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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/perf_counters.h"
#include "global/global_init.h"
#include "global/signal_handler.h"
#include "Mirror.h"
#include "Types.h"
#include <vector>
rbd::mirror::Mirror *mirror = nullptr;
PerfCounters *g_journal_perf_counters = nullptr;
PerfCounters *g_snapshot_perf_counters = nullptr;
void usage() {
std::cout << "usage: rbd-mirror [options...]" << 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();
}
static void handle_signal(int signum)
{
if (mirror)
mirror->handle_signal(signum);
}
int main(int argc, const char **argv)
{
auto args = argv_to_vec(argc, argv);
if (args.empty()) {
std::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(nullptr, args, CEPH_ENTITY_TYPE_CLIENT,
CODE_ENVIRONMENT_DAEMON,
CINIT_FLAG_UNPRIVILEGED_DAEMON_DEFAULTS);
if (g_conf()->daemonize) {
global_init_daemonize(g_ceph_context);
}
common_init_finish(g_ceph_context);
init_async_signal_handler();
register_async_signal_handler(SIGHUP, handle_signal);
register_async_signal_handler_oneshot(SIGINT, handle_signal);
register_async_signal_handler_oneshot(SIGTERM, handle_signal);
auto cmd_args = argv_to_vec(argc, argv);
// disable unnecessary librbd cache
g_ceph_context->_conf.set_val_or_die("rbd_cache", "false");
auto prio =
g_ceph_context->_conf.get_val<int64_t>("rbd_mirror_perf_stats_prio");
{
PerfCountersBuilder plb(g_ceph_context, "rbd_mirror_journal",
rbd::mirror::l_rbd_mirror_journal_first,
rbd::mirror::l_rbd_mirror_journal_last);
plb.add_u64_counter(rbd::mirror::l_rbd_mirror_journal_entries, "entries",
"Number of entries replayed", nullptr, prio);
plb.add_u64_counter(rbd::mirror::l_rbd_mirror_journal_replay_bytes,
"replay_bytes", "Total bytes replayed", nullptr, prio,
unit_t(UNIT_BYTES));
plb.add_time_avg(rbd::mirror::l_rbd_mirror_journal_replay_latency,
"replay_latency", "Replay latency", nullptr, prio);
g_journal_perf_counters = plb.create_perf_counters();
}
{
PerfCountersBuilder plb(
g_ceph_context, "rbd_mirror_snapshot",
rbd::mirror::l_rbd_mirror_snapshot_first,
rbd::mirror::l_rbd_mirror_snapshot_remote_timestamp);
plb.add_u64_counter(rbd::mirror::l_rbd_mirror_snapshot_snapshots,
"snapshots", "Number of snapshots synced", nullptr,
prio);
plb.add_time_avg(rbd::mirror::l_rbd_mirror_snapshot_sync_time, "sync_time",
"Average sync time", nullptr, prio);
plb.add_u64_counter(rbd::mirror::l_rbd_mirror_snapshot_sync_bytes,
"sync_bytes", "Total bytes synced", nullptr, prio,
unit_t(UNIT_BYTES));
g_snapshot_perf_counters = plb.create_perf_counters();
}
g_ceph_context->get_perfcounters_collection()->add(g_journal_perf_counters);
g_ceph_context->get_perfcounters_collection()->add(g_snapshot_perf_counters);
mirror = new rbd::mirror::Mirror(g_ceph_context, cmd_args);
int r = mirror->init();
if (r < 0) {
std::cerr << "failed to initialize: " << cpp_strerror(r) << std::endl;
goto cleanup;
}
mirror->run();
cleanup:
unregister_async_signal_handler(SIGHUP, handle_signal);
unregister_async_signal_handler(SIGINT, handle_signal);
unregister_async_signal_handler(SIGTERM, handle_signal);
shutdown_async_signal_handler();
g_ceph_context->get_perfcounters_collection()->remove(g_journal_perf_counters);
g_ceph_context->get_perfcounters_collection()->remove(g_snapshot_perf_counters);
delete mirror;
delete g_journal_perf_counters;
delete g_snapshot_perf_counters;
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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