Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 260 insertions, 0 deletions

diff --git a/src/ceph_mds.cc b/src/ceph_mds.cc
new file mode 100644
index 000000000..b5674befc
--- /dev/null
+++ b/src/ceph_mds.cc
@@ -0,0 +1,260 @@
+// -*- 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>
+
+#include "common/async/context_pool.h"
+#include "include/ceph_features.h"
+#include "include/compat.h"
+#include "include/random.h"
+
+#include "common/config.h"
+#include "common/strtol.h"
+#include "common/numa.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 "common/Preforker.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/ceph_assert.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_mds
+
+static void usage()
+{
+  cout << "usage: ceph-mds -i <ID> [flags]\n"
+       << "  -m monitorip:port\n"
+       << "        connect to monitor at given address\n"
+       << "  --debug_mds n\n"
+       << "        debug MDS level (e.g. 10)\n"
+       << std::endl;
+  generic_server_usage();
+}
+
+
+MDSDaemon *mds = NULL;
+
+
+static void handle_mds_signal(int signum)
+{
+  if (mds)
+    mds->handle_signal(signum);
+}
+
+int main(int argc, const char **argv)
+{
+  ceph_pthread_setname(pthread_self(), "ceph-mds");
+
+  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_MDS, CODE_ENVIRONMENT_DAEMON, 0);
+  ceph_heap_profiler_init();
+
+  int numa_node = g_conf().get_val<int64_t>("mds_numa_node");
+  size_t numa_cpu_set_size = 0;
+  cpu_set_t numa_cpu_set;
+  if (numa_node >= 0) {
+    int r = get_numa_node_cpu_set(numa_node, &numa_cpu_set_size, &numa_cpu_set);
+    if (r < 0) {
+      dout(1) << __func__ << " unable to determine mds numa node " << numa_node
+              << " CPUs" << dendl;
+      numa_node = -1;
+    } else {
+      r = set_cpu_affinity_all_threads(numa_cpu_set_size, &numa_cpu_set);
+      if (r < 0) {
+        derr << __func__ << " failed to set numa affinity: " << cpp_strerror(r)
+        << dendl;
+      }
+    }
+  } else {
+    dout(1) << __func__ << " not setting numa affinity" << dendl;
+  }
+  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_witharg(args, i, &val, "--hot-standby", (char*)NULL)) {
+      dout(0) << "--hot-standby is obsolete and has no effect" << dendl;
+    }
+    else {
+      derr << "Error: can't understand argument: " << *i << "\n" << dendl;
+      exit(1);
+    }
+  }
+
+  Preforker forker;
+
+  entity_addrvec_t addrs;
+  pick_addresses(g_ceph_context, CEPH_PICK_ADDRESS_PUBLIC, &addrs);
+
+  // Normal startup
+  if (g_conf()->name.has_default_id()) {
+    derr << "must specify '-i name' with the ceph-mds instance name" << dendl;
+    exit(1);
+  }
+
+  if (g_conf()->name.get_id().empty() ||
+      (g_conf()->name.get_id()[0] >= '0' && g_conf()->name.get_id()[0] <= '9')) {
+    derr << "MDS id '" << g_conf()->name << "' is invalid. "
+      "MDS names may not start with a numeric digit." << dendl;
+    exit(1);
+  }
+
+  if (global_init_prefork(g_ceph_context) >= 0) {
+    std::string err;
+    int r = forker.prefork(err);
+    if (r < 0) {
+      cerr << err << std::endl;
+      return r;
+    }
+    if (forker.is_parent()) {
+      if (forker.parent_wait(err) != 0) {
+        return -ENXIO;
+      }
+      return 0;
+    }
+    global_init_postfork_start(g_ceph_context);
+  }
+  common_init_finish(g_ceph_context);
+  global_init_chdir(g_ceph_context);
+
+  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",
+				      Messenger::get_random_nonce());
+  if (!msgr)
+    forker.exit(1);
+  msgr->set_cluster_protocol(CEPH_MDS_PROTOCOL);
+
+  cout << "starting " << g_conf()->name << " at " << msgr->get_myaddrs()
+       << 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->bindv(addrs);
+  if (r < 0)
+    forker.exit(1);
+
+  // set up signal handlers, now that we've daemonized/forked.
+  init_async_signal_handler();
+  register_async_signal_handler(SIGHUP, sighup_handler);
+  
+  // get monmap
+  ceph::async::io_context_pool ctxpool(2);
+  MonClient mc(g_ceph_context, ctxpool);
+  if (mc.build_initial_monmap() < 0)
+    forker.exit(1);
+  global_init_chdir(g_ceph_context);
+
+  msgr->start();
+
+  // start mds
+  mds = new MDSDaemon(g_conf()->name.get_id().c_str(), msgr, &mc, ctxpool);
+
+  // in case we have to respawn...
+  mds->orig_argc = argc;
+  mds->orig_argv = argv;
+
+  if (g_conf()->daemonize) {
+    global_init_postfork_finish(g_ceph_context);
+    forker.daemonize();
+  }
+
+  r = mds->init();
+  if (r < 0) {
+    msgr->wait();
+    goto shutdown;
+  }
+
+  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:
+  ctxpool.stop();
+  // 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;
+}