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	diff --git a/fencing/remote.c b/fencing/remote.c
	index 4e924c18a2..0e61cf9a18 100644
	--- a/fencing/remote.c
	+++ b/fencing/remote.c
	@@ -1,1638 +1,1688 @@
	/*
	* Copyright (C) 2009 Andrew Beekhof <andrew@beekhof.net>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This software 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
	* General Public License for more details.
	*
	* You should have received a copy of the GNU 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 <sys/param.h>
	#include <stdio.h>
	#include <sys/types.h>
	#include <sys/wait.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <sys/utsname.h>

	#include <stdlib.h>
	#include <errno.h>
	#include <fcntl.h>
	#include <ctype.h>
	#include <regex.h>

	#include <crm/crm.h>
	#include <crm/msg_xml.h>
	#include <crm/common/ipc.h>
	#include <crm/common/ipcs.h>
	#include <crm/cluster/internal.h>

	#include <crm/stonith-ng.h>
	#include <crm/fencing/internal.h>
	#include <crm/common/xml.h>

	#include <crm/common/util.h>
	#include <internal.h>

	#define TIMEOUT_MULTIPLY_FACTOR 1.2

	typedef struct st_query_result_s {
	char *host;
	int devices;
	/* only try peers for non-topology based operations once */
	gboolean tried;
	GListPtr device_list;
	GHashTable *custom_action_timeouts;
	GHashTable *delay_maxes;
	/* Subset of devices that peer has verified connectivity on */
	GHashTable *verified_devices;

	} st_query_result_t;

	GHashTable *remote_op_list = NULL;
	void call_remote_stonith(remote_fencing_op_t * op, st_query_result_t * peer);
	static void remote_op_done(remote_fencing_op_t * op, xmlNode * data, int rc, int dup);
	extern xmlNode stonith_create_op(int call_id, const char token, const char op, xmlNode data,
	int call_options);

	static void report_timeout_period(remote_fencing_op_t * op, int op_timeout);
	static int get_op_total_timeout(remote_fencing_op_t * op, st_query_result_t * chosen_peer,
	int default_timeout);

	static gint
	sort_strings(gconstpointer a, gconstpointer b)
	{
	return strcmp(a, b);
	}

	static void
	free_remote_query(gpointer data)
	{
	if (data) {
	st_query_result_t *query = data;

	crm_trace("Free'ing query result from %s", query->host);
	free(query->host);
	g_list_free_full(query->device_list, free);
	g_hash_table_destroy(query->custom_action_timeouts);
	g_hash_table_destroy(query->delay_maxes);
	g_hash_table_destroy(query->verified_devices);
	free(query);
	}
	}

	+/*!
	+ * \internal
	+ * \brief Check the number of available devices in a peer's query results
	+ *
	+ * \param[in] peer Peer to count
	+ * \param[in] verified_only Whether to count only verified devices
	+ *
	+ * \return Number of devices available to peer
	+ */
	+static int
	+count_peer_devices(const st_query_result_t *peer, gboolean verified_only)
	+{
	+ return verified_only? g_hash_table_size(peer->verified_devices)
	+ : g_list_length(peer->device_list);
	+}
	+
	+/*!
	+ * \internal
	+ * \brief Search for a device in a query result
	+ *
	+ * \param[in] peer Query result for a peer
	+ * \param[in] device Device ID to search for
	+ *
	+ * \return Device list entry if found, NULL otherwise
	+ */
	+static GListPtr
	+find_peer_device(const st_query_result_t peer, const char device)
	+{
	+ return g_list_find_custom(peer->device_list, device, sort_strings);
	+}
	+
	+/*!
	+ * \internal
	+ * \brief Remove a device from a peer's device list if it is present
	+ *
	+ * \param[in,out] peer Peer with results to search
	+ * \param[in] device ID of device to find and remove
	+ * \param[in] verified_devices_only Only consider verified devices
	+ *
	+ * \return TRUE if device was found and removed, FALSE otherwise
	+ */
	+static gboolean
	+grab_peer_device(st_query_result_t peer, const char device,
	+ gboolean verified_devices_only)
	+{
	+ GListPtr match;
	+
	+ if (verified_devices_only && !g_hash_table_lookup(peer->verified_devices, device)) {
	+ return FALSE;
	+ }
	+ match = find_peer_device(peer, device);
	+ if (match == NULL) {
	+ return FALSE;
	+ }
	+ crm_trace("Removing %s from %s (%d remaining)",
	+ device, peer->host, count_peer_devices(peer, FALSE));
	+ peer->device_list = g_list_remove(peer->device_list, match->data);
	+ return TRUE;
	+}
	+
	static void
	clear_remote_op_timers(remote_fencing_op_t * op)
	{
	if (op->query_timer) {
	g_source_remove(op->query_timer);
	op->query_timer = 0;
	}
	if (op->op_timer_total) {
	g_source_remove(op->op_timer_total);
	op->op_timer_total = 0;
	}
	if (op->op_timer_one) {
	g_source_remove(op->op_timer_one);
	op->op_timer_one = 0;
	}
	}

	static void
	free_remote_op(gpointer data)
	{
	remote_fencing_op_t *op = data;

	crm_trace("Free'ing op %s for %s", op->id, op->target);
	crm_log_xml_debug(op->request, "Destroying");

	clear_remote_op_timers(op);

	free(op->id);
	free(op->action);
	free(op->target);
	free(op->client_id);
	free(op->client_name);
	free(op->originator);

	if (op->query_results) {
	g_list_free_full(op->query_results, free_remote_query);
	}
	if (op->request) {
	free_xml(op->request);
	op->request = NULL;
	}
	if (op->devices_list) {
	g_list_free_full(op->devices_list, free);
	op->devices_list = NULL;
	}
	if (op->required_list) {
	g_list_free_full(op->required_list, free);
	op->required_list = NULL;
	}
	free(op);
	}

	static xmlNode *
	create_op_done_notify(remote_fencing_op_t * op, int rc)
	{
	xmlNode *notify_data = create_xml_node(NULL, T_STONITH_NOTIFY_FENCE);

	crm_xml_add_int(notify_data, "state", op->state);
	crm_xml_add_int(notify_data, F_STONITH_RC, rc);
	crm_xml_add(notify_data, F_STONITH_TARGET, op->target);
	crm_xml_add(notify_data, F_STONITH_ACTION, op->action);
	crm_xml_add(notify_data, F_STONITH_DELEGATE, op->delegate);
	crm_xml_add(notify_data, F_STONITH_REMOTE_OP_ID, op->id);
	crm_xml_add(notify_data, F_STONITH_ORIGIN, op->originator);
	crm_xml_add(notify_data, F_STONITH_CLIENTID, op->client_id);
	crm_xml_add(notify_data, F_STONITH_CLIENTNAME, op->client_name);

	return notify_data;
	}

	static void
	bcast_result_to_peers(remote_fencing_op_t * op, int rc)
	{
	static int count = 0;
	xmlNode *bcast = create_xml_node(NULL, T_STONITH_REPLY);
	xmlNode *notify_data = create_op_done_notify(op, rc);

	count++;
	crm_trace("Broadcasting result to peers");
	crm_xml_add(bcast, F_TYPE, T_STONITH_NOTIFY);
	crm_xml_add(bcast, F_SUBTYPE, "broadcast");
	crm_xml_add(bcast, F_STONITH_OPERATION, T_STONITH_NOTIFY);
	crm_xml_add_int(bcast, "count", count);
	add_message_xml(bcast, F_STONITH_CALLDATA, notify_data);
	send_cluster_message(NULL, crm_msg_stonith_ng, bcast, FALSE);
	free_xml(notify_data);
	free_xml(bcast);

	return;
	}

	static void
	handle_local_reply_and_notify(remote_fencing_op_t * op, xmlNode * data, int rc)
	{
	xmlNode *notify_data = NULL;
	xmlNode *reply = NULL;

	if (op->notify_sent == TRUE) {
	/* nothing to do */
	return;
	}

	/* Do notification with a clean data object */
	notify_data = create_op_done_notify(op, rc);
	crm_xml_add_int(data, "state", op->state);
	crm_xml_add(data, F_STONITH_TARGET, op->target);
	crm_xml_add(data, F_STONITH_OPERATION, op->action);

	reply = stonith_construct_reply(op->request, NULL, data, rc);
	crm_xml_add(reply, F_STONITH_DELEGATE, op->delegate);

	/* Send fencing OP reply to local client that initiated fencing */
	do_local_reply(reply, op->client_id, op->call_options & st_opt_sync_call, FALSE);

	/* bcast to all local clients that the fencing operation happend */
	do_stonith_notify(0, T_STONITH_NOTIFY_FENCE, rc, notify_data);

	/* mark this op as having notify's already sent */
	op->notify_sent = TRUE;
	free_xml(reply);
	free_xml(notify_data);
	}

	static void
	handle_duplicates(remote_fencing_op_t * op, xmlNode * data, int rc)
	{
	GListPtr iter = NULL;

	for (iter = op->duplicates; iter != NULL; iter = iter->next) {
	remote_fencing_op_t *other = iter->data;

	if (other->state == st_duplicate) {
	/* Ie. it hasn't timed out already */
	other->state = op->state;
	crm_debug("Peforming duplicate notification for %s@%s.%.8s = %s", other->client_name,
	other->originator, other->id, pcmk_strerror(rc));
	remote_op_done(other, data, rc, TRUE);

	} else {
	crm_err("Skipping duplicate notification for %s@%s - %d", other->client_name,
	other->originator, other->state);
	}
	}
	}

	/*!
	* \internal
	* \brief Finalize a remote operation.
	*
	* \description This function has two code paths.
	*
	* Path 1. This node is the owner of the operation and needs
	* to notify the cpg group via a broadcast as to the operation's
	* results.
	*
	* Path 2. The cpg broadcast is received. All nodes notify their local
	* stonith clients the operation results.
	*
	* So, The owner of the operation first notifies the cluster of the result,
	* and once that cpg notify is received back it notifies all the local clients.
	*
	* Nodes that are passive watchers of the operation will receive the
	* broadcast and only need to notify their local clients the operation finished.
	*
	* \param op, The fencing operation to finalize
	* \param data, The xml msg reply (if present) of the last delegated fencing
	* operation.
	* \param dup, Is this operation a duplicate, if so treat it a little differently
	* making sure the broadcast is not sent out.
	*/
	static void
	remote_op_done(remote_fencing_op_t * op, xmlNode * data, int rc, int dup)
	{
	int level = LOG_ERR;
	const char *subt = NULL;
	xmlNode *local_data = NULL;

	op->completed = time(NULL);
	clear_remote_op_timers(op);

	if (op->notify_sent == TRUE) {
	crm_err("Already sent notifications for '%s of %s by %s' (for=%s@%s.%.8s, state=%d): %s",
	op->action, op->target, op->delegate ? op->delegate : "<no-one>",
	op->client_name, op->originator, op->id, op->state, pcmk_strerror(rc));
	goto remote_op_done_cleanup;
	}

	if (!op->delegate && data) {
	xmlNode *ndata = get_xpath_object("//@" F_STONITH_DELEGATE, data, LOG_TRACE);
	if(ndata) {
	op->delegate = crm_element_value_copy(ndata, F_STONITH_DELEGATE);
	}
	}

	if (data == NULL) {
	data = create_xml_node(NULL, "remote-op");
	local_data = data;
	}

	/* Tell everyone the operation is done, we will continue
	* with doing the local notifications once we receive
	* the broadcast back. */
	subt = crm_element_value(data, F_SUBTYPE);
	if (dup == FALSE && safe_str_neq(subt, "broadcast")) {
	/* Defer notification until the bcast message arrives */
	bcast_result_to_peers(op, rc);
	goto remote_op_done_cleanup;
	}

	if (rc == pcmk_ok \|\| dup) {
	level = LOG_NOTICE;
	} else if (safe_str_neq(op->originator, stonith_our_uname)) {
	level = LOG_NOTICE;
	}

	do_crm_log(level,
	"Operation %s of %s by %s for %s@%s.%.8s: %s",
	op->action, op->target, op->delegate ? op->delegate : "<no-one>",
	op->client_name, op->originator, op->id, pcmk_strerror(rc));

	handle_local_reply_and_notify(op, data, rc);

	if (dup == FALSE) {
	handle_duplicates(op, data, rc);
	}

	/* Free non-essential parts of the record
	* Keep the record around so we can query the history
	*/
	if (op->query_results) {
	g_list_free_full(op->query_results, free_remote_query);
	op->query_results = NULL;
	}

	if (op->request) {
	free_xml(op->request);
	op->request = NULL;
	}

	remote_op_done_cleanup:
	free_xml(local_data);
	}

	static gboolean
	remote_op_watchdog_done(gpointer userdata)
	{
	remote_fencing_op_t *op = userdata;

	op->op_timer_one = 0;

	crm_notice("Remote %s operation on %s for %s.%8s assumed complete",
	op->action, op->target, op->client_name, op->id);
	op->state = st_done;
	remote_op_done(op, NULL, pcmk_ok, FALSE);
	return FALSE;
	}

	static gboolean
	remote_op_timeout_one(gpointer userdata)
	{
	remote_fencing_op_t *op = userdata;

	op->op_timer_one = 0;

	crm_notice("Remote %s operation on %s for %s.%8s timed out",
	op->action, op->target, op->client_name, op->id);
	call_remote_stonith(op, NULL);
	return FALSE;
	}

	static gboolean
	remote_op_timeout(gpointer userdata)
	{
	remote_fencing_op_t *op = userdata;

	op->op_timer_total = 0;

	if (op->state == st_done) {
	crm_debug("Action %s (%s) for %s (%s) already completed",
	op->action, op->id, op->target, op->client_name);
	return FALSE;
	}

	crm_debug("Action %s (%s) for %s (%s) timed out",
	op->action, op->id, op->target, op->client_name);
	op->state = st_failed;

	remote_op_done(op, NULL, -ETIME, FALSE);

	return FALSE;
	}

	static gboolean
	remote_op_query_timeout(gpointer data)
	{
	remote_fencing_op_t *op = data;

	op->query_timer = 0;
	if (op->state == st_done) {
	crm_debug("Operation %s for %s already completed", op->id, op->target);
	} else if (op->state == st_exec) {
	crm_debug("Operation %s for %s already in progress", op->id, op->target);
	} else if (op->query_results) {
	crm_debug("Query %s for %s complete: %d", op->id, op->target, op->state);
	call_remote_stonith(op, NULL);
	} else {
	crm_debug("Query %s for %s timed out: %d", op->id, op->target, op->state);
	if (op->op_timer_total) {
	g_source_remove(op->op_timer_total);
	op->op_timer_total = 0;
	}
	remote_op_timeout(op);
	}

	return FALSE;
	}

	static gboolean
	topology_is_empty(stonith_topology_t *tp)
	{
	int i;

	if (tp == NULL) {
	return TRUE;
	}

	for (i = 0; i < ST_LEVEL_MAX; i++) {
	if (tp->levels[i] != NULL) {
	return FALSE;
	}
	}
	return TRUE;
	}

	static void
	add_required_device(remote_fencing_op_t * op, const char *device)
	{
	GListPtr match = g_list_find_custom(op->required_list, device, sort_strings);
	if (match) {
	/* device already marked required */
	return;
	}
	op->required_list = g_list_prepend(op->required_list, strdup(device));

	/* make sure the required devices is in the current list of devices to be executed */
	if (op->devices_list) {
	GListPtr match = g_list_find_custom(op->devices_list, device, sort_strings);
	if (match == NULL) {
	op->devices_list = g_list_append(op->devices_list, strdup(device));
	}
	}
	}

	/* deep copy the device list */
	static void
	set_op_device_list(remote_fencing_op_t * op, GListPtr devices)
	{
	GListPtr lpc = NULL;

	if (op->devices_list) {
	g_list_free_full(op->devices_list, free);
	op->devices_list = NULL;
	}
	for (lpc = devices; lpc != NULL; lpc = lpc->next) {
	op->devices_list = g_list_append(op->devices_list, strdup(lpc->data));
	}

	/* tack on whatever required devices have not been executed
	* to the end of the current devices list. This ensures that
	* the required devices will get executed regardless of what topology
	* level they exist at. */
	for (lpc = op->required_list; lpc != NULL; lpc = lpc->next) {
	GListPtr match = g_list_find_custom(op->devices_list, lpc->data, sort_strings);
	if (match == NULL) {
	op->devices_list = g_list_append(op->devices_list, strdup(lpc->data));
	}
	}

	op->devices = op->devices_list;
	}

	stonith_topology_t *
	find_topology_for_host(const char *host)
	{
	stonith_topology_t *tp = g_hash_table_lookup(topology, host);

	if(tp == NULL) {
	int status = 1;
	regex_t r_patt;
	GHashTableIter tIter;

	crm_trace("Testing %d topologies for a match", g_hash_table_size(topology));
	g_hash_table_iter_init(&tIter, topology);
	while (g_hash_table_iter_next(&tIter, NULL, (gpointer *) & tp)) {

	if (regcomp(&r_patt, tp->node, REG_EXTENDED)) {
	crm_info("Bad regex '%s' for fencing level", tp->node);
	} else {
	status = regexec(&r_patt, host, 0, NULL, 0);
	}

	if (status == 0) {
	crm_notice("Matched %s with %s", host, tp->node);
	break;
	}
	crm_trace("No match for %s with %s", host, tp->node);
	tp = NULL;
	}
	}

	return tp;
	}

	/*!
	* \internal
	* \brief Set fencing operation's device list to target's next topology level
	*
	* \param[in,out] op Remote fencing operation to modify
	*
	* \return pcmk_ok if successful, target was not specified (i.e. queries) or
	* target has no topology, or -EINVAL if no more topology levels to try
	*/
	static int
	stonith_topology_next(remote_fencing_op_t * op)
	{
	stonith_topology_t *tp = NULL;

	if (op->target) {
	/* Queries don't have a target set */
	tp = find_topology_for_host(op->target);
	}
	if (topology_is_empty(tp)) {
	return pcmk_ok;
	}

	set_bit(op->call_options, st_opt_topology);

	do {
	op->level++;

	} while (op->level < ST_LEVEL_MAX && tp->levels[op->level] == NULL);

	if (op->level < ST_LEVEL_MAX) {
	crm_trace("Attempting fencing level %d for %s (%d devices) - %s@%s.%.8s",
	op->level, op->target, g_list_length(tp->levels[op->level]),
	op->client_name, op->originator, op->id);
	set_op_device_list(op, tp->levels[op->level]);
	return pcmk_ok;
	}

	crm_notice("All fencing options to fence %s for %s@%s.%.8s failed",
	op->target, op->client_name, op->originator, op->id);
	return -EINVAL;
	}

	/*!
	* \brief Check to see if this operation is a duplicate of another in flight
	* operation. If so merge this operation into the inflight operation, and mark
	* it as a duplicate.
	*/
	static void
	merge_duplicates(remote_fencing_op_t * op)
	{
	GHashTableIter iter;
	remote_fencing_op_t *other = NULL;

	time_t now = time(NULL);

	g_hash_table_iter_init(&iter, remote_op_list);
	while (g_hash_table_iter_next(&iter, NULL, (void **)&other)) {
	crm_node_t *peer = NULL;

	if (other->state > st_exec) {
	/* Must be in-progress */
	continue;
	} else if (safe_str_neq(op->target, other->target)) {
	/* Must be for the same node */
	continue;
	} else if (safe_str_neq(op->action, other->action)) {
	crm_trace("Must be for the same action: %s vs. ", op->action, other->action);
	continue;
	} else if (safe_str_eq(op->client_name, other->client_name)) {
	crm_trace("Must be for different clients: %s", op->client_name);
	continue;
	} else if (safe_str_eq(other->target, other->originator)) {
	crm_trace("Can't be a suicide operation: %s", other->target);
	continue;
	}

	peer = crm_get_peer(0, other->originator);
	if(fencing_peer_active(peer) == FALSE) {
	crm_notice("Failing stonith action %s for node %s originating from %s@%s.%.8s: Originator is dead",
	other->action, other->target, other->client_name, other->originator, other->id);
	other->state = st_failed;
	continue;

	} else if(other->total_timeout > 0 && now > (other->total_timeout + other->created)) {
	crm_info("Stonith action %s for node %s originating from %s@%s.%.8s is too old: %d vs. %d + %d",
	other->action, other->target, other->client_name, other->originator, other->id,
	now, other->created, other->total_timeout);
	continue;
	}

	/* There is another in-flight request to fence the same host
	* Piggyback on that instead. If it fails, so do we.
	*/
	other->duplicates = g_list_append(other->duplicates, op);
	if (other->total_timeout == 0) {
	crm_trace("Making a best-guess as to the timeout used");
	other->total_timeout = op->total_timeout =
	TIMEOUT_MULTIPLY_FACTOR * get_op_total_timeout(op, NULL, op->base_timeout);
	}
	crm_notice
	("Merging stonith action %s for node %s originating from client %s.%.8s with identical request from %s@%s.%.8s (%ds)",
	op->action, op->target, op->client_name, op->id, other->client_name, other->originator,
	other->id, other->total_timeout);
	report_timeout_period(op, other->total_timeout);
	op->state = st_duplicate;
	}
	}

	static uint32_t fencing_active_peers(void)
	{
	uint32_t count = 0;
	crm_node_t *entry;
	GHashTableIter gIter;

	g_hash_table_iter_init(&gIter, crm_peer_cache);
	while (g_hash_table_iter_next(&gIter, NULL, (void **)&entry)) {
	if(fencing_peer_active(entry)) {
	count++;
	}
	}
	return count;
	}

	int
	stonith_manual_ack(xmlNode * msg, remote_fencing_op_t * op)
	{
	xmlNode *dev = get_xpath_object("//@" F_STONITH_TARGET, msg, LOG_ERR);

	op->state = st_done;
	op->completed = time(NULL);
	op->delegate = strdup("a human");

	crm_notice("Injecting manual confirmation that %s is safely off/down",
	crm_element_value(dev, F_STONITH_TARGET));

	remote_op_done(op, msg, pcmk_ok, FALSE);

	/* Replies are sent via done_cb->stonith_send_async_reply()->do_local_reply() */
	return -EINPROGRESS;
	}

	/*!
	* \internal
	* \brief Create a new remote stonith op
	* \param client, he local stonith client id that initaited the operation
	* \param request, The request from the client that started the operation
	* \param peer, Is this operation owned by another stonith peer? Operations
	* owned by other peers are stored on all the stonith nodes, but only the
	* owner executes the operation. All the nodes get the results to the operation
	* once the owner finishes executing it.
	*/
	void *
	create_remote_stonith_op(const char client, xmlNode request, gboolean peer)
	{
	remote_fencing_op_t *op = NULL;
	xmlNode *dev = get_xpath_object("//@" F_STONITH_TARGET, request, LOG_TRACE);
	int call_options = 0;

	if (remote_op_list == NULL) {
	remote_op_list = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, free_remote_op);
	}

	/* If this operation is owned by another node, check to make
	* sure we haven't already created this operation. */
	if (peer && dev) {
	const char *op_id = crm_element_value(dev, F_STONITH_REMOTE_OP_ID);

	CRM_CHECK(op_id != NULL, return NULL);

	op = g_hash_table_lookup(remote_op_list, op_id);
	if (op) {
	crm_debug("%s already exists", op_id);
	return op;
	}
	}

	op = calloc(1, sizeof(remote_fencing_op_t));

	crm_element_value_int(request, F_STONITH_TIMEOUT, (int *)&(op->base_timeout));

	if (peer && dev) {
	op->id = crm_element_value_copy(dev, F_STONITH_REMOTE_OP_ID);
	} else {
	op->id = crm_generate_uuid();
	}

	g_hash_table_replace(remote_op_list, op->id, op);
	CRM_LOG_ASSERT(g_hash_table_lookup(remote_op_list, op->id) != NULL);
	crm_trace("Created %s", op->id);

	op->state = st_query;
	op->replies_expected = fencing_active_peers();
	op->action = crm_element_value_copy(dev, F_STONITH_ACTION);
	op->originator = crm_element_value_copy(dev, F_STONITH_ORIGIN);
	op->delegate = crm_element_value_copy(dev, F_STONITH_DELEGATE); /* May not be set */
	op->created = time(NULL);

	if (op->originator == NULL) {
	/* Local or relayed request */
	op->originator = strdup(stonith_our_uname);
	}

	CRM_LOG_ASSERT(client != NULL);
	if (client) {
	op->client_id = strdup(client);
	}

	op->client_name = crm_element_value_copy(request, F_STONITH_CLIENTNAME);

	op->target = crm_element_value_copy(dev, F_STONITH_TARGET);
	op->request = copy_xml(request); /* TODO: Figure out how to avoid this */
	crm_element_value_int(request, F_STONITH_CALLOPTS, &call_options);
	op->call_options = call_options;

	crm_element_value_int(request, F_STONITH_CALLID, (int *)&(op->client_callid));

	crm_trace("%s new stonith op: %s - %s of %s for %s",
	(peer
	&& dev) ? "Recorded" : "Generated", op->id, op->action, op->target, op->client_name);

	if (op->call_options & st_opt_cs_nodeid) {
	int nodeid = crm_atoi(op->target, NULL);
	crm_node_t *node = crm_get_peer(nodeid, NULL);

	/* Ensure the conversion only happens once */
	op->call_options &= ~st_opt_cs_nodeid;

	if (node && node->uname) {
	free(op->target);
	op->target = strdup(node->uname);
	} else {
	crm_warn("Could not expand nodeid '%s' into a host name (%p)", op->target, node);
	}
	}

	/* check to see if this is a duplicate operation of another in-flight operation */
	merge_duplicates(op);

	return op;
	}

	remote_fencing_op_t *
	initiate_remote_stonith_op(crm_client_t * client, xmlNode * request, gboolean manual_ack)
	{
	int query_timeout = 0;
	xmlNode *query = NULL;
	const char *client_id = NULL;
	remote_fencing_op_t *op = NULL;

	if (client) {
	client_id = client->id;
	} else {
	client_id = crm_element_value(request, F_STONITH_CLIENTID);
	}

	CRM_LOG_ASSERT(client_id != NULL);
	op = create_remote_stonith_op(client_id, request, FALSE);
	op->owner = TRUE;
	if (manual_ack) {
	crm_notice("Initiating manual confirmation for %s: %s",
	op->target, op->id);
	return op;
	}

	CRM_CHECK(op->action, return NULL);

	if (stonith_topology_next(op) != pcmk_ok) {
	op->state = st_failed;
	}

	switch (op->state) {
	case st_failed:
	crm_warn("Initiation of remote operation %s for %s: failed (%s)", op->action,
	op->target, op->id);
	remote_op_done(op, NULL, -EINVAL, FALSE);
	return op;

	case st_duplicate:
	crm_info("Initiating remote operation %s for %s: %s (duplicate)", op->action,
	op->target, op->id);
	return op;

	default:
	crm_notice("Initiating remote operation %s for %s: %s (%d)", op->action, op->target,
	op->id, op->state);
	}

	query = stonith_create_op(op->client_callid, op->id, STONITH_OP_QUERY,
	NULL, op->call_options);

	crm_xml_add(query, F_STONITH_REMOTE_OP_ID, op->id);
	crm_xml_add(query, F_STONITH_TARGET, op->target);
	crm_xml_add(query, F_STONITH_ACTION, op->action);
	crm_xml_add(query, F_STONITH_ORIGIN, op->originator);
	crm_xml_add(query, F_STONITH_CLIENTID, op->client_id);
	crm_xml_add(query, F_STONITH_CLIENTNAME, op->client_name);
	crm_xml_add_int(query, F_STONITH_TIMEOUT, op->base_timeout);

	send_cluster_message(NULL, crm_msg_stonith_ng, query, FALSE);
	free_xml(query);

	query_timeout = op->base_timeout * TIMEOUT_MULTIPLY_FACTOR;
	op->query_timer = g_timeout_add((1000 * query_timeout), remote_op_query_timeout, op);

	return op;
	}

	enum find_best_peer_options {
	/! Skip checking the target peer for capable fencing devices /
	FIND_PEER_SKIP_TARGET = 0x0001,
	/! Only check the target peer for capable fencing devices /
	FIND_PEER_TARGET_ONLY = 0x0002,
	/! Skip peers and devices that are not verified /
	FIND_PEER_VERIFIED_ONLY = 0x0004,
	};

	static st_query_result_t *
	find_best_peer(const char device, remote_fencing_op_t op, enum find_best_peer_options options)
	{
	GListPtr iter = NULL;
	gboolean verified_devices_only = (options & FIND_PEER_VERIFIED_ONLY) ? TRUE : FALSE;

	if (!device && is_set(op->call_options, st_opt_topology)) {
	return NULL;
	}

	for (iter = op->query_results; iter != NULL; iter = iter->next) {
	st_query_result_t *peer = iter->data;

	crm_trace("Testing result from %s for %s with %d devices: %d %x",
	peer->host, op->target, peer->devices, peer->tried, options);
	if ((options & FIND_PEER_SKIP_TARGET) && safe_str_eq(peer->host, op->target)) {
	continue;
	}
	if ((options & FIND_PEER_TARGET_ONLY) && safe_str_neq(peer->host, op->target)) {
	continue;
	}

	if (is_set(op->call_options, st_opt_topology)) {
	- /* Do they have the next device of the current fencing level? */
	- GListPtr match = NULL;

	- if (verified_devices_only && !g_hash_table_lookup(peer->verified_devices, device)) {
	- continue;
	- }
	-
	- match = g_list_find_custom(peer->device_list, device, sort_strings);
	- if (match) {
	- crm_trace("Removing %s from %s (%d remaining)", (char *)match->data, peer->host,
	- g_list_length(peer->device_list));
	- peer->device_list = g_list_remove(peer->device_list, match->data);
	+ if (grab_peer_device(peer, device, verified_devices_only)) {
	return peer;
	}

	- } else if (peer->devices > 0 && peer->tried == FALSE) {
	- if (verified_devices_only && !g_hash_table_size(peer->verified_devices)) {
	- continue;
	- }
	+ } else if ((peer->tried == FALSE)
	+ && count_peer_devices(peer, verified_devices_only)) {

	/* No topology: Use the current best peer */
	crm_trace("Simple fencing");
	return peer;
	}
	}

	return NULL;
	}

	static st_query_result_t *
	stonith_choose_peer(remote_fencing_op_t * op)
	{
	const char *device = NULL;
	st_query_result_t *peer = NULL;
	uint32_t active = fencing_active_peers();

	do {
	if (op->devices) {
	device = op->devices->data;
	crm_trace("Checking for someone to fence %s with %s", op->target, device);
	} else {
	crm_trace("Checking for someone to fence %s", op->target);
	}

	peer = find_best_peer(device, op, FIND_PEER_SKIP_TARGET\|FIND_PEER_VERIFIED_ONLY);
	if (peer) {
	crm_trace("Found verified peer %s for %s", peer->host, device?device:"<any>");
	return peer;
	}

	if(op->query_timer != 0 && op->replies < QB_MIN(op->replies_expected, active)) {
	crm_trace("Waiting before looking for unverified devices to fence %s", op->target);
	return NULL;
	}

	peer = find_best_peer(device, op, FIND_PEER_SKIP_TARGET);
	if (peer) {
	crm_trace("Found best unverified peer %s", peer->host);
	return peer;
	}

	peer = find_best_peer(device, op, FIND_PEER_TARGET_ONLY);
	if(peer) {
	crm_trace("%s will fence itself", peer->host);
	return peer;
	}

	/* Try the next fencing level if there is one */
	} while (is_set(op->call_options, st_opt_topology)
	&& stonith_topology_next(op) == pcmk_ok);

	crm_notice("Couldn't find anyone to fence %s with %s", op->target, device?device:"<any>");
	return NULL;
	}

	static int
	get_device_timeout(st_query_result_t * peer, const char *device, int default_timeout)
	{
	gpointer res;
	int delay_max = 0;

	if (!peer \|\| !device) {
	return default_timeout;
	}

	res = g_hash_table_lookup(peer->delay_maxes, device);
	if (res && GPOINTER_TO_INT(res) > 0) {
	delay_max = GPOINTER_TO_INT(res);
	}

	res = g_hash_table_lookup(peer->custom_action_timeouts, device);

	return res ? GPOINTER_TO_INT(res) + delay_max : default_timeout + delay_max;
	}

	static int
	get_peer_timeout(st_query_result_t * peer, int default_timeout)
	{
	int total_timeout = 0;

	GListPtr cur = NULL;

	for (cur = peer->device_list; cur; cur = cur->next) {
	total_timeout += get_device_timeout(peer, cur->data, default_timeout);
	}

	return total_timeout ? total_timeout : default_timeout;
	}

	static int
	get_op_total_timeout(remote_fencing_op_t * op, st_query_result_t * chosen_peer, int default_timeout)
	{
	int total_timeout = 0;
	stonith_topology_t *tp = find_topology_for_host(op->target);

	if (is_set(op->call_options, st_opt_topology) && tp) {
	int i;
	GListPtr device_list = NULL;
	GListPtr iter = NULL;

	/* Yep, this looks scary, nested loops all over the place.
	* Here is what is going on.
	* Loop1: Iterate through fencing levels.
	* Loop2: If a fencing level has devices, loop through each device
	* Loop3: For each device in a fencing level, see what peer owns it
	* and what that peer has reported the timeout is for the device.
	*/
	for (i = 0; i < ST_LEVEL_MAX; i++) {
	if (!tp->levels[i]) {
	continue;
	}
	for (device_list = tp->levels[i]; device_list; device_list = device_list->next) {
	for (iter = op->query_results; iter != NULL; iter = iter->next) {
	st_query_result_t *peer = iter->data;

	- if (g_list_find_custom(peer->device_list, device_list->data, sort_strings)) {
	+ if (find_peer_device(peer, device_list->data)) {
	total_timeout +=
	get_device_timeout(peer, device_list->data, default_timeout);
	break;
	}
	} /* End Loop3: match device with peer that owns device, find device's timeout period */
	} /* End Loop2: iterate through devices at a specific level */
	} /End Loop1: iterate through fencing levels /

	} else if (chosen_peer) {
	total_timeout = get_peer_timeout(chosen_peer, default_timeout);
	} else {
	total_timeout = default_timeout;
	}

	return total_timeout ? total_timeout : default_timeout;
	}

	static void
	report_timeout_period(remote_fencing_op_t * op, int op_timeout)
	{
	GListPtr iter = NULL;
	xmlNode *update = NULL;
	const char *client_node = NULL;
	const char *client_id = NULL;
	const char *call_id = NULL;

	if (op->call_options & st_opt_sync_call) {
	/* There is no reason to report the timeout for a syncronous call. It
	* is impossible to use the reported timeout to do anything when the client
	* is blocking for the response. This update is only important for
	* async calls that require a callback to report the results in. */
	return;
	} else if (!op->request) {
	return;
	}

	crm_trace("Reporting timeout for %s.%.8s", op->client_name, op->id);
	client_node = crm_element_value(op->request, F_STONITH_CLIENTNODE);
	call_id = crm_element_value(op->request, F_STONITH_CALLID);
	client_id = crm_element_value(op->request, F_STONITH_CLIENTID);
	if (!client_node \|\| !call_id \|\| !client_id) {
	return;
	}

	if (safe_str_eq(client_node, stonith_our_uname)) {
	/* The client is connected to this node, send the update direclty to them */
	do_stonith_async_timeout_update(client_id, call_id, op_timeout);
	return;
	}

	/* The client is connected to another node, relay this update to them */
	update = stonith_create_op(op->client_callid, op->id, STONITH_OP_TIMEOUT_UPDATE, NULL, 0);
	crm_xml_add(update, F_STONITH_REMOTE_OP_ID, op->id);
	crm_xml_add(update, F_STONITH_CLIENTID, client_id);
	crm_xml_add(update, F_STONITH_CALLID, call_id);
	crm_xml_add_int(update, F_STONITH_TIMEOUT, op_timeout);

	send_cluster_message(crm_get_peer(0, client_node), crm_msg_stonith_ng, update, FALSE);

	free_xml(update);

	for (iter = op->duplicates; iter != NULL; iter = iter->next) {
	remote_fencing_op_t *dup = iter->data;

	crm_trace("Reporting timeout for duplicate %s.%.8s", dup->client_name, dup->id);
	report_timeout_period(iter->data, op_timeout);
	}
	}

	void
	call_remote_stonith(remote_fencing_op_t * op, st_query_result_t * peer)
	{
	const char *device = NULL;
	int timeout = op->base_timeout;

	crm_trace("State for %s.%.8s: %s %d", op->target, op->client_name, op->id, op->state);
	if (peer == NULL && !is_set(op->call_options, st_opt_topology)) {
	peer = stonith_choose_peer(op);
	}

	if (!op->op_timer_total) {
	int total_timeout = get_op_total_timeout(op, peer, op->base_timeout);

	op->total_timeout = TIMEOUT_MULTIPLY_FACTOR * total_timeout;
	op->op_timer_total = g_timeout_add(1000 * op->total_timeout, remote_op_timeout, op);
	report_timeout_period(op, op->total_timeout);
	crm_info("Total remote op timeout set to %d for fencing of node %s for %s.%.8s",
	total_timeout, op->target, op->client_name, op->id);
	}

	if (is_set(op->call_options, st_opt_topology) && op->devices) {
	/* Ignore any preference, they might not have the device we need */
	/* When using topology, the stonith_choose_peer function pops off
	* the peer from the op's query results. Make sure to calculate
	* the op_timeout before calling this function when topology is in use */
	peer = stonith_choose_peer(op);
	device = op->devices->data;
	timeout = get_device_timeout(peer, device, op->base_timeout);
	}

	if (peer) {
	int timeout_one = 0;
	xmlNode *remote_op = stonith_create_op(op->client_callid, op->id, STONITH_OP_FENCE, NULL, 0);

	crm_xml_add(remote_op, F_STONITH_REMOTE_OP_ID, op->id);
	crm_xml_add(remote_op, F_STONITH_TARGET, op->target);
	crm_xml_add(remote_op, F_STONITH_ACTION, op->action);
	crm_xml_add(remote_op, F_STONITH_ORIGIN, op->originator);
	crm_xml_add(remote_op, F_STONITH_CLIENTID, op->client_id);
	crm_xml_add(remote_op, F_STONITH_CLIENTNAME, op->client_name);
	crm_xml_add_int(remote_op, F_STONITH_TIMEOUT, timeout);
	crm_xml_add_int(remote_op, F_STONITH_CALLOPTS, op->call_options);

	if (device) {
	timeout_one =
	TIMEOUT_MULTIPLY_FACTOR * get_device_timeout(peer, device, op->base_timeout);
	crm_info("Requesting that %s perform op %s %s with %s for %s (%ds)", peer->host,
	op->action, op->target, device, op->client_name, timeout_one);
	crm_xml_add(remote_op, F_STONITH_DEVICE, device);
	crm_xml_add(remote_op, F_STONITH_MODE, "slave");

	} else {
	timeout_one = TIMEOUT_MULTIPLY_FACTOR * get_peer_timeout(peer, op->base_timeout);
	crm_info("Requesting that %s perform op %s %s for %s (%ds, %ds)",
	peer->host, op->action, op->target, op->client_name, timeout_one, stonith_watchdog_timeout_ms);
	crm_xml_add(remote_op, F_STONITH_MODE, "smart");

	}

	op->state = st_exec;
	if (op->op_timer_one) {
	g_source_remove(op->op_timer_one);
	}

	if(stonith_watchdog_timeout_ms > 0 && device && safe_str_eq(device, "watchdog")) {
	crm_notice("Waiting %ds for %s to self-terminate for %s.%.8s (%p)",
	stonith_watchdog_timeout_ms/1000, op->target, op->client_name, op->id, device);
	op->op_timer_one = g_timeout_add(stonith_watchdog_timeout_ms, remote_op_watchdog_done, op);

	/* TODO: We should probably look into peer->device_list to verify watchdog is going to be in use */
	} else if(stonith_watchdog_timeout_ms > 0
	&& safe_str_eq(peer->host, op->target)
	&& safe_str_neq(op->action, "on")) {
	crm_notice("Waiting %ds for %s to self-terminate for %s.%.8s (%p)",
	stonith_watchdog_timeout_ms/1000, op->target, op->client_name, op->id, device);
	op->op_timer_one = g_timeout_add(stonith_watchdog_timeout_ms, remote_op_watchdog_done, op);

	} else {
	op->op_timer_one = g_timeout_add((1000 * timeout_one), remote_op_timeout_one, op);
	}


	send_cluster_message(crm_get_peer(0, peer->host), crm_msg_stonith_ng, remote_op, FALSE);
	peer->tried = TRUE;
	free_xml(remote_op);
	return;

	} else if (op->owner == FALSE) {
	crm_err("The termination of %s for %s is not ours to control", op->target, op->client_name);

	} else if (op->query_timer == 0) {
	/* We've exhausted all available peers */
	crm_info("No remaining peers capable of terminating %s for %s (%d)", op->target,
	op->client_name, op->state);
	CRM_LOG_ASSERT(op->state < st_done);
	remote_op_timeout(op);

	} else if(op->replies >= op->replies_expected \|\| op->replies >= fencing_active_peers()) {
	int rc = -EHOSTUNREACH;

	/* if the operation never left the query state,
	* but we have all the expected replies, then no devices
	* are available to execute the fencing operation. */
	if(stonith_watchdog_timeout_ms && (device == NULL \|\| safe_str_eq(device, "watchdog"))) {
	crm_notice("Waiting %ds for %s to self-terminate for %s.%.8s (%p)",
	stonith_watchdog_timeout_ms/1000, op->target, op->client_name, op->id, device);

	op->op_timer_one = g_timeout_add(stonith_watchdog_timeout_ms, remote_op_watchdog_done, op);
	return;
	}

	if (op->state == st_query) {
	crm_info("None of the %d peers have devices capable of terminating %s for %s (%d)",
	op->replies, op->target, op->client_name, op->state);

	rc = -ENODEV;
	} else {
	crm_info("None of the %d peers are capable of terminating %s for %s (%d)",
	op->replies, op->target, op->client_name, op->state);
	}

	op->state = st_failed;
	remote_op_done(op, NULL, rc, FALSE);

	} else if (device) {
	crm_info("Waiting for additional peers capable of terminating %s with %s for %s.%.8s",
	op->target, device, op->client_name, op->id);
	} else {
	crm_info("Waiting for additional peers capable of terminating %s for %s%.8s",
	op->target, op->client_name, op->id);
	}
	}

	/*!
	* \internal
	* \brief Comparison function for sorting query results
	*
	* \param[in] a GList item to compare
	* \param[in] b GList item to compare
	*
	* \return Per the glib documentation, "a negative integer if the first value
	* comes before the second, 0 if they are equal, or a positive integer
	* if the first value comes after the second."
	*/
	static gint
	sort_peers(gconstpointer a, gconstpointer b)
	{
	const st_query_result_t *peer_a = a;
	const st_query_result_t *peer_b = b;

	return (peer_b->devices - peer_a->devices);
	}

	/*!
	* \internal
	* \brief Determine if all the devices in the topology are found or not
	*/
	static gboolean
	all_topology_devices_found(remote_fencing_op_t * op)
	{
	GListPtr device = NULL;
	GListPtr iter = NULL;
	GListPtr match = NULL;
	stonith_topology_t *tp = NULL;
	gboolean skip_target = FALSE;
	int i;

	tp = find_topology_for_host(op->target);
	if (!tp) {
	return FALSE;
	}
	if (safe_str_eq(op->action, "off") \|\| safe_str_eq(op->action, "reboot")) {
	/* Don't count the devices on the target node if we are killing
	* the target node. */
	skip_target = TRUE;
	}

	for (i = 0; i < ST_LEVEL_MAX; i++) {
	for (device = tp->levels[i]; device; device = device->next) {
	match = NULL;
	for (iter = op->query_results; iter && !match; iter = iter->next) {
	st_query_result_t *peer = iter->data;

	if (skip_target && safe_str_eq(peer->host, op->target)) {
	continue;
	}
	- match = g_list_find_custom(peer->device_list, device->data, sort_strings);
	+ match = find_peer_device(peer, device->data);
	}
	if (!match) {
	return FALSE;
	}
	}
	}

	return TRUE;
	}

	/*
	* \internal
	* \brief Parse action-specific device properties from XML
	*
	* \param[in] msg XML element containing the properties
	* \param[in] peer Name of peer that sent XML (for logs)
	* \param[in] device Device ID (for logs)
	* \param[in] action Action the properties relate to
	* \param[in,out] values 3-integer array to contain timeout, delay, required
	*/
	static void
	parse_action_specific(xmlNode xml, const char peer, const char *device,
	const char action, int values)
	{
	values[0] = 0;
	crm_element_value_int(xml, F_STONITH_ACTION_TIMEOUT, &values[0]);
	if (values[0]) {
	crm_trace("Peer %s with device %s returned %s action timeout %d",
	peer, device, action, values[0]);
	}

	values[1] = 0;
	crm_element_value_int(xml, F_STONITH_DELAY_MAX, &values[1]);
	if (values[1]) {
	crm_trace("Peer %s with device %s returned maximum of random delay %d for %s",
	peer, device, values[1], action);
	}

	values[2] = 0;
	crm_element_value_int(xml, F_STONITH_DEVICE_REQUIRED, &values[2]);
	if (values[2]) {
	crm_trace("Peer %s requires device %s to execute for action %s",
	peer, device, action);
	}
	}

	int
	process_remote_stonith_query(xmlNode * msg)
	{
	int devices = 0;
	gboolean host_is_target = FALSE;
	gboolean have_all_replies = FALSE;
	const char *id = NULL;
	const char *host = NULL;
	remote_fencing_op_t *op = NULL;
	st_query_result_t *result = NULL;
	uint32_t replies_expected;
	xmlNode *dev = get_xpath_object("//@" F_STONITH_REMOTE_OP_ID, msg, LOG_ERR);
	xmlNode *child = NULL;

	CRM_CHECK(dev != NULL, return -EPROTO);

	id = crm_element_value(dev, F_STONITH_REMOTE_OP_ID);
	CRM_CHECK(id != NULL, return -EPROTO);

	dev = get_xpath_object("//@" F_STONITH_AVAILABLE_DEVICES, msg, LOG_ERR);
	CRM_CHECK(dev != NULL, return -EPROTO);
	crm_element_value_int(dev, F_STONITH_AVAILABLE_DEVICES, &devices);

	op = g_hash_table_lookup(remote_op_list, id);
	if (op == NULL) {
	crm_debug("Unknown or expired remote op: %s", id);
	return -EOPNOTSUPP;
	}

	replies_expected = QB_MIN(op->replies_expected, fencing_active_peers());
	if ((++op->replies >= replies_expected) && (op->state == st_query)) {
	have_all_replies = TRUE;
	}
	host = crm_element_value(msg, F_ORIG);
	host_is_target = safe_str_eq(host, op->target);

	if (devices <= 0) {
	/* If we're doing 'known' then we might need to fire anyway */
	crm_trace("Query result %d of %d from %s for %s/%s (%d devices) %s",
	op->replies, replies_expected, host,
	op->target, op->action, devices, id);
	if (have_all_replies) {
	crm_info("All query replies have arrived, continuing (%d expected/%d received for id %s)",
	replies_expected, op->replies, id);
	call_remote_stonith(op, NULL);
	}
	return pcmk_ok;
	}

	crm_info("Query result %d of %d from %s for %s/%s (%d devices) %s",
	op->replies, replies_expected, host,
	op->target, op->action, devices, id);
	result = calloc(1, sizeof(st_query_result_t));
	result->host = strdup(host);
	result->devices = devices;
	result->custom_action_timeouts = g_hash_table_new_full(crm_str_hash, g_str_equal, free, NULL);
	result->delay_maxes = g_hash_table_new_full(crm_str_hash, g_str_equal, free, NULL);
	result->verified_devices = g_hash_table_new_full(crm_str_hash, g_str_equal, free, NULL);

	for (child = __xml_first_child(dev); child != NULL; child = __xml_next(child)) {
	const char *device = ID(child);

	if (device) {
	int values[3];
	int verified = 0;

	result->device_list = g_list_prepend(result->device_list, strdup(device));
	crm_element_value_int(child, F_STONITH_DEVICE_VERIFIED, &verified);

	/* Parse properties specific to the operation's action */
	parse_action_specific(child, result->host, device, op->action, values);
	if (values[0]) {
	g_hash_table_insert(result->custom_action_timeouts,
	strdup(device), GINT_TO_POINTER(values[0]));
	}
	if (values[1] > 0) {
	g_hash_table_insert(result->delay_maxes,
	strdup(device), GINT_TO_POINTER(values[1]));
	}
	if (verified) {
	crm_trace("Peer %s has confirmed a verified device %s", result->host, device);
	g_hash_table_insert(result->verified_devices,
	strdup(device), GINT_TO_POINTER(verified));
	}
	if (values[2]) {
	/* This matters when executing a topology. Required devices will get
	* executed regardless of their topology level. We use this for unfencing. */
	add_required_device(op, device);
	}
	}
	}

	CRM_CHECK(devices == g_list_length(result->device_list),
	crm_err("Mis-match: Query claimed to have %d devices but %d found", devices,
	g_list_length(result->device_list)));

	op->query_results = g_list_insert_sorted(op->query_results, result, sort_peers);

	if (is_set(op->call_options, st_opt_topology)) {
	/* If we start the fencing before all the topology results are in,
	* it is possible fencing levels will be skipped because of the missing
	* query results. */
	if (op->state == st_query && all_topology_devices_found(op)) {
	/* All the query results are in for the topology, start the fencing ops. */
	crm_trace("All topology devices found");
	call_remote_stonith(op, result);

	} else if (have_all_replies) {
	crm_info("All topology query replies have arrived, continuing (%d expected/%d received) ",
	replies_expected, op->replies);
	call_remote_stonith(op, NULL);
	}

	} else if (op->state == st_query) {
	+ int nverified = count_peer_devices(result, TRUE);
	+
	/* We have a result for a non-topology fencing op that looks promising,
	* go ahead and start fencing before query timeout */
	- if (host_is_target == FALSE && g_hash_table_size(result->verified_devices)) {
	+ if ((host_is_target == FALSE) && nverified) {
	/* we have a verified device living on a peer that is not the target */
	- crm_trace("Found %d verified devices", g_hash_table_size(result->verified_devices));
	+ crm_trace("Found %d verified devices", nverified);
	call_remote_stonith(op, result);

	} else if (have_all_replies) {
	crm_info("All query replies have arrived, continuing (%d expected/%d received) ",
	replies_expected, op->replies);
	call_remote_stonith(op, NULL);

	} else {
	crm_trace("Waiting for more peer results before launching fencing operation");
	}

	} else if (op->state == st_done) {
	crm_info("Discarding query result from %s (%d devices): Operation is in state %d",
	result->host, result->devices, op->state);
	}

	return pcmk_ok;
	}

	int
	process_remote_stonith_exec(xmlNode * msg)
	{
	int rc = 0;
	const char *id = NULL;
	const char *device = NULL;
	remote_fencing_op_t *op = NULL;
	xmlNode *dev = get_xpath_object("//@" F_STONITH_REMOTE_OP_ID, msg, LOG_ERR);

	CRM_CHECK(dev != NULL, return -EPROTO);

	id = crm_element_value(dev, F_STONITH_REMOTE_OP_ID);
	CRM_CHECK(id != NULL, return -EPROTO);

	dev = get_xpath_object("//@" F_STONITH_RC, msg, LOG_ERR);
	CRM_CHECK(dev != NULL, return -EPROTO);

	crm_element_value_int(dev, F_STONITH_RC, &rc);

	device = crm_element_value(dev, F_STONITH_DEVICE);

	if (remote_op_list) {
	op = g_hash_table_lookup(remote_op_list, id);
	}

	if (op == NULL && rc == pcmk_ok) {
	/* Record successful fencing operations */
	const char *client_id = crm_element_value(dev, F_STONITH_CLIENTID);

	op = create_remote_stonith_op(client_id, dev, TRUE);
	}

	if (op == NULL) {
	/* Could be for an event that began before we started */
	/* TODO: Record the op for later querying */
	crm_info("Unknown or expired remote op: %s", id);
	return -EOPNOTSUPP;
	}

	if (op->devices && device && safe_str_neq(op->devices->data, device)) {
	crm_err
	("Received outdated reply for device %s (instead of %s) to %s node %s. Operation already timed out at remote level.",
	device, op->devices->data, op->action, op->target);
	return rc;
	}

	if (safe_str_eq(crm_element_value(msg, F_SUBTYPE), "broadcast")) {
	crm_debug("Marking call to %s for %s on behalf of %s@%s.%.8s: %s (%d)",
	op->action, op->target, op->client_name, op->id, op->originator,
	pcmk_strerror(rc), rc);
	if (rc == pcmk_ok) {
	op->state = st_done;
	} else {
	op->state = st_failed;
	}
	remote_op_done(op, msg, rc, FALSE);
	return pcmk_ok;
	} else if (safe_str_neq(op->originator, stonith_our_uname)) {
	/* If this isn't a remote level broadcast, and we are not the
	* originator of the operation, we should not be receiving this msg. */
	crm_err
	("%s received non-broadcast fencing result for operation it does not own (device %s targeting %s)",
	stonith_our_uname, device, op->target);
	return rc;
	}

	if (is_set(op->call_options, st_opt_topology)) {
	const char *device = crm_element_value(msg, F_STONITH_DEVICE);

	crm_notice("Call to %s for %s on behalf of %s@%s: %s (%d)",
	device, op->target, op->client_name, op->originator,
	pcmk_strerror(rc), rc);

	/* We own the op, and it is complete. broadcast the result to all nodes
	* and notify our local clients. */
	if (op->state == st_done) {
	remote_op_done(op, msg, rc, FALSE);
	return rc;
	}

	/* An operation completed succesfully but has not yet been marked as done.
	* Continue the topology if more devices exist at the current level, otherwise
	* mark as done. */
	if (rc == pcmk_ok) {
	GListPtr required_match = g_list_find_custom(op->required_list, device, sort_strings);
	if (op->devices) {
	/* Success, are there any more? */
	op->devices = op->devices->next;
	}
	if (required_match) {
	op->required_list = g_list_remove(op->required_list, required_match->data);
	}
	/* if no more devices at this fencing level, we are done,
	* else we need to contine with executing the next device in the list */
	if (op->devices == NULL) {
	crm_trace("Marking complex fencing op for %s as complete", op->target);
	op->state = st_done;
	remote_op_done(op, msg, rc, FALSE);
	return rc;
	}
	} else {
	/* This device failed, time to try another topology level. If no other
	* levels are available, mark this operation as failed and report results. */
	if (stonith_topology_next(op) != pcmk_ok) {
	op->state = st_failed;
	remote_op_done(op, msg, rc, FALSE);
	return rc;
	}
	}
	} else if (rc == pcmk_ok && op->devices == NULL) {
	crm_trace("All done for %s", op->target);

	op->state = st_done;
	remote_op_done(op, msg, rc, FALSE);
	return rc;
	} else if (rc == -ETIME && op->devices == NULL) {
	/* If the operation timed out don't bother retrying other peers. */
	op->state = st_failed;
	remote_op_done(op, msg, rc, FALSE);
	return rc;
	} else {
	/* fall-through and attempt other fencing action using another peer */
	}

	/* Retry on failure or execute the rest of the topology */
	crm_trace("Next for %s on behalf of %s@%s (rc was %d)", op->target, op->originator,
	op->client_name, rc);
	call_remote_stonith(op, NULL);
	return rc;
	}

	int
	stonith_fence_history(xmlNode * msg, xmlNode ** output)
	{
	int rc = 0;
	const char *target = NULL;
	xmlNode *dev = get_xpath_object("//@" F_STONITH_TARGET, msg, LOG_TRACE);

	if (dev) {
	int options = 0;

	target = crm_element_value(dev, F_STONITH_TARGET);
	crm_element_value_int(msg, F_STONITH_CALLOPTS, &options);
	if (target && (options & st_opt_cs_nodeid)) {
	int nodeid = crm_atoi(target, NULL);
	crm_node_t *node = crm_get_peer(nodeid, NULL);

	if (node) {
	target = node->uname;
	}
	}
	}

	crm_trace("Looking for operations on %s in %p", target, remote_op_list);

	*output = create_xml_node(NULL, F_STONITH_HISTORY_LIST);
	if (remote_op_list) {
	GHashTableIter iter;
	remote_fencing_op_t *op = NULL;

	g_hash_table_iter_init(&iter, remote_op_list);
	while (g_hash_table_iter_next(&iter, NULL, (void **)&op)) {
	xmlNode *entry = NULL;

	if (target && strcmp(op->target, target) != 0) {
	continue;
	}

	rc = 0;
	crm_trace("Attaching op %s", op->id);
	entry = create_xml_node(*output, STONITH_OP_EXEC);
	crm_xml_add(entry, F_STONITH_TARGET, op->target);
	crm_xml_add(entry, F_STONITH_ACTION, op->action);
	crm_xml_add(entry, F_STONITH_ORIGIN, op->originator);
	crm_xml_add(entry, F_STONITH_DELEGATE, op->delegate);
	crm_xml_add(entry, F_STONITH_CLIENTNAME, op->client_name);
	crm_xml_add_int(entry, F_STONITH_DATE, op->completed);
	crm_xml_add_int(entry, F_STONITH_STATE, op->state);
	}
	}

	return rc;
	}

	gboolean
	stonith_check_fence_tolerance(int tolerance, const char target, const char action)
	{
	GHashTableIter iter;
	time_t now = time(NULL);
	remote_fencing_op_t *rop = NULL;

	crm_trace("tolerance=%d, remote_op_list=%p", tolerance, remote_op_list);

	if (tolerance <= 0 \|\| !remote_op_list \|\| target == NULL \|\| action == NULL) {
	return FALSE;
	}

	g_hash_table_iter_init(&iter, remote_op_list);
	while (g_hash_table_iter_next(&iter, NULL, (void **)&rop)) {
	if (strcmp(rop->target, target) != 0) {
	continue;
	} else if (rop->state != st_done) {
	continue;
	} else if (strcmp(rop->action, action) != 0) {
	continue;
	} else if ((rop->completed + tolerance) < now) {
	continue;
	}

	crm_notice("Target %s was fenced (%s) less than %ds ago by %s on behalf of %s",
	target, action, tolerance, rop->delegate, rop->originator);
	return TRUE;
	}
	return FALSE;
	}

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