--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include <iostream>
+#include <string>
+using namespace std;
+
+#include "include/ceph_features.h"
+#include "include/compat.h"
+
+#include "common/config.h"
+#include "common/strtol.h"
+
+#include "mon/MonMap.h"
+#include "mds/MDSDaemon.h"
+
+#include "msg/Messenger.h"
+
+#include "common/Timer.h"
+#include "common/ceph_argparse.h"
+#include "common/pick_address.h"
+
+#include "global/global_init.h"
+#include "global/signal_handler.h"
+#include "global/pidfile.h"
+
+#include "mon/MonClient.h"
+
+#include "auth/KeyRing.h"
+
+#include "perfglue/heap_profiler.h"
+
+#include "include/assert.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_mds
+
+static void usage()
+{
+ cout << "usage: ceph-mds -i <ID> [flags] [[--hot-standby][rank]]\n"
+ << " -m monitorip:port\n"
+ << " connect to monitor at given address\n"
+ << " --debug_mds n\n"
+ << " debug MDS level (e.g. 10)\n"
+ << " --hot-standby rank\n"
+ << " start up as a hot standby for rank\n"
+ << std::endl;
+ generic_server_usage();
+}
+
+
+static int parse_rank(const char *opt_name, const std::string &val)
+{
+ std::string err;
+ int ret = strict_strtol(val.c_str(), 10, &err);
+ if (!err.empty()) {
+ derr << "error parsing " << opt_name << ": failed to parse rank. "
+ << "It must be an int." << "\n" << dendl;
+ usage();
+ }
+ return ret;
+}
+
+
+
+MDSDaemon *mds = NULL;
+
+
+static void handle_mds_signal(int signum)
+{
+ if (mds)
+ mds->handle_signal(signum);
+}
+
+#ifdef BUILDING_FOR_EMBEDDED
+extern "C" int cephd_mds(int argc, const char **argv)
+#else
+int main(int argc, const char **argv)
+#endif
+{
+ ceph_pthread_setname(pthread_self(), "ceph-mds");
+
+ vector<const char*> args;
+ argv_to_vec(argc, argv, args);
+ env_to_vec(args);
+
+ auto cct = global_init(NULL, args,
+ CEPH_ENTITY_TYPE_MDS, CODE_ENVIRONMENT_DAEMON,
+ 0, "mds_data");
+ ceph_heap_profiler_init();
+
+ std::string val, action;
+ for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) {
+ if (ceph_argparse_double_dash(args, i)) {
+ break;
+ }
+ else if (ceph_argparse_flag(args, i, "--help", "-h", (char*)NULL)) {
+ // exit(1) will be called in the usage()
+ usage();
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--hot-standby", (char*)NULL)) {
+ int r = parse_rank("hot-standby", val);
+ dout(0) << "requesting standby_replay for mds." << r << dendl;
+ char rb[32];
+ snprintf(rb, sizeof(rb), "%d", r);
+ g_conf->set_val("mds_standby_for_rank", rb);
+ g_conf->set_val("mds_standby_replay", "true");
+ g_conf->apply_changes(NULL);
+ }
+ else {
+ derr << "Error: can't understand argument: " << *i << "\n" << dendl;
+ usage();
+ }
+ }
+
+ pick_addresses(g_ceph_context, CEPH_PICK_ADDRESS_PUBLIC);
+
+ // Normal startup
+ if (g_conf->name.has_default_id()) {
+ derr << "must specify '-i name' with the ceph-mds instance name" << dendl;
+ usage();
+ }
+
+ if (g_conf->name.get_id().empty() ||
+ (g_conf->name.get_id()[0] >= '0' && g_conf->name.get_id()[0] <= '9')) {
+ derr << "deprecation warning: MDS id '" << g_conf->name
+ << "' is invalid and will be forbidden in a future version. "
+ "MDS names may not start with a numeric digit." << dendl;
+ }
+
+ uint64_t nonce = 0;
+ get_random_bytes((char*)&nonce, sizeof(nonce));
+
+ std::string public_msgr_type = g_conf->ms_public_type.empty() ? g_conf->get_val<std::string>("ms_type") : g_conf->ms_public_type;
+ Messenger *msgr = Messenger::create(g_ceph_context, public_msgr_type,
+ entity_name_t::MDS(-1), "mds",
+ nonce, Messenger::HAS_MANY_CONNECTIONS);
+ if (!msgr)
+ exit(1);
+ msgr->set_cluster_protocol(CEPH_MDS_PROTOCOL);
+
+ cout << "starting " << g_conf->name << " at " << msgr->get_myaddr()
+ << std::endl;
+ uint64_t required =
+ CEPH_FEATURE_OSDREPLYMUX;
+
+ msgr->set_default_policy(Messenger::Policy::lossy_client(required));
+ msgr->set_policy(entity_name_t::TYPE_MON,
+ Messenger::Policy::lossy_client(CEPH_FEATURE_UID |
+ CEPH_FEATURE_PGID64));
+ msgr->set_policy(entity_name_t::TYPE_MDS,
+ Messenger::Policy::lossless_peer(CEPH_FEATURE_UID));
+ msgr->set_policy(entity_name_t::TYPE_CLIENT,
+ Messenger::Policy::stateful_server(0));
+
+ int r = msgr->bind(g_conf->public_addr);
+ if (r < 0)
+ exit(1);
+
+ global_init_daemonize(g_ceph_context);
+ common_init_finish(g_ceph_context);
+
+ // get monmap
+ MonClient mc(g_ceph_context);
+ if (mc.build_initial_monmap() < 0)
+ return -1;
+ global_init_chdir(g_ceph_context);
+
+ msgr->start();
+
+ // start mds
+ mds = new MDSDaemon(g_conf->name.get_id().c_str(), msgr, &mc);
+
+ // in case we have to respawn...
+ mds->orig_argc = argc;
+ mds->orig_argv = argv;
+
+ r = mds->init();
+ if (r < 0) {
+ msgr->wait();
+ goto shutdown;
+ }
+
+ // set up signal handlers, now that we've daemonized/forked.
+ init_async_signal_handler();
+ register_async_signal_handler(SIGHUP, sighup_handler);
+ register_async_signal_handler_oneshot(SIGINT, handle_mds_signal);
+ register_async_signal_handler_oneshot(SIGTERM, handle_mds_signal);
+
+ if (g_conf->inject_early_sigterm)
+ kill(getpid(), SIGTERM);
+
+ msgr->wait();
+
+ unregister_async_signal_handler(SIGHUP, sighup_handler);
+ unregister_async_signal_handler(SIGINT, handle_mds_signal);
+ unregister_async_signal_handler(SIGTERM, handle_mds_signal);
+ shutdown_async_signal_handler();
+
+ shutdown:
+ // yuck: grab the mds lock, so we can be sure that whoever in *mds
+ // called shutdown finishes what they were doing.
+ mds->mds_lock.Lock();
+ mds->mds_lock.Unlock();
+
+ pidfile_remove();
+
+ // only delete if it was a clean shutdown (to aid memory leak
+ // detection, etc.). don't bother if it was a suicide.
+ if (mds->is_clean_shutdown()) {
+ delete mds;
+ delete msgr;
+ }
+
+ // cd on exit, so that gmon.out (if any) goes into a separate directory for each node.
+ char s[20];
+ snprintf(s, sizeof(s), "gmon/%d", getpid());
+ if ((mkdir(s, 0755) == 0) && (chdir(s) == 0)) {
+ cerr << "ceph-mds: gmon.out should be in " << s << std::endl;
+ }
+
+ return 0;
+}
+
Code Review / stor4nfv.git / blobdiff