());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 1);
ASSERT_EQ(extent->get_crc32c(), csum2);
}
{
// test that fresh transaction now sees newly dirty block
auto t = get_transaction();
auto extent = cache.get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_dirty());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 1);
ASSERT_EQ(csum2, extent->get_crc32c());
}
});
}
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