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	diff --git a/lib/cluster/corosync.c b/lib/cluster/corosync.c
	index 8797911c1a..5f0991a30e 100644
	--- a/lib/cluster/corosync.c
	+++ b/lib/cluster/corosync.c
	@@ -1,1086 +1,1092 @@
	/*
	* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <crm_internal.h>
	#include <bzlib.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>
	#include <netdb.h>

	#include <crm/common/ipc.h>
	#include <crm/cluster/internal.h>
	#include <crm/common/mainloop.h>
	#include <sys/utsname.h>

	#include <qb/qbipcc.h>
	#include <qb/qbutil.h>

	#include <corosync/corodefs.h>
	#include <corosync/corotypes.h>
	#include <corosync/hdb.h>
	#include <corosync/cpg.h>
	#include <corosync/cfg.h>
	#include <corosync/cmap.h>
	#include <corosync/quorum.h>

	#include <crm/msg_xml.h>

	cpg_handle_t pcmk_cpg_handle = 0;

	struct cpg_name pcmk_cpg_group = {
	.length = 0,
	.value[0] = 0,
	};

	quorum_handle_t pcmk_quorum_handle = 0;
	gboolean(*quorum_app_callback) (unsigned long long seq, gboolean quorate) = NULL;

	static char *pcmk_uname = NULL;
	static int pcmk_uname_len = 0;
	static uint32_t pcmk_nodeid = 0;

	#define cs_repeat(counter, max, code) do { \
	code; \
	if(rc == CS_ERR_TRY_AGAIN \|\| rc == CS_ERR_QUEUE_FULL) { \
	counter++; \
	crm_debug("Retrying operation after %ds", counter); \
	sleep(counter); \
	} else { \
	break; \
	} \
	} while(counter < max)

	#ifndef INTERFACE_MAX
	# define INTERFACE_MAX 2 /* from the private coroapi.h header */
	#endif

	static gboolean
	corosync_name_is_valid(const char key, const char name)
	{
	int octet;

	if(name == NULL) {
	crm_trace("%s is empty", key);
	return FALSE;

	} else if(sscanf(name, "%d.%d.%d.%d", &octet, &octet, &octet, &octet) == 4) {
	crm_trace("%s contains an ipv4 address, ignoring: %s", key, name);
	return FALSE;

	} else if(strstr(name, ":") != NULL) {
	crm_trace("%s contains an ipv4 address, ignoring: %s", key, name);
	return FALSE;
	}
	+ crm_trace("%s is valid", key);
	return TRUE;
	}

	/*
	* CFG functionality stolen from node_name() in corosync-quorumtool.c
	* This resolves the first address assigned to a node and returns the name or IP address.
	*/
	static char *corosync_node_name(cmap_handle_t cmap_handle, uint32_t nodeid)
	{
	int lpc = 0;
	int rc = CS_OK;
	int retries = 0;
	char *name = NULL;

	cmap_handle_t local_handle = 0;
	corosync_cfg_handle_t cfg_handle = 0;
	static corosync_cfg_callbacks_t cfg_callbacks = {};

	if(cmap_handle == 0 && local_handle == 0) {
	retries = 0;
	crm_trace("Initializing CMAP connection");
	do {
	rc = cmap_initialize(&local_handle);
	if(rc != CS_OK) {
	retries++;
	crm_debug("API connection setup failed: %s. Retrying in %ds", cs_strerror(rc), retries);
	sleep(retries);
	}

	} while(retries < 5 && rc != CS_OK);

	if (rc != CS_OK) {
	crm_warn("Could not connect to Cluster Configuration Database API, error %d", cs_strerror(rc));
	local_handle = 0;
	}
	}

	if(cmap_handle == 0) {
	cmap_handle = local_handle;
	}

	while(name == NULL && cmap_handle != 0) {
	uint32_t id = 0;
	- char *name = NULL;
	char *key = NULL;

	key = g_strdup_printf("nodelist.node.%d.nodeid", lpc);
	rc = cmap_get_uint32(cmap_handle, key, &id);
	+ crm_trace("Checking %u vs %u from %s", nodeid, id, key);
	g_free(key);

	if(rc != CS_OK) {
	break;
	}

	if(nodeid == id) {
	+ crm_trace("Searching for node name for %u in nodelist.node.%d %s", nodeid, lpc, name);
	if(name == NULL) {
	key = g_strdup_printf("nodelist.node.%d.ring0_addr", lpc);
	rc = cmap_get_string(cmap_handle, key, &name);
	+ crm_trace("%s = %s", key, name);

	if(corosync_name_is_valid(key, name) == FALSE) {
	free(name); name = NULL;
	}
	g_free(key);
	}

	if(name == NULL) {
	key = g_strdup_printf("nodelist.node.%d.name", lpc);
	rc = cmap_get_string(cmap_handle, key, &name);
	+ crm_trace("%s = %s %d", key, name, rc);

	if(corosync_name_is_valid(key, name) == FALSE) {
	free(name); name = NULL;
	}
	g_free(key);
	}
	break;
	}

	lpc++;
	}

	- if(local_handle) {
	- cmap_finalize(local_handle);
	- }
	-
	if(name == NULL) {
	retries = 0;
	crm_trace("Initializing CFG connection");
	do {
	rc = corosync_cfg_initialize(&cfg_handle, &cfg_callbacks);
	if(rc != CS_OK) {
	retries++;
	crm_debug("API connection setup failed: %s. Retrying in %ds", cs_strerror(rc), retries);
	sleep(retries);
	}

	} while(retries < 5 && rc != CS_OK);

	if (rc != CS_OK) {
	crm_warn("Could not connect to the Corosync CFG API, error %d", cs_strerror(rc));
	cfg_handle = 0;
	}
	}

	if(name == NULL && cfg_handle != 0) {
	int numaddrs;
	char buf[INET6_ADDRSTRLEN];

	socklen_t addrlen;
	struct sockaddr_storage *ss;
	corosync_cfg_node_address_t addrs[INTERFACE_MAX];

	rc = corosync_cfg_get_node_addrs(cfg_handle, nodeid, INTERFACE_MAX, &numaddrs, addrs);
	if (rc == CS_OK) {
	ss = (struct sockaddr_storage *)addrs[0].address;
	if (ss->ss_family == AF_INET6) {
	addrlen = sizeof(struct sockaddr_in6);
	} else {
	addrlen = sizeof(struct sockaddr_in);
	}

	if (getnameinfo((struct sockaddr *)addrs[0].address, addrlen, buf, sizeof(buf), NULL, 0, 0) == 0) {
	crm_notice("Inferred node name '%s' for nodeid %u from DNS", buf, nodeid);

	if(corosync_name_is_valid("DNS", buf)) {
	name = strdup(buf);
	}
	}
	+ } else {
	+ crm_debug("Unable to get node address for nodeid %u: %s", nodeid, cs_strerror(rc));
	}
	cmap_finalize(cfg_handle);
	}

	+ if(local_handle) {
	+ cmap_finalize(local_handle);
	+ }
	+
	if(name == NULL) {
	- crm_err("Unable to get node address for nodeid %u: %s", nodeid, cs_strerror(rc));
	+ crm_err("Unable to get node name for nodeid %u", nodeid);
	}
	return name;
	}

	enum crm_ais_msg_types
	text2msg_type(const char *text)
	{
	int type = crm_msg_none;

	CRM_CHECK(text != NULL, return type);
	if (safe_str_eq(text, "ais")) {
	type = crm_msg_ais;
	} else if (safe_str_eq(text, "crm_plugin")) {
	type = crm_msg_ais;
	} else if (safe_str_eq(text, CRM_SYSTEM_CIB)) {
	type = crm_msg_cib;
	} else if (safe_str_eq(text, CRM_SYSTEM_CRMD)) {
	type = crm_msg_crmd;
	} else if (safe_str_eq(text, CRM_SYSTEM_DC)) {
	type = crm_msg_crmd;
	} else if (safe_str_eq(text, CRM_SYSTEM_TENGINE)) {
	type = crm_msg_te;
	} else if (safe_str_eq(text, CRM_SYSTEM_PENGINE)) {
	type = crm_msg_pe;
	} else if (safe_str_eq(text, CRM_SYSTEM_LRMD)) {
	type = crm_msg_lrmd;
	} else if (safe_str_eq(text, CRM_SYSTEM_STONITHD)) {
	type = crm_msg_stonithd;
	} else if (safe_str_eq(text, "stonith-ng")) {
	type = crm_msg_stonith_ng;
	} else if (safe_str_eq(text, "attrd")) {
	type = crm_msg_attrd;

	} else {
	/* This will normally be a transient client rather than
	* a cluster daemon. Set the type to the pid of the client
	*/
	int scan_rc = sscanf(text, "%d", &type);

	if (scan_rc != 1) {
	/* Ensure its sane */
	type = crm_msg_none;
	}
	}
	return type;
	}

	static char *ais_cluster_name = NULL;

	gboolean
	crm_get_cluster_name(char **cname)
	{
	CRM_CHECK(cname != NULL, return FALSE);
	if (ais_cluster_name) {
	*cname = strdup(ais_cluster_name);
	return TRUE;
	}
	return FALSE;
	}

	gboolean
	send_ais_text(int class, const char *data,
	gboolean local, const char *node, enum crm_ais_msg_types dest)
	{
	static int msg_id = 0;
	static int local_pid = 0;

	int retries = 0;
	int rc = CS_OK;
	int buf_len = sizeof(cs_ipc_header_response_t);

	char *buf = NULL;
	struct iovec iov;
	const char *transport = "pcmk";
	AIS_Message *ais_msg = NULL;
	enum crm_ais_msg_types sender = text2msg_type(crm_system_name);

	/* There are only 6 handlers registered to crm_lib_service in plugin.c */
	CRM_CHECK(class < 6, crm_err("Invalid message class: %d", class); return FALSE);

	if (data == NULL) {
	data = "";
	}

	if (local_pid == 0) {
	local_pid = getpid();
	}

	if (sender == crm_msg_none) {
	sender = local_pid;
	}

	ais_msg = calloc(1, sizeof(AIS_Message));

	ais_msg->id = msg_id++;
	ais_msg->header.id = class;
	ais_msg->header.error = CS_OK;

	ais_msg->host.type = dest;
	ais_msg->host.local = local;
	if (node) {
	ais_msg->host.size = strlen(node);
	memset(ais_msg->host.uname, 0, MAX_NAME);
	memcpy(ais_msg->host.uname, node, ais_msg->host.size);
	ais_msg->host.id = 0;

	} else {
	ais_msg->host.size = 0;
	memset(ais_msg->host.uname, 0, MAX_NAME);
	ais_msg->host.id = 0;
	}

	ais_msg->sender.id = 0;
	ais_msg->sender.type = sender;
	ais_msg->sender.pid = local_pid;
	ais_msg->sender.size = pcmk_uname_len;
	memset(ais_msg->sender.uname, 0, MAX_NAME);
	memcpy(ais_msg->sender.uname, pcmk_uname, ais_msg->sender.size);

	ais_msg->size = 1 + strlen(data);

	if (ais_msg->size < CRM_BZ2_THRESHOLD) {
	failback:
	ais_msg = realloc(ais_msg, sizeof(AIS_Message) + ais_msg->size);
	memcpy(ais_msg->data, data, ais_msg->size);

	} else {
	char *compressed = NULL;
	char *uncompressed = strdup(data);
	unsigned int len = (ais_msg->size * 1.1) + 600; /* recomended size */

	crm_trace("Compressing message payload");
	compressed = malloc( len);

	rc = BZ2_bzBuffToBuffCompress(compressed, &len, uncompressed, ais_msg->size, CRM_BZ2_BLOCKS,
	0, CRM_BZ2_WORK);

	free(uncompressed);

	if (rc != BZ_OK) {
	crm_err("Compression failed: %d", rc);
	free(compressed);
	goto failback;
	}

	ais_msg = realloc(ais_msg, sizeof(AIS_Message) + len + 1);
	memcpy(ais_msg->data, compressed, len);
	ais_msg->data[len] = 0;
	free(compressed);

	ais_msg->is_compressed = TRUE;
	ais_msg->compressed_size = len;

	crm_trace("Compression details: %d -> %d", ais_msg->size, ais_data_len(ais_msg));
	}

	ais_msg->header.size = sizeof(AIS_Message) + ais_data_len(ais_msg);

	crm_trace("Sending%s message %d to %s.%s (data=%d, total=%d)",
	ais_msg->is_compressed ? " compressed" : "",
	ais_msg->id, ais_dest(&(ais_msg->host)), msg_type2text(dest),
	ais_data_len(ais_msg), ais_msg->header.size);

	iov.iov_base = ais_msg;
	iov.iov_len = ais_msg->header.size;
	buf = realloc(buf, buf_len);

	do {
	if (rc == CS_ERR_TRY_AGAIN \|\| rc == CS_ERR_QUEUE_FULL) {
	retries++;
	crm_info("Peer overloaded or membership in flux:"
	" Re-sending message (Attempt %d of 20)", retries);
	sleep(retries); /* Proportional back off */
	}

	errno = 0;
	transport = "cpg";
	CRM_CHECK(dest != crm_msg_ais, rc = CS_ERR_MESSAGE_ERROR; goto bail);
	rc = cpg_mcast_joined(pcmk_cpg_handle, CPG_TYPE_AGREED, &iov, 1);
	if (rc == CS_ERR_TRY_AGAIN \|\| rc == CS_ERR_QUEUE_FULL) {
	cpg_flow_control_state_t fc_state = CPG_FLOW_CONTROL_DISABLED;
	int rc2 = cpg_flow_control_state_get(pcmk_cpg_handle, &fc_state);

	if (rc2 == CS_OK && fc_state == CPG_FLOW_CONTROL_ENABLED) {
	crm_warn("Connection overloaded, cannot send messages");
	goto bail;

	} else if (rc2 != CS_OK) {
	crm_warn("Could not determin the connection state: %s (%d)",
	ais_error2text(rc2), rc2);
	goto bail;
	}
	}

	} while ((rc == CS_ERR_TRY_AGAIN \|\| rc == CS_ERR_QUEUE_FULL) && retries < 20);

	bail:
	if (rc != CS_OK) {
	crm_perror(LOG_ERR, "Sending message %d via %s: FAILED (rc=%d): %s",
	ais_msg->id, transport, rc, ais_error2text(rc));

	} else {
	crm_trace("Message %d: sent", ais_msg->id);
	}

	free(buf);
	free(ais_msg);
	return (rc == CS_OK);
	}

	gboolean
	send_ais_message(xmlNode * msg, gboolean local, const char *node, enum crm_ais_msg_types dest)
	{
	gboolean rc = TRUE;
	char *data = dump_xml_unformatted(msg);
	rc = send_ais_text(crm_class_cluster, data, local, node, dest);
	free(data);
	return rc;
	}

	void
	terminate_ais_connection(void)
	{
	crm_notice("Disconnecting from Corosync");

	if(pcmk_cpg_handle) {
	crm_trace("Disconnecting CPG");
	cpg_leave(pcmk_cpg_handle, &pcmk_cpg_group);
	cpg_finalize(pcmk_cpg_handle);
	pcmk_cpg_handle = 0;

	} else {
	crm_info("No CPG connection");
	}

	if(pcmk_quorum_handle) {
	crm_trace("Disconnecting quorum");
	quorum_finalize(pcmk_quorum_handle);
	pcmk_quorum_handle = 0;

	} else {
	crm_info("No Quorum connection");
	}
	}

	int ais_membership_timer = 0;
	gboolean ais_membership_force = FALSE;

	static gboolean
	ais_dispatch_message(AIS_Message * msg, gboolean(dispatch) (AIS_Message , char *, int))
	{
	char *data = NULL;
	char *uncompressed = NULL;

	xmlNode *xml = NULL;

	CRM_ASSERT(msg != NULL);

	crm_trace("Got new%s message (size=%d, %d, %d)",
	msg->is_compressed ? " compressed" : "",
	ais_data_len(msg), msg->size, msg->compressed_size);

	data = msg->data;
	if (msg->is_compressed && msg->size > 0) {
	int rc = BZ_OK;
	unsigned int new_size = msg->size + 1;

	if (check_message_sanity(msg, NULL) == FALSE) {
	goto badmsg;
	}

	crm_trace("Decompressing message data");
	uncompressed = calloc(1, new_size);
	rc = BZ2_bzBuffToBuffDecompress(uncompressed, &new_size, data, msg->compressed_size, 1, 0);

	if (rc != BZ_OK) {
	crm_err("Decompression failed: %d", rc);
	goto badmsg;
	}

	CRM_ASSERT(rc == BZ_OK);
	CRM_ASSERT(new_size == msg->size);

	data = uncompressed;

	} else if (check_message_sanity(msg, data) == FALSE) {
	goto badmsg;

	} else if (safe_str_eq("identify", data)) {
	int pid = getpid();
	char *pid_s = crm_itoa(pid);

	send_ais_text(crm_class_cluster, pid_s, TRUE, NULL, crm_msg_ais);
	free(pid_s);
	goto done;
	}

	if (msg->header.id != crm_class_members) {
	crm_update_peer(__FUNCTION__, msg->sender.id, 0, 0, 0, 0, msg->sender.uname, msg->sender.uname, NULL,
	NULL);
	}

	if (msg->header.id == crm_class_rmpeer) {
	uint32_t id = crm_int_helper(data, NULL);

	crm_info("Removing peer %s/%u", data, id);
	reap_crm_member(id);
	goto done;
	}

	crm_trace("Payload: %s", data);
	if (dispatch != NULL) {
	dispatch(msg, data, 0);
	}

	done:
	free(uncompressed);
	free_xml(xml);
	return TRUE;

	badmsg:
	crm_err("Invalid message (id=%d, dest=%s:%s, from=%s:%s.%d):"
	" min=%d, total=%d, size=%d, bz2_size=%d",
	msg->id, ais_dest(&(msg->host)), msg_type2text(msg->host.type),
	ais_dest(&(msg->sender)), msg_type2text(msg->sender.type),
	msg->sender.pid, (int)sizeof(AIS_Message),
	msg->header.size, msg->size, msg->compressed_size);
	goto done;
	}

	gboolean(pcmk_cpg_dispatch_fn) (AIS_Message , char *, int) = NULL;

	static int
	pcmk_cpg_dispatch(gpointer user_data)
	{
	int rc = 0;

	pcmk_cpg_dispatch_fn = user_data;
	rc = cpg_dispatch(pcmk_cpg_handle, CS_DISPATCH_ALL);
	if (rc != CS_OK) {
	crm_err("Connection to the CPG API failed: %d", rc);
	return -1;
	}
	return 0;
	}

	static void
	pcmk_cpg_deliver(cpg_handle_t handle,
	const struct cpg_name *groupName,
	uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len)
	{
	AIS_Message ais_msg = (AIS_Message ) msg;

	if (ais_msg->sender.id > 0 && ais_msg->sender.id != nodeid) {
	crm_err("Nodeid mismatch from %d.%d: claimed nodeid=%u", nodeid, pid, ais_msg->sender.id);
	return;

	} else if (ais_msg->host.size != 0 && safe_str_neq(ais_msg->host.uname, pcmk_uname)) {
	/* Not for us */
	return;
	}

	ais_msg->sender.id = nodeid;
	if (ais_msg->sender.size == 0) {
	crm_node_t *peer = crm_get_peer(nodeid, NULL);

	if (peer == NULL) {
	crm_err("Peer with nodeid=%u is unknown", nodeid);

	} else if (peer->uname == NULL) {
	crm_err("No uname for peer with nodeid=%u", nodeid);

	} else {
	crm_notice("Fixing uname for peer with nodeid=%u", nodeid);
	ais_msg->sender.size = strlen(peer->uname);
	memset(ais_msg->sender.uname, 0, MAX_NAME);
	memcpy(ais_msg->sender.uname, peer->uname, ais_msg->sender.size);
	}
	}

	ais_dispatch_message(ais_msg, pcmk_cpg_dispatch_fn);
	}

	static void
	pcmk_cpg_membership(cpg_handle_t handle,
	const struct cpg_name *groupName,
	const struct cpg_address *member_list, size_t member_list_entries,
	const struct cpg_address *left_list, size_t left_list_entries,
	const struct cpg_address *joined_list, size_t joined_list_entries)
	{
	int i;
	gboolean found = FALSE;
	static int counter = 0;

	for (i = 0; i < left_list_entries; i++) {
	crm_node_t *peer = crm_get_peer(left_list[i].nodeid, NULL);
	crm_info("Left[%d.%d] %s.%d ", counter, i, groupName->value, left_list[i].nodeid);
	crm_update_peer_proc(__FUNCTION__, peer, crm_proc_cpg, OFFLINESTATUS);
	}

	for (i = 0; i < joined_list_entries; i++) {
	crm_info("Joined[%d.%d] %s.%d ", counter, i, groupName->value, joined_list[i].nodeid);
	}

	for (i = 0; i < member_list_entries; i++) {
	crm_node_t *peer = crm_get_peer(member_list[i].nodeid, NULL);
	crm_info("Member[%d.%d] %s.%d ", counter, i, groupName->value, member_list[i].nodeid);
	crm_update_peer_proc(__FUNCTION__, peer, crm_proc_cpg, ONLINESTATUS);
	if(pcmk_nodeid == member_list[i].nodeid) {
	found = TRUE;
	}
	}

	if(!found) {
	crm_err("We're not part of CPG group %s anymore!", groupName->value);
	/* Possibly re-call cpg_join() */
	}

	counter++;
	}

	cpg_callbacks_t cpg_callbacks = {
	.cpg_deliver_fn = pcmk_cpg_deliver,
	.cpg_confchg_fn = pcmk_cpg_membership,
	};

	static gboolean
	init_cpg_connection(gboolean(dispatch) (AIS_Message , char , int), void (destroy) (gpointer),
	uint32_t * nodeid)
	{
	int rc = -1;
	int fd = 0;
	int retries = 0;
	crm_node_t *peer = NULL;
	struct mainloop_fd_callbacks cpg_fd_callbacks = {
	.dispatch = pcmk_cpg_dispatch,
	.destroy = destroy,
	};

	strcpy(pcmk_cpg_group.value, crm_system_name);
	pcmk_cpg_group.length = strlen(crm_system_name) + 1;

	cs_repeat(retries, 30, rc = cpg_initialize(&pcmk_cpg_handle, &cpg_callbacks));
	if (rc != CS_OK) {
	crm_err("Could not connect to the Cluster Process Group API: %d\n", rc);
	goto bail;
	}

	retries = 0;
	cs_repeat(retries, 30, rc = cpg_local_get(pcmk_cpg_handle, (unsigned int *)nodeid));
	if (rc != CS_OK) {
	crm_err("Could not get local node id from the CPG API");
	goto bail;
	}

	retries = 0;
	cs_repeat(retries, 30, rc = cpg_join(pcmk_cpg_handle, &pcmk_cpg_group));
	if (rc != CS_OK) {
	crm_err("Could not join the CPG group '%s': %d", crm_system_name, rc);
	goto bail;
	}

	rc = cpg_fd_get(pcmk_cpg_handle, &fd);
	if (rc != CS_OK) {
	crm_err("Could not obtain the CPG API connection: %d\n", rc);
	goto bail;
	}

	mainloop_add_fd("corosync-cpg", fd, dispatch, &cpg_fd_callbacks);

	bail:
	if (rc != CS_OK) {
	cpg_finalize(pcmk_cpg_handle);
	return FALSE;
	}

	peer = crm_get_peer(pcmk_nodeid, pcmk_uname);
	crm_update_peer_proc(__FUNCTION__, peer, crm_proc_cpg, ONLINESTATUS);
	return TRUE;
	}

	static int
	pcmk_quorum_dispatch(gpointer user_data)
	{
	int rc = 0;

	rc = quorum_dispatch(pcmk_quorum_handle, CS_DISPATCH_ALL);
	if (rc < 0) {
	crm_err("Connection to the Quorum API failed: %d", rc);
	return -1;
	}
	return 0;
	}

	static void
	corosync_mark_unseen_peer_dead(gpointer key, gpointer value, gpointer user_data)
	{
	int *seq = user_data;
	crm_node_t *node = value;

	if (node->last_seen != *seq && crm_str_eq(CRM_NODE_LOST, node->state, TRUE) == FALSE) {
	crm_notice("Node %d/%s was not seen in the previous transition", node->id, node->uname);
	crm_update_peer(__FUNCTION__, node->id, 0, 0, 0, 0, NULL, NULL, NULL, CRM_NODE_LOST);
	}
	}

	static void
	corosync_mark_node_unseen(gpointer key, gpointer value, gpointer user_data)
	{
	crm_node_t *node = value;

	node->last_seen = 0;
	}

	static void
	pcmk_quorum_notification(quorum_handle_t handle,
	uint32_t quorate,
	uint64_t ring_id, uint32_t view_list_entries, uint32_t * view_list)
	{
	int i;
	static gboolean init_phase = TRUE;

	if (quorate != crm_have_quorum) {
	crm_notice("Membership " U64T ": quorum %s (%lu)", ring_id,
	quorate ? "acquired" : "lost", (long unsigned int)view_list_entries);
	crm_have_quorum = quorate;

	} else {
	crm_info("Membership " U64T ": quorum %s (%lu)", ring_id,
	quorate ? "retained" : "still lost", (long unsigned int)view_list_entries);
	}

	if(view_list_entries == 0 && init_phase) {
	crm_info("Corosync membership is still forming, ignoring");
	return;
	}

	init_phase = FALSE;
	g_hash_table_foreach(crm_peer_cache, corosync_mark_node_unseen, NULL);

	for (i = 0; i < view_list_entries; i++) {
	uint32_t id = view_list[i];
	char *name = NULL;
	crm_node_t *node = NULL;
	char *uuid = get_corosync_uuid(id, NULL);

	crm_debug("Member[%d] %d ", i, id);

	node = crm_get_peer(id, NULL);
	if(node->uname == NULL) {
	crm_info("Obtaining name for new node %u", id);
	name = corosync_node_name(0, id);
	}

	crm_update_peer(__FUNCTION__, id, 0, ring_id, 0, 0, uuid, name, NULL, CRM_NODE_MEMBER);
	free(name);
	}

	crm_trace("Reaping unseen nodes...");
	g_hash_table_foreach(crm_peer_cache, corosync_mark_unseen_peer_dead, &ring_id);

	if (quorum_app_callback) {
	quorum_app_callback(ring_id, quorate);
	}
	}

	quorum_callbacks_t quorum_callbacks = {
	.quorum_notify_fn = pcmk_quorum_notification,
	};

	gboolean
	init_quorum_connection(gboolean(*dispatch) (unsigned long long, gboolean),
	void (*destroy) (gpointer))
	{
	int rc = -1;
	int fd = 0;
	int quorate = 0;
	uint32_t quorum_type = 0;
	struct mainloop_fd_callbacks quorum_fd_callbacks;
	quorum_fd_callbacks.dispatch = pcmk_quorum_dispatch;
	quorum_fd_callbacks.destroy = destroy;

	crm_debug("Configuring Pacemaker to obtain quorum from Corosync");

	rc = quorum_initialize(&pcmk_quorum_handle, &quorum_callbacks, &quorum_type);
	if (rc != CS_OK) {
	crm_err("Could not connect to the Quorum API: %d\n", rc);
	goto bail;

	} else if (quorum_type != QUORUM_SET) {
	crm_err("Corosync quorum is not configured\n");
	goto bail;
	}

	rc = quorum_getquorate(pcmk_quorum_handle, &quorate);
	if (rc != CS_OK) {
	crm_err("Could not obtain the current Quorum API state: %d\n", rc);
	goto bail;
	}

	crm_notice("Quorum %s", quorate ? "acquired" : "lost");
	quorum_app_callback = dispatch;
	crm_have_quorum = quorate;

	rc = quorum_trackstart(pcmk_quorum_handle, CS_TRACK_CHANGES \| CS_TRACK_CURRENT);
	if (rc != CS_OK) {
	crm_err("Could not setup Quorum API notifications: %d\n", rc);
	goto bail;
	}

	rc = quorum_fd_get(pcmk_quorum_handle, &fd);
	if (rc != CS_OK) {
	crm_err("Could not obtain the Quorum API connection: %d\n", rc);
	goto bail;
	}

	mainloop_add_fd("quorum", fd, dispatch, &quorum_fd_callbacks);

	corosync_initialize_nodelist(NULL, FALSE, NULL);

	bail:
	if (rc != CS_OK) {
	quorum_finalize(pcmk_quorum_handle);
	return FALSE;
	}
	return TRUE;
	}

	gboolean
	init_ais_connection(gboolean(dispatch) (AIS_Message , char , int), void (destroy) (gpointer),
	char our_uuid, char our_uname, int *nodeid)
	{
	int retries = 0;

	while (retries++ < 30) {
	int rc = init_ais_connection_once(dispatch, destroy, our_uuid, our_uname, nodeid);

	switch (rc) {
	case CS_OK:
	return TRUE;
	break;
	case CS_ERR_TRY_AGAIN:
	case CS_ERR_QUEUE_FULL:
	break;
	default:
	return FALSE;
	}
	}

	crm_err("Retry count exceeded: %d", retries);
	return FALSE;
	}

	gboolean
	init_ais_connection_once(gboolean(dispatch) (AIS_Message , char *, int),
	void (destroy) (gpointer), char our_uuid, char our_uname, int nodeid)
	{
	struct utsname res;
	enum cluster_type_e stack = get_cluster_type();

	crm_peer_init();

	/* Here we just initialize comms */
	if(stack != pcmk_cluster_corosync) {
	crm_err("Invalid cluster type: %s (%d)", name_for_cluster_type(stack), stack);
	return FALSE;
	}

	if (init_cpg_connection(dispatch, destroy, &pcmk_nodeid) == FALSE) {
	return FALSE;
	} else if (uname(&res) < 0) {
	crm_perror(LOG_ERR, "Could not determin the current host");
	exit(100);

	} else {
	pcmk_uname = strdup(res.nodename);
	}

	crm_info("Connection to '%s': established", name_for_cluster_type(stack));

	CRM_ASSERT(pcmk_uname != NULL);
	pcmk_uname_len = strlen(pcmk_uname);

	if (pcmk_nodeid != 0) {
	/* Ensure the local node always exists */
	crm_update_peer(__FUNCTION__, pcmk_nodeid, 0, 0, 0, 0, pcmk_uname, pcmk_uname, NULL, NULL);
	}

	if (our_uuid != NULL) {
	*our_uuid = get_corosync_uuid(pcmk_nodeid, pcmk_uname);
	}

	if (our_uname != NULL) {
	*our_uname = strdup(pcmk_uname);
	}

	if (nodeid != NULL) {
	*nodeid = pcmk_nodeid;
	}

	return TRUE;
	}

	gboolean
	check_message_sanity(const AIS_Message * msg, const char *data)
	{
	gboolean sane = TRUE;
	int dest = msg->host.type;
	int tmp_size = msg->header.size - sizeof(AIS_Message);

	if (sane && msg->header.size == 0) {
	crm_warn("Message with no size");
	sane = FALSE;
	}

	if (sane && msg->header.error != CS_OK) {
	crm_warn("Message header contains an error: %d", msg->header.error);
	sane = FALSE;
	}

	if (sane && ais_data_len(msg) != tmp_size) {
	crm_warn("Message payload size is incorrect: expected %d, got %d", ais_data_len(msg),
	tmp_size);
	sane = TRUE;
	}

	if (sane && ais_data_len(msg) == 0) {
	crm_warn("Message with no payload");
	sane = FALSE;
	}

	if (sane && data && msg->is_compressed == FALSE) {
	int str_size = strlen(data) + 1;

	if (ais_data_len(msg) != str_size) {
	int lpc = 0;

	crm_warn("Message payload is corrupted: expected %d bytes, got %d",
	ais_data_len(msg), str_size);
	sane = FALSE;
	for (lpc = (str_size - 10); lpc < msg->size; lpc++) {
	if (lpc < 0) {
	lpc = 0;
	}
	crm_debug("bad_data[%d]: %d / '%c'", lpc, data[lpc], data[lpc]);
	}
	}
	}

	if (sane == FALSE) {
	crm_err("Invalid message %d: (dest=%s:%s, from=%s:%s.%d, compressed=%d, size=%d, total=%d)",
	msg->id, ais_dest(&(msg->host)), msg_type2text(dest),
	ais_dest(&(msg->sender)), msg_type2text(msg->sender.type),
	msg->sender.pid, msg->is_compressed, ais_data_len(msg), msg->header.size);

	} else {
	crm_trace
	("Verfied message %d: (dest=%s:%s, from=%s:%s.%d, compressed=%d, size=%d, total=%d)",
	msg->id, ais_dest(&(msg->host)), msg_type2text(dest), ais_dest(&(msg->sender)),
	msg_type2text(msg->sender.type), msg->sender.pid, msg->is_compressed,
	ais_data_len(msg), msg->header.size);
	}

	return sane;
	}

	enum cluster_type_e
	find_corosync_variant(void)
	{
	int rc = CS_OK;
	cmap_handle_t handle;

	/* There can be only one (possibility if confdb isn't around) */
	rc = cmap_initialize(&handle);
	if (rc != CS_OK) {
	crm_info("Failed to initialize the cmap API. Error %d", rc);
	return pcmk_cluster_unknown;
	}

	cmap_finalize(handle);
	return pcmk_cluster_corosync;
	}

	gboolean
	crm_is_corosync_peer_active(const crm_node_t * node)
	{
	if (node == NULL) {
	crm_trace("NULL");
	return FALSE;

	} else if(safe_str_neq(node->state, CRM_NODE_MEMBER)) {
	crm_trace("%s: state=%s", node->uname, node->state);
	return FALSE;

	} else if((node->processes & crm_proc_cpg) == 0) {
	crm_trace("%s: processes=%.16x", node->uname, node->processes);
	return FALSE;
	}
	return TRUE;
	}

	gboolean
	corosync_initialize_nodelist(void cluster, gboolean force_member, xmlNode xml_parent)
	{
	int lpc = 0;
	int rc = CS_OK;
	int retries = 0;
	gboolean any = FALSE;
	cmap_handle_t cmap_handle;

	do {
	rc = cmap_initialize(&cmap_handle);
	if(rc != CS_OK) {
	retries++;
	crm_debug("API connection setup failed: %s. Retrying in %ds", cs_strerror(rc), retries);
	sleep(retries);
	}

	} while(retries < 5 && rc != CS_OK);

	if (rc != CS_OK) {
	crm_warn("Could not connect to Cluster Configuration Database API, error %d", rc);
	return FALSE;
	}

	crm_trace("Initializing corosync nodelist");
	for(lpc = 0; ; lpc++) {
	uint32_t nodeid = 0;
	char *name = NULL;
	char *key = NULL;

	key = g_strdup_printf("nodelist.node.%d.nodeid", lpc);
	rc = cmap_get_uint32(cmap_handle, key, &nodeid);
	g_free(key);

	if(rc != CS_OK) {
	break;
	}

	name = corosync_node_name(cmap_handle, nodeid);

	if(nodeid > 0 \|\| name != NULL) {
	crm_trace("Initializing node[%d] %u = %s", lpc, nodeid, name);
	crm_get_peer(nodeid, name);
	}

	if(nodeid > 0 && name != NULL) {
	any = TRUE;

	if(xml_parent) {
	xmlNode *node = create_xml_node(xml_parent, XML_CIB_TAG_NODE);
	crm_xml_add_int(node, XML_ATTR_ID, nodeid);
	crm_xml_add(node, XML_ATTR_UNAME, name);
	if(force_member) {
	crm_xml_add(node, XML_ATTR_TYPE, CRM_NODE_MEMBER);
	}
	}
	}

	free(name);
	}
	cmap_finalize(cmap_handle);
	return any;
	}

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