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	diff --git a/lib/pacemaker/Makefile.am b/lib/pacemaker/Makefile.am
	index 1f691aec3e..9403814b5b 100644
	--- a/lib/pacemaker/Makefile.am
	+++ b/lib/pacemaker/Makefile.am
	@@ -1,62 +1,63 @@
	#
	# Copyright 2004-2021 the Pacemaker project contributors
	#
	# The version control history for this file may have further details.
	#
	# This source code is licensed under the GNU General Public License version 2
	# or later (GPLv2+) WITHOUT ANY WARRANTY.
	#

	include $(top_srcdir)/mk/common.mk

	AM_CPPFLAGS += -I$(top_builddir) -I$(top_srcdir)

	noinst_HEADERS = libpacemaker_private.h

	## libraries
	lib_LTLIBRARIES = libpacemaker.la

	## SOURCES

	libpacemaker_la_LDFLAGS = -version-info 4:0:3

	libpacemaker_la_CFLAGS = $(CFLAGS_HARDENED_LIB)
	libpacemaker_la_LDFLAGS += $(LDFLAGS_HARDENED_LIB)

	libpacemaker_la_LIBADD = $(top_builddir)/lib/pengine/libpe_status.la \
	$(top_builddir)/lib/cib/libcib.la \
	$(top_builddir)/lib/lrmd/liblrmd.la \
	$(top_builddir)/lib/common/libcrmcommon.la
	# -L$(top_builddir)/lib/pils -lpils -export-dynamic -module -avoid-version
	# Use += rather than backlashed continuation lines for parsing by bumplibs
	libpacemaker_la_SOURCES =
	libpacemaker_la_SOURCES += pcmk_acl.c
	libpacemaker_la_SOURCES += pcmk_cluster_queries.c
	libpacemaker_la_SOURCES += pcmk_fence.c
	libpacemaker_la_SOURCES += pcmk_graph_consumer.c
	libpacemaker_la_SOURCES += pcmk_graph_logging.c
	libpacemaker_la_SOURCES += pcmk_graph_producer.c
	libpacemaker_la_SOURCES += pcmk_output.c
	libpacemaker_la_SOURCES += pcmk_output_utils.c
	libpacemaker_la_SOURCES += pcmk_resource.c
	libpacemaker_la_SOURCES += pcmk_sched_actions.c
	libpacemaker_la_SOURCES += pcmk_sched_allocate.c
	libpacemaker_la_SOURCES += pcmk_sched_bundle.c
	libpacemaker_la_SOURCES += pcmk_sched_clone.c
	libpacemaker_la_SOURCES += pcmk_sched_colocation.c
	libpacemaker_la_SOURCES += pcmk_sched_constraints.c
	libpacemaker_la_SOURCES += pcmk_sched_fencing.c
	libpacemaker_la_SOURCES += pcmk_sched_group.c
	libpacemaker_la_SOURCES += pcmk_sched_location.c
	libpacemaker_la_SOURCES += pcmk_sched_messages.c
	libpacemaker_la_SOURCES += pcmk_sched_native.c
	libpacemaker_la_SOURCES += pcmk_sched_nodes.c
	libpacemaker_la_SOURCES += pcmk_sched_notif.c
	libpacemaker_la_SOURCES += pcmk_sched_ordering.c
	+libpacemaker_la_SOURCES += pcmk_sched_probes.c
	libpacemaker_la_SOURCES += pcmk_sched_promotable.c
	libpacemaker_la_SOURCES += pcmk_sched_remote.c
	libpacemaker_la_SOURCES += pcmk_sched_resource.c
	libpacemaker_la_SOURCES += pcmk_sched_tickets.c
	libpacemaker_la_SOURCES += pcmk_sched_transition.c
	libpacemaker_la_SOURCES += pcmk_sched_utilization.c
	libpacemaker_la_SOURCES += pcmk_simulate.c
	diff --git a/lib/pacemaker/pcmk_sched_allocate.c b/lib/pacemaker/pcmk_sched_allocate.c
	index 6603f6246b..5057cfb2f9 100644
	--- a/lib/pacemaker/pcmk_sched_allocate.c
	+++ b/lib/pacemaker/pcmk_sched_allocate.c
	@@ -1,1973 +1,1507 @@
	/*
	* Copyright 2004-2021 the Pacemaker project contributors
	*
	* The version control history for this file may have further details.
	*
	* This source code is licensed under the GNU General Public License version 2
	* or later (GPLv2+) WITHOUT ANY WARRANTY.
	*/

	#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 <crm/common/xml_internal.h>

	#include <glib.h>

	#include <crm/pengine/status.h>
	#include <pacemaker-internal.h>
	#include "libpacemaker_private.h"

	CRM_TRACE_INIT_DATA(pacemaker);

	extern bool pcmk__is_daemon;

	void set_alloc_actions(pe_working_set_t * data_set);
	extern void ReloadRsc(pe_resource_t * rsc, pe_node_t node, pe_working_set_t data_set);
	extern gboolean DeleteRsc(pe_resource_t * rsc, pe_node_t * node, gboolean optional, pe_working_set_t * data_set);

	resource_alloc_functions_t resource_class_alloc_functions[] = {
	{
	pcmk__native_merge_weights,
	pcmk__native_allocate,
	native_create_actions,
	native_create_probe,
	native_internal_constraints,
	native_rsc_colocation_lh,
	native_rsc_colocation_rh,
	pcmk__colocated_resources,
	native_rsc_location,
	native_action_flags,
	native_update_actions,
	pcmk__output_resource_actions,
	native_expand,
	native_append_meta,
	},
	{
	pcmk__group_merge_weights,
	pcmk__group_allocate,
	group_create_actions,
	native_create_probe,
	group_internal_constraints,
	group_rsc_colocation_lh,
	group_rsc_colocation_rh,
	pcmk__group_colocated_resources,
	group_rsc_location,
	group_action_flags,
	group_update_actions,
	pcmk__output_resource_actions,
	group_expand,
	group_append_meta,
	},
	{
	pcmk__native_merge_weights,
	pcmk__clone_allocate,
	clone_create_actions,
	clone_create_probe,
	clone_internal_constraints,
	clone_rsc_colocation_lh,
	clone_rsc_colocation_rh,
	pcmk__colocated_resources,
	clone_rsc_location,
	clone_action_flags,
	pcmk__multi_update_actions,
	pcmk__output_resource_actions,
	clone_expand,
	clone_append_meta,
	},
	{
	pcmk__native_merge_weights,
	pcmk__bundle_allocate,
	pcmk__bundle_create_actions,
	pcmk__bundle_create_probe,
	pcmk__bundle_internal_constraints,
	pcmk__bundle_rsc_colocation_lh,
	pcmk__bundle_rsc_colocation_rh,
	pcmk__colocated_resources,
	pcmk__bundle_rsc_location,
	pcmk__bundle_action_flags,
	pcmk__multi_update_actions,
	pcmk__output_bundle_actions,
	pcmk__bundle_expand,
	pcmk__bundle_append_meta,
	}
	};

	static gboolean
	check_rsc_parameters(pe_resource_t * rsc, pe_node_t * node, xmlNode * rsc_entry,
	gboolean active_here, pe_working_set_t * data_set)
	{
	int attr_lpc = 0;
	gboolean force_restart = FALSE;
	gboolean delete_resource = FALSE;
	gboolean changed = 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 < PCMK__NELEM(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 /* i.e. NULL */
	\|\| pcmk__str_eq(value, old_value, pcmk__str_none)) {
	continue;
	}

	changed = TRUE;
	trigger_unfencing(rsc, node, "Device definition changed", NULL, data_set);
	if (active_here) {
	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);
	pe__set_resource_flags(rsc, pe_rsc_start_pending);
	delete_resource = TRUE;

	} else if (changed) {
	delete_resource = TRUE;
	}
	return delete_resource;
	}

	static void
	CancelXmlOp(pe_resource_t * rsc, xmlNode * xml_op, pe_node_t * active_node,
	const char reason, pe_working_set_t data_set)
	{
	guint interval_ms = 0;
	pe_action_t *cancel = NULL;

	const char *task = NULL;
	const char *call_id = 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);
	crm_element_value_ms(xml_op, XML_LRM_ATTR_INTERVAL_MS, &interval_ms);

	crm_info("Action " PCMK__OP_FMT " on %s will be stopped: %s",
	rsc->id, task, interval_ms,
	active_node->details->uname, (reason? reason : "unknown"));

	cancel = pcmk__new_cancel_action(rsc, task, interval_ms, active_node);
	add_hash_param(cancel->meta, XML_LRM_ATTR_CALLID, call_id);
	pcmk__new_ordering(rsc, stop_key(rsc), NULL, rsc, NULL, cancel,
	pe_order_optional, data_set);
	}

	static gboolean
	check_action_definition(pe_resource_t * rsc, pe_node_t * active_node, xmlNode * xml_op,
	pe_working_set_t * data_set)
	{
	char *key = NULL;
	guint interval_ms = 0;
	const op_digest_cache_t *digest_data = NULL;
	gboolean did_change = FALSE;

	const char *task = crm_element_value(xml_op, XML_LRM_ATTR_TASK);
	const char *digest_secure = NULL;

	CRM_CHECK(active_node != NULL, return FALSE);

	crm_element_value_ms(xml_op, XML_LRM_ATTR_INTERVAL_MS, &interval_ms);
	if (interval_ms > 0) {
	xmlNode *op_match = NULL;

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

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

	if ((op_match == NULL)
	&& pcmk_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;
	}
	free(key);
	key = NULL;
	}

	crm_trace("Testing " PCMK__OP_FMT " on %s",
	rsc->id, task, interval_ms, active_node->details->uname);
	if ((interval_ms == 0) && pcmk__str_eq(task, RSC_STATUS, pcmk__str_casei)) {
	/* Reload based on the start action not a probe */
	task = RSC_START;

	} else if ((interval_ms == 0) && pcmk__str_eq(task, RSC_MIGRATED, pcmk__str_casei)) {
	/* Reload based on the start action not a migrate */
	task = RSC_START;
	} else if ((interval_ms == 0) && pcmk__str_eq(task, RSC_PROMOTE, pcmk__str_casei)) {
	/* Reload based on the start action not a promote */
	task = RSC_START;
	}

	digest_data = rsc_action_digest_cmp(rsc, xml_op, active_node, data_set);

	if (pcmk_is_set(data_set->flags, pe_flag_sanitized)) {
	digest_secure = crm_element_value(xml_op, XML_LRM_ATTR_SECURE_DIGEST);
	}

	if(digest_data->rc != RSC_DIGEST_MATCH
	&& digest_secure
	&& digest_data->digest_secure_calc
	&& strcmp(digest_data->digest_secure_calc, digest_secure) == 0) {
	if (!pcmk__is_daemon && data_set->priv != NULL) {
	pcmk__output_t *out = data_set->priv;
	out->info(out, "Only 'private' parameters to "
	PCMK__OP_FMT " on %s changed: %s", rsc->id, task,
	interval_ms, active_node->details->uname,
	crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));
	}

	} else if (digest_data->rc == RSC_DIGEST_RESTART) {
	/* Changes that force a restart */
	pe_action_t *required = NULL;

	did_change = TRUE;
	key = pcmk__op_key(rsc->id, task, interval_ms);
	crm_log_xml_info(digest_data->params_restart, "params:restart");
	required = custom_action(rsc, key, task, NULL, FALSE, TRUE, data_set);
	pe_action_set_reason(required, "resource definition change", true);
	trigger_unfencing(rsc, active_node, "Device parameters changed", NULL, data_set);

	} else if ((digest_data->rc == RSC_DIGEST_ALL) \|\| (digest_data->rc == RSC_DIGEST_UNKNOWN)) {
	// Changes that can potentially be handled by an agent reload
	const char *digest_restart = crm_element_value(xml_op, XML_LRM_ATTR_RESTART_DIGEST);

	did_change = TRUE;
	trigger_unfencing(rsc, active_node, "Device parameters changed (reload)", NULL, data_set);
	crm_log_xml_info(digest_data->params_all, "params:reload");
	key = pcmk__op_key(rsc->id, task, interval_ms);

	if (interval_ms > 0) {
	pe_action_t *op = NULL;

	#if 0
	/* Always reload/restart the entire resource */
	ReloadRsc(rsc, active_node, data_set);
	#else
	/* Re-sending the recurring op is sufficient - the old one will be cancelled automatically */
	op = custom_action(rsc, key, task, active_node, TRUE, TRUE, data_set);
	pe__set_action_flags(op, pe_action_reschedule);
	#endif

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

	/* Reload this resource */
	ReloadRsc(rsc, active_node, data_set);
	free(key);

	} else {
	pe_action_t *required = NULL;
	pe_rsc_trace(rsc, "Resource %s doesn't support agent reloads",
	rsc->id);

	/* Re-send the start/demote/promote op
	* Recurring ops will be detected independently
	*/
	required = custom_action(rsc, key, task, NULL, FALSE, TRUE,
	data_set);
	pe_action_set_reason(required, "resource definition change", true);
	}
	}

	return did_change;
	}

	/*!
	* \internal
	* \brief Do deferred action checks after allocation
	*
	* \param[in] data_set Working set for cluster
	*/
	static void
	check_params(pe_resource_t rsc, pe_node_t node, xmlNode *rsc_op,
	enum pe_check_parameters check, pe_working_set_t *data_set)
	{
	const char *reason = NULL;
	op_digest_cache_t *digest_data = NULL;

	switch (check) {
	case pe_check_active:
	if (check_action_definition(rsc, node, rsc_op, data_set)
	&& pe_get_failcount(node, rsc, NULL, pe_fc_effective, NULL,
	data_set)) {

	reason = "action definition changed";
	}
	break;

	case pe_check_last_failure:
	digest_data = rsc_action_digest_cmp(rsc, rsc_op, node, data_set);
	switch (digest_data->rc) {
	case RSC_DIGEST_UNKNOWN:
	crm_trace("Resource %s history entry %s on %s has no digest to compare",
	rsc->id, ID(rsc_op), node->details->id);
	break;
	case RSC_DIGEST_MATCH:
	break;
	default:
	reason = "resource parameters have changed";
	break;
	}
	break;
	}

	if (reason) {
	pe__clear_failcount(rsc, node, reason, data_set);
	}
	}

	static void
	check_actions_for(xmlNode * rsc_entry, pe_resource_t * rsc, pe_node_t * node, pe_working_set_t * data_set)
	{
	GList *gIter = NULL;
	int offset = -1;
	int stop_index = 0;
	int start_index = 0;

	const char *task = NULL;

	xmlNode *rsc_op = NULL;
	GList *op_list = NULL;
	GList *sorted_op_list = NULL;

	CRM_CHECK(node != NULL, return);

	if (pcmk_is_set(rsc->flags, pe_rsc_orphan)) {
	pe_resource_t *parent = uber_parent(rsc);
	if(parent == NULL
	\|\| pe_rsc_is_clone(parent) == FALSE
	\|\| pcmk_is_set(parent->flags, pe_rsc_unique)) {
	pe_rsc_trace(rsc, "Skipping param check for %s and deleting: orphan", rsc->id);
	DeleteRsc(rsc, node, FALSE, data_set);
	} else {
	pe_rsc_trace(rsc, "Skipping param check for %s (orphan clone)", rsc->id);
	}
	return;

	} else if (pe_find_node_id(rsc->running_on, node->details->id) == NULL) {
	if (check_rsc_parameters(rsc, node, rsc_entry, FALSE, data_set)) {
	DeleteRsc(rsc, node, FALSE, data_set);
	}
	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, TRUE, data_set)) {
	DeleteRsc(rsc, node, FALSE, data_set);
	}

	for (rsc_op = pcmk__xe_first_child(rsc_entry); rsc_op != NULL;
	rsc_op = pcmk__xe_next(rsc_op)) {

	if (pcmk__str_eq((const char *)rsc_op->name, XML_LRM_TAG_RSC_OP, pcmk__str_none)) {
	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;
	guint interval_ms = 0;

	offset++;

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

	task = crm_element_value(rsc_op, XML_LRM_ATTR_TASK);
	crm_element_value_ms(rsc_op, XML_LRM_ATTR_INTERVAL_MS, &interval_ms);

	if ((interval_ms > 0) &&
	(pcmk_is_set(rsc->flags, pe_rsc_maintenance) \|\| node->details->maintenance)) {
	// Maintenance mode cancels recurring operations
	CancelXmlOp(rsc, rsc_op, node, "maintenance mode", data_set);

	} else if ((interval_ms > 0) \|\| pcmk__strcase_any_of(task, RSC_STATUS, RSC_START,
	RSC_PROMOTE, RSC_MIGRATED, NULL)) {
	/* If a resource operation failed, and the operation's definition
	* has changed, clear any fail count so they can be retried fresh.
	*/

	if (pe__bundle_needs_remote_name(rsc, data_set)) {
	/* We haven't allocated resources to nodes yet, so if the
	* REMOTE_CONTAINER_HACK is used, we may calculate the digest
	* based on the literal "#uname" value rather than the properly
	* substituted value. That would mistakenly make the action
	* definition appear to have been changed. Defer the check until
	* later in this case.
	*/
	pe__add_param_check(rsc_op, rsc, node, pe_check_active,
	data_set);

	} else if (check_action_definition(rsc, node, rsc_op, data_set)
	&& pe_get_failcount(node, rsc, NULL, pe_fc_effective, NULL,
	data_set)) {
	pe__clear_failcount(rsc, node, "action definition changed",
	data_set);
	}
	}
	}
	g_list_free(sorted_op_list);
	}

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

	if (id == NULL) {
	return NULL;
	}

	if (rsc == NULL) {
	if (data_set == NULL) {
	return NULL;
	}
	for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	pe_resource_t child = (pe_resource_t ) gIter->data;

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

	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) {
	pe_resource_t child = (pe_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;
	pe_node_t *node = NULL;
	xmlNode *lrm_rscs = NULL;
	xmlNode *status = pcmk_find_cib_element(data_set->input,
	XML_CIB_TAG_STATUS);
	xmlNode *node_state = NULL;

	for (node_state = pcmk__xe_first_child(status); node_state != NULL;
	node_state = pcmk__xe_next(node_state)) {

	if (pcmk__str_eq((const char *)node_state->name, XML_CIB_TAG_STATE,
	pcmk__str_none)) {
	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;

	/* Still need to check actions for a maintenance node to cancel existing monitor operations */
	} else if (!pcmk__node_available(node) && !node->details->maintenance) {
	crm_trace("Skipping param check for %s: can't run resources",
	node->details->uname);
	continue;
	}

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

	for (rsc_entry = pcmk__xe_first_child(lrm_rscs);
	rsc_entry != NULL;
	rsc_entry = pcmk__xe_next(rsc_entry)) {

	if (pcmk__str_eq((const char *)rsc_entry->name, XML_LRM_TAG_RESOURCE, pcmk__str_none)) {

	if (xml_has_children(rsc_entry)) {
	GList *gIter = NULL;
	GList *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) {
	pe_resource_t rsc = (pe_resource_t ) gIter->data;

	if (rsc->variant != pe_native) {
	continue;
	}
	check_actions_for(rsc_entry, rsc, node, data_set);
	}
	g_list_free(result);
	}
	}
	}
	}
	}
	}
	}

	static gboolean
	failcount_clear_action_exists(pe_node_t * node, pe_resource_t * rsc)
	{
	gboolean rc = FALSE;
	GList *list = pe__resource_actions(rsc, node, CRM_OP_CLEAR_FAILCOUNT, TRUE);

	if (list) {
	rc = TRUE;
	}
	g_list_free(list);
	return rc;
	}

	static void
	common_apply_stickiness(pe_resource_t * rsc, pe_node_t * node, pe_working_set_t * data_set)
	{
	if (rsc->children) {
	GList *gIter = rsc->children;

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

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

	if (pcmk_is_set(rsc->flags, pe_rsc_managed)
	&& rsc->stickiness != 0 && pcmk__list_of_1(rsc->running_on)) {
	pe_node_t *current = pe_find_node_id(rsc->running_on, node->details->id);
	pe_node_t *match = pe_hash_table_lookup(rsc->allowed_nodes, node->details->id);

	if (current == NULL) {

	} else if ((match != NULL)
	\|\| pcmk_is_set(data_set->flags, pe_flag_symmetric_cluster)) {
	pe_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;
	pe_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);
	}
	}
	}

	/* Check the migration threshold only if a failcount clear action
	* has not already been placed for this resource on the node.
	* There is no sense in potentially forcing the resource from this
	* node if the failcount is being reset anyway.
	*
	* @TODO A clear_failcount operation can be scheduled in stage4() via
	* check_actions_for(), or in stage5() via check_params(). This runs in
	* stage2(), so it cannot detect those, meaning we might check the migration
	* threshold when we shouldn't -- worst case, we stop or move the resource,
	* then move it back next transition.
	*/
	if (failcount_clear_action_exists(node, rsc) == FALSE) {
	pe_resource_t *failed = NULL;

	if (pcmk__threshold_reached(rsc, node, data_set, &failed)) {
	resource_location(failed, node, -INFINITY, "__fail_limit__",
	data_set);
	}
	}
	}

	void
	complex_set_cmds(pe_resource_t * rsc)
	{
	GList *gIter = rsc->children;

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

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

	complex_set_cmds(child_rsc);
	}
	}

	void
	set_alloc_actions(pe_working_set_t * data_set)
	{

	GList *gIter = data_set->resources;

	for (; gIter != NULL; gIter = gIter->next) {
	pe_resource_t rsc = (pe_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;
	}

	if (pcmk__starts_with(key, "#health")) {
	int score;

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

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

	static gboolean
	apply_system_health(pe_working_set_t * data_set)
	{
	GList *gIter = NULL;
	const char *health_strategy = pe_pref(data_set->config_hash, "node-health-strategy");
	int base_health = 0;

	if (pcmk__str_eq(health_strategy, "none", pcmk__str_null_matches \| pcmk__str_casei)) {
	/* Prevent any accidental health -> score translation */
	pcmk__score_red = 0;
	pcmk__score_yellow = 0;
	pcmk__score_green = 0;
	return TRUE;

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

	/* Resources on nodes which have health values of red are
	* weighted away from that node.
	*/
	pcmk__score_red = -INFINITY;
	pcmk__score_yellow = 0;
	pcmk__score_green = 0;

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

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

	} else if (pcmk__str_eq(health_strategy, "progressive", pcmk__str_casei)) {
	/* Same as the above, but use the r/y/g scores provided by the user
	* Defaults are provided by the pe_prefs table
	* Also, custom health "base score" can be used
	*/
	base_health = char2score(pe_pref(data_set->config_hash,
	"node-health-base"));

	} else if (pcmk__str_eq(health_strategy, "custom", pcmk__str_casei)) {

	/* Requires the admin to configure the rsc_location constaints for
	* processing the stored health scores
	*/
	/* TODO: Check for the existence 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 = base_health;
	pe_node_t node = (pe_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 location constraint so
	* that the weight will be added later on.
	*/
	if (system_health != 0) {

	GList *gIter2 = data_set->resources;

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

	pcmk__new_location(health_strategy, rsc, system_health, NULL,
	node, data_set);
	}
	}
	}

	return TRUE;
	}

	gboolean
	stage0(pe_working_set_t * data_set)
	{
	if (data_set->input == NULL) {
	return FALSE;
	}

	if (!pcmk_is_set(data_set->flags, pe_flag_have_status)) {
	crm_trace("Calculating status");
	cluster_status(data_set);
	}

	set_alloc_actions(data_set);
	apply_system_health(data_set);
	pcmk__unpack_constraints(data_set);

	return TRUE;
	}

	/*
	* Check nodes for resources started outside of the LRM
	*/
	gboolean
	probe_resources(pe_working_set_t * data_set)
	{
	for (GList *gIter = data_set->nodes; gIter != NULL; gIter = gIter->next) {
	pe_node_t node = (pe_node_t ) gIter->data;
	const char *probed = NULL;

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

	if (pcmk__is_failed_remote_node(node)) {
	pe_fence_node(data_set, node, "the connection is unrecoverable", FALSE);
	}
	continue;

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

	} else if (node->details->rsc_discovery_enabled == FALSE) {
	/* resource discovery is disabled for this node */
	continue;
	}

	/* This is no longer needed for live clusters, since the probe_complete
	* node attribute will never be in the CIB. However this is still useful
	* for processing old saved CIBs (< 1.1.14), including the
	* reprobe-target_rc regression test.
	*/
	probed = pe_node_attribute_raw(node, CRM_OP_PROBED);
	if (probed != NULL && crm_is_true(probed) == FALSE) {
	pe_action_t *probe_op = custom_action(NULL, crm_strdup_printf("%s-%s", CRM_OP_REPROBE, node->details->uname),
	CRM_OP_REPROBE, node, FALSE, TRUE, data_set);

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

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

	rsc->cmds->create_probe(rsc, node, NULL, FALSE, data_set);
	}
	}
	return TRUE;
	}

	static void
	rsc_discover_filter(pe_resource_t rsc, pe_node_t node)
	{
	pe_resource_t *top = uber_parent(rsc);
	pe_node_t *match;

	if (rsc->exclusive_discover == FALSE && top->exclusive_discover == FALSE) {
	return;
	}

	g_list_foreach(rsc->children, (GFunc) rsc_discover_filter, node);

	match = g_hash_table_lookup(rsc->allowed_nodes, node->details->id);
	if (match && match->rsc_discover_mode != pe_discover_exclusive) {
	match->weight = -INFINITY;
	}
	}

	static time_t
	shutdown_time(pe_node_t node, pe_working_set_t data_set)
	{
	const char *shutdown = pe_node_attribute_raw(node, XML_CIB_ATTR_SHUTDOWN);
	time_t result = 0;

	if (shutdown) {
	long long result_ll;

	if (pcmk__scan_ll(shutdown, &result_ll, 0LL) == pcmk_rc_ok) {
	result = (time_t) result_ll;
	}
	}
	return result? result : get_effective_time(data_set);
	}

	static void
	apply_shutdown_lock(pe_resource_t rsc, pe_working_set_t data_set)
	{
	const char *class;

	// Only primitives and (uncloned) groups may be locked
	if (rsc->variant == pe_group) {
	g_list_foreach(rsc->children, (GFunc) apply_shutdown_lock, data_set);
	} else if (rsc->variant != pe_native) {
	return;
	}

	// Fence devices and remote connections can't be locked
	class = crm_element_value(rsc->xml, XML_AGENT_ATTR_CLASS);
	if (pcmk__str_eq(class, PCMK_RESOURCE_CLASS_STONITH, pcmk__str_null_matches)
	\|\| pe__resource_is_remote_conn(rsc, data_set)) {
	return;
	}

	if (rsc->lock_node != NULL) {
	// The lock was obtained from resource history

	if (rsc->running_on != NULL) {
	/* The resource was started elsewhere even though it is now
	* considered locked. This shouldn't be possible, but as a
	* failsafe, we don't want to disturb the resource now.
	*/
	pe_rsc_info(rsc,
	"Cancelling shutdown lock because %s is already active",
	rsc->id);
	pe__clear_resource_history(rsc, rsc->lock_node, data_set);
	rsc->lock_node = NULL;
	rsc->lock_time = 0;
	}

	// Only a resource active on exactly one node can be locked
	} else if (pcmk__list_of_1(rsc->running_on)) {
	pe_node_t *node = rsc->running_on->data;

	if (node->details->shutdown) {
	if (node->details->unclean) {
	pe_rsc_debug(rsc, "Not locking %s to unclean %s for shutdown",
	rsc->id, node->details->uname);
	} else {
	rsc->lock_node = node;
	rsc->lock_time = shutdown_time(node, data_set);
	}
	}
	}

	if (rsc->lock_node == NULL) {
	// No lock needed
	return;
	}

	if (data_set->shutdown_lock > 0) {
	time_t lock_expiration = rsc->lock_time + data_set->shutdown_lock;

	pe_rsc_info(rsc, "Locking %s to %s due to shutdown (expires @%lld)",
	rsc->id, rsc->lock_node->details->uname,
	(long long) lock_expiration);
	pe__update_recheck_time(++lock_expiration, data_set);
	} else {
	pe_rsc_info(rsc, "Locking %s to %s due to shutdown",
	rsc->id, rsc->lock_node->details->uname);
	}

	// If resource is locked to one node, ban it from all other nodes
	for (GList *item = data_set->nodes; item != NULL; item = item->next) {
	pe_node_t *node = item->data;

	if (strcmp(node->details->uname, rsc->lock_node->details->uname)) {
	resource_location(rsc, node, -CRM_SCORE_INFINITY,
	XML_CONFIG_ATTR_SHUTDOWN_LOCK, data_set);
	}
	}
	}

	/*
	* \internal
	* \brief Stage 2 of cluster status: apply node-specific criteria
	*
	* Count known nodes, and apply location constraints, stickiness, and exclusive
	* resource discovery.
	*/
	gboolean
	stage2(pe_working_set_t * data_set)
	{
	GList *gIter = NULL;

	if (pcmk_is_set(data_set->flags, pe_flag_shutdown_lock)) {
	g_list_foreach(data_set->resources, (GFunc) apply_shutdown_lock, data_set);
	}

	if (!pcmk_is_set(data_set->flags, pe_flag_no_compat)) {
	// @COMPAT API backward compatibility
	for (gIter = data_set->nodes; gIter != NULL; gIter = gIter->next) {
	pe_node_t node = (pe_node_t ) gIter->data;

	if (node && (node->weight >= 0) && node->details->online
	&& (node->details->type != node_ping)) {
	data_set->max_valid_nodes++;
	}
	}
	}

	pcmk__apply_locations(data_set);

	gIter = data_set->nodes;
	for (; gIter != NULL; gIter = gIter->next) {
	GList *gIter2 = NULL;
	pe_node_t node = (pe_node_t ) gIter->data;

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

	common_apply_stickiness(rsc, node, data_set);
	rsc_discover_filter(rsc, node);
	}
	}

	return TRUE;
	}

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

	static void *
	convert_const_pointer(const void *ptr)
	{
	/* Worst function ever */
	return (void *)ptr;
	}

	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 = "existence";

	GList nodes = (GList ) data;
	const pe_resource_t *resource1 = a;
	const pe_resource_t *resource2 = b;

	pe_node_t *r1_node = NULL;
	pe_node_t *r2_node = NULL;
	GList *gIter = NULL;
	GHashTable *r1_nodes = NULL;
	GHashTable *r2_nodes = NULL;

	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 = pcmk__native_merge_weights(convert_const_pointer(resource1),
	resource1->id, NULL, NULL, 1,
	pe_weights_forward \| pe_weights_init);
	pe__show_node_weights(true, NULL, resource1->id, r1_nodes,
	resource1->cluster);

	r2_nodes = pcmk__native_merge_weights(convert_const_pointer(resource2),
	resource2->id, NULL, NULL, 1,
	pe_weights_forward \| pe_weights_init);
	pe__show_node_weights(true, NULL, resource2->id, r2_nodes,
	resource2->cluster);

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

	if (resource1->running_on) {
	r1_node = pe__current_node(resource1);
	r1_node = g_hash_table_lookup(r1_nodes, r1_node->details->id);
	if (r1_node != NULL) {
	r1_weight = r1_node->weight;
	}
	}
	if (resource2->running_on) {
	r2_node = pe__current_node(resource2);
	r2_node = g_hash_table_lookup(r2_nodes, r2_node->details->id);
	if (r2_node != NULL) {
	r2_weight = r2_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) {
	pe_node_t node = (pe_node_t ) gIter->data;

	r1_node = NULL;
	r2_node = NULL;

	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:
	crm_trace("%s (%d) on %s %c %s (%d) on %s: %s",
	resource1->id, r1_weight, r1_node ? r1_node->details->id : "n/a",
	rc < 0 ? '>' : rc > 0 ? '<' : '=',
	resource2->id, r2_weight, r2_node ? r2_node->details->id : "n/a", reason);

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

	return rc;
	}

	static void
	allocate_resources(pe_working_set_t * data_set)
	{
	GList *gIter = NULL;

	if (pcmk_is_set(data_set->flags, pe_flag_have_remote_nodes)) {
	/* Allocate remote connection resources first (which will also allocate
	* any colocation dependencies). If the connection is migrating, always
	* prefer the partial migration target.
	*/
	for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	pe_resource_t rsc = (pe_resource_t ) gIter->data;
	if (rsc->is_remote_node == FALSE) {
	continue;
	}
	pe_rsc_trace(rsc, "Allocating remote connection resource '%s'",
	rsc->id);
	rsc->cmds->allocate(rsc, rsc->partial_migration_target, data_set);
	}
	}

	/* now do the rest of the resources */
	for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	pe_resource_t rsc = (pe_resource_t ) gIter->data;
	if (rsc->is_remote_node == TRUE) {
	continue;
	}
	pe_rsc_trace(rsc, "Allocating %s resource '%s'",
	crm_element_name(rsc->xml), rsc->id);
	rsc->cmds->allocate(rsc, NULL, data_set);
	}
	}

	// Clear fail counts for orphaned rsc on all online nodes
	static void
	cleanup_orphans(pe_resource_t * rsc, pe_working_set_t * data_set)
	{
	GList *gIter = NULL;

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

	if (node->details->online
	&& pe_get_failcount(node, rsc, NULL, pe_fc_effective, NULL,
	data_set)) {

	pe_action_t *clear_op = NULL;

	clear_op = pe__clear_failcount(rsc, node, "it is orphaned",
	data_set);

	/* We can't use order_action_then_stop() here because its
	* pe_order_preserve breaks things
	*/
	pcmk__new_ordering(clear_op->rsc, NULL, clear_op,
	rsc, stop_key(rsc), NULL,
	pe_order_optional, data_set);
	}
	}
	}

	gboolean
	stage5(pe_working_set_t * data_set)
	{
	pcmk__output_t *out = data_set->priv;
	GList *gIter = NULL;

	if (!pcmk__str_eq(data_set->placement_strategy, "default", pcmk__str_casei)) {
	GList *nodes = g_list_copy(data_set->nodes);

	nodes = pcmk__sort_nodes(nodes, NULL, data_set);
	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) {
	pe_node_t node = (pe_node_t ) gIter->data;

	if (pcmk_is_set(data_set->flags, pe_flag_show_utilization)) {
	out->message(out, "node-capacity", node, "Original");
	}
	}

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

	allocate_resources(data_set);

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

	if (pcmk_is_set(data_set->flags, pe_flag_show_utilization)) {
	out->message(out, "node-capacity", node, "Remaining");
	}
	}

	// Process deferred action checks
	pe__foreach_param_check(data_set, check_params);
	pe__free_param_checks(data_set);

	if (pcmk_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("Handle orphans");
	if (pcmk_is_set(data_set->flags, pe_flag_stop_rsc_orphans)) {
	for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	pe_resource_t rsc = (pe_resource_t ) gIter->data;

	/* There's no need to recurse into rsc->children because those
	* should just be unallocated clone instances.
	*/
	if (pcmk_is_set(rsc->flags, pe_rsc_orphan)) {
	cleanup_orphans(rsc, data_set);
	}
	}
	}

	crm_trace("Creating actions");

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

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

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

	static gboolean
	is_managed(const pe_resource_t * rsc)
	{
	GList *gIter = rsc->children;

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

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

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

	return FALSE;
	}

	static gboolean
	any_managed_resources(pe_working_set_t * data_set)
	{

	GList *gIter = data_set->resources;

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

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

	/*
	* Create dependencies for stonith and shutdown operations
	*/
	gboolean
	stage6(pe_working_set_t * data_set)
	{
	pe_action_t *dc_down = NULL;
	pe_action_t *stonith_op = NULL;
	gboolean integrity_lost = FALSE;
	gboolean need_stonith = TRUE;
	GList *gIter;
	GList *stonith_ops = NULL;
	GList *shutdown_ops = NULL;

	/* Remote ordering constraints need to happen prior to calculating fencing
	* because it is one more place we can mark nodes as needing fencing.
	*/
	pcmk__order_remote_connection_actions(data_set);

	crm_trace("Processing fencing and shutdown cases");
	if (any_managed_resources(data_set) == FALSE) {
	crm_notice("Delaying fencing operations until there are resources to manage");
	need_stonith = FALSE;
	}

	/* Check each node for stonith/shutdown */
	for (gIter = data_set->nodes; gIter != NULL; gIter = gIter->next) {
	pe_node_t node = (pe_node_t ) gIter->data;

	/* Guest nodes are "fenced" by recovering their container resource,
	* so handle them separately.
	*/
	if (pe__is_guest_node(node)) {
	if (node->details->remote_requires_reset && need_stonith
	&& pe_can_fence(data_set, node)) {
	pcmk__fence_guest(node, data_set);
	}
	continue;
	}

	stonith_op = NULL;

	if (node->details->unclean
	&& need_stonith && pe_can_fence(data_set, node)) {

	stonith_op = pe_fence_op(node, NULL, FALSE, "node is unclean", FALSE, data_set);
	pe_warn("Scheduling Node %s for STONITH", node->details->uname);

	pcmk__order_vs_fence(stonith_op, data_set);

	if (node->details->is_dc) {
	// Remember if the DC is being fenced
	dc_down = stonith_op;

	} else {

	if (!pcmk_is_set(data_set->flags, pe_flag_concurrent_fencing)
	&& (stonith_ops != NULL)) {
	/* Concurrent fencing is disabled, so order each non-DC
	* fencing in a chain. If there is any DC fencing or
	* shutdown, it will be ordered after the last action in the
	* chain later.
	*/
	order_actions((pe_action_t *) stonith_ops->data,
	stonith_op, pe_order_optional);
	}

	// Remember all non-DC fencing actions in a separate list
	stonith_ops = g_list_prepend(stonith_ops, stonith_op);
	}

	} else if (node->details->online && node->details->shutdown &&
	/* TODO define what a shutdown op means for a remote node.
	* For now we do not send shutdown operations for remote nodes, but
	* if we can come up with a good use for this in the future, we will. */
	pe__is_guest_or_remote_node(node) == FALSE) {

	pe_action_t *down_op = pcmk__new_shutdown_action(node, data_set);

	if (node->details->is_dc) {
	// Remember if the DC is being shut down
	dc_down = down_op;
	} else {
	// Remember non-DC shutdowns for later ordering
	shutdown_ops = g_list_prepend(shutdown_ops, 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 (!pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
	pe_warn("YOUR RESOURCES ARE NOW LIKELY COMPROMISED");
	pe_err("ENABLE STONITH TO KEEP YOUR RESOURCES SAFE");

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

	if (dc_down != NULL) {
	/* Order any non-DC shutdowns before any DC shutdown, to avoid repeated
	* DC elections. However, we don't want to order non-DC shutdowns before
	* a DC fencing, because even though we don't want a node that's
	* shutting down to become DC, the DC fencing could be ordered before a
	* clone stop that's also ordered before the shutdowns, thus leading to
	* a graph loop.
	*/
	if (pcmk__str_eq(dc_down->task, CRM_OP_SHUTDOWN, pcmk__str_casei)) {
	for (gIter = shutdown_ops; gIter != NULL; gIter = gIter->next) {
	pe_action_t node_stop = (pe_action_t ) gIter->data;

	crm_debug("Ordering shutdown on %s before %s on DC %s",
	node_stop->node->details->uname,
	dc_down->task, dc_down->node->details->uname);

	order_actions(node_stop, dc_down, pe_order_optional);
	}
	}

	// Order any non-DC fencing before any DC fencing or shutdown

	if (pcmk_is_set(data_set->flags, pe_flag_concurrent_fencing)) {
	/* With concurrent fencing, order each non-DC fencing action
	* separately before any DC fencing or shutdown.
	*/
	for (gIter = stonith_ops; gIter != NULL; gIter = gIter->next) {
	order_actions((pe_action_t *) gIter->data, dc_down,
	pe_order_optional);
	}
	} else if (stonith_ops) {
	/* Without concurrent fencing, the non-DC fencing actions are
	* already ordered relative to each other, so we just need to order
	* the DC fencing after the last action in the chain (which is the
	* first item in the list).
	*/
	order_actions((pe_action_t *) stonith_ops->data, dc_down,
	pe_order_optional);
	}
	}
	g_list_free(stonith_ops);
	g_list_free(shutdown_ops);
	return TRUE;
	}
	-
	-static gboolean
	-order_first_probe_unneeded(pe_action_t * probe, pe_action_t * rh_action)
	-{
	- /* No need to probe the resource on the node that is being
	- * unfenced. Otherwise it might introduce transition loop
	- * since probe will be performed after the node is
	- * unfenced.
	- */
	- if (pcmk__str_eq(rh_action->task, CRM_OP_FENCE, pcmk__str_casei)
	- && probe->node && rh_action->node
	- && probe->node->details == rh_action->node->details) {
	- const char *op = g_hash_table_lookup(rh_action->meta, "stonith_action");
	-
	- if (pcmk__str_eq(op, "on", pcmk__str_casei)) {
	- return TRUE;
	- }
	- }
	-
	- // Shutdown waits for probe to complete only if it's on the same node
	- if ((pcmk__str_eq(rh_action->task, CRM_OP_SHUTDOWN, pcmk__str_casei))
	- && probe->node && rh_action->node
	- && probe->node->details != rh_action->node->details) {
	- return TRUE;
	- }
	- return FALSE;
	-}
	-
	-static void
	-order_first_probes_imply_stops(pe_working_set_t * data_set)
	-{
	- GList *gIter = NULL;
	-
	- for (gIter = data_set->ordering_constraints; gIter != NULL; gIter = gIter->next) {
	- pe__ordering_t *order = gIter->data;
	- enum pe_ordering order_type = pe_order_optional;
	-
	- pe_resource_t *lh_rsc = order->lh_rsc;
	- pe_resource_t *rh_rsc = order->rh_rsc;
	- pe_action_t *lh_action = order->lh_action;
	- pe_action_t *rh_action = order->rh_action;
	- const char *lh_action_task = order->lh_action_task;
	- const char *rh_action_task = order->rh_action_task;
	-
	- GList *probes = NULL;
	- GList *rh_actions = NULL;
	-
	- GList *pIter = NULL;
	-
	- if (lh_rsc == NULL) {
	- continue;
	-
	- } else if (rh_rsc && lh_rsc == rh_rsc) {
	- continue;
	- }
	-
	- if (lh_action == NULL && lh_action_task == NULL) {
	- continue;
	- }
	-
	- if (rh_action == NULL && rh_action_task == NULL) {
	- continue;
	- }
	-
	- /* Technically probe is expected to return "not running", which could be
	- * the alternative of stop action if the status of the resource is
	- * unknown yet.
	- */
	- if (lh_action && !pcmk__str_eq(lh_action->task, RSC_STOP, pcmk__str_casei)) {
	- continue;
	-
	- } else if (lh_action == NULL
	- && lh_action_task
	- && !pcmk__ends_with(lh_action_task, "_" RSC_STOP "_0")) {
	- continue;
	- }
	-
	- /* Do not probe the resource inside of a stopping container. Otherwise
	- * it might introduce transition loop since probe will be performed
	- * after the container starts again.
	- */
	- if (rh_rsc && lh_rsc->container == rh_rsc) {
	- if (rh_action && pcmk__str_eq(rh_action->task, RSC_STOP, pcmk__str_casei)) {
	- continue;
	-
	- } else if (rh_action == NULL && rh_action_task
	- && pcmk__ends_with(rh_action_task,"_" RSC_STOP "_0")) {
	- continue;
	- }
	- }
	-
	- if (order->type == pe_order_none) {
	- continue;
	- }
	-
	- // Preserve the order options for future filtering
	- if (pcmk_is_set(order->type, pe_order_apply_first_non_migratable)) {
	- pe__set_order_flags(order_type,
	- pe_order_apply_first_non_migratable);
	- }
	-
	- if (pcmk_is_set(order->type, pe_order_same_node)) {
	- pe__set_order_flags(order_type, pe_order_same_node);
	- }
	-
	- // Keep the order types for future filtering
	- if (order->type == pe_order_anti_colocation
	- \|\| order->type == pe_order_load) {
	- order_type = order->type;
	- }
	-
	- probes = pe__resource_actions(lh_rsc, NULL, RSC_STATUS, FALSE);
	- if (probes == NULL) {
	- continue;
	- }
	-
	- if (rh_action) {
	- rh_actions = g_list_prepend(rh_actions, rh_action);
	-
	- } else if (rh_rsc && rh_action_task) {
	- rh_actions = find_actions(rh_rsc->actions, rh_action_task, NULL);
	- }
	-
	- if (rh_actions == NULL) {
	- g_list_free(probes);
	- continue;
	- }
	-
	- crm_trace("Processing for LH probe based on ordering constraint %s -> %s"
	- " (id=%d, type=%.6x)",
	- lh_action ? lh_action->uuid : lh_action_task,
	- rh_action ? rh_action->uuid : rh_action_task,
	- order->id, order->type);
	-
	- for (pIter = probes; pIter != NULL; pIter = pIter->next) {
	- pe_action_t probe = (pe_action_t ) pIter->data;
	- GList *rIter = NULL;
	-
	- for (rIter = rh_actions; rIter != NULL; rIter = rIter->next) {
	- pe_action_t rh_action_iter = (pe_action_t ) rIter->data;
	-
	- if (order_first_probe_unneeded(probe, rh_action_iter)) {
	- continue;
	- }
	- order_actions(probe, rh_action_iter, order_type);
	- }
	- }
	-
	- g_list_free(rh_actions);
	- g_list_free(probes);
	- }
	-}
	-
	-static void
	-order_first_probe_then_restart_repromote(pe_action_t * probe,
	- pe_action_t * after,
	- pe_working_set_t * data_set)
	-{
	- GList *gIter = NULL;
	- bool interleave = FALSE;
	- pe_resource_t *compatible_rsc = NULL;
	-
	- if (probe == NULL
	- \|\| probe->rsc == NULL
	- \|\| probe->rsc->variant != pe_native) {
	- return;
	- }
	-
	- if (after == NULL
	- // Avoid running into any possible loop
	- \|\| pcmk_is_set(after->flags, pe_action_tracking)) {
	- return;
	- }
	-
	- if (!pcmk__str_eq(probe->task, RSC_STATUS, pcmk__str_casei)) {
	- return;
	- }
	-
	- pe__set_action_flags(after, pe_action_tracking);
	-
	- crm_trace("Processing based on %s %s -> %s %s",
	- probe->uuid,
	- probe->node ? probe->node->details->uname: "",
	- after->uuid,
	- after->node ? after->node->details->uname : "");
	-
	- if (after->rsc
	- /* Better not build a dependency directly with a clone/group.
	- * We are going to proceed through the ordering chain and build
	- * dependencies with its children.
	- */
	- && after->rsc->variant == pe_native
	- && probe->rsc != after->rsc) {
	-
	- GList *then_actions = NULL;
	- enum pe_ordering probe_order_type = pe_order_optional;
	-
	- if (pcmk__str_eq(after->task, RSC_START, pcmk__str_casei)) {
	- then_actions = pe__resource_actions(after->rsc, NULL, RSC_STOP, FALSE);
	-
	- } else if (pcmk__str_eq(after->task, RSC_PROMOTE, pcmk__str_casei)) {
	- then_actions = pe__resource_actions(after->rsc, NULL, RSC_DEMOTE, FALSE);
	- }
	-
	- for (gIter = then_actions; gIter != NULL; gIter = gIter->next) {
	- pe_action_t then = (pe_action_t ) gIter->data;
	-
	- // Skip any pseudo action which for example is implied by fencing
	- if (pcmk_is_set(then->flags, pe_action_pseudo)) {
	- continue;
	- }
	-
	- order_actions(probe, then, probe_order_type);
	- }
	- g_list_free(then_actions);
	- }
	-
	- if (after->rsc
	- && after->rsc->variant > pe_group) {
	- const char *interleave_s = g_hash_table_lookup(after->rsc->meta,
	- XML_RSC_ATTR_INTERLEAVE);
	-
	- interleave = crm_is_true(interleave_s);
	-
	- if (interleave) {
	- /* For an interleaved clone, we should build a dependency only
	- * with the relevant clone child.
	- */
	- compatible_rsc = find_compatible_child(probe->rsc,
	- after->rsc,
	- RSC_ROLE_UNKNOWN,
	- FALSE, data_set);
	- }
	- }
	-
	- for (gIter = after->actions_after; gIter != NULL; gIter = gIter->next) {
	- pe_action_wrapper_t after_wrapper = (pe_action_wrapper_t ) gIter->data;
	- /* pe_order_implies_then is the reason why a required A.start
	- * implies/enforces B.start to be required too, which is the cause of
	- * B.restart/re-promote.
	- *
	- * Not sure about pe_order_implies_then_on_node though. It's now only
	- * used for unfencing case, which tends to introduce transition
	- * loops...
	- */
	-
	- if (!pcmk_is_set(after_wrapper->type, pe_order_implies_then)) {
	- /* The order type between a group/clone and its child such as
	- * B.start-> B_child.start is:
	- * pe_order_implies_first_printed \| pe_order_runnable_left
	- *
	- * Proceed through the ordering chain and build dependencies with
	- * its children.
	- */
	- if (after->rsc == NULL
	- \|\| after->rsc->variant < pe_group
	- \|\| probe->rsc->parent == after->rsc
	- \|\| after_wrapper->action->rsc == NULL
	- \|\| after_wrapper->action->rsc->variant > pe_group
	- \|\| after->rsc != after_wrapper->action->rsc->parent) {
	- continue;
	- }
	-
	- /* Proceed to the children of a group or a non-interleaved clone.
	- * For an interleaved clone, proceed only to the relevant child.
	- */
	- if (after->rsc->variant > pe_group
	- && interleave == TRUE
	- && (compatible_rsc == NULL
	- \|\| compatible_rsc != after_wrapper->action->rsc)) {
	- continue;
	- }
	- }
	-
	- crm_trace("Proceeding through %s %s -> %s %s (type=%#.6x)",
	- after->uuid,
	- after->node ? after->node->details->uname: "",
	- after_wrapper->action->uuid,
	- after_wrapper->action->node ? after_wrapper->action->node->details->uname : "",
	- after_wrapper->type);
	-
	- order_first_probe_then_restart_repromote(probe, after_wrapper->action, data_set);
	- }
	-}
	-
	-static void clear_actions_tracking_flag(pe_working_set_t * data_set)
	-{
	- GList *gIter = NULL;
	-
	- for (gIter = data_set->actions; gIter != NULL; gIter = gIter->next) {
	- pe_action_t action = (pe_action_t ) gIter->data;
	-
	- if (pcmk_is_set(action->flags, pe_action_tracking)) {
	- pe__clear_action_flags(action, pe_action_tracking);
	- }
	- }
	-}
	-
	-static void
	-order_first_rsc_probes(pe_resource_t * rsc, pe_working_set_t * data_set)
	-{
	- GList *gIter = NULL;
	- GList *probes = NULL;
	-
	- g_list_foreach(rsc->children, (GFunc) order_first_rsc_probes, data_set);
	-
	- if (rsc->variant != pe_native) {
	- return;
	- }
	-
	- probes = pe__resource_actions(rsc, NULL, RSC_STATUS, FALSE);
	-
	- for (gIter = probes; gIter != NULL; gIter= gIter->next) {
	- pe_action_t probe = (pe_action_t ) gIter->data;
	- GList *aIter = NULL;
	-
	- for (aIter = probe->actions_after; aIter != NULL; aIter = aIter->next) {
	- pe_action_wrapper_t after_wrapper = (pe_action_wrapper_t ) aIter->data;
	-
	- order_first_probe_then_restart_repromote(probe, after_wrapper->action, data_set);
	- clear_actions_tracking_flag(data_set);
	- }
	- }
	-
	- g_list_free(probes);
	-}
	-
	-static void
	-order_first_probes(pe_working_set_t * data_set)
	-{
	- GList *gIter = NULL;
	-
	- for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	- pe_resource_t rsc = (pe_resource_t ) gIter->data;
	-
	- order_first_rsc_probes(rsc, data_set);
	- }
	-
	- order_first_probes_imply_stops(data_set);
	-}
	-
	-static void
	-order_then_probes(pe_working_set_t * data_set)
	-{
	-#if 0
	- GList *gIter = NULL;
	-
	- for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	- pe_resource_t rsc = (pe_resource_t ) gIter->data;
	-
	- /* Given "A then B", we would prefer to wait for A to be
	- * started before probing B.
	- *
	- * If A was a filesystem on which the binaries and data for B
	- * lived, it would have been useful if the author of B's agent
	- * could assume that A is running before B.monitor will be
	- * called.
	- *
	- * However we can't _only_ probe once A is running, otherwise
	- * we'd not detect the state of B if A could not be started
	- * for some reason.
	- *
	- * In practice however, we cannot even do an opportunistic
	- * version of this because B may be moving:
	- *
	- * B.probe -> B.start
	- * B.probe -> B.stop
	- * B.stop -> B.start
	- * A.stop -> A.start
	- * A.start -> B.probe
	- *
	- * So far so good, but if we add the result of this code:
	- *
	- * B.stop -> A.stop
	- *
	- * Then we get a loop:
	- *
	- * B.probe -> B.stop -> A.stop -> A.start -> B.probe
	- *
	- * We could kill the 'B.probe -> B.stop' dependency, but that
	- * could mean stopping B "too" soon, because B.start must wait
	- * for the probes to complete.
	- *
	- * Another option is to allow it only if A is a non-unique
	- * clone with clone-max == node-max (since we'll never be
	- * moving it). However, we could still be stopping one
	- * instance at the same time as starting another.
	-
	- * The complexity of checking for allowed conditions combined
	- * with the ever narrowing usecase suggests that this code
	- * should remain disabled until someone gets smarter.
	- */
	- pe_action_t *start = NULL;
	- GList *actions = NULL;
	- GList *probes = NULL;
	-
	- actions = pe__resource_actions(rsc, NULL, RSC_START, FALSE);
	-
	- if (actions) {
	- start = actions->data;
	- g_list_free(actions);
	- }
	-
	- if(start == NULL) {
	- crm_err("No start action for %s", rsc->id);
	- continue;
	- }
	-
	- probes = pe__resource_actions(rsc, NULL, RSC_STATUS, FALSE);
	-
	- for (actions = start->actions_before; actions != NULL; actions = actions->next) {
	- pe_action_wrapper_t before = (pe_action_wrapper_t ) actions->data;
	-
	- GList *pIter = NULL;
	- pe_action_t *first = before->action;
	- pe_resource_t *first_rsc = first->rsc;
	-
	- if(first->required_runnable_before) {
	- GList *clone_actions = NULL;
	- for (clone_actions = first->actions_before; clone_actions != NULL; clone_actions = clone_actions->next) {
	- before = (pe_action_wrapper_t *) clone_actions->data;
	-
	- crm_trace("Testing %s -> %s (%p) for %s", first->uuid, before->action->uuid, before->action->rsc, start->uuid);
	-
	- CRM_ASSERT(before->action->rsc);
	- first_rsc = before->action->rsc;
	- break;
	- }
	-
	- } else if(!pcmk__str_eq(first->task, RSC_START, pcmk__str_casei)) {
	- crm_trace("Not a start op %s for %s", first->uuid, start->uuid);
	- }
	-
	- if(first_rsc == NULL) {
	- continue;
	-
	- } else if(uber_parent(first_rsc) == uber_parent(start->rsc)) {
	- crm_trace("Same parent %s for %s", first_rsc->id, start->uuid);
	- continue;
	-
	- } else if(FALSE && pe_rsc_is_clone(uber_parent(first_rsc)) == FALSE) {
	- crm_trace("Not a clone %s for %s", first_rsc->id, start->uuid);
	- continue;
	- }
	-
	- crm_err("Applying %s before %s %d", first->uuid, start->uuid, uber_parent(first_rsc)->variant);
	-
	- for (pIter = probes; pIter != NULL; pIter = pIter->next) {
	- pe_action_t probe = (pe_action_t ) pIter->data;
	-
	- crm_err("Ordering %s before %s", first->uuid, probe->uuid);
	- order_actions(first, probe, pe_order_optional);
	- }
	- }
	- }
	-#endif
	-}
	-
	-void
	-pcmk__order_probes(pe_working_set_t *data_set)
	-{
	- order_first_probes(data_set);
	- order_then_probes(data_set);
	-}
	diff --git a/lib/pacemaker/pcmk_sched_probes.c b/lib/pacemaker/pcmk_sched_probes.c
	new file mode 100644
	index 0000000000..83f82e94b8
	--- /dev/null
	+++ b/lib/pacemaker/pcmk_sched_probes.c
	@@ -0,0 +1,481 @@
	+/*
	+ * Copyright 2004-2021 the Pacemaker project contributors
	+ *
	+ * The version control history for this file may have further details.
	+ *
	+ * This source code is licensed under the GNU General Public License version 2
	+ * or later (GPLv2+) WITHOUT ANY WARRANTY.
	+ */
	+
	+#include <crm_internal.h>
	+
	+#include <glib.h>
	+
	+#include <crm/crm.h>
	+#include <crm/pengine/status.h>
	+#include <pacemaker-internal.h>
	+#include "libpacemaker_private.h"
	+
	+static gboolean
	+order_first_probe_unneeded(pe_action_t * probe, pe_action_t * rh_action)
	+{
	+ /* No need to probe the resource on the node that is being
	+ * unfenced. Otherwise it might introduce transition loop
	+ * since probe will be performed after the node is
	+ * unfenced.
	+ */
	+ if (pcmk__str_eq(rh_action->task, CRM_OP_FENCE, pcmk__str_casei)
	+ && probe->node && rh_action->node
	+ && probe->node->details == rh_action->node->details) {
	+ const char *op = g_hash_table_lookup(rh_action->meta, "stonith_action");
	+
	+ if (pcmk__str_eq(op, "on", pcmk__str_casei)) {
	+ return TRUE;
	+ }
	+ }
	+
	+ // Shutdown waits for probe to complete only if it's on the same node
	+ if ((pcmk__str_eq(rh_action->task, CRM_OP_SHUTDOWN, pcmk__str_casei))
	+ && probe->node && rh_action->node
	+ && probe->node->details != rh_action->node->details) {
	+ return TRUE;
	+ }
	+ return FALSE;
	+}
	+
	+static void
	+order_first_probes_imply_stops(pe_working_set_t * data_set)
	+{
	+ GList *gIter = NULL;
	+
	+ for (gIter = data_set->ordering_constraints; gIter != NULL; gIter = gIter->next) {
	+ pe__ordering_t *order = gIter->data;
	+ enum pe_ordering order_type = pe_order_optional;
	+
	+ pe_resource_t *lh_rsc = order->lh_rsc;
	+ pe_resource_t *rh_rsc = order->rh_rsc;
	+ pe_action_t *lh_action = order->lh_action;
	+ pe_action_t *rh_action = order->rh_action;
	+ const char *lh_action_task = order->lh_action_task;
	+ const char *rh_action_task = order->rh_action_task;
	+
	+ GList *probes = NULL;
	+ GList *rh_actions = NULL;
	+
	+ GList *pIter = NULL;
	+
	+ if (lh_rsc == NULL) {
	+ continue;
	+
	+ } else if (rh_rsc && lh_rsc == rh_rsc) {
	+ continue;
	+ }
	+
	+ if (lh_action == NULL && lh_action_task == NULL) {
	+ continue;
	+ }
	+
	+ if (rh_action == NULL && rh_action_task == NULL) {
	+ continue;
	+ }
	+
	+ /* Technically probe is expected to return "not running", which could be
	+ * the alternative of stop action if the status of the resource is
	+ * unknown yet.
	+ */
	+ if (lh_action && !pcmk__str_eq(lh_action->task, RSC_STOP, pcmk__str_casei)) {
	+ continue;
	+
	+ } else if (lh_action == NULL
	+ && lh_action_task
	+ && !pcmk__ends_with(lh_action_task, "_" RSC_STOP "_0")) {
	+ continue;
	+ }
	+
	+ /* Do not probe the resource inside of a stopping container. Otherwise
	+ * it might introduce transition loop since probe will be performed
	+ * after the container starts again.
	+ */
	+ if (rh_rsc && lh_rsc->container == rh_rsc) {
	+ if (rh_action && pcmk__str_eq(rh_action->task, RSC_STOP, pcmk__str_casei)) {
	+ continue;
	+
	+ } else if (rh_action == NULL && rh_action_task
	+ && pcmk__ends_with(rh_action_task,"_" RSC_STOP "_0")) {
	+ continue;
	+ }
	+ }
	+
	+ if (order->type == pe_order_none) {
	+ continue;
	+ }
	+
	+ // Preserve the order options for future filtering
	+ if (pcmk_is_set(order->type, pe_order_apply_first_non_migratable)) {
	+ pe__set_order_flags(order_type,
	+ pe_order_apply_first_non_migratable);
	+ }
	+
	+ if (pcmk_is_set(order->type, pe_order_same_node)) {
	+ pe__set_order_flags(order_type, pe_order_same_node);
	+ }
	+
	+ // Keep the order types for future filtering
	+ if (order->type == pe_order_anti_colocation
	+ \|\| order->type == pe_order_load) {
	+ order_type = order->type;
	+ }
	+
	+ probes = pe__resource_actions(lh_rsc, NULL, RSC_STATUS, FALSE);
	+ if (probes == NULL) {
	+ continue;
	+ }
	+
	+ if (rh_action) {
	+ rh_actions = g_list_prepend(rh_actions, rh_action);
	+
	+ } else if (rh_rsc && rh_action_task) {
	+ rh_actions = find_actions(rh_rsc->actions, rh_action_task, NULL);
	+ }
	+
	+ if (rh_actions == NULL) {
	+ g_list_free(probes);
	+ continue;
	+ }
	+
	+ crm_trace("Processing for LH probe based on ordering constraint %s -> %s"
	+ " (id=%d, type=%.6x)",
	+ lh_action ? lh_action->uuid : lh_action_task,
	+ rh_action ? rh_action->uuid : rh_action_task,
	+ order->id, order->type);
	+
	+ for (pIter = probes; pIter != NULL; pIter = pIter->next) {
	+ pe_action_t probe = (pe_action_t ) pIter->data;
	+ GList *rIter = NULL;
	+
	+ for (rIter = rh_actions; rIter != NULL; rIter = rIter->next) {
	+ pe_action_t rh_action_iter = (pe_action_t ) rIter->data;
	+
	+ if (order_first_probe_unneeded(probe, rh_action_iter)) {
	+ continue;
	+ }
	+ order_actions(probe, rh_action_iter, order_type);
	+ }
	+ }
	+
	+ g_list_free(rh_actions);
	+ g_list_free(probes);
	+ }
	+}
	+
	+static void
	+order_first_probe_then_restart_repromote(pe_action_t * probe,
	+ pe_action_t * after,
	+ pe_working_set_t * data_set)
	+{
	+ GList *gIter = NULL;
	+ bool interleave = FALSE;
	+ pe_resource_t *compatible_rsc = NULL;
	+
	+ if (probe == NULL
	+ \|\| probe->rsc == NULL
	+ \|\| probe->rsc->variant != pe_native) {
	+ return;
	+ }
	+
	+ if (after == NULL
	+ // Avoid running into any possible loop
	+ \|\| pcmk_is_set(after->flags, pe_action_tracking)) {
	+ return;
	+ }
	+
	+ if (!pcmk__str_eq(probe->task, RSC_STATUS, pcmk__str_casei)) {
	+ return;
	+ }
	+
	+ pe__set_action_flags(after, pe_action_tracking);
	+
	+ crm_trace("Processing based on %s %s -> %s %s",
	+ probe->uuid,
	+ probe->node ? probe->node->details->uname: "",
	+ after->uuid,
	+ after->node ? after->node->details->uname : "");
	+
	+ if (after->rsc
	+ /* Better not build a dependency directly with a clone/group.
	+ * We are going to proceed through the ordering chain and build
	+ * dependencies with its children.
	+ */
	+ && after->rsc->variant == pe_native
	+ && probe->rsc != after->rsc) {
	+
	+ GList *then_actions = NULL;
	+ enum pe_ordering probe_order_type = pe_order_optional;
	+
	+ if (pcmk__str_eq(after->task, RSC_START, pcmk__str_casei)) {
	+ then_actions = pe__resource_actions(after->rsc, NULL, RSC_STOP, FALSE);
	+
	+ } else if (pcmk__str_eq(after->task, RSC_PROMOTE, pcmk__str_casei)) {
	+ then_actions = pe__resource_actions(after->rsc, NULL, RSC_DEMOTE, FALSE);
	+ }
	+
	+ for (gIter = then_actions; gIter != NULL; gIter = gIter->next) {
	+ pe_action_t then = (pe_action_t ) gIter->data;
	+
	+ // Skip any pseudo action which for example is implied by fencing
	+ if (pcmk_is_set(then->flags, pe_action_pseudo)) {
	+ continue;
	+ }
	+
	+ order_actions(probe, then, probe_order_type);
	+ }
	+ g_list_free(then_actions);
	+ }
	+
	+ if (after->rsc
	+ && after->rsc->variant > pe_group) {
	+ const char *interleave_s = g_hash_table_lookup(after->rsc->meta,
	+ XML_RSC_ATTR_INTERLEAVE);
	+
	+ interleave = crm_is_true(interleave_s);
	+
	+ if (interleave) {
	+ /* For an interleaved clone, we should build a dependency only
	+ * with the relevant clone child.
	+ */
	+ compatible_rsc = find_compatible_child(probe->rsc,
	+ after->rsc,
	+ RSC_ROLE_UNKNOWN,
	+ FALSE, data_set);
	+ }
	+ }
	+
	+ for (gIter = after->actions_after; gIter != NULL; gIter = gIter->next) {
	+ pe_action_wrapper_t after_wrapper = (pe_action_wrapper_t ) gIter->data;
	+ /* pe_order_implies_then is the reason why a required A.start
	+ * implies/enforces B.start to be required too, which is the cause of
	+ * B.restart/re-promote.
	+ *
	+ * Not sure about pe_order_implies_then_on_node though. It's now only
	+ * used for unfencing case, which tends to introduce transition
	+ * loops...
	+ */
	+
	+ if (!pcmk_is_set(after_wrapper->type, pe_order_implies_then)) {
	+ /* The order type between a group/clone and its child such as
	+ * B.start-> B_child.start is:
	+ * pe_order_implies_first_printed \| pe_order_runnable_left
	+ *
	+ * Proceed through the ordering chain and build dependencies with
	+ * its children.
	+ */
	+ if (after->rsc == NULL
	+ \|\| after->rsc->variant < pe_group
	+ \|\| probe->rsc->parent == after->rsc
	+ \|\| after_wrapper->action->rsc == NULL
	+ \|\| after_wrapper->action->rsc->variant > pe_group
	+ \|\| after->rsc != after_wrapper->action->rsc->parent) {
	+ continue;
	+ }
	+
	+ /* Proceed to the children of a group or a non-interleaved clone.
	+ * For an interleaved clone, proceed only to the relevant child.
	+ */
	+ if (after->rsc->variant > pe_group
	+ && interleave == TRUE
	+ && (compatible_rsc == NULL
	+ \|\| compatible_rsc != after_wrapper->action->rsc)) {
	+ continue;
	+ }
	+ }
	+
	+ crm_trace("Proceeding through %s %s -> %s %s (type=%#.6x)",
	+ after->uuid,
	+ after->node ? after->node->details->uname: "",
	+ after_wrapper->action->uuid,
	+ after_wrapper->action->node ? after_wrapper->action->node->details->uname : "",
	+ after_wrapper->type);
	+
	+ order_first_probe_then_restart_repromote(probe, after_wrapper->action, data_set);
	+ }
	+}
	+
	+static void clear_actions_tracking_flag(pe_working_set_t * data_set)
	+{
	+ GList *gIter = NULL;
	+
	+ for (gIter = data_set->actions; gIter != NULL; gIter = gIter->next) {
	+ pe_action_t action = (pe_action_t ) gIter->data;
	+
	+ if (pcmk_is_set(action->flags, pe_action_tracking)) {
	+ pe__clear_action_flags(action, pe_action_tracking);
	+ }
	+ }
	+}
	+
	+static void
	+order_first_rsc_probes(pe_resource_t * rsc, pe_working_set_t * data_set)
	+{
	+ GList *gIter = NULL;
	+ GList *probes = NULL;
	+
	+ g_list_foreach(rsc->children, (GFunc) order_first_rsc_probes, data_set);
	+
	+ if (rsc->variant != pe_native) {
	+ return;
	+ }
	+
	+ probes = pe__resource_actions(rsc, NULL, RSC_STATUS, FALSE);
	+
	+ for (gIter = probes; gIter != NULL; gIter= gIter->next) {
	+ pe_action_t probe = (pe_action_t ) gIter->data;
	+ GList *aIter = NULL;
	+
	+ for (aIter = probe->actions_after; aIter != NULL; aIter = aIter->next) {
	+ pe_action_wrapper_t after_wrapper = (pe_action_wrapper_t ) aIter->data;
	+
	+ order_first_probe_then_restart_repromote(probe, after_wrapper->action, data_set);
	+ clear_actions_tracking_flag(data_set);
	+ }
	+ }
	+
	+ g_list_free(probes);
	+}
	+
	+static void
	+order_first_probes(pe_working_set_t * data_set)
	+{
	+ GList *gIter = NULL;
	+
	+ for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	+ pe_resource_t rsc = (pe_resource_t ) gIter->data;
	+
	+ order_first_rsc_probes(rsc, data_set);
	+ }
	+
	+ order_first_probes_imply_stops(data_set);
	+}
	+
	+static void
	+order_then_probes(pe_working_set_t * data_set)
	+{
	+#if 0
	+ GList *gIter = NULL;
	+
	+ for (gIter = data_set->resources; gIter != NULL; gIter = gIter->next) {
	+ pe_resource_t rsc = (pe_resource_t ) gIter->data;
	+
	+ /* Given "A then B", we would prefer to wait for A to be
	+ * started before probing B.
	+ *
	+ * If A was a filesystem on which the binaries and data for B
	+ * lived, it would have been useful if the author of B's agent
	+ * could assume that A is running before B.monitor will be
	+ * called.
	+ *
	+ * However we can't _only_ probe once A is running, otherwise
	+ * we'd not detect the state of B if A could not be started
	+ * for some reason.
	+ *
	+ * In practice however, we cannot even do an opportunistic
	+ * version of this because B may be moving:
	+ *
	+ * B.probe -> B.start
	+ * B.probe -> B.stop
	+ * B.stop -> B.start
	+ * A.stop -> A.start
	+ * A.start -> B.probe
	+ *
	+ * So far so good, but if we add the result of this code:
	+ *
	+ * B.stop -> A.stop
	+ *
	+ * Then we get a loop:
	+ *
	+ * B.probe -> B.stop -> A.stop -> A.start -> B.probe
	+ *
	+ * We could kill the 'B.probe -> B.stop' dependency, but that
	+ * could mean stopping B "too" soon, because B.start must wait
	+ * for the probes to complete.
	+ *
	+ * Another option is to allow it only if A is a non-unique
	+ * clone with clone-max == node-max (since we'll never be
	+ * moving it). However, we could still be stopping one
	+ * instance at the same time as starting another.
	+
	+ * The complexity of checking for allowed conditions combined
	+ * with the ever narrowing usecase suggests that this code
	+ * should remain disabled until someone gets smarter.
	+ */
	+ pe_action_t *start = NULL;
	+ GList *actions = NULL;
	+ GList *probes = NULL;
	+
	+ actions = pe__resource_actions(rsc, NULL, RSC_START, FALSE);
	+
	+ if (actions) {
	+ start = actions->data;
	+ g_list_free(actions);
	+ }
	+
	+ if(start == NULL) {
	+ crm_err("No start action for %s", rsc->id);
	+ continue;
	+ }
	+
	+ probes = pe__resource_actions(rsc, NULL, RSC_STATUS, FALSE);
	+
	+ for (actions = start->actions_before; actions != NULL; actions = actions->next) {
	+ pe_action_wrapper_t before = (pe_action_wrapper_t ) actions->data;
	+
	+ GList *pIter = NULL;
	+ pe_action_t *first = before->action;
	+ pe_resource_t *first_rsc = first->rsc;
	+
	+ if(first->required_runnable_before) {
	+ GList *clone_actions = NULL;
	+ for (clone_actions = first->actions_before; clone_actions != NULL; clone_actions = clone_actions->next) {
	+ before = (pe_action_wrapper_t *) clone_actions->data;
	+
	+ crm_trace("Testing %s -> %s (%p) for %s", first->uuid, before->action->uuid, before->action->rsc, start->uuid);
	+
	+ CRM_ASSERT(before->action->rsc);
	+ first_rsc = before->action->rsc;
	+ break;
	+ }
	+
	+ } else if(!pcmk__str_eq(first->task, RSC_START, pcmk__str_casei)) {
	+ crm_trace("Not a start op %s for %s", first->uuid, start->uuid);
	+ }
	+
	+ if(first_rsc == NULL) {
	+ continue;
	+
	+ } else if(uber_parent(first_rsc) == uber_parent(start->rsc)) {
	+ crm_trace("Same parent %s for %s", first_rsc->id, start->uuid);
	+ continue;
	+
	+ } else if(FALSE && pe_rsc_is_clone(uber_parent(first_rsc)) == FALSE) {
	+ crm_trace("Not a clone %s for %s", first_rsc->id, start->uuid);
	+ continue;
	+ }
	+
	+ crm_err("Applying %s before %s %d", first->uuid, start->uuid, uber_parent(first_rsc)->variant);
	+
	+ for (pIter = probes; pIter != NULL; pIter = pIter->next) {
	+ pe_action_t probe = (pe_action_t ) pIter->data;
	+
	+ crm_err("Ordering %s before %s", first->uuid, probe->uuid);
	+ order_actions(first, probe, pe_order_optional);
	+ }
	+ }
	+ }
	+#endif
	+}
	+
	+void
	+pcmk__order_probes(pe_working_set_t *data_set)
	+{
	+ order_first_probes(data_set);
	+ order_then_probes(data_set);
	+}

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