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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* In memory space allocator test cases.
* Author: Ramesh Chander, Ramesh.Chander@sandisk.com
*/
#include <iostream>
#include <boost/scoped_ptr.hpp>
#include <gtest/gtest.h>
#include "common/Mutex.h"
#include "common/Cond.h"
#include "common/errno.h"
#include "include/stringify.h"
#include "include/Context.h"
#include "os/bluestore/Allocator.h"
#include "os/bluestore/BitAllocator.h"
#if GTEST_HAS_PARAM_TEST
class AllocTest : public ::testing::TestWithParam<const char*> {
public:
boost::scoped_ptr<Allocator> alloc;
AllocTest(): alloc(0) { }
void init_alloc(int64_t size, uint64_t min_alloc_size) {
std::cout << "Creating alloc type " << string(GetParam()) << " \n";
alloc.reset(Allocator::create(g_ceph_context, string(GetParam()), size,
min_alloc_size));
}
void init_close() {
alloc.reset(0);
}
};
TEST_P(AllocTest, test_alloc_init)
{
int64_t blocks = BmapEntry::size();
init_alloc(blocks, 1);
ASSERT_EQ(0U, alloc->get_free());
alloc->shutdown();
blocks = BitMapZone::get_total_blocks() * 2 + 16;
init_alloc(blocks, 1);
ASSERT_EQ(0U, alloc->get_free());
alloc->shutdown();
blocks = BitMapZone::get_total_blocks() * 2;
init_alloc(blocks, 1);
ASSERT_EQ(alloc->get_free(), (uint64_t) 0);
}
TEST_P(AllocTest, test_alloc_min_alloc)
{
int64_t block_size = 1024;
int64_t blocks = BitMapZone::get_total_blocks() * 2 * block_size;
{
init_alloc(blocks, block_size);
alloc->init_add_free(block_size, block_size);
EXPECT_EQ(alloc->reserve(block_size), 0);
AllocExtentVector extents;
EXPECT_EQ(block_size, alloc->allocate(block_size, block_size,
0, (int64_t) 0, &extents));
}
/*
* Allocate extent and make sure all comes in single extent.
*/
{
alloc->init_add_free(0, block_size * 4);
EXPECT_EQ(alloc->reserve(block_size * 4), 0);
AllocExtentVector extents;
EXPECT_EQ(4*block_size,
alloc->allocate(4 * (uint64_t)block_size, (uint64_t) block_size,
0, (int64_t) 0, &extents));
EXPECT_EQ(1u, extents.size());
EXPECT_EQ(extents[0].length, 4 * block_size);
}
/*
* Allocate extent and make sure we get two different extents.
*/
{
alloc->init_add_free(0, block_size * 2);
alloc->init_add_free(3 * block_size, block_size * 2);
EXPECT_EQ(alloc->reserve(block_size * 4), 0);
AllocExtentVector extents;
EXPECT_EQ(4*block_size,
alloc->allocate(4 * (uint64_t)block_size, (uint64_t) block_size,
0, (int64_t) 0, &extents));
EXPECT_EQ(2u, extents.size());
EXPECT_EQ(extents[0].length, 2 * block_size);
EXPECT_EQ(extents[1].length, 2 * block_size);
}
alloc->shutdown();
}
TEST_P(AllocTest, test_alloc_min_max_alloc)
{
int64_t block_size = 1024;
int64_t blocks = BitMapZone::get_total_blocks() * 2 * block_size;
init_alloc(blocks, block_size);
/*
* Make sure we get all extents different when
* min_alloc_size == max_alloc_size
*/
{
alloc->init_add_free(0, block_size * 4);
EXPECT_EQ(alloc->reserve(block_size * 4), 0);
AllocExtentVector extents;
EXPECT_EQ(4*block_size,
alloc->allocate(4 * (uint64_t)block_size, (uint64_t) block_size,
block_size, (int64_t) 0, &extents));
for (auto e : extents) {
EXPECT_EQ(e.length, block_size);
}
EXPECT_EQ(4u, extents.size());
}
/*
* Make sure we get extents of length max_alloc size
* when max alloc size > min_alloc size
*/
{
alloc->init_add_free(0, block_size * 4);
EXPECT_EQ(alloc->reserve(block_size * 4), 0);
AllocExtentVector extents;
EXPECT_EQ(4*block_size,
alloc->allocate(4 * (uint64_t)block_size, (uint64_t) block_size,
2 * block_size, (int64_t) 0, &extents));
EXPECT_EQ(2u, extents.size());
for (auto& e : extents) {
EXPECT_EQ(e.length, block_size * 2);
}
}
/*
* Make sure allocations are of min_alloc_size when min_alloc_size > block_size.
*/
{
alloc->init_add_free(0, block_size * 1024);
EXPECT_EQ(alloc->reserve(block_size * 1024), 0);
AllocExtentVector extents;
EXPECT_EQ(1024 * block_size,
alloc->allocate(1024 * (uint64_t)block_size,
(uint64_t) block_size * 4,
block_size * 4, (int64_t) 0, &extents));
for (auto& e : extents) {
EXPECT_EQ(e.length, block_size * 4);
}
EXPECT_EQ(1024u/4, extents.size());
}
/*
* Allocate and free.
*/
{
alloc->init_add_free(0, block_size * 16);
EXPECT_EQ(alloc->reserve(block_size * 16), 0);
AllocExtentVector extents;
EXPECT_EQ(16 * block_size,
alloc->allocate(16 * (uint64_t)block_size, (uint64_t) block_size,
2 * block_size, (int64_t) 0, &extents));
EXPECT_EQ(extents.size(), 8u);
for (auto& e : extents) {
EXPECT_EQ(e.length, 2 * block_size);
}
}
}
TEST_P(AllocTest, test_alloc_failure)
{
int64_t block_size = 1024;
int64_t blocks = BitMapZone::get_total_blocks() * block_size;
init_alloc(blocks, block_size);
{
alloc->init_add_free(0, block_size * 256);
alloc->init_add_free(block_size * 512, block_size * 256);
EXPECT_EQ(alloc->reserve(block_size * 512), 0);
AllocExtentVector extents;
EXPECT_EQ(512 * block_size,
alloc->allocate(512 * (uint64_t)block_size,
(uint64_t) block_size * 256,
block_size * 256, (int64_t) 0, &extents));
alloc->init_add_free(0, block_size * 256);
alloc->init_add_free(block_size * 512, block_size * 256);
extents.clear();
EXPECT_EQ(alloc->reserve(block_size * 512), 0);
EXPECT_EQ(-ENOSPC,
alloc->allocate(512 * (uint64_t)block_size,
(uint64_t) block_size * 512,
block_size * 512, (int64_t) 0, &extents));
}
}
TEST_P(AllocTest, test_alloc_hint_bmap)
{
if (GetParam() == std::string("stupid")) {
return;
}
int64_t blocks = BitMapArea::get_level_factor(g_ceph_context, 2) * 4;
int64_t allocated = 0;
int64_t zone_size = 1024;
g_conf->set_val("bluestore_bitmapallocator_blocks_per_zone",
std::to_string(zone_size));
init_alloc(blocks, 1);
alloc->init_add_free(0, blocks);
AllocExtentVector extents;
alloc->reserve(blocks);
allocated = alloc->allocate(1, 1, 1, zone_size, &extents);
ASSERT_EQ(1, allocated);
ASSERT_EQ(1u, extents.size());
ASSERT_EQ(extents[0].offset, (uint64_t) zone_size);
extents.clear();
allocated = alloc->allocate(1, 1, 1, zone_size * 2 - 1, &extents);
EXPECT_EQ(1, allocated);
ASSERT_EQ(1u, extents.size());
EXPECT_EQ((int64_t) extents[0].offset, zone_size * 2 - 1);
/*
* Wrap around with hint
*/
extents.clear();
allocated = alloc->allocate(zone_size * 2, 1, 1, blocks - zone_size * 2,
&extents);
ASSERT_EQ(zone_size * 2, allocated);
EXPECT_EQ(zone_size * 2, (int)extents.size());
EXPECT_EQ((int64_t)extents[0].offset, blocks - zone_size * 2);
extents.clear();
allocated = alloc->allocate(zone_size, 1, 1, blocks - zone_size, &extents);
ASSERT_EQ(zone_size, allocated);
EXPECT_EQ(zone_size, (int)extents.size());
EXPECT_EQ(extents[0].offset, (uint64_t) 0);
}
INSTANTIATE_TEST_CASE_P(
Allocator,
AllocTest,
::testing::Values("stupid", "bitmap"));
#else
TEST(DummyTest, ValueParameterizedTestsAreNotSupportedOnThisPlatform) {}
#endif
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