allocate.c
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allocate.c
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	/*
	* Copyright (C) 2004 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 <crm/crm.h>
	#include <crm/cib.h>
	#include <crm/msg_xml.h>
	#include <crm/common/xml.h>


	#include <glib.h>

	#include <crm/pengine/status.h>
	#include <pengine.h>
	#include <allocate.h>
	#include <utils.h>

	CRM_TRACE_INIT_DATA(pe_allocate);

	void set_alloc_actions(pe_working_set_t * data_set);
	void migrate_reload_madness(pe_working_set_t * data_set);

	resource_alloc_functions_t resource_class_alloc_functions[] = {
	{
	native_merge_weights,
	native_color,
	native_create_actions,
	native_create_probe,
	native_internal_constraints,
	native_rsc_colocation_lh,
	native_rsc_colocation_rh,
	native_rsc_location,
	native_action_flags,
	native_update_actions,
	native_expand,
	native_append_meta,
	},
	{
	group_merge_weights,
	group_color,
	group_create_actions,
	native_create_probe,
	group_internal_constraints,
	group_rsc_colocation_lh,
	group_rsc_colocation_rh,
	group_rsc_location,
	group_action_flags,
	group_update_actions,
	group_expand,
	group_append_meta,
	},
	{
	clone_merge_weights,
	clone_color,
	clone_create_actions,
	clone_create_probe,
	clone_internal_constraints,
	clone_rsc_colocation_lh,
	clone_rsc_colocation_rh,
	clone_rsc_location,
	clone_action_flags,
	clone_update_actions,
	clone_expand,
	clone_append_meta,
	},
	{
	master_merge_weights,
	master_color,
	master_create_actions,
	clone_create_probe,
	master_internal_constraints,
	clone_rsc_colocation_lh,
	master_rsc_colocation_rh,
	clone_rsc_location,
	clone_action_flags,
	clone_update_actions,
	clone_expand,
	master_append_meta,
	}
	};

	static gboolean
	check_rsc_parameters(resource_t * rsc, node_t * node, xmlNode * rsc_entry,
	pe_working_set_t * data_set)
	{
	int attr_lpc = 0;
	gboolean force_restart = FALSE;
	gboolean delete_resource = FALSE;

	const char *value = NULL;
	const char *old_value = NULL;

	const char *attr_list[] = {
	XML_ATTR_TYPE,
	XML_AGENT_ATTR_CLASS,
	XML_AGENT_ATTR_PROVIDER
	};

	for (; attr_lpc < DIMOF(attr_list); attr_lpc++) {
	value = crm_element_value(rsc->xml, attr_list[attr_lpc]);
	old_value = crm_element_value(rsc_entry, attr_list[attr_lpc]);
	if (value == old_value /* ie. NULL */
	\|\| crm_str_eq(value, old_value, TRUE)) {
	continue;
	}

	force_restart = TRUE;
	crm_notice("Forcing restart of %s on %s, %s changed: %s -> %s",
	rsc->id, node->details->uname, attr_list[attr_lpc],
	crm_str(old_value), crm_str(value));
	}
	if (force_restart) {
	/* make sure the restart happens */
	stop_action(rsc, node, FALSE);
	set_bit(rsc->flags, pe_rsc_start_pending);
	delete_resource = TRUE;
	}
	return delete_resource;
	}

	static void
	CancelXmlOp(resource_t * rsc, xmlNode * xml_op, node_t * active_node,
	const char reason, pe_working_set_t data_set)
	{
	int interval = 0;
	action_t *cancel = NULL;

	char *key = NULL;
	const char *task = NULL;
	const char *call_id = NULL;
	const char *interval_s = NULL;

	CRM_CHECK(xml_op != NULL, return);
	CRM_CHECK(active_node != NULL, return);

	task = crm_element_value(xml_op, XML_LRM_ATTR_TASK);
	call_id = crm_element_value(xml_op, XML_LRM_ATTR_CALLID);
	interval_s = crm_element_value(xml_op, XML_LRM_ATTR_INTERVAL);

	interval = crm_parse_int(interval_s, "0");

	/* we need to reconstruct the key because of the way we used to construct resource IDs */
	key = generate_op_key(rsc->id, task, interval);

	crm_info("Action %s on %s will be stopped: %s",
	key, active_node->details->uname, reason ? reason : "unknown");

	cancel = custom_action(rsc, strdup(key), RSC_CANCEL, active_node, FALSE, TRUE, data_set);

	free(cancel->task);
	cancel->task = strdup(RSC_CANCEL);

	add_hash_param(cancel->meta, XML_LRM_ATTR_TASK, task);
	add_hash_param(cancel->meta, XML_LRM_ATTR_CALLID, call_id);
	add_hash_param(cancel->meta, XML_LRM_ATTR_INTERVAL, interval_s);

	custom_action_order(rsc, stop_key(rsc), NULL, rsc, NULL, cancel, pe_order_optional, data_set);
	free(key);
	key = NULL;
	}

	static gboolean
	check_action_definition(resource_t * rsc, node_t * active_node, xmlNode * xml_op,
	pe_working_set_t * data_set)
	{
	char *key = NULL;
	int interval = 0;
	const char *interval_s = NULL;

	gboolean did_change = FALSE;

	xmlNode *params_all = NULL;
	xmlNode *params_restart = NULL;
	GHashTable *local_rsc_params = NULL;

	char *digest_all_calc = NULL;
	const char *digest_all = NULL;

	const char *restart_list = NULL;
	const char *digest_restart = NULL;
	char *digest_restart_calc = NULL;

	action_t *action = NULL;
	const char *task = crm_element_value(xml_op, XML_LRM_ATTR_TASK);
	const char *op_version = crm_element_value(xml_op, XML_ATTR_CRM_VERSION);

	CRM_CHECK(active_node != NULL, return FALSE);
	if (safe_str_eq(task, RSC_STOP)) {
	return FALSE;
	}

	interval_s = crm_element_value(xml_op, XML_LRM_ATTR_INTERVAL);
	interval = crm_parse_int(interval_s, "0");
	/* we need to reconstruct the key because of the way we used to construct resource IDs */
	key = generate_op_key(rsc->id, task, interval);

	if (interval > 0) {
	xmlNode *op_match = NULL;

	pe_rsc_trace(rsc, "Checking parameters for %s", key);
	op_match = find_rsc_op_entry(rsc, key);

	if (op_match == NULL && is_set(data_set->flags, pe_flag_stop_action_orphans)) {
	CancelXmlOp(rsc, xml_op, active_node, "orphan", data_set);
	free(key);
	return TRUE;

	} else if (op_match == NULL) {
	pe_rsc_debug(rsc, "Orphan action detected: %s on %s", key, active_node->details->uname);
	free(key);
	return TRUE;
	}
	}

	action = custom_action(rsc, key, task, active_node, TRUE, FALSE, data_set);
	/* key is free'd by custom_action() */

	local_rsc_params = g_hash_table_new_full(crm_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	get_rsc_attributes(local_rsc_params, rsc, active_node, data_set);

	params_all = create_xml_node(NULL, XML_TAG_PARAMS);
	g_hash_table_foreach(local_rsc_params, hash2field, params_all);
	g_hash_table_foreach(action->extra, hash2field, params_all);
	g_hash_table_foreach(rsc->parameters, hash2field, params_all);
	g_hash_table_foreach(action->meta, hash2metafield, params_all);

	filter_action_parameters(params_all, op_version);
	digest_all_calc = calculate_operation_digest(params_all, op_version);
	digest_all = crm_element_value(xml_op, XML_LRM_ATTR_OP_DIGEST);
	digest_restart = crm_element_value(xml_op, XML_LRM_ATTR_RESTART_DIGEST);
	restart_list = crm_element_value(xml_op, XML_LRM_ATTR_OP_RESTART);

	if (interval == 0 && safe_str_eq(task, RSC_STATUS)) {
	/* Reload based on the start action not a probe */
	task = RSC_START;

	} else if (interval == 0 && safe_str_eq(task, RSC_MIGRATED)) {
	/* Reload based on the start action not a migrate */
	task = RSC_START;
	}

	if (digest_restart) {
	/* Changes that force a restart */
	params_restart = copy_xml(params_all);
	if (restart_list) {
	filter_reload_parameters(params_restart, restart_list);
	}

	digest_restart_calc = calculate_operation_digest(params_restart, op_version);
	if (safe_str_neq(digest_restart_calc, digest_restart)) {
	did_change = TRUE;
	key = generate_op_key(rsc->id, task, interval);
	crm_log_xml_info(params_restart, "params:restart");
	crm_info("Parameters to %s on %s changed: was %s vs. now %s (restart:%s) %s",
	key, active_node->details->uname,
	crm_str(digest_restart), digest_restart_calc,
	op_version, crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));

	custom_action(rsc, key, task, NULL, FALSE, TRUE, data_set);
	goto cleanup;
	}
	}

	if (safe_str_neq(digest_all_calc, digest_all)) {
	/* Changes that can potentially be handled by a reload */
	did_change = TRUE;
	crm_log_xml_info(params_all, "params:reload");
	key = generate_op_key(rsc->id, task, interval);
	crm_info("Parameters to %s on %s changed: was %s vs. now %s (reload:%s) %s",
	key, active_node->details->uname,
	crm_str(digest_all), digest_all_calc, op_version,
	crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));

	if (interval > 0) {
	action_t *op = NULL;
	#if 0
	/* Always reload/restart the entire resource */
	op = custom_action(rsc, start_key(rsc), RSC_START, NULL, FALSE, TRUE, data_set);
	update_action_flags(op, pe_action_allow_reload_conversion);
	#else
	/* Re-sending the recurring op is sufficient - the old one will be cancelled automatically */
	op = custom_action(rsc, key, task, NULL, FALSE, TRUE, data_set);
	custom_action_order(rsc, start_key(rsc), NULL,
	NULL, NULL, op, pe_order_runnable_left, data_set);
	#endif

	} else if (digest_restart) {
	pe_rsc_trace(rsc, "Reloading '%s' action for resource %s", task, rsc->id);

	/* Allow this resource to reload - unless something else causes a full restart */
	set_bit(rsc->flags, pe_rsc_try_reload);

	/* Create these for now, it keeps the action IDs the same in the regression outputs */
	custom_action(rsc, key, task, NULL, TRUE, TRUE, data_set);

	} else {
	pe_rsc_trace(rsc, "Resource %s doesn't know how to reload", rsc->id);

	/* Re-send the start/demote/promote op
	* Recurring ops will be detected independantly
	*/
	custom_action(rsc, key, task, NULL, FALSE, TRUE, data_set);
	}
	}

	cleanup:
	free_xml(params_all);
	free_xml(params_restart);
	free(digest_all_calc);
	free(digest_restart_calc);
	g_hash_table_destroy(local_rsc_params);

	pe_free_action(action);

	return did_change;
	}

	extern gboolean DeleteRsc(resource_t * rsc, node_t * node, gboolean optional,
	pe_working_set_t * data_set);

	static void
	check_actions_for(xmlNode * rsc_entry, resource_t * rsc, node_t * node, pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	int offset = -1;
	int interval = 0;
	int stop_index = 0;
	int start_index = 0;

	const char *task = NULL;
	const char *interval_s = NULL;

	xmlNode *rsc_op = NULL;
	GListPtr op_list = NULL;
	GListPtr sorted_op_list = NULL;
	gboolean is_probe = FALSE;
	gboolean did_change = FALSE;

	CRM_CHECK(node != NULL, return);

	if (is_set(rsc->flags, pe_rsc_orphan)) {
	pe_rsc_trace(rsc, "Skipping param check for %s: orphan", rsc->id);
	return;

	} else if (pe_find_node_id(rsc->running_on, node->details->id) == NULL) {
	pe_rsc_trace(rsc, "Skipping param check for %s: no longer active on %s",
	rsc->id, node->details->uname);
	return;
	}

	pe_rsc_trace(rsc, "Processing %s on %s", rsc->id, node->details->uname);

	if (check_rsc_parameters(rsc, node, rsc_entry, data_set)) {
	DeleteRsc(rsc, node, FALSE, data_set);
	}

	for (rsc_op = __xml_first_child(rsc_entry); rsc_op != NULL; rsc_op = __xml_next(rsc_op)) {
	if (crm_str_eq((const char *)rsc_op->name, XML_LRM_TAG_RSC_OP, TRUE)) {
	op_list = g_list_prepend(op_list, rsc_op);
	}
	}

	sorted_op_list = g_list_sort(op_list, sort_op_by_callid);
	calculate_active_ops(sorted_op_list, &start_index, &stop_index);

	for (gIter = sorted_op_list; gIter != NULL; gIter = gIter->next) {
	xmlNode rsc_op = (xmlNode ) gIter->data;

	offset++;

	if (start_index < stop_index) {
	/* stopped */
	continue;
	} else if (offset < start_index) {
	/* action occurred prior to a start */
	continue;
	}

	is_probe = FALSE;
	did_change = FALSE;
	task = crm_element_value(rsc_op, XML_LRM_ATTR_TASK);

	interval_s = crm_element_value(rsc_op, XML_LRM_ATTR_INTERVAL);
	interval = crm_parse_int(interval_s, "0");

	if (interval == 0 && safe_str_eq(task, RSC_STATUS)) {
	is_probe = TRUE;
	}

	if (interval > 0 && is_set(data_set->flags, pe_flag_maintenance_mode)) {
	CancelXmlOp(rsc, rsc_op, node, "maintenance mode", data_set);

	} else if (is_probe \|\| safe_str_eq(task, RSC_START) \|\| interval > 0 \|\| safe_str_eq(task, RSC_MIGRATED)) {
	did_change = check_action_definition(rsc, node, rsc_op, data_set);
	}

	if (did_change && get_failcount(node, rsc, NULL, data_set)) {
	char *key = NULL;
	action_t *action_clear = NULL;

	key = generate_op_key(rsc->id, CRM_OP_CLEAR_FAILCOUNT, 0);
	action_clear = custom_action(rsc, key, CRM_OP_CLEAR_FAILCOUNT, node, FALSE, TRUE, data_set);
	set_bit(action_clear->flags, pe_action_runnable);
	}
	}

	g_list_free(sorted_op_list);

	}

	static GListPtr
	find_rsc_list(GListPtr result, resource_t * rsc, const char *id, gboolean renamed_clones,
	gboolean partial, pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	gboolean match = FALSE;

	if (id == NULL) {
	return NULL;

	} else if (rsc == NULL && data_set) {

	for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	result = find_rsc_list(result, child, id, renamed_clones, partial, NULL);
	}

	return result;

	} else if (rsc == NULL) {
	return NULL;
	}

	if (partial) {
	if (strstr(rsc->id, id)) {
	match = TRUE;

	} else if (renamed_clones && rsc->clone_name && strstr(rsc->clone_name, id)) {
	match = TRUE;
	}

	} else {
	if (strcmp(rsc->id, id) == 0) {
	match = TRUE;

	} else if (renamed_clones && rsc->clone_name && strcmp(rsc->clone_name, id) == 0) {
	match = TRUE;
	}
	}

	if (match) {
	result = g_list_prepend(result, rsc);
	}

	if (rsc->children) {
	gIter = rsc->children;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	result = find_rsc_list(result, child, id, renamed_clones, partial, NULL);
	}
	}

	return result;
	}

	static void
	check_actions(pe_working_set_t * data_set)
	{
	const char *id = NULL;
	node_t *node = NULL;
	xmlNode *lrm_rscs = NULL;
	xmlNode *status = get_object_root(XML_CIB_TAG_STATUS, data_set->input);

	xmlNode *node_state = NULL;

	for (node_state = __xml_first_child(status); node_state != NULL;
	node_state = __xml_next(node_state)) {
	if (crm_str_eq((const char *)node_state->name, XML_CIB_TAG_STATE, TRUE)) {
	id = crm_element_value(node_state, XML_ATTR_ID);
	lrm_rscs = find_xml_node(node_state, XML_CIB_TAG_LRM, FALSE);
	lrm_rscs = find_xml_node(lrm_rscs, XML_LRM_TAG_RESOURCES, FALSE);

	node = pe_find_node_id(data_set->nodes, id);

	if (node == NULL) {
	continue;

	} else if (can_run_resources(node) == FALSE) {
	crm_trace("Skipping param check for %s: cant run resources",
	node->details->uname);
	continue;
	}

	crm_trace("Processing node %s", node->details->uname);
	if (node->details->online \|\| is_set(data_set->flags, pe_flag_stonith_enabled)) {
	xmlNode *rsc_entry = NULL;

	for (rsc_entry = __xml_first_child(lrm_rscs); rsc_entry != NULL;
	rsc_entry = __xml_next(rsc_entry)) {
	if (crm_str_eq((const char *)rsc_entry->name, XML_LRM_TAG_RESOURCE, TRUE)) {

	if (xml_has_children(rsc_entry)) {
	GListPtr gIter = NULL;
	GListPtr result = NULL;
	const char *rsc_id = ID(rsc_entry);

	CRM_CHECK(rsc_id != NULL, return);

	result = find_rsc_list(NULL, NULL, rsc_id, TRUE, FALSE, data_set);
	for (gIter = result; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	check_actions_for(rsc_entry, rsc, node, data_set);
	}
	g_list_free(result);
	}
	}
	}
	}
	}
	}
	}

	static gboolean
	apply_placement_constraints(pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;

	crm_trace("Applying constraints...");

	for (gIter = data_set->placement_constraints; gIter != NULL; gIter = gIter->next) {
	rsc_to_node_t cons = (rsc_to_node_t ) gIter->data;

	cons->rsc_lh->cmds->rsc_location(cons->rsc_lh, cons);
	}

	return TRUE;

	}

	static void
	common_apply_stickiness(resource_t * rsc, node_t * node, pe_working_set_t * data_set)
	{
	int fail_count = 0;
	resource_t *failed = rsc;

	if (rsc->children) {
	GListPtr gIter = rsc->children;

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child_rsc = (resource_t ) gIter->data;

	common_apply_stickiness(child_rsc, node, data_set);
	}
	return;
	}

	if (is_set(rsc->flags, pe_rsc_managed)
	&& rsc->stickiness != 0 && g_list_length(rsc->running_on) == 1) {
	node_t *current = pe_find_node_id(rsc->running_on, node->details->id);
	node_t *match = pe_hash_table_lookup(rsc->allowed_nodes, node->details->id);

	if (current == NULL) {

	} else if (match != NULL \|\| is_set(data_set->flags, pe_flag_symmetric_cluster)) {
	resource_t *sticky_rsc = rsc;

	resource_location(sticky_rsc, node, rsc->stickiness, "stickiness", data_set);
	pe_rsc_debug(sticky_rsc, "Resource %s: preferring current location"
	" (node=%s, weight=%d)", sticky_rsc->id,
	node->details->uname, rsc->stickiness);
	} else {
	GHashTableIter iter;
	node_t *nIter = NULL;

	pe_rsc_debug(rsc, "Ignoring stickiness for %s: the cluster is asymmetric"
	" and node %s is not explicitly allowed", rsc->id, node->details->uname);
	g_hash_table_iter_init(&iter, rsc->allowed_nodes);
	while (g_hash_table_iter_next(&iter, NULL, (void **)&nIter)) {
	crm_err("%s[%s] = %d", rsc->id, nIter->details->uname, nIter->weight);
	}
	}
	}

	if (is_not_set(rsc->flags, pe_rsc_unique)) {
	failed = uber_parent(rsc);
	}

	fail_count = get_failcount(node, rsc, NULL, data_set);
	if (fail_count > 0 && rsc->migration_threshold != 0) {
	if (rsc->migration_threshold <= fail_count) {
	resource_location(failed, node, -INFINITY, "__fail_limit__", data_set);
	crm_warn("Forcing %s away from %s after %d failures (max=%d)",
	failed->id, node->details->uname, fail_count, rsc->migration_threshold);
	} else {
	crm_info("%s can fail %d more times on %s before being forced off",
	failed->id, rsc->migration_threshold - fail_count, node->details->uname);
	}
	}
	}

	static void
	complex_set_cmds(resource_t * rsc)
	{
	GListPtr gIter = rsc->children;

	rsc->cmds = &resource_class_alloc_functions[rsc->variant];

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child_rsc = (resource_t ) gIter->data;

	complex_set_cmds(child_rsc);
	}
	}

	void
	set_alloc_actions(pe_working_set_t * data_set)
	{

	GListPtr gIter = data_set->resources;

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	complex_set_cmds(rsc);
	}
	}

	static void
	calculate_system_health(gpointer gKey, gpointer gValue, gpointer user_data)
	{
	const char key = (const char )gKey;
	const char value = (const char )gValue;
	int system_health = (int )user_data;

	if (!gKey \|\| !gValue \|\| !user_data) {
	return;
	}

	/* Does it start with #health? */
	if (0 == strncmp(key, "#health", 7)) {
	int score;

	/* Convert the value into an integer */
	score = char2score(value);

	/* Add it to the running total */
	system_health = merge_weights(score, system_health);
	}
	}

	static gboolean
	apply_system_health(pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	const char *health_strategy = pe_pref(data_set->config_hash, "node-health-strategy");

	if (health_strategy == NULL \|\| safe_str_eq(health_strategy, "none")) {
	/* Prevent any accidental health -> score translation */
	node_score_red = 0;
	node_score_yellow = 0;
	node_score_green = 0;
	return TRUE;

	} else if (safe_str_eq(health_strategy, "migrate-on-red")) {

	/* Resources on nodes which have health values of red are
	* weighted away from that node.
	*/
	node_score_red = -INFINITY;
	node_score_yellow = 0;
	node_score_green = 0;

	} else if (safe_str_eq(health_strategy, "only-green")) {

	/* Resources on nodes which have health values of red or yellow
	* are forced away from that node.
	*/
	node_score_red = -INFINITY;
	node_score_yellow = -INFINITY;
	node_score_green = 0;

	} else if (safe_str_eq(health_strategy, "progressive")) {
	/* Same as the above, but use the r/y/g scores provided by the user
	* Defaults are provided by the pe_prefs table
	*/

	} else if (safe_str_eq(health_strategy, "custom")) {

	/* Requires the admin to configure the rsc_location constaints for
	* processing the stored health scores
	*/
	/* TODO: Check for the existance of appropriate node health constraints */
	return TRUE;

	} else {
	crm_err("Unknown node health strategy: %s", health_strategy);
	return FALSE;
	}

	crm_info("Applying automated node health strategy: %s", health_strategy);

	for (gIter = data_set->nodes; gIter != NULL; gIter = gIter->next) {
	int system_health = 0;
	node_t node = (node_t ) gIter->data;

	/* Search through the node hash table for system health entries. */
	g_hash_table_foreach(node->details->attrs, calculate_system_health, &system_health);

	crm_info(" Node %s has an combined system health of %d",
	node->details->uname, system_health);

	/* If the health is non-zero, then create a new rsc2node so that the
	* weight will be added later on.
	*/
	if (system_health != 0) {

	GListPtr gIter2 = data_set->resources;

	for (; gIter2 != NULL; gIter2 = gIter2->next) {
	resource_t rsc = (resource_t ) gIter2->data;

	rsc2node_new(health_strategy, rsc, system_health, node, data_set);
	}
	}

	}

	return TRUE;
	}

	gboolean
	stage0(pe_working_set_t * data_set)
	{
	xmlNode *cib_constraints = get_object_root(XML_CIB_TAG_CONSTRAINTS, data_set->input);

	if (data_set->input == NULL) {
	return FALSE;
	}

	if (is_set(data_set->flags, pe_flag_have_status) == FALSE) {
	crm_trace("Calculating status");
	cluster_status(data_set);
	}

	set_alloc_actions(data_set);
	apply_system_health(data_set);
	unpack_constraints(cib_constraints, data_set);

	return TRUE;
	}

	static void
	wait_for_probe(resource_t * rsc, const char action, action_t probe_complete,
	pe_working_set_t * data_set)
	{
	if (probe_complete == NULL) {
	return;
	}

	if (rsc->children) {
	GListPtr gIter = rsc->children;

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	wait_for_probe(child, action, probe_complete, data_set);
	}

	} else {
	char *key = NULL;

	if(safe_str_eq(action, RSC_STOP) && g_list_length(rsc->running_on) == 1) {
	node_t node = (node_t ) rsc->running_on->data;

	/* Stop actions on nodes that are shutting down do not need to wait for probes to complete
	* Doing so prevents node shutdown in the presence of nodes that are coming up
	* The purpose of waiting is to not stop resources until we know for sure the
	* intended destination is able to take them
	*/
	if(node && node->details->shutdown) {
	crm_debug("Skipping %s before %s_%s_0 due to %s shutdown",
	probe_complete->uuid, rsc->id, action, node->details->uname);
	return;
	}
	}

	key = generate_op_key(rsc->id, action, 0);
	custom_action_order(NULL, NULL, probe_complete, rsc, key, NULL,
	pe_order_optional, data_set);
	}
	}

	/*
	* Check nodes for resources started outside of the LRM
	*/
	gboolean
	probe_resources(pe_working_set_t * data_set)
	{
	action_t *probe_complete = NULL;
	action_t *probe_node_complete = NULL;

	GListPtr gIter = NULL;
	GListPtr gIter2 = NULL;

	gIter = data_set->nodes;
	for (; gIter != NULL; gIter = gIter->next) {
	node_t node = (node_t ) gIter->data;
	const char *probed = g_hash_table_lookup(node->details->attrs, CRM_OP_PROBED);

	if (node->details->online == FALSE) {
	continue;

	} else if (node->details->unclean) {
	continue;

	} else if (probe_complete == NULL) {
	probe_complete = get_pseudo_op(CRM_OP_PROBED, data_set);
	}

	if (probed != NULL && crm_is_true(probed) == FALSE) {
	action_t *probe_op = custom_action(NULL, strdup(CRM_OP_REPROBE),
	CRM_OP_REPROBE, node, FALSE, TRUE, data_set);

	add_hash_param(probe_op->meta, XML_ATTR_TE_NOWAIT, XML_BOOLEAN_TRUE);
	continue;
	}

	probe_node_complete = custom_action(NULL, strdup(CRM_OP_PROBED),
	CRM_OP_PROBED, node, FALSE, TRUE, data_set);
	if (crm_is_true(probed)) {
	crm_trace("unset");
	update_action_flags(probe_node_complete, pe_action_optional);
	} else {
	crm_trace("set");
	update_action_flags(probe_node_complete, pe_action_optional \| pe_action_clear);
	}
	crm_trace("%s - %d", node->details->uname, probe_node_complete->flags & pe_action_optional);
	probe_node_complete->priority = INFINITY;
	add_hash_param(probe_node_complete->meta, XML_ATTR_TE_NOWAIT, XML_BOOLEAN_TRUE);

	if (node->details->pending) {
	update_action_flags(probe_node_complete, pe_action_runnable \| pe_action_clear);
	crm_info("Action %s on %s is unrunnable (pending)",
	probe_node_complete->uuid, probe_node_complete->node->details->uname);
	}

	order_actions(probe_node_complete, probe_complete,
	pe_order_runnable_left /\|pe_order_implies_then / );

	gIter2 = data_set->resources;
	for (; gIter2 != NULL; gIter2 = gIter2->next) {
	resource_t rsc = (resource_t ) gIter2->data;

	if (rsc->cmds->create_probe(rsc, node, probe_node_complete, FALSE, data_set)) {

	update_action_flags(probe_complete, pe_action_optional \| pe_action_clear);
	update_action_flags(probe_node_complete, pe_action_optional \| pe_action_clear);

	wait_for_probe(rsc, RSC_START, probe_complete, data_set);
	}
	}
	}

	gIter = data_set->resources;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	wait_for_probe(rsc, RSC_STOP, probe_complete, data_set);
	}

	return TRUE;
	}

	/*
	* Count how many valid nodes we have (so we know the maximum number of
	* colors we can resolve).
	*
	* Apply node constraints (ie. filter the "allowed_nodes" part of resources
	*/
	gboolean
	stage2(pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;

	crm_trace("Applying placement constraints");

	gIter = data_set->nodes;
	for (; gIter != NULL; gIter = gIter->next) {
	node_t node = (node_t ) gIter->data;

	if (node == NULL) {
	/* error */

	} else if (node->weight >= 0.0 /* global weight */
	&& node->details->online && node->details->type == node_member) {
	data_set->max_valid_nodes++;
	}
	}

	apply_placement_constraints(data_set);

	gIter = data_set->nodes;
	for (; gIter != NULL; gIter = gIter->next) {
	GListPtr gIter2 = NULL;
	node_t node = (node_t ) gIter->data;

	gIter2 = data_set->resources;
	for (; gIter2 != NULL; gIter2 = gIter2->next) {
	resource_t rsc = (resource_t ) gIter2->data;

	common_apply_stickiness(rsc, node, data_set);
	}
	}

	return TRUE;
	}

	/*
	* Create internal resource constraints before allocation
	*/
	gboolean
	stage3(pe_working_set_t * data_set)
	{

	GListPtr gIter = data_set->resources;

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	rsc->cmds->internal_constraints(rsc, data_set);
	}

	return TRUE;
	}

	/*
	* Check for orphaned or redefined actions
	*/
	gboolean
	stage4(pe_working_set_t * data_set)
	{
	check_actions(data_set);
	return TRUE;
	}

	static gint
	sort_rsc_process_order(gconstpointer a, gconstpointer b, gpointer data)
	{
	int rc = 0;
	int r1_weight = -INFINITY;
	int r2_weight = -INFINITY;

	const char *reason = "existance";

	const GListPtr nodes = (GListPtr) data;
	resource_t resource1 = (resource_t ) convert_const_pointer(a);
	resource_t resource2 = (resource_t ) convert_const_pointer(b);

	node_t *node = NULL;
	GListPtr gIter = NULL;
	GHashTable *r1_nodes = NULL;
	GHashTable *r2_nodes = NULL;

	if (a == NULL && b == NULL) {
	goto done;
	}
	if (a == NULL) {
	return 1;
	}
	if (b == NULL) {
	return -1;
	}

	reason = "priority";
	r1_weight = resource1->priority;
	r2_weight = resource2->priority;

	if (r1_weight > r2_weight) {
	rc = -1;
	goto done;
	}

	if (r1_weight < r2_weight) {
	rc = 1;
	goto done;
	}

	reason = "no node list";
	if (nodes == NULL) {
	goto done;
	}

	r1_nodes =
	rsc_merge_weights(resource1, resource1->id, NULL, NULL, 1,
	pe_weights_forward \| pe_weights_init);
	dump_node_scores(LOG_TRACE, NULL, resource1->id, r1_nodes);
	r2_nodes =
	rsc_merge_weights(resource2, resource2->id, NULL, NULL, 1,
	pe_weights_forward \| pe_weights_init);
	dump_node_scores(LOG_TRACE, NULL, resource2->id, r2_nodes);

	/* Current location score */
	reason = "current location";
	r1_weight = -INFINITY;
	r2_weight = -INFINITY;

	if (resource1->running_on) {
	node = g_list_nth_data(resource1->running_on, 0);
	node = g_hash_table_lookup(r1_nodes, node->details->id);
	r1_weight = node->weight;
	}
	if (resource2->running_on) {
	node = g_list_nth_data(resource2->running_on, 0);
	node = g_hash_table_lookup(r2_nodes, node->details->id);
	r2_weight = node->weight;
	}

	if (r1_weight > r2_weight) {
	rc = -1;
	goto done;
	}

	if (r1_weight < r2_weight) {
	rc = 1;
	goto done;
	}

	reason = "score";
	for (gIter = nodes; gIter != NULL; gIter = gIter->next) {
	node_t *r1_node = NULL;
	node_t *r2_node = NULL;

	node = (node_t *) gIter->data;

	r1_weight = -INFINITY;
	if (r1_nodes) {
	r1_node = g_hash_table_lookup(r1_nodes, node->details->id);
	}
	if (r1_node) {
	r1_weight = r1_node->weight;
	}

	r2_weight = -INFINITY;
	if (r2_nodes) {
	r2_node = g_hash_table_lookup(r2_nodes, node->details->id);
	}
	if (r2_node) {
	r2_weight = r2_node->weight;
	}

	if (r1_weight > r2_weight) {
	rc = -1;
	goto done;
	}

	if (r1_weight < r2_weight) {
	rc = 1;
	goto done;
	}
	}

	done:
	if (r1_nodes) {
	g_hash_table_destroy(r1_nodes);
	}
	if (r2_nodes) {
	g_hash_table_destroy(r2_nodes);
	}

	crm_trace( "%s (%d) %c %s (%d) on %s: %s",
	resource1->id, r1_weight, rc < 0 ? '>' : rc > 0 ? '<' : '=',
	resource2->id, r2_weight, node ? node->details->id : "n/a", reason);
	return rc;
	}

	gboolean
	stage5(pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;

	if (safe_str_neq(data_set->placement_strategy, "default")) {
	GListPtr nodes = g_list_copy(data_set->nodes);

	nodes = g_list_sort_with_data(nodes, sort_node_weight, NULL);

	data_set->resources =
	g_list_sort_with_data(data_set->resources, sort_rsc_process_order, nodes);

	g_list_free(nodes);
	}

	gIter = data_set->nodes;
	for (; gIter != NULL; gIter = gIter->next) {
	node_t node = (node_t ) gIter->data;

	dump_node_capacity(show_utilization ? 0 : utilization_log_level, "Original", node);
	}

	crm_trace("Allocating services");
	/* Take (next) highest resource, assign it and create its actions */

	gIter = data_set->resources;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	pe_rsc_trace(rsc, "Allocating: %s", rsc->id);
	rsc->cmds->allocate(rsc, NULL, data_set);
	}

	gIter = data_set->nodes;
	for (; gIter != NULL; gIter = gIter->next) {
	node_t node = (node_t ) gIter->data;

	dump_node_capacity(show_utilization ? 0 : utilization_log_level, "Remaining", node);
	}

	if (is_set(data_set->flags, pe_flag_startup_probes)) {
	crm_trace("Calculating needed probes");
	/* This code probably needs optimization
	* ptest -x with 100 nodes, 100 clones and clone-max=100:

	With probes:

	ptest[14781]: 2010/09/27_17:56:46 notice: TRACE: do_calculations: pengine.c:258 Calculate cluster status
	ptest[14781]: 2010/09/27_17:56:46 notice: TRACE: do_calculations: pengine.c:278 Applying placement constraints
	ptest[14781]: 2010/09/27_17:56:47 notice: TRACE: do_calculations: pengine.c:285 Create internal constraints
	ptest[14781]: 2010/09/27_17:56:47 notice: TRACE: do_calculations: pengine.c:292 Check actions
	ptest[14781]: 2010/09/27_17:56:48 notice: TRACE: do_calculations: pengine.c:299 Allocate resources
	ptest[14781]: 2010/09/27_17:56:48 notice: TRACE: stage5: allocate.c:881 Allocating services
	ptest[14781]: 2010/09/27_17:56:49 notice: TRACE: stage5: allocate.c:894 Calculating needed probes
	ptest[14781]: 2010/09/27_17:56:51 notice: TRACE: stage5: allocate.c:899 Creating actions
	ptest[14781]: 2010/09/27_17:56:52 notice: TRACE: stage5: allocate.c:905 Creating done
	ptest[14781]: 2010/09/27_17:56:52 notice: TRACE: do_calculations: pengine.c:306 Processing fencing and shutdown cases
	ptest[14781]: 2010/09/27_17:56:52 notice: TRACE: do_calculations: pengine.c:313 Applying ordering constraints
	36s
	ptest[14781]: 2010/09/27_17:57:28 notice: TRACE: do_calculations: pengine.c:320 Create transition graph

	Without probes:

	ptest[14637]: 2010/09/27_17:56:21 notice: TRACE: do_calculations: pengine.c:258 Calculate cluster status
	ptest[14637]: 2010/09/27_17:56:22 notice: TRACE: do_calculations: pengine.c:278 Applying placement constraints
	ptest[14637]: 2010/09/27_17:56:22 notice: TRACE: do_calculations: pengine.c:285 Create internal constraints
	ptest[14637]: 2010/09/27_17:56:22 notice: TRACE: do_calculations: pengine.c:292 Check actions
	ptest[14637]: 2010/09/27_17:56:23 notice: TRACE: do_calculations: pengine.c:299 Allocate resources
	ptest[14637]: 2010/09/27_17:56:23 notice: TRACE: stage5: allocate.c:881 Allocating services
	ptest[14637]: 2010/09/27_17:56:24 notice: TRACE: stage5: allocate.c:899 Creating actions
	ptest[14637]: 2010/09/27_17:56:25 notice: TRACE: stage5: allocate.c:905 Creating done
	ptest[14637]: 2010/09/27_17:56:25 notice: TRACE: do_calculations: pengine.c:306 Processing fencing and shutdown cases
	ptest[14637]: 2010/09/27_17:56:25 notice: TRACE: do_calculations: pengine.c:313 Applying ordering constraints
	ptest[14637]: 2010/09/27_17:56:25 notice: TRACE: do_calculations: pengine.c:320 Create transition graph
	*/

	probe_resources(data_set);
	}

	crm_trace("Creating actions");

	gIter = data_set->resources;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	rsc->cmds->create_actions(rsc, data_set);
	}

	crm_trace("Creating done");
	return TRUE;
	}

	static gboolean
	is_managed(const resource_t * rsc)
	{
	GListPtr gIter = rsc->children;

	if (is_set(rsc->flags, pe_rsc_managed)) {
	return TRUE;
	}

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child_rsc = (resource_t ) gIter->data;

	if (is_managed(child_rsc)) {
	return TRUE;
	}
	}

	return FALSE;
	}

	static gboolean
	any_managed_resouces(pe_working_set_t * data_set)
	{

	GListPtr gIter = data_set->resources;

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	if (is_managed(rsc)) {
	return TRUE;
	}
	}
	return FALSE;
	}

	action_t *
	pe_fence_op(node_t node, const char op, pe_working_set_t * data_set)
	{
	action_t *stonith_op = custom_action(
	NULL, g_strdup_printf("%s-%s", CRM_OP_FENCE, node->details->uname),
	CRM_OP_FENCE, node, FALSE, TRUE, data_set);

	add_hash_param(stonith_op->meta, XML_LRM_ATTR_TARGET, node->details->uname);

	add_hash_param(stonith_op->meta, XML_LRM_ATTR_TARGET_UUID, node->details->id);

	add_hash_param(stonith_op->meta, "stonith_action", op?op:data_set->stonith_action);

	return stonith_op;
	}


	/*
	* Create dependancies for stonith and shutdown operations
	*/
	gboolean
	stage6(pe_working_set_t * data_set)
	{
	action_t *dc_down = NULL;
	action_t *dc_fence = NULL;
	action_t *stonith_op = NULL;
	action_t *last_stonith = NULL;
	gboolean integrity_lost = FALSE;
	action_t *all_stopped = get_pseudo_op(ALL_STOPPED, data_set);
	action_t *done = get_pseudo_op(STONITH_DONE, data_set);
	gboolean need_stonith = FALSE;
	GListPtr gIter = data_set->nodes;

	crm_trace("Processing fencing and shutdown cases");

	if (is_set(data_set->flags, pe_flag_stonith_enabled)
	&& (is_set(data_set->flags, pe_flag_have_quorum)
	\|\| data_set->no_quorum_policy == no_quorum_ignore
	\|\| data_set->no_quorum_policy == no_quorum_suicide)) {
	need_stonith = TRUE;
	}

	if (need_stonith && any_managed_resouces(data_set) == FALSE) {
	crm_notice("Delaying fencing operations until there are resources to manage");
	need_stonith = FALSE;
	}

	for (; gIter != NULL; gIter = gIter->next) {
	node_t node = (node_t ) gIter->data;

	stonith_op = NULL;
	if (node->details->unclean && need_stonith) {
	pe_warn("Scheduling Node %s for STONITH", node->details->uname);

	stonith_op = pe_fence_op(node, NULL, data_set);

	stonith_constraints(node, stonith_op, data_set);

	if (node->details->is_dc) {
	dc_down = stonith_op;
	dc_fence = stonith_op;

	} else {
	if (last_stonith) {
	order_actions(last_stonith, stonith_op, pe_order_optional);
	}
	last_stonith = stonith_op;
	}

	} else if (node->details->online && node->details->shutdown) {
	action_t *down_op = NULL;

	crm_notice("Scheduling Node %s for shutdown", node->details->uname);

	down_op = custom_action(NULL, strdup(CRM_OP_SHUTDOWN),
	CRM_OP_SHUTDOWN, node, FALSE, TRUE, data_set);

	shutdown_constraints(node, down_op, data_set);
	add_hash_param(down_op->meta, XML_ATTR_TE_NOWAIT, XML_BOOLEAN_TRUE);

	if (node->details->is_dc) {
	dc_down = down_op;
	}
	}

	if (node->details->unclean && stonith_op == NULL) {
	integrity_lost = TRUE;
	pe_warn("Node %s is unclean!", node->details->uname);
	}
	}

	if (integrity_lost) {
	if (is_set(data_set->flags, pe_flag_stonith_enabled) == FALSE) {
	pe_warn("YOUR RESOURCES ARE NOW LIKELY COMPROMISED");
	pe_err("ENABLE STONITH TO KEEP YOUR RESOURCES SAFE");

	} else if (is_set(data_set->flags, pe_flag_have_quorum) == FALSE) {
	crm_notice("Cannot fence unclean nodes until quorum is"
	" attained (or no-quorum-policy is set to ignore)");
	}
	}

	if (dc_down != NULL) {
	GListPtr shutdown_matches = find_actions(data_set->actions, CRM_OP_SHUTDOWN, NULL);

	crm_trace("Ordering shutdowns before %s on %s (DC)",
	dc_down->task, dc_down->node->details->uname);

	add_hash_param(dc_down->meta, XML_ATTR_TE_NOWAIT, XML_BOOLEAN_TRUE);

	gIter = shutdown_matches;
	for (; gIter != NULL; gIter = gIter->next) {
	action_t node_stop = (action_t ) gIter->data;

	if (node_stop->node->details->is_dc) {
	continue;
	}
	crm_debug("Ordering shutdown on %s before %s on %s",
	node_stop->node->details->uname,
	dc_down->task, dc_down->node->details->uname);

	order_actions(node_stop, dc_down, pe_order_optional);
	}

	if (last_stonith && dc_down != last_stonith) {
	order_actions(last_stonith, dc_down, pe_order_optional);
	}
	g_list_free(shutdown_matches);
	}

	if (last_stonith) {
	order_actions(last_stonith, done, pe_order_implies_then);

	} else if (dc_fence) {
	order_actions(dc_down, done, pe_order_implies_then);
	}

	order_actions(done, all_stopped, pe_order_implies_then);
	return TRUE;
	}

	/*
	* Determin the sets of independant actions and the correct order for the
	* actions in each set.
	*
	* Mark dependencies of un-runnable actions un-runnable
	*
	*/
	static GListPtr
	find_actions_by_task(GListPtr actions, resource_t * rsc, const char *original_key)
	{
	GListPtr list = NULL;

	list = find_actions(actions, original_key, NULL);
	if (list == NULL) {
	/* we're potentially searching a child of the original resource */
	char *key = NULL;
	char *tmp = NULL;
	char *task = NULL;
	int interval = 0;

	if (parse_op_key(original_key, &tmp, &task, &interval)) {
	key = generate_op_key(rsc->id, task, interval);
	/* crm_err("looking up %s instead of %s", key, original_key); */
	/* slist_iter(action, action_t, actions, lpc, */
	/* crm_err(" - %s", action->uuid)); */
	list = find_actions(actions, key, NULL);

	} else {
	crm_err("search key: %s", original_key);
	}

	free(key);
	free(tmp);
	free(task);
	}

	return list;
	}

	static void
	rsc_order_then(action_t * lh_action, resource_t * rsc, order_constraint_t * order)
	{
	GListPtr gIter = NULL;
	GListPtr rh_actions = NULL;
	action_t *rh_action = NULL;
	enum pe_ordering type = order->type;

	CRM_CHECK(rsc != NULL, return);
	CRM_CHECK(order != NULL, return);

	rh_action = order->rh_action;
	crm_trace("Processing RH of ordering constraint %d", order->id);

	if (rh_action != NULL) {
	rh_actions = g_list_prepend(NULL, rh_action);

	} else if (rsc != NULL) {
	rh_actions = find_actions_by_task(rsc->actions, rsc, order->rh_action_task);
	}

	if (rh_actions == NULL) {
	pe_rsc_trace(rsc, "No RH-Side (%s/%s) found for constraint..."
	" ignoring", rsc->id, order->rh_action_task);
	if (lh_action) {
	pe_rsc_trace(rsc, "LH-Side was: %s", lh_action->uuid);
	}
	return;
	}

	if (lh_action && lh_action->rsc == rsc && is_set(lh_action->flags, pe_action_dangle)) {
	pe_rsc_trace(rsc, "Detected dangling operation %s -> %s", lh_action->uuid, order->rh_action_task);
	clear_bit(type, pe_order_implies_then);
	}

	gIter = rh_actions;
	for (; gIter != NULL; gIter = gIter->next) {
	action_t rh_action_iter = (action_t ) gIter->data;

	if (lh_action) {
	order_actions(lh_action, rh_action_iter, type);

	} else if (type & pe_order_implies_then) {
	update_action_flags(rh_action_iter, pe_action_runnable \| pe_action_clear);
	crm_warn("Unrunnable %s 0x%.6x", rh_action_iter->uuid, type);
	} else {
	crm_warn("neither %s 0x%.6x", rh_action_iter->uuid, type);
	}
	}

	g_list_free(rh_actions);
	}

	static void
	rsc_order_first(resource_t * lh_rsc, order_constraint_t * order, pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	GListPtr lh_actions = NULL;
	action_t *lh_action = order->lh_action;
	resource_t *rh_rsc = order->rh_rsc;

	crm_trace("Processing LH of ordering constraint %d", order->id);
	CRM_ASSERT(lh_rsc != NULL);

	if (lh_action != NULL) {
	lh_actions = g_list_prepend(NULL, lh_action);

	} else if (lh_action == NULL) {
	lh_actions = find_actions_by_task(lh_rsc->actions, lh_rsc, order->lh_action_task);
	}

	if (lh_actions == NULL && lh_rsc != rh_rsc) {
	char *key = NULL;
	char *rsc_id = NULL;
	char *op_type = NULL;
	int interval = 0;

	parse_op_key(order->lh_action_task, &rsc_id, &op_type, &interval);
	key = generate_op_key(lh_rsc->id, op_type, interval);

	if (lh_rsc->fns->state(lh_rsc, TRUE) != RSC_ROLE_STOPPED \|\| safe_str_neq(op_type, RSC_STOP)) {
	pe_rsc_trace(lh_rsc, "No LH-Side (%s/%s) found for constraint %d with %s - creating",
	lh_rsc->id, order->lh_action_task, order->id, order->rh_action_task);
	lh_action = custom_action(lh_rsc, key, op_type, NULL, TRUE, TRUE, data_set);
	lh_actions = g_list_prepend(NULL, lh_action);
	} else {
	free(key);
	pe_rsc_trace(lh_rsc, "No LH-Side (%s/%s) found for constraint %d with %s - ignoring",
	lh_rsc->id, order->lh_action_task, order->id, order->rh_action_task);
	}

	free(op_type);
	free(rsc_id);
	}

	gIter = lh_actions;
	for (; gIter != NULL; gIter = gIter->next) {
	action_t lh_action_iter = (action_t ) gIter->data;

	if (rh_rsc == NULL && order->rh_action) {
	rh_rsc = order->rh_action->rsc;
	}
	if (rh_rsc) {
	rsc_order_then(lh_action_iter, rh_rsc, order);

	} else if (order->rh_action) {
	order_actions(lh_action_iter, order->rh_action, order->type);
	}
	}

	g_list_free(lh_actions);
	}

	extern gboolean update_action(action_t * action);

	gboolean
	stage7(pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;

	crm_trace("Applying ordering constraints");

	/* Don't ask me why, but apparently they need to be processed in
	* the order they were created in... go figure
	*
	* Also g_list_prepend() has horrendous performance characteristics
	* So we need to use g_list_prepend() and then reverse the list here
	*/
	data_set->ordering_constraints = g_list_reverse(data_set->ordering_constraints);

	gIter = data_set->ordering_constraints;
	for (; gIter != NULL; gIter = gIter->next) {
	order_constraint_t order = (order_constraint_t ) gIter->data;
	resource_t *rsc = order->lh_rsc;

	crm_trace("Applying ordering constraint: %d", order->id);

	if (rsc != NULL) {
	crm_trace("rsc_action-to-*");
	rsc_order_first(rsc, order, data_set);
	continue;
	}

	rsc = order->rh_rsc;
	if (rsc != NULL) {
	crm_trace("action-to-rsc_action");
	rsc_order_then(order->lh_action, rsc, order);

	} else {
	crm_trace("action-to-action");
	order_actions(order->lh_action, order->rh_action, order->type);
	}
	}

	crm_trace("Updating %d actions", g_list_length(data_set->actions));

	gIter = data_set->actions;
	for (; gIter != NULL; gIter = gIter->next) {
	action_t action = (action_t ) gIter->data;

	update_action(action);
	}

	crm_trace("Processing migrations");

	gIter = data_set->resources;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	rsc_migrate_reload(rsc, data_set);
	LogActions(rsc, data_set, FALSE);
	}

	return TRUE;
	}

	static gint
	sort_notify_entries(gconstpointer a, gconstpointer b)
	{
	int tmp;
	const notify_entry_t *entry_a = a;
	const notify_entry_t *entry_b = b;

	if (entry_a == NULL && entry_b == NULL) {
	return 0;
	}
	if (entry_a == NULL) {
	return 1;
	}
	if (entry_b == NULL) {
	return -1;
	}

	if (entry_a->rsc == NULL && entry_b->rsc == NULL) {
	return 0;
	}
	if (entry_a->rsc == NULL) {
	return 1;
	}
	if (entry_b->rsc == NULL) {
	return -1;
	}

	tmp = strcmp(entry_a->rsc->id, entry_b->rsc->id);
	if (tmp != 0) {
	return tmp;
	}

	if (entry_a->node == NULL && entry_b->node == NULL) {
	return 0;
	}
	if (entry_a->node == NULL) {
	return 1;
	}
	if (entry_b->node == NULL) {
	return -1;
	}

	return strcmp(entry_a->node->details->id, entry_b->node->details->id);
	}

	static void
	expand_list(GListPtr list, char rsc_list, char node_list)
	{
	GListPtr gIter = list;
	const char *uname = NULL;
	const char *rsc_id = NULL;
	const char *last_rsc_id = NULL;

	if (rsc_list) {
	*rsc_list = NULL;
	}

	if (list == NULL) {
	if (rsc_list) {
	*rsc_list = strdup(" ");
	}
	if (node_list) {
	*node_list = strdup(" ");
	}
	return;
	}

	if (node_list) {
	*node_list = NULL;
	}

	for (; gIter != NULL; gIter = gIter->next) {
	notify_entry_t entry = (notify_entry_t ) gIter->data;

	CRM_CHECK(entry != NULL, continue);
	CRM_CHECK(entry->rsc != NULL, continue);
	CRM_CHECK(node_list == NULL \|\| entry->node != NULL, continue);

	uname = NULL;
	rsc_id = entry->rsc->id;
	CRM_ASSERT(rsc_id != NULL);

	/* filter dups */
	if (safe_str_eq(rsc_id, last_rsc_id)) {
	continue;
	}
	last_rsc_id = rsc_id;

	if (rsc_list != NULL) {
	int existing_len = 0;
	int len = 2 + strlen(rsc_id); /* +1 space, +1 EOS */

	if (rsc_list && *rsc_list) {
	existing_len = strlen(*rsc_list);
	}

	crm_trace("Adding %s (%dc) at offset %d", rsc_id, len - 2, existing_len);
	rsc_list = realloc(rsc_list, len + existing_len);
	sprintf(*rsc_list + existing_len, "%s ", rsc_id);
	}

	if (entry->node != NULL) {
	uname = entry->node->details->uname;
	}

	if (node_list != NULL && uname) {
	int existing_len = 0;
	int len = 2 + strlen(uname);

	if (node_list && *node_list) {
	existing_len = strlen(*node_list);
	}

	crm_trace("Adding %s (%dc) at offset %d", uname, len - 2, existing_len);
	node_list = realloc(node_list, len + existing_len);
	sprintf(*node_list + existing_len, "%s ", uname);
	}
	}

	}

	static void
	dup_attr(gpointer key, gpointer value, gpointer user_data)
	{
	add_hash_param(user_data, key, value);
	}

	static action_t *
	pe_notify(resource_t * rsc, node_t * node, action_t * op, action_t * confirm,
	notify_data_t * n_data, pe_working_set_t * data_set)
	{
	char *key = NULL;
	action_t *trigger = NULL;
	const char *value = NULL;
	const char *task = NULL;

	if (op == NULL \|\| confirm == NULL) {
	pe_rsc_trace(rsc, "Op=%p confirm=%p", op, confirm);
	return NULL;
	}

	CRM_CHECK(node != NULL, return NULL);

	if (node->details->online == FALSE) {
	pe_rsc_trace(rsc, "Skipping notification for %s: node offline", rsc->id);
	return NULL;
	} else if (is_set(op->flags, pe_action_runnable) == FALSE) {
	pe_rsc_trace(rsc, "Skipping notification for %s: not runnable", op->uuid);
	return NULL;
	}

	value = g_hash_table_lookup(op->meta, "notify_type");
	task = g_hash_table_lookup(op->meta, "notify_operation");

	pe_rsc_trace(rsc, "Creating notify actions for %s: %s (%s-%s)", op->uuid, rsc->id, value, task);

	key = generate_notify_key(rsc->id, value, task);
	trigger = custom_action(rsc, key, op->task, node,
	is_set(op->flags, pe_action_optional), TRUE, data_set);
	g_hash_table_foreach(op->meta, dup_attr, trigger->meta);
	g_hash_table_foreach(n_data->keys, dup_attr, trigger->meta);

	/* pseudo_notify before notify */
	pe_rsc_trace(rsc, "Ordering %s before %s (%d->%d)", op->uuid, trigger->uuid, trigger->id, op->id);

	order_actions(op, trigger, pe_order_optional);
	order_actions(trigger, confirm, pe_order_optional);
	return trigger;
	}

	static void
	pe_post_notify(resource_t * rsc, node_t * node, notify_data_t * n_data, pe_working_set_t * data_set)
	{
	action_t *notify = NULL;

	CRM_CHECK(rsc != NULL, return);

	if (n_data->post == NULL) {
	return; /* Nothing to do */
	}

	notify = pe_notify(rsc, node, n_data->post, n_data->post_done, n_data, data_set);

	if (notify != NULL) {
	notify->priority = INFINITY;
	}

	if (n_data->post_done) {
	GListPtr gIter = rsc->actions;

	for (; gIter != NULL; gIter = gIter->next) {
	action_t mon = (action_t ) gIter->data;
	const char *interval = g_hash_table_lookup(mon->meta, "interval");

	if (interval == NULL \|\| safe_str_eq(interval, "0")) {
	pe_rsc_trace(rsc, "Skipping %s: interval", mon->uuid);
	continue;
	} else if (safe_str_eq(mon->task, "cancel")) {
	pe_rsc_trace(rsc, "Skipping %s: cancel", mon->uuid);
	continue;
	}

	order_actions(n_data->post_done, mon, pe_order_optional);
	}
	}
	}

	notify_data_t *
	create_notification_boundaries(resource_t * rsc, const char action, action_t start,
	action_t * end, pe_working_set_t * data_set)
	{
	/* Create the pseudo ops that preceed and follow the actual notifications */

	/*
	* Creates two sequences (conditional on start and end being supplied):
	* pre_notify -> pre_notify_complete -> start, and
	* end -> post_notify -> post_notify_complete
	*
	* 'start' and 'end' may be the same event or ${X} and ${X}ed as per clones
	*/
	char *key = NULL;
	notify_data_t *n_data = NULL;

	if (is_not_set(rsc->flags, pe_rsc_notify)) {
	return NULL;
	}

	n_data = calloc(1, sizeof(notify_data_t));
	n_data->action = action;
	n_data->keys =
	g_hash_table_new_full(crm_str_hash, g_str_equal, g_hash_destroy_str, g_hash_destroy_str);

	if (start) {
	/* create pre-event notification wrappers */
	key = generate_notify_key(rsc->id, "pre", start->task);
	n_data->pre =
	custom_action(rsc, key, RSC_NOTIFY, NULL, is_set(start->flags, pe_action_optional),
	TRUE, data_set);

	update_action_flags(n_data->pre, pe_action_pseudo);
	update_action_flags(n_data->pre, pe_action_runnable);

	add_hash_param(n_data->pre->meta, "notify_type", "pre");
	add_hash_param(n_data->pre->meta, "notify_operation", n_data->action);

	add_hash_param(n_data->pre->meta, "notify_key_type", "pre");
	add_hash_param(n_data->pre->meta, "notify_key_operation", start->task);

	/* create pre_notify_complete */
	key = generate_notify_key(rsc->id, "confirmed-pre", start->task);
	n_data->pre_done =
	custom_action(rsc, key, RSC_NOTIFIED, NULL, is_set(start->flags, pe_action_optional),
	TRUE, data_set);

	update_action_flags(n_data->pre_done, pe_action_pseudo);
	update_action_flags(n_data->pre_done, pe_action_runnable);

	add_hash_param(n_data->pre_done->meta, "notify_type", "pre");
	add_hash_param(n_data->pre_done->meta, "notify_operation", n_data->action);

	add_hash_param(n_data->pre_done->meta, "notify_key_type", "confirmed-pre");
	add_hash_param(n_data->pre_done->meta, "notify_key_operation", start->task);

	order_actions(n_data->pre_done, start, pe_order_optional);
	order_actions(n_data->pre, n_data->pre_done, pe_order_optional);
	}

	if (end) {
	/* create post-event notification wrappers */
	key = generate_notify_key(rsc->id, "post", end->task);
	n_data->post =
	custom_action(rsc, key, RSC_NOTIFY, NULL, is_set(end->flags, pe_action_optional), TRUE,
	data_set);

	n_data->post->priority = INFINITY;
	update_action_flags(n_data->post, pe_action_pseudo);
	if (is_set(end->flags, pe_action_runnable)) {
	update_action_flags(n_data->post, pe_action_runnable);
	} else {
	update_action_flags(n_data->post, pe_action_runnable \| pe_action_clear);
	}

	add_hash_param(n_data->post->meta, "notify_type", "post");
	add_hash_param(n_data->post->meta, "notify_operation", n_data->action);

	add_hash_param(n_data->post->meta, "notify_key_type", "post");
	add_hash_param(n_data->post->meta, "notify_key_operation", end->task);

	/* create post_notify_complete */
	key = generate_notify_key(rsc->id, "confirmed-post", end->task);
	n_data->post_done =
	custom_action(rsc, key, RSC_NOTIFIED, NULL, is_set(end->flags, pe_action_optional),
	TRUE, data_set);

	n_data->post_done->priority = INFINITY;
	update_action_flags(n_data->post_done, pe_action_pseudo);
	if (is_set(end->flags, pe_action_runnable)) {
	update_action_flags(n_data->post_done, pe_action_runnable);
	} else {
	update_action_flags(n_data->post_done, pe_action_runnable \| pe_action_clear);
	}

	add_hash_param(n_data->post_done->meta, "notify_type", "post");
	add_hash_param(n_data->post_done->meta, "notify_operation", n_data->action);

	add_hash_param(n_data->post_done->meta, "notify_key_type", "confirmed-post");
	add_hash_param(n_data->post_done->meta, "notify_key_operation", end->task);

	order_actions(end, n_data->post, pe_order_implies_then);
	order_actions(n_data->post, n_data->post_done, pe_order_implies_then);
	}

	if (start && end) {
	order_actions(n_data->pre_done, n_data->post, pe_order_optional);
	}

	if (safe_str_eq(action, RSC_STOP)) {
	action_t *all_stopped = get_pseudo_op(ALL_STOPPED, data_set);

	order_actions(n_data->post_done, all_stopped, pe_order_optional);
	}

	return n_data;
	}

	void
	collect_notification_data(resource_t * rsc, gboolean state, gboolean activity,
	notify_data_t * n_data)
	{

	if (rsc->children) {
	GListPtr gIter = rsc->children;

	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	collect_notification_data(child, state, activity, n_data);
	}
	return;
	}

	if (state) {
	notify_entry_t *entry = NULL;

	entry = calloc(1, sizeof(notify_entry_t));
	entry->rsc = rsc;
	if (rsc->running_on) {
	/* we only take the first one */
	entry->node = rsc->running_on->data;
	}

	pe_rsc_trace(rsc, "%s state: %s", rsc->id, role2text(rsc->role));

	switch (rsc->role) {
	case RSC_ROLE_STOPPED:
	n_data->inactive = g_list_prepend(n_data->inactive, entry);
	break;
	case RSC_ROLE_STARTED:
	n_data->active = g_list_prepend(n_data->active, entry);
	break;
	case RSC_ROLE_SLAVE:
	n_data->slave = g_list_prepend(n_data->slave, entry);
	break;
	case RSC_ROLE_MASTER:
	n_data->master = g_list_prepend(n_data->master, entry);
	break;
	default:
	crm_err("Unsupported notify role");
	free(entry);
	break;
	}
	}

	if (activity) {
	notify_entry_t *entry = NULL;
	enum action_tasks task;

	GListPtr gIter = rsc->actions;

	for (; gIter != NULL; gIter = gIter->next) {
	action_t op = (action_t ) gIter->data;

	if (is_set(op->flags, pe_action_optional) == FALSE && op->node != NULL) {

	entry = calloc(1, sizeof(notify_entry_t));
	entry->node = op->node;
	entry->rsc = rsc;

	task = text2task(op->task);
	switch (task) {
	case start_rsc:
	n_data->start = g_list_prepend(n_data->start, entry);
	break;
	case stop_rsc:
	n_data->stop = g_list_prepend(n_data->stop, entry);
	break;
	case action_promote:
	n_data->promote = g_list_prepend(n_data->promote, entry);
	break;
	case action_demote:
	n_data->demote = g_list_prepend(n_data->demote, entry);
	break;
	default:
	free(entry);
	break;
	}
	}
	}
	}
	}

	gboolean
	expand_notification_data(notify_data_t * n_data)
	{
	/* Expand the notification entries into a key=value hashtable
	* This hashtable is later used in action2xml()
	*/
	gboolean required = FALSE;
	char *rsc_list = NULL;
	char *node_list = NULL;

	if (n_data->stop) {
	n_data->stop = g_list_sort(n_data->stop, sort_notify_entries);
	}
	expand_list(n_data->stop, &rsc_list, &node_list);
	if (rsc_list != NULL && safe_str_neq(" ", rsc_list)) {
	if (safe_str_eq(n_data->action, RSC_STOP)) {
	required = TRUE;
	}
	}
	g_hash_table_insert(n_data->keys, strdup("notify_stop_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_stop_uname"), node_list);

	if (n_data->start) {
	n_data->start = g_list_sort(n_data->start, sort_notify_entries);
	if (rsc_list && safe_str_eq(n_data->action, RSC_START)) {
	required = TRUE;
	}
	}
	expand_list(n_data->start, &rsc_list, &node_list);
	g_hash_table_insert(n_data->keys, strdup("notify_start_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_start_uname"), node_list);

	if (n_data->demote) {
	n_data->demote = g_list_sort(n_data->demote, sort_notify_entries);
	if (safe_str_eq(n_data->action, RSC_DEMOTE)) {
	required = TRUE;
	}
	}

	expand_list(n_data->demote, &rsc_list, &node_list);
	g_hash_table_insert(n_data->keys, strdup("notify_demote_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_demote_uname"), node_list);

	if (n_data->promote) {
	n_data->promote = g_list_sort(n_data->promote, sort_notify_entries);
	if (safe_str_eq(n_data->action, RSC_PROMOTE)) {
	required = TRUE;
	}
	}
	expand_list(n_data->promote, &rsc_list, &node_list);
	g_hash_table_insert(n_data->keys, strdup("notify_promote_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_promote_uname"), node_list);

	if (n_data->active) {
	n_data->active = g_list_sort(n_data->active, sort_notify_entries);
	}
	expand_list(n_data->active, &rsc_list, &node_list);
	g_hash_table_insert(n_data->keys, strdup("notify_active_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_active_uname"), node_list);

	if (n_data->slave) {
	n_data->slave = g_list_sort(n_data->slave, sort_notify_entries);
	}
	expand_list(n_data->slave, &rsc_list, &node_list);
	g_hash_table_insert(n_data->keys, strdup("notify_slave_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_slave_uname"), node_list);

	if (n_data->master) {
	n_data->master = g_list_sort(n_data->master, sort_notify_entries);
	}
	expand_list(n_data->master, &rsc_list, &node_list);
	g_hash_table_insert(n_data->keys, strdup("notify_master_resource"), rsc_list);
	g_hash_table_insert(n_data->keys, strdup("notify_master_uname"), node_list);

	if (n_data->inactive) {
	n_data->inactive = g_list_sort(n_data->inactive, sort_notify_entries);
	}
	expand_list(n_data->inactive, &rsc_list, NULL);
	g_hash_table_insert(n_data->keys, strdup("notify_inactive_resource"), rsc_list);

	if (required && n_data->pre) {
	update_action_flags(n_data->pre, pe_action_optional \| pe_action_clear);
	update_action_flags(n_data->pre_done, pe_action_optional \| pe_action_clear);
	}

	if (required && n_data->post) {
	update_action_flags(n_data->post, pe_action_optional \| pe_action_clear);
	update_action_flags(n_data->post_done, pe_action_optional \| pe_action_clear);
	}
	return required;
	}

	void
	create_notifications(resource_t * rsc, notify_data_t * n_data, pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	action_t *stop = NULL;
	action_t *start = NULL;
	enum action_tasks task = text2task(n_data->action);

	if (rsc->children) {
	gIter = rsc->children;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	create_notifications(child, n_data, data_set);
	}
	return;
	}

	/* Copy notification details into standard ops */

	gIter = rsc->actions;
	for (; gIter != NULL; gIter = gIter->next) {
	action_t op = (action_t ) gIter->data;

	if (is_set(op->flags, pe_action_optional) == FALSE && op->node != NULL) {
	enum action_tasks t = text2task(op->task);

	switch (t) {
	case start_rsc:
	case stop_rsc:
	case action_promote:
	case action_demote:
	g_hash_table_foreach(n_data->keys, dup_attr, op->meta);
	break;
	default:
	break;
	}
	}
	}

	pe_rsc_trace(rsc, "Creating notificaitons for: %s.%s (%s->%s)",
	n_data->action, rsc->id, role2text(rsc->role), role2text(rsc->next_role));

	stop = find_first_action(rsc->actions, NULL, RSC_STOP, NULL);
	start = find_first_action(rsc->actions, NULL, RSC_START, NULL);

	/* stop / demote */
	if (rsc->role != RSC_ROLE_STOPPED) {
	if (task == stop_rsc \|\| task == action_demote) {
	gIter = rsc->running_on;
	for (; gIter != NULL; gIter = gIter->next) {
	node_t current_node = (node_t ) gIter->data;

	pe_notify(rsc, current_node, n_data->pre, n_data->pre_done, n_data, data_set);
	if (task == action_demote \|\| stop == NULL
	\|\| is_set(stop->flags, pe_action_optional)) {
	pe_post_notify(rsc, current_node, n_data, data_set);
	}
	}
	}
	}

	/* start / promote */
	if (rsc->next_role != RSC_ROLE_STOPPED) {
	if (rsc->allocated_to == NULL) {
	pe_proc_err("Next role '%s' but %s is not allocated", role2text(rsc->next_role),
	rsc->id);

	} else if (task == start_rsc \|\| task == action_promote) {
	if (task != start_rsc \|\| start == NULL \|\| is_set(start->flags, pe_action_optional)) {
	pe_notify(rsc, rsc->allocated_to, n_data->pre, n_data->pre_done, n_data, data_set);
	}
	pe_post_notify(rsc, rsc->allocated_to, n_data, data_set);
	}
	}
	}

	void
	free_notification_data(notify_data_t * n_data)
	{
	if (n_data == NULL) {
	return;
	}

	g_list_free_full(n_data->stop, free);
	g_list_free_full(n_data->start, free);
	g_list_free_full(n_data->demote, free);
	g_list_free_full(n_data->promote, free);
	g_list_free_full(n_data->master, free);
	g_list_free_full(n_data->slave, free);
	g_list_free_full(n_data->active, free);
	g_list_free_full(n_data->inactive, free);
	g_hash_table_destroy(n_data->keys);
	free(n_data);
	}

	int transition_id = -1;

	/*
	* Create a dependency graph to send to the transitioner (via the CRMd)
	*/
	gboolean
	stage8(pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	const char *value = NULL;

	transition_id++;
	crm_trace("Creating transition graph %d.", transition_id);

	data_set->graph = create_xml_node(NULL, XML_TAG_GRAPH);

	value = pe_pref(data_set->config_hash, "cluster-delay");
	crm_xml_add(data_set->graph, "cluster-delay", value);

	value = pe_pref(data_set->config_hash, "stonith-timeout");
	crm_xml_add(data_set->graph, "stonith-timeout", value);

	crm_xml_add(data_set->graph, "failed-stop-offset", "INFINITY");

	if (is_set(data_set->flags, pe_flag_start_failure_fatal)) {
	crm_xml_add(data_set->graph, "failed-start-offset", "INFINITY");
	} else {
	crm_xml_add(data_set->graph, "failed-start-offset", "1");
	}

	value = pe_pref(data_set->config_hash, "batch-limit");
	crm_xml_add(data_set->graph, "batch-limit", value);

	crm_xml_add_int(data_set->graph, "transition_id", transition_id);

	value = pe_pref(data_set->config_hash, "migration-limit");
	if (crm_int_helper(value, NULL) > 0) {
	crm_xml_add(data_set->graph, "migration-limit", value);
	}

	/* errors...
	slist_iter(action, action_t, action_list, lpc,
	if(action->optional == FALSE && action->runnable == FALSE) {
	print_action("Ignoring", action, TRUE);
	}
	);
	*/

	gIter = data_set->resources;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t rsc = (resource_t ) gIter->data;

	pe_rsc_trace(rsc, "processing actions for rsc=%s", rsc->id);
	rsc->cmds->expand(rsc, data_set);
	}

	crm_log_xml_trace(data_set->graph, "created resource-driven action list");

	/* catch any non-resource specific actions */
	crm_trace("processing non-resource actions");

	gIter = data_set->actions;
	for (; gIter != NULL; gIter = gIter->next) {
	action_t action = (action_t ) gIter->data;

	if (action->rsc
	&& action->node
	&& action->node->details->shutdown
	&& is_not_set(data_set->flags, pe_flag_maintenance_mode)
	&& is_not_set(action->flags, pe_action_optional)
	&& is_not_set(action->flags, pe_action_runnable)
	&& crm_str_eq(action->task, RSC_STOP, TRUE)
	) {
	/* Eventually we should just ignore the 'fence' case
	* But for now its the best way to detect (in CTS) when
	* CIB resource updates are being lost
	*/
	crm_crit("Cannot %s node '%s' because of %s:%s%s",
	action->node->details->unclean?"fence":"shut down",
	action->node->details->uname, action->rsc->id,
	is_not_set(action->rsc->flags, pe_rsc_managed)?" unmanaged":" blocked",
	is_set(action->rsc->flags, pe_rsc_failed)?" failed":"");
	}

	graph_element_from_action(action, data_set);
	}

	crm_log_xml_trace(data_set->graph, "created generic action list");
	crm_trace("Created transition graph %d.", transition_id);

	return TRUE;
	}

	void
	cleanup_alloc_calculations(pe_working_set_t * data_set)
	{
	if (data_set == NULL) {
	return;
	}

	crm_trace("deleting %d order cons: %p",
	g_list_length(data_set->ordering_constraints), data_set->ordering_constraints);
	pe_free_ordering(data_set->ordering_constraints);
	data_set->ordering_constraints = NULL;

	crm_trace("deleting %d node cons: %p",
	g_list_length(data_set->placement_constraints), data_set->placement_constraints);
	pe_free_rsc_to_node(data_set->placement_constraints);
	data_set->placement_constraints = NULL;

	crm_trace("deleting %d inter-resource cons: %p",
	g_list_length(data_set->colocation_constraints), data_set->colocation_constraints);
	g_list_free_full(data_set->colocation_constraints, free);
	data_set->colocation_constraints = NULL;

	crm_trace("deleting %d ticket deps: %p",
	g_list_length(data_set->ticket_constraints), data_set->ticket_constraints);
	g_list_free_full(data_set->ticket_constraints, free);
	data_set->ticket_constraints = NULL;

	cleanup_calculations(data_set);
	}

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