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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include <stdio.h>
#include <string.h>
#include <iostream>
#include <gtest/gtest.h>
#include "global/global_init.h"
#include "global/global_context.h"
#include "common/ceph_context.h"
#include "common/ceph_argparse.h"
#include "include/stringify.h"
#include "common/errno.h"
#include "os/bluestore/BlockDevice.h"
class TempBdev {
public:
TempBdev(uint64_t size)
: path{get_temp_bdev(size)}
{}
~TempBdev() {
rm_temp_bdev(path);
}
const std::string path;
private:
static string get_temp_bdev(uint64_t size)
{
static int n = 0;
string fn = "ceph_test_bluefs.tmp.block." + stringify(getpid())
+ "." + stringify(++n);
int fd = ::open(fn.c_str(), O_CREAT|O_RDWR|O_TRUNC, 0644);
ceph_assert(fd >= 0);
int r = ::ftruncate(fd, size);
ceph_assert(r >= 0);
::close(fd);
return fn;
}
static void rm_temp_bdev(string f)
{
::unlink(f.c_str());
}
};
TEST(KernelDevice, Ticket45337) {
// Large (>=2 GB) writes are incomplete when bluefs_buffered_io = true
uint64_t size = 1048576ull * 8192;
TempBdev bdev{ size };
const bool buffered = true;
std::unique_ptr<BlockDevice> b(
BlockDevice::create(g_ceph_context, bdev.path, NULL, NULL,
[](void* handle, void* aio) {}, NULL));
bufferlist bl;
// writing a bit less than 4GB
for (auto i = 0; i < 4000; i++) {
string s(1048576, 'a' + (i % 28));
bl.append(s);
}
uint64_t magic_offs = bl.length();
string s(4086, 'z');
s += "0123456789";
bl.append(s);
{
int r = b->open(bdev.path);
if (r < 0) {
std::cerr << "open " << bdev.path << " failed" << std::endl;
return;
}
}
std::unique_ptr<IOContext> ioc(new IOContext(g_ceph_context, NULL));
auto r = b->aio_write(0, bl, ioc.get(), buffered);
ASSERT_EQ(r, 0);
if (ioc->has_pending_aios()) {
b->aio_submit(ioc.get());
ioc->aio_wait();
}
char outbuf[0x1000];
r = b->read_random(magic_offs, sizeof(outbuf), outbuf, buffered);
ASSERT_EQ(r, 0);
ASSERT_EQ(memcmp(s.c_str(), outbuf, sizeof(outbuf)), 0);
b->close();
}
int main(int argc, char **argv) {
vector<const char*> args;
argv_to_vec(argc, (const char **)argv, args);
map<string,string> defaults = {
{ "debug_bdev", "1/20" }
};
auto cct = global_init(&defaults, args, CEPH_ENTITY_TYPE_CLIENT,
CODE_ENVIRONMENT_UTILITY,
CINIT_FLAG_NO_DEFAULT_CONFIG_FILE);
common_init_finish(g_ceph_context);
g_ceph_context->_conf.set_val(
"enable_experimental_unrecoverable_data_corrupting_features",
"*");
g_ceph_context->_conf.apply_changes(nullptr);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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