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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "common/ceph_argparse.h"
#include "common/config.h"
#include "common/debug.h"
#include "common/errno.h"
#include "common/Cond.h"
#include "include/rados/librados.hpp"
#include "include/rbd/librbd.hpp"
#include "global/global_init.h"
#include <string>
#include <vector>
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_rbd_mirror
#undef dout_prefix
#define dout_prefix *_dout << "random-write: "
namespace {
const uint32_t NUM_THREADS = 8;
const uint32_t MAX_IO_SIZE = 24576;
const uint32_t MIN_IO_SIZE = 4;
void usage() {
std::cout << "usage: ceph_test_rbd_mirror_random_write [options...] \\" << std::endl;
std::cout << " <pool> <image>" << std::endl;
std::cout << std::endl;
std::cout << " pool image pool" << std::endl;
std::cout << " image image to write" << std::endl;
std::cout << std::endl;
std::cout << "options:\n";
std::cout << " -m monaddress[:port] connect to specified monitor\n";
std::cout << " --keyring=<path> path to keyring for local cluster\n";
std::cout << " --log-file=<logfile> file to log debug output\n";
std::cout << " --debug-rbd-mirror=<log-level>/<memory-level> set rbd-mirror debug level\n";
generic_server_usage();
}
void rbd_bencher_completion(void *c, void *pc);
struct rbd_bencher {
librbd::Image *image;
ceph::mutex lock = ceph::make_mutex("rbd_bencher::lock");
ceph::condition_variable cond;
int in_flight;
explicit rbd_bencher(librbd::Image *i)
: image(i),
in_flight(0) {
}
bool start_write(int max, uint64_t off, uint64_t len, bufferlist& bl,
int op_flags) {
{
std::lock_guard l{lock};
if (in_flight >= max)
return false;
in_flight++;
}
librbd::RBD::AioCompletion *c =
new librbd::RBD::AioCompletion((void *)this, rbd_bencher_completion);
image->aio_write2(off, len, bl, c, op_flags);
//cout << "start " << c << " at " << off << "~" << len << std::endl;
return true;
}
void wait_for(int max) {
std::unique_lock l{lock};
while (in_flight > max) {
cond.wait_for(l, 200ms);
}
}
};
void rbd_bencher_completion(void *vc, void *pc) {
librbd::RBD::AioCompletion *c = (librbd::RBD::AioCompletion *)vc;
rbd_bencher *b = static_cast<rbd_bencher *>(pc);
//cout << "complete " << c << std::endl;
int ret = c->get_return_value();
if (ret != 0) {
cout << "write error: " << cpp_strerror(ret) << std::endl;
exit(ret < 0 ? -ret : ret);
}
b->lock.lock();
b->in_flight--;
b->cond.notify_all();
b->lock.unlock();
c->release();
}
void write_image(librbd::Image &image) {
srand(time(NULL) % (unsigned long) -1);
uint64_t max_io_bytes = MAX_IO_SIZE * 1024;
bufferptr bp(max_io_bytes);
memset(bp.c_str(), rand() & 0xff, bp.length());
bufferlist bl;
bl.push_back(bp);
uint64_t size = 0;
image.size(&size);
ceph_assert(size != 0);
vector<uint64_t> thread_offset;
uint64_t i;
uint64_t start_pos;
// disturb all thread's offset, used by seq write
for (i = 0; i < NUM_THREADS; i++) {
start_pos = (rand() % (size / max_io_bytes)) * max_io_bytes;
thread_offset.push_back(start_pos);
}
uint64_t total_ios = 0;
uint64_t total_bytes = 0;
rbd_bencher b(&image);
while (true) {
b.wait_for(NUM_THREADS - 1);
for (uint32_t i = 0; i < NUM_THREADS; ++i) {
// mostly small writes with a small chance of large writes
uint32_t io_modulo = MIN_IO_SIZE + 1;
if (rand() % 30 == 0) {
io_modulo += MAX_IO_SIZE;
}
uint32_t io_size = (((rand() % io_modulo) + MIN_IO_SIZE) * 1024);
thread_offset[i] = (rand() % (size / io_size)) * io_size;
if (!b.start_write(NUM_THREADS, thread_offset[i], io_size, bl,
LIBRADOS_OP_FLAG_FADVISE_RANDOM)) {
break;
}
++i;
++total_ios;
total_bytes += io_size;
if (total_ios % 100 == 0) {
std::cout << total_ios << " IOs, " << total_bytes << " bytes"
<< std::endl;
}
}
}
b.wait_for(0);
}
} // anonymous namespace
int main(int argc, const char **argv)
{
std::vector<const char*> args;
argv_to_vec(argc, argv, args);
if (args.empty()) {
cerr << argv[0] << ": -h or --help for usage" << std::endl;
exit(1);
}
if (ceph_argparse_need_usage(args)) {
usage();
exit(0);
}
auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT,
CODE_ENVIRONMENT_UTILITY,
CINIT_FLAG_NO_MON_CONFIG);
if (args.size() < 2) {
usage();
return EXIT_FAILURE;
}
std::string pool_name = args[0];
std::string image_name = args[1];
common_init_finish(g_ceph_context);
dout(5) << "connecting to cluster" << dendl;
librados::Rados rados;
librados::IoCtx io_ctx;
librbd::RBD rbd;
librbd::Image image;
int r = rados.init_with_context(g_ceph_context);
if (r < 0) {
derr << "could not initialize RADOS handle" << dendl;
return EXIT_FAILURE;
}
r = rados.connect();
if (r < 0) {
derr << "error connecting to local cluster" << dendl;
return EXIT_FAILURE;
}
r = rados.ioctx_create(pool_name.c_str(), io_ctx);
if (r < 0) {
derr << "error finding local pool " << pool_name << ": "
<< cpp_strerror(r) << dendl;
return EXIT_FAILURE;
}
r = rbd.open(io_ctx, image, image_name.c_str());
if (r < 0) {
derr << "error opening image " << image_name << ": "
<< cpp_strerror(r) << dendl;
return EXIT_FAILURE;
}
write_image(image);
return EXIT_SUCCESS;
}
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