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	diff --git a/lib/pengine/pe_actions.c b/lib/pengine/pe_actions.c
	index 0c2eb3c161..83f76cccf1 100644
	--- a/lib/pengine/pe_actions.c
	+++ b/lib/pengine/pe_actions.c
	@@ -1,1755 +1,1751 @@
	/*
	* Copyright 2004-2022 the Pacemaker project contributors
	*
	* The version control history for this file may have further details.
	*
	* This source code is licensed under the GNU Lesser General Public License
	* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	*/

	#include <crm_internal.h>

	#include <glib.h>
	#include <stdbool.h>

	#include <crm/crm.h>
	#include <crm/msg_xml.h>
	#include <crm/pengine/internal.h>
	#include "pe_status_private.h"

	static void unpack_operation(pe_action_t action, xmlNode xml_obj,
	pe_resource_t *container,
	pe_working_set_t *data_set, guint interval_ms);

	static void
	add_singleton(pe_working_set_t data_set, pe_action_t action)
	{
	if (data_set->singletons == NULL) {
	data_set->singletons = pcmk__strkey_table(NULL, NULL);
	}
	g_hash_table_insert(data_set->singletons, action->uuid, action);
	}

	static pe_action_t *
	lookup_singleton(pe_working_set_t data_set, const char action_uuid)
	{
	if (data_set->singletons == NULL) {
	return NULL;
	}
	return g_hash_table_lookup(data_set->singletons, action_uuid);
	}

	/*!
	* \internal
	* \brief Find an existing action that matches arguments
	*
	* \param[in] key Action key to match
	* \param[in] rsc Resource to match (if any)
	* \param[in] node Node to match (if any)
	* \param[in] data_set Cluster working set
	*
	* \return Existing action that matches arguments (or NULL if none)
	*/
	static pe_action_t *
	find_existing_action(const char key, pe_resource_t rsc, pe_node_t *node,
	pe_working_set_t *data_set)
	{
	GList *matches = NULL;
	pe_action_t *action = NULL;

	/* When rsc is NULL, it would be quicker to check data_set->singletons,
	* but checking all data_set->actions takes the node into account.
	*/
	matches = find_actions(((rsc == NULL)? data_set->actions : rsc->actions),
	key, node);
	if (matches == NULL) {
	return NULL;
	}
	CRM_LOG_ASSERT(!pcmk__list_of_multiple(matches));

	action = matches->data;
	g_list_free(matches);
	return action;
	}

	static xmlNode *
	find_rsc_op_entry_helper(pe_resource_t * rsc, const char *key, gboolean include_disabled)
	{
	guint interval_ms = 0;
	gboolean do_retry = TRUE;
	char *local_key = NULL;
	const char *name = NULL;
	const char *interval_spec = NULL;
	char *match_key = NULL;
	xmlNode *op = NULL;
	xmlNode *operation = NULL;

	retry:
	for (operation = pcmk__xe_first_child(rsc->ops_xml); operation != NULL;
	operation = pcmk__xe_next(operation)) {

	if (pcmk__str_eq((const char *)operation->name, "op", pcmk__str_none)) {
	bool enabled = false;

	name = crm_element_value(operation, "name");
	interval_spec = crm_element_value(operation, XML_LRM_ATTR_INTERVAL);
	if (!include_disabled && pcmk__xe_get_bool_attr(operation, "enabled", &enabled) == pcmk_rc_ok &&
	!enabled) {
	continue;
	}

	interval_ms = crm_parse_interval_spec(interval_spec);
	match_key = pcmk__op_key(rsc->id, name, interval_ms);
	if (pcmk__str_eq(key, match_key, pcmk__str_casei)) {
	op = operation;
	}
	free(match_key);

	if (rsc->clone_name) {
	match_key = pcmk__op_key(rsc->clone_name, name, interval_ms);
	if (pcmk__str_eq(key, match_key, pcmk__str_casei)) {
	op = operation;
	}
	free(match_key);
	}

	if (op != NULL) {
	free(local_key);
	return op;
	}
	}
	}

	free(local_key);
	if (do_retry == FALSE) {
	return NULL;
	}

	do_retry = FALSE;
	if (strstr(key, CRMD_ACTION_MIGRATE) \|\| strstr(key, CRMD_ACTION_MIGRATED)) {
	local_key = pcmk__op_key(rsc->id, "migrate", 0);
	key = local_key;
	goto retry;

	} else if (strstr(key, "_notify_")) {
	local_key = pcmk__op_key(rsc->id, "notify", 0);
	key = local_key;
	goto retry;
	}

	return NULL;
	}

	xmlNode *
	find_rsc_op_entry(pe_resource_t * rsc, const char *key)
	{
	return find_rsc_op_entry_helper(rsc, key, FALSE);
	}

	/*!
	* \internal
	* \brief Create a new action object
	*
	* \param[in] key Action key
	* \param[in] task Action name
	* \param[in] rsc Resource that action is for (if any)
	* \param[in] node Node that action is on (if any)
	* \param[in] optional Whether action should be considered optional
	* \param[in] for_graph Whether action should be recorded in transition graph
	* \param[in] data_set Cluster working set
	*
	* \return Newly allocated action
	* \note This function takes ownership of \p key. It is the caller's
	* responsibility to free the return value with pe_free_action().
	*/
	static pe_action_t *
	new_action(char key, const char task, pe_resource_t rsc, pe_node_t node,
	bool optional, bool for_graph, pe_working_set_t *data_set)
	{
	pe_action_t *action = calloc(1, sizeof(pe_action_t));

	CRM_ASSERT(action != NULL);

	action->rsc = rsc;
	action->task = strdup(task); CRM_ASSERT(action->task != NULL);
	action->uuid = key;
	action->extra = pcmk__strkey_table(free, free);
	action->meta = pcmk__strkey_table(free, free);

	if (node) {
	action->node = pe__copy_node(node);
	}

	if (pcmk__str_eq(task, CRM_OP_LRM_DELETE, pcmk__str_casei)) {
	// Resource history deletion for a node can be done on the DC
	pe__set_action_flags(action, pe_action_dc);
	}

	pe__set_action_flags(action, pe_action_runnable);
	if (optional) {
	pe__set_action_flags(action, pe_action_optional);
	} else {
	pe__clear_action_flags(action, pe_action_optional);
	}

	if (rsc != NULL) {
	guint interval_ms = 0;

	action->op_entry = find_rsc_op_entry_helper(rsc, key, TRUE);
	parse_op_key(key, NULL, NULL, &interval_ms);
	unpack_operation(action, action->op_entry, rsc->container, data_set,
	interval_ms);
	}

	if (for_graph) {
	pe_rsc_trace(rsc, "Created %s action %d (%s): %s for %s on %s",
	(optional? "optional" : "required"),
	data_set->action_id, key, task,
	((rsc == NULL)? "no resource" : rsc->id),
	((node == NULL)? "no node" : node->details->uname));
	action->id = data_set->action_id++;

	data_set->actions = g_list_prepend(data_set->actions, action);
	if (rsc == NULL) {
	add_singleton(data_set, action);
	} else {
	rsc->actions = g_list_prepend(rsc->actions, action);
	}
	}
	return action;
	}

	/*!
	* \internal
	* \brief Evaluate node attribute values for an action
	*
	* \param[in] action Action to unpack attributes for
	* \param[in] data_set Cluster working set
	*/
	static void
	unpack_action_node_attributes(pe_action_t action, pe_working_set_t data_set)
	{
	if (!pcmk_is_set(action->flags, pe_action_have_node_attrs)
	&& (action->op_entry != NULL)) {

	pe_rule_eval_data_t rule_data = {
	.node_hash = action->node->details->attrs,
	.role = RSC_ROLE_UNKNOWN,
	.now = data_set->now,
	.match_data = NULL,
	.rsc_data = NULL,
	.op_data = NULL
	};

	pe__set_action_flags(action, pe_action_have_node_attrs);
	pe__unpack_dataset_nvpairs(action->op_entry, XML_TAG_ATTR_SETS,
	&rule_data, action->extra, NULL,
	FALSE, data_set);
	}
	}

	/*!
	* \internal
	* \brief Update an action's optional flag
	*
	* \param[in] action Action to update
	* \param[in] optional Requested optional status
	*/
	static void
	update_action_optional(pe_action_t *action, gboolean optional)
	{
	// Force a non-recurring action to be optional if its resource is unmanaged
	if ((action->rsc != NULL) && (action->node != NULL)
	&& !pcmk_is_set(action->flags, pe_action_pseudo)
	&& !pcmk_is_set(action->rsc->flags, pe_rsc_managed)
	&& (g_hash_table_lookup(action->meta,
	XML_LRM_ATTR_INTERVAL_MS) == NULL)) {
	pe_rsc_debug(action->rsc, "%s on %s is optional (%s is unmanaged)",
	action->uuid, action->node->details->uname,
	action->rsc->id);
	pe__set_action_flags(action, pe_action_optional);
	// We shouldn't clear runnable here because ... something

	// Otherwise require the action if requested
	} else if (!optional) {
	pe__clear_action_flags(action, pe_action_optional);
	}
	}

	static enum pe_quorum_policy
	effective_quorum_policy(pe_resource_t rsc, pe_working_set_t data_set)
	{
	enum pe_quorum_policy policy = data_set->no_quorum_policy;

	if (pcmk_is_set(data_set->flags, pe_flag_have_quorum)) {
	policy = no_quorum_ignore;

	} else if (data_set->no_quorum_policy == no_quorum_demote) {
	switch (rsc->role) {
	case RSC_ROLE_PROMOTED:
	case RSC_ROLE_UNPROMOTED:
	if (rsc->next_role > RSC_ROLE_UNPROMOTED) {
	pe__set_next_role(rsc, RSC_ROLE_UNPROMOTED,
	"no-quorum-policy=demote");
	}
	policy = no_quorum_ignore;
	break;
	default:
	policy = no_quorum_stop;
	break;
	}
	}
	return policy;
	}

	/*!
	* \internal
	* \brief Update a resource action's runnable flag
	*
	* \param[in] action Action to update
	* \param[in] for_graph Whether action should be recorded in transition graph
	* \param[in] data_set Cluster working set
	*
	* \note This may also schedule fencing if a stop is unrunnable.
	*/
	static void
	update_resource_action_runnable(pe_action_t *action, bool for_graph,
	pe_working_set_t *data_set)
	{
	if (pcmk_is_set(action->flags, pe_action_pseudo)) {
	return;
	}

	if (action->node == NULL) {
	pe_rsc_trace(action->rsc, "%s is unrunnable (unallocated)",
	action->uuid);
	pe__clear_action_flags(action, pe_action_runnable);

	} else if (!pcmk_is_set(action->flags, pe_action_dc)
	&& !(action->node->details->online)
	&& (!pe__is_guest_node(action->node)
	\|\| action->node->details->remote_requires_reset)) {
	pe__clear_action_flags(action, pe_action_runnable);
	do_crm_log((for_graph? LOG_WARNING: LOG_TRACE),
	"%s on %s is unrunnable (node is offline)",
	action->uuid, action->node->details->uname);
	if (pcmk_is_set(action->rsc->flags, pe_rsc_managed)
	&& for_graph
	&& pcmk__str_eq(action->task, CRMD_ACTION_STOP, pcmk__str_casei)
	&& !(action->node->details->unclean)) {
	pe_fence_node(data_set, action->node, "stop is unrunnable", false);
	}

	} else if (!pcmk_is_set(action->flags, pe_action_dc)
	&& action->node->details->pending) {
	pe__clear_action_flags(action, pe_action_runnable);
	do_crm_log((for_graph? LOG_WARNING: LOG_TRACE),
	"Action %s on %s is unrunnable (node is pending)",
	action->uuid, action->node->details->uname);

	} else if (action->needs == rsc_req_nothing) {
	pe_action_set_reason(action, NULL, TRUE);
	if (pe__is_guest_node(action->node)
	&& !pe_can_fence(data_set, action->node)) {
	/* An action that requires nothing usually does not require any
	* fencing in order to be runnable. However, there is an exception:
	* such an action cannot be completed if it is on a guest node whose
	* host is unclean and cannot be fenced.
	*/
	pe_rsc_debug(action->rsc, "%s on %s is unrunnable "
	"(node's host cannot be fenced)",
	action->uuid, action->node->details->uname);
	pe__clear_action_flags(action, pe_action_runnable);
	} else {
	pe_rsc_trace(action->rsc,
	"%s on %s does not require fencing or quorum",
	action->uuid, action->node->details->uname);
	pe__set_action_flags(action, pe_action_runnable);
	}

	} else {
	switch (effective_quorum_policy(action->rsc, data_set)) {
	case no_quorum_stop:
	pe_rsc_debug(action->rsc, "%s on %s is unrunnable (no quorum)",
	action->uuid, action->node->details->uname);
	pe__clear_action_flags(action, pe_action_runnable);
	pe_action_set_reason(action, "no quorum", true);
	break;

	case no_quorum_freeze:
	if (!action->rsc->fns->active(action->rsc, TRUE)
	\|\| (action->rsc->next_role > action->rsc->role)) {
	pe_rsc_debug(action->rsc,
	"%s on %s is unrunnable (no quorum)",
	action->uuid, action->node->details->uname);
	pe__clear_action_flags(action, pe_action_runnable);
	pe_action_set_reason(action, "quorum freeze", true);
	}
	break;

	default:
	//pe_action_set_reason(action, NULL, TRUE);
	pe__set_action_flags(action, pe_action_runnable);
	break;
	}
	}
	}

	/*!
	* \internal
	* \brief Update a resource object's flags for a new action on it
	*
	* \param[in] rsc Resource that action is for (if any)
	* \param[in] action New action
	*/
	static void
	update_resource_flags_for_action(pe_resource_t rsc, pe_action_t action)
	{
	/* @COMPAT pe_rsc_starting and pe_rsc_stopping are not actually used
	* within Pacemaker, and should be deprecated and eventually removed
	*/
	if (pcmk__str_eq(action->task, CRMD_ACTION_STOP, pcmk__str_casei)) {
	pe__set_resource_flags(rsc, pe_rsc_stopping);

	} else if (pcmk__str_eq(action->task, CRMD_ACTION_START, pcmk__str_casei)) {
	if (pcmk_is_set(action->flags, pe_action_runnable)) {
	pe__set_resource_flags(rsc, pe_rsc_starting);
	} else {
	pe__clear_resource_flags(rsc, pe_rsc_starting);
	}
	}
	}

	static bool
	valid_stop_on_fail(const char *value)
	{
	return !pcmk__strcase_any_of(value, "standby", "demote", "stop", NULL);
	}

	static const char *
	unpack_operation_on_fail(pe_action_t * action)
	{
	const char *name = NULL;
	const char *role = NULL;
	const char *on_fail = NULL;
	const char *interval_spec = NULL;
	const char *value = g_hash_table_lookup(action->meta, XML_OP_ATTR_ON_FAIL);

	if (pcmk__str_eq(action->task, CRMD_ACTION_STOP, pcmk__str_casei)
	&& !valid_stop_on_fail(value)) {

	pcmk__config_err("Resetting '" XML_OP_ATTR_ON_FAIL "' for %s stop "
	"action to default value because '%s' is not "
	"allowed for stop", action->rsc->id, value);
	return NULL;

	} else if (pcmk__str_eq(action->task, CRMD_ACTION_DEMOTE, pcmk__str_casei) && !value) {
	// demote on_fail defaults to monitor value for promoted role if present
	xmlNode *operation = NULL;

	CRM_CHECK(action->rsc != NULL, return NULL);

	for (operation = pcmk__xe_first_child(action->rsc->ops_xml);
	(operation != NULL) && (value == NULL);
	operation = pcmk__xe_next(operation)) {
	bool enabled = false;

	if (!pcmk__str_eq((const char *)operation->name, "op", pcmk__str_none)) {
	continue;
	}
	name = crm_element_value(operation, "name");
	role = crm_element_value(operation, "role");
	on_fail = crm_element_value(operation, XML_OP_ATTR_ON_FAIL);
	interval_spec = crm_element_value(operation, XML_LRM_ATTR_INTERVAL);
	if (!on_fail) {
	continue;
	} else if (pcmk__xe_get_bool_attr(operation, "enabled", &enabled) == pcmk_rc_ok && !enabled) {
	continue;
	} else if (!pcmk__str_eq(name, "monitor", pcmk__str_casei)
	\|\| !pcmk__strcase_any_of(role, RSC_ROLE_PROMOTED_S,
	RSC_ROLE_PROMOTED_LEGACY_S,
	NULL)) {
	continue;
	} else if (crm_parse_interval_spec(interval_spec) == 0) {
	continue;
	} else if (pcmk__str_eq(on_fail, "demote", pcmk__str_casei)) {
	continue;
	}

	value = on_fail;
	}
	} else if (pcmk__str_eq(action->task, CRM_OP_LRM_DELETE, pcmk__str_casei)) {
	value = "ignore";

	} else if (pcmk__str_eq(value, "demote", pcmk__str_casei)) {
	name = crm_element_value(action->op_entry, "name");
	role = crm_element_value(action->op_entry, "role");
	interval_spec = crm_element_value(action->op_entry,
	XML_LRM_ATTR_INTERVAL);

	if (!pcmk__str_eq(name, CRMD_ACTION_PROMOTE, pcmk__str_casei)
	&& (!pcmk__str_eq(name, CRMD_ACTION_STATUS, pcmk__str_casei)
	\|\| !pcmk__strcase_any_of(role, RSC_ROLE_PROMOTED_S,
	RSC_ROLE_PROMOTED_LEGACY_S, NULL)
	\|\| (crm_parse_interval_spec(interval_spec) == 0))) {
	pcmk__config_err("Resetting '" XML_OP_ATTR_ON_FAIL "' for %s %s "
	"action to default value because 'demote' is not "
	"allowed for it", action->rsc->id, name);
	return NULL;
	}
	}

	return value;
	}

	static int
	unpack_timeout(const char *value)
	{
	int timeout_ms = crm_get_msec(value);

	if (timeout_ms < 0) {
	timeout_ms = crm_get_msec(CRM_DEFAULT_OP_TIMEOUT_S);
	}
	return timeout_ms;
	}

	// true if value contains valid, non-NULL interval origin for recurring op
	static bool
	unpack_interval_origin(const char value, xmlNode xml_obj, guint interval_ms,
	crm_time_t now, long long start_delay)
	{
	long long result = 0;
	guint interval_sec = interval_ms / 1000;
	crm_time_t *origin = NULL;

	// Ignore unspecified values and non-recurring operations
	if ((value == NULL) \|\| (interval_ms == 0) \|\| (now == NULL)) {
	return false;
	}

	// Parse interval origin from text
	origin = crm_time_new(value);
	if (origin == NULL) {
	pcmk__config_err("Ignoring '" XML_OP_ATTR_ORIGIN "' for operation "
	"'%s' because '%s' is not valid",
	(ID(xml_obj)? ID(xml_obj) : "(missing ID)"), value);
	return false;
	}

	// Get seconds since origin (negative if origin is in the future)
	result = crm_time_get_seconds(now) - crm_time_get_seconds(origin);
	crm_time_free(origin);

	// Calculate seconds from closest interval to now
	result = result % interval_sec;

	// Calculate seconds remaining until next interval
	result = ((result <= 0)? 0 : interval_sec) - result;
	crm_info("Calculated a start delay of %llds for operation '%s'",
	result,
	(ID(xml_obj)? ID(xml_obj) : "(unspecified)"));

	if (start_delay != NULL) {
	start_delay = result 1000; // milliseconds
	}
	return true;
	}

	static int
	unpack_start_delay(const char value, GHashTable meta)
	{
	int start_delay = 0;

	if (value != NULL) {
	start_delay = crm_get_msec(value);

	if (start_delay < 0) {
	start_delay = 0;
	}

	if (meta) {
	g_hash_table_replace(meta, strdup(XML_OP_ATTR_START_DELAY),
	pcmk__itoa(start_delay));
	}
	}

	return start_delay;
	}

	#if ENABLE_VERSIONED_ATTRS
	pe_rsc_action_details_t *
	pe_rsc_action_details(pe_action_t *action)
	{
	pe_rsc_action_details_t *details;

	CRM_CHECK(action != NULL, return NULL);

	if (action->action_details == NULL) {
	action->action_details = calloc(1, sizeof(pe_rsc_action_details_t));
	CRM_CHECK(action->action_details != NULL, return NULL);
	}

	details = (pe_rsc_action_details_t *) action->action_details;
	if (details->versioned_parameters == NULL) {
	details->versioned_parameters = create_xml_node(NULL,
	XML_TAG_OP_VER_ATTRS);
	}
	if (details->versioned_meta == NULL) {
	details->versioned_meta = create_xml_node(NULL, XML_TAG_OP_VER_META);
	}
	return details;
	}

	static void
	pe_free_rsc_action_details(pe_action_t *action)
	{
	pe_rsc_action_details_t *details;

	if ((action == NULL) \|\| (action->action_details == NULL)) {
	return;
	}

	details = (pe_rsc_action_details_t *) action->action_details;

	if (details->versioned_parameters) {
	free_xml(details->versioned_parameters);
	}
	if (details->versioned_meta) {
	free_xml(details->versioned_meta);
	}

	action->action_details = NULL;
	}

	static void
	unpack_versioned_meta(xmlNode versioned_meta, xmlNode xml_obj,
	guint interval_ms, crm_time_t *now)
	{
	xmlNode *attrs = NULL;
	xmlNode *attr = NULL;

	for (attrs = pcmk__xe_first_child(versioned_meta); attrs != NULL;
	attrs = pcmk__xe_next(attrs)) {

	for (attr = pcmk__xe_first_child(attrs); attr != NULL;
	attr = pcmk__xe_next(attr)) {

	const char *name = crm_element_value(attr, XML_NVPAIR_ATTR_NAME);
	const char *value = crm_element_value(attr, XML_NVPAIR_ATTR_VALUE);

	if (pcmk__str_eq(name, XML_OP_ATTR_START_DELAY, pcmk__str_casei)) {
	int start_delay = unpack_start_delay(value, NULL);

	crm_xml_add_int(attr, XML_NVPAIR_ATTR_VALUE, start_delay);
	} else if (pcmk__str_eq(name, XML_OP_ATTR_ORIGIN, pcmk__str_casei)) {
	long long start_delay = 0;

	if (unpack_interval_origin(value, xml_obj, interval_ms, now,
	&start_delay)) {
	crm_xml_add(attr, XML_NVPAIR_ATTR_NAME,
	XML_OP_ATTR_START_DELAY);
	crm_xml_add_ll(attr, XML_NVPAIR_ATTR_VALUE, start_delay);
	}
	} else if (pcmk__str_eq(name, XML_ATTR_TIMEOUT, pcmk__str_casei)) {
	int timeout_ms = unpack_timeout(value);

	crm_xml_add_int(attr, XML_NVPAIR_ATTR_VALUE, timeout_ms);
	}
	}
	}
	}
	#endif

	static xmlNode *
	find_min_interval_mon(pe_resource_t * rsc, gboolean include_disabled)
	{
	guint interval_ms = 0;
	guint min_interval_ms = G_MAXUINT;
	const char *name = NULL;
	const char *interval_spec = NULL;
	xmlNode *op = NULL;
	xmlNode *operation = NULL;

	for (operation = pcmk__xe_first_child(rsc->ops_xml);
	operation != NULL;
	operation = pcmk__xe_next(operation)) {

	if (pcmk__str_eq((const char *)operation->name, "op", pcmk__str_none)) {
	bool enabled = false;

	name = crm_element_value(operation, "name");
	interval_spec = crm_element_value(operation, XML_LRM_ATTR_INTERVAL);
	if (!include_disabled && pcmk__xe_get_bool_attr(operation, "enabled", &enabled) == pcmk_rc_ok &&
	!enabled) {
	continue;
	}

	if (!pcmk__str_eq(name, RSC_STATUS, pcmk__str_casei)) {
	continue;
	}

	interval_ms = crm_parse_interval_spec(interval_spec);

	if (interval_ms && (interval_ms < min_interval_ms)) {
	min_interval_ms = interval_ms;
	op = operation;
	}
	}
	}

	return op;
	}

	/*!
	* \brief Unpack operation XML into an action structure
	*
	* Unpack an operation's meta-attributes (normalizing the interval, timeout,
	* and start delay values as integer milliseconds), requirements, and
	* failure policy.
	*
	* \param[in,out] action Action to unpack into
	* \param[in] xml_obj Operation XML (or NULL if all defaults)
	* \param[in] container Resource that contains affected resource, if any
	* \param[in] data_set Cluster state
	* \param[in] interval_ms How frequently to perform the operation
	*/
	static void
	unpack_operation(pe_action_t * action, xmlNode * xml_obj, pe_resource_t * container,
	pe_working_set_t * data_set, guint interval_ms)
	{
	int timeout_ms = 0;
	const char *value = NULL;
	bool is_probe = false;
	#if ENABLE_VERSIONED_ATTRS
	pe_rsc_action_details_t *rsc_details = NULL;
	#endif

	pe_rsc_eval_data_t rsc_rule_data = {
	.standard = crm_element_value(action->rsc->xml, XML_AGENT_ATTR_CLASS),
	.provider = crm_element_value(action->rsc->xml, XML_AGENT_ATTR_PROVIDER),
	.agent = crm_element_value(action->rsc->xml, XML_EXPR_ATTR_TYPE)
	};

	pe_op_eval_data_t op_rule_data = {
	.op_name = action->task,
	.interval = interval_ms
	};

	pe_rule_eval_data_t rule_data = {
	.node_hash = NULL,
	.role = RSC_ROLE_UNKNOWN,
	.now = data_set->now,
	.match_data = NULL,
	.rsc_data = &rsc_rule_data,
	.op_data = &op_rule_data
	};

	CRM_CHECK(action && action->rsc, return);

	is_probe = pcmk_is_probe(action->task, interval_ms);

	// Cluster-wide <op_defaults> <meta_attributes>
	pe__unpack_dataset_nvpairs(data_set->op_defaults, XML_TAG_META_SETS, &rule_data,
	action->meta, NULL, FALSE, data_set);

	// Determine probe default timeout differently
	if (is_probe) {
	xmlNode *min_interval_mon = find_min_interval_mon(action->rsc, FALSE);

	if (min_interval_mon) {
	value = crm_element_value(min_interval_mon, XML_ATTR_TIMEOUT);
	if (value) {
	crm_trace("\t%s: Setting default timeout to minimum-interval "
	"monitor's timeout '%s'", action->uuid, value);
	g_hash_table_replace(action->meta, strdup(XML_ATTR_TIMEOUT),
	strdup(value));
	}
	}
	}

	if (xml_obj) {
	xmlAttrPtr xIter = NULL;

	// <op> <meta_attributes> take precedence over defaults
	pe__unpack_dataset_nvpairs(xml_obj, XML_TAG_META_SETS, &rule_data,
	action->meta, NULL, TRUE, data_set);

	#if ENABLE_VERSIONED_ATTRS
	rsc_details = pe_rsc_action_details(action);

	/* Non-versioned attributes also unpack XML_TAG_ATTR_SETS, but that
	* capability is deprecated, so we don't need to extend that support to
	* versioned attributes.
	*/
	pe_eval_versioned_attributes(data_set->input, xml_obj,
	XML_TAG_META_SETS, &rule_data,
	rsc_details->versioned_meta,
	NULL);
	#endif

	/* Anything set as an <op> XML property has highest precedence.
	* This ensures we use the name and interval from the <op> tag.
	*/
	for (xIter = xml_obj->properties; xIter; xIter = xIter->next) {
	const char prop_name = (const char )xIter->name;
	const char *prop_value = crm_element_value(xml_obj, prop_name);

	g_hash_table_replace(action->meta, strdup(prop_name), strdup(prop_value));
	}
	}

	g_hash_table_remove(action->meta, "id");

	// Normalize interval to milliseconds
	if (interval_ms > 0) {
	g_hash_table_replace(action->meta, strdup(XML_LRM_ATTR_INTERVAL),
	crm_strdup_printf("%u", interval_ms));
	} else {
	g_hash_table_remove(action->meta, XML_LRM_ATTR_INTERVAL);
	}

	/*
	* Timeout order of precedence:
	* 1. pcmk_monitor_timeout (if rsc has pcmk_ra_cap_fence_params
	* and task is start or a probe; pcmk_monitor_timeout works
	* by default for a recurring monitor)
	* 2. explicit op timeout on the primitive
	* 3. default op timeout
	* a. if probe, then min-interval monitor's timeout
	* b. else, in XML_CIB_TAG_OPCONFIG
	* 4. CRM_DEFAULT_OP_TIMEOUT_S
	*
	* #1 overrides general rule of <op> XML property having highest
	* precedence.
	*/
	if (pcmk_is_set(pcmk_get_ra_caps(rsc_rule_data.standard),
	pcmk_ra_cap_fence_params)
	&& (pcmk__str_eq(action->task, RSC_START, pcmk__str_casei)
	\|\| is_probe)) {

	GHashTable *params = pe_rsc_params(action->rsc, action->node, data_set);

	value = g_hash_table_lookup(params, "pcmk_monitor_timeout");

	if (value) {
	crm_trace("\t%s: Setting timeout to pcmk_monitor_timeout '%s', "
	"overriding default", action->uuid, value);
	g_hash_table_replace(action->meta, strdup(XML_ATTR_TIMEOUT),
	strdup(value));
	}
	}

	// Normalize timeout to positive milliseconds
	value = g_hash_table_lookup(action->meta, XML_ATTR_TIMEOUT);
	timeout_ms = unpack_timeout(value);
	g_hash_table_replace(action->meta, strdup(XML_ATTR_TIMEOUT),
	pcmk__itoa(timeout_ms));

	if (!pcmk__strcase_any_of(action->task, RSC_START, RSC_PROMOTE, NULL)) {
	action->needs = rsc_req_nothing;
	value = "nothing (not start or promote)";

	} else if (pcmk_is_set(action->rsc->flags, pe_rsc_needs_fencing)) {
	action->needs = rsc_req_stonith;
	value = "fencing";

	} else if (pcmk_is_set(action->rsc->flags, pe_rsc_needs_quorum)) {
	action->needs = rsc_req_quorum;
	value = "quorum";

	} else {
	action->needs = rsc_req_nothing;
	value = "nothing";
	}
	pe_rsc_trace(action->rsc, "%s requires %s", action->uuid, value);

	value = unpack_operation_on_fail(action);

	if (value == NULL) {

	} else if (pcmk__str_eq(value, "block", pcmk__str_casei)) {
	action->on_fail = action_fail_block;
	g_hash_table_insert(action->meta, strdup(XML_OP_ATTR_ON_FAIL), strdup("block"));
	value = "block"; // The above could destroy the original string

	} else if (pcmk__str_eq(value, "fence", pcmk__str_casei)) {
	action->on_fail = action_fail_fence;
	value = "node fencing";

	if (!pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
	pcmk__config_err("Resetting '" XML_OP_ATTR_ON_FAIL "' for "
	"operation '%s' to 'stop' because 'fence' is not "
	"valid when fencing is disabled", action->uuid);
	action->on_fail = action_fail_stop;
	action->fail_role = RSC_ROLE_STOPPED;
	value = "stop resource";
	}

	} else if (pcmk__str_eq(value, "standby", pcmk__str_casei)) {
	action->on_fail = action_fail_standby;
	value = "node standby";

	} else if (pcmk__strcase_any_of(value, "ignore", PCMK__VALUE_NOTHING,
	NULL)) {
	action->on_fail = action_fail_ignore;
	value = "ignore";

	} else if (pcmk__str_eq(value, "migrate", pcmk__str_casei)) {
	action->on_fail = action_fail_migrate;
	value = "force migration";

	} else if (pcmk__str_eq(value, "stop", pcmk__str_casei)) {
	action->on_fail = action_fail_stop;
	action->fail_role = RSC_ROLE_STOPPED;
	value = "stop resource";

	} else if (pcmk__str_eq(value, "restart", pcmk__str_casei)) {
	action->on_fail = action_fail_recover;
	value = "restart (and possibly migrate)";

	} else if (pcmk__str_eq(value, "restart-container", pcmk__str_casei)) {
	if (container) {
	action->on_fail = action_fail_restart_container;
	value = "restart container (and possibly migrate)";

	} else {
	value = NULL;
	}

	} else if (pcmk__str_eq(value, "demote", pcmk__str_casei)) {
	action->on_fail = action_fail_demote;
	value = "demote instance";

	} else {
	pe_err("Resource %s: Unknown failure type (%s)", action->rsc->id, value);
	value = NULL;
	}

	/* defaults */
	if (value == NULL && container) {
	action->on_fail = action_fail_restart_container;
	value = "restart container (and possibly migrate) (default)";

	/* For remote nodes, ensure that any failure that results in dropping an
	* active connection to the node results in fencing of the node.
	*
	* There are only two action failures that don't result in fencing.
	* 1. probes - probe failures are expected.
	* 2. start - a start failure indicates that an active connection does not already
	* exist. The user can set op on-fail=fence if they really want to fence start
	* failures. */
	} else if (((value == NULL) \|\| !pcmk_is_set(action->rsc->flags, pe_rsc_managed))
	&& pe__resource_is_remote_conn(action->rsc, data_set)
	&& !(pcmk__str_eq(action->task, CRMD_ACTION_STATUS, pcmk__str_casei)
	&& (interval_ms == 0))
	&& !pcmk__str_eq(action->task, CRMD_ACTION_START, pcmk__str_casei)) {

	if (!pcmk_is_set(action->rsc->flags, pe_rsc_managed)) {
	action->on_fail = action_fail_stop;
	action->fail_role = RSC_ROLE_STOPPED;
	value = "stop unmanaged remote node (enforcing default)";

	} else {
	if (pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
	value = "fence remote node (default)";
	} else {
	value = "recover remote node connection (default)";
	}

	if (action->rsc->remote_reconnect_ms) {
	action->fail_role = RSC_ROLE_STOPPED;
	}
	action->on_fail = action_fail_reset_remote;
	}

	} else if (value == NULL && pcmk__str_eq(action->task, CRMD_ACTION_STOP, pcmk__str_casei)) {
	if (pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
	action->on_fail = action_fail_fence;
	value = "resource fence (default)";

	} else {
	action->on_fail = action_fail_block;
	value = "resource block (default)";
	}

	} else if (value == NULL) {
	action->on_fail = action_fail_recover;
	value = "restart (and possibly migrate) (default)";
	}

	pe_rsc_trace(action->rsc, "%s failure handling: %s",
	action->uuid, value);

	value = NULL;
	if (xml_obj != NULL) {
	value = g_hash_table_lookup(action->meta, "role_after_failure");
	if (value) {
	pe_warn_once(pe_wo_role_after,
	"Support for role_after_failure is deprecated and will be removed in a future release");
	}
	}
	if (value != NULL && action->fail_role == RSC_ROLE_UNKNOWN) {
	action->fail_role = text2role(value);
	}
	/* defaults */
	if (action->fail_role == RSC_ROLE_UNKNOWN) {
	if (pcmk__str_eq(action->task, CRMD_ACTION_PROMOTE, pcmk__str_casei)) {
	action->fail_role = RSC_ROLE_UNPROMOTED;
	} else {
	action->fail_role = RSC_ROLE_STARTED;
	}
	}
	pe_rsc_trace(action->rsc, "%s failure results in: %s",
	action->uuid, role2text(action->fail_role));

	value = g_hash_table_lookup(action->meta, XML_OP_ATTR_START_DELAY);
	if (value) {
	unpack_start_delay(value, action->meta);
	} else {
	long long start_delay = 0;

	value = g_hash_table_lookup(action->meta, XML_OP_ATTR_ORIGIN);
	if (unpack_interval_origin(value, xml_obj, interval_ms, data_set->now,
	&start_delay)) {
	g_hash_table_replace(action->meta, strdup(XML_OP_ATTR_START_DELAY),
	crm_strdup_printf("%lld", start_delay));
	}
	}

	#if ENABLE_VERSIONED_ATTRS
	unpack_versioned_meta(rsc_details->versioned_meta, xml_obj, interval_ms,
	data_set->now);
	#endif
	}

	/*!
	* \brief Create or update an action object
	*
	* \param[in] rsc Resource that action is for (if any)
	* \param[in] key Action key (must be non-NULL)
	* \param[in] task Action name (must be non-NULL)
	* \param[in] on_node Node that action is on (if any)
	* \param[in] optional Whether action should be considered optional
	* \param[in] save_action Whether action should be recorded in transition graph
	* \param[in] data_set Cluster working set
	*
	* \return Action object corresponding to arguments
	* \note This function takes ownership of (and might free) \p key. If
	* \p save_action is true, \p data_set will own the returned action,
	* otherwise it is the caller's responsibility to free the return value
	* with pe_free_action().
	*/
	pe_action_t *
	custom_action(pe_resource_t rsc, char key, const char *task,
	pe_node_t *on_node, gboolean optional, gboolean save_action,
	pe_working_set_t *data_set)
	{
	pe_action_t *action = NULL;

	CRM_ASSERT((key != NULL) && (task != NULL) && (data_set != NULL));

	if (save_action) {
	action = find_existing_action(key, rsc, on_node, data_set);
	}

	if (action == NULL) {
	action = new_action(key, task, rsc, on_node, optional, save_action,
	data_set);
	} else {
	free(key);
	}

	update_action_optional(action, optional);

	if (rsc != NULL) {
	if (action->node != NULL) {
	unpack_action_node_attributes(action, data_set);
	}

	update_resource_action_runnable(action, save_action, data_set);

	if (save_action) {
	update_resource_flags_for_action(rsc, action);
	}
	}

	return action;
	}

	pe_action_t *
	get_pseudo_op(const char name, pe_working_set_t data_set)
	{
	pe_action_t *op = lookup_singleton(data_set, name);

	if (op == NULL) {
	op = custom_action(NULL, strdup(name), name, NULL, TRUE, TRUE, data_set);
	pe__set_action_flags(op, pe_action_pseudo\|pe_action_runnable);
	}
	return op;
	}

	static GList *
	find_unfencing_devices(GList candidates, GList matches)
	{
	for (GList *gIter = candidates; gIter != NULL; gIter = gIter->next) {
	pe_resource_t *candidate = gIter->data;

	if (candidate->children != NULL) {
	matches = find_unfencing_devices(candidate->children, matches);

	} else if (!pcmk_is_set(candidate->flags, pe_rsc_fence_device)) {
	continue;

	} else if (pcmk_is_set(candidate->flags, pe_rsc_needs_unfencing)) {
	matches = g_list_prepend(matches, candidate);

	} else if (pcmk__str_eq(g_hash_table_lookup(candidate->meta,
	PCMK_STONITH_PROVIDES),
	PCMK__VALUE_UNFENCING,
	pcmk__str_casei)) {
	matches = g_list_prepend(matches, candidate);
	}
	}
	return matches;
	}

	static int
	node_priority_fencing_delay(pe_node_t * node, pe_working_set_t * data_set)
	{
	int member_count = 0;
	int online_count = 0;
	int top_priority = 0;
	int lowest_priority = 0;
	GList *gIter = NULL;

	// `priority-fencing-delay` is disabled
	if (data_set->priority_fencing_delay <= 0) {
	return 0;
	}

	/* No need to request a delay if the fencing target is not a normal cluster
	* member, for example if it's a remote node or a guest node. */
	if (node->details->type != node_member) {
	return 0;
	}

	// No need to request a delay if the fencing target is in our partition
	if (node->details->online) {
	return 0;
	}

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

	if (n->details->type != node_member) {
	continue;
	}

	member_count ++;

	if (n->details->online) {
	online_count++;
	}

	if (member_count == 1
	\|\| n->details->priority > top_priority) {
	top_priority = n->details->priority;
	}

	if (member_count == 1
	\|\| n->details->priority < lowest_priority) {
	lowest_priority = n->details->priority;
	}
	}

	// No need to delay if we have more than half of the cluster members
	if (online_count > member_count / 2) {
	return 0;
	}

	/* All the nodes have equal priority.
	* Any configured corresponding `pcmk_delay_base/max` will be applied. */
	if (lowest_priority == top_priority) {
	return 0;
	}

	if (node->details->priority < top_priority) {
	return 0;
	}

	return data_set->priority_fencing_delay;
	}

	pe_action_t *
	pe_fence_op(pe_node_t * node, const char op, bool optional, const char reason,
	bool priority_delay, pe_working_set_t * data_set)
	{
	char *op_key = NULL;
	pe_action_t *stonith_op = NULL;

	if(op == NULL) {
	op = data_set->stonith_action;
	}

	op_key = crm_strdup_printf("%s-%s-%s", CRM_OP_FENCE, node->details->uname, op);

	stonith_op = lookup_singleton(data_set, op_key);
	if(stonith_op == NULL) {
	stonith_op = custom_action(NULL, op_key, CRM_OP_FENCE, node, TRUE, 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);

	- if (pe__is_guest_or_remote_node(node)
	- && pcmk_is_set(data_set->flags, pe_flag_enable_unfencing)) {
	- /* Extra work to detect device changes on remotes
	- *
	- * We may do this for all nodes in the future, but for now
	- * the pcmk__check_action_config() based stuff works fine.
	+ if (pcmk_is_set(data_set->flags, pe_flag_enable_unfencing)) {
	+ /* Extra work to detect device changes
	*/
	long max = 1024;
	long digests_all_offset = 0;
	long digests_secure_offset = 0;

	char *digests_all = calloc(max, sizeof(char));
	char *digests_secure = calloc(max, sizeof(char));
	GList *matches = find_unfencing_devices(data_set->resources, NULL);

	for (GList *gIter = matches; gIter != NULL; gIter = gIter->next) {
	pe_resource_t *match = gIter->data;
	const char *agent = g_hash_table_lookup(match->meta,
	XML_ATTR_TYPE);
	op_digest_cache_t *data = NULL;

	data = pe__compare_fencing_digest(match, agent, node, data_set);
	if(data->rc == RSC_DIGEST_ALL) {
	optional = FALSE;
	crm_notice("Unfencing %s (remote): because the definition of %s changed", node->details->uname, match->id);
	if (!pcmk__is_daemon && data_set->priv != NULL) {
	pcmk__output_t *out = data_set->priv;
	out->info(out, "notice: Unfencing %s (remote): because the definition of %s changed",
	node->details->uname, match->id);
	}
	}

	digests_all_offset += snprintf(
	digests_all+digests_all_offset, max-digests_all_offset,
	"%s:%s:%s,", match->id, agent, data->digest_all_calc);

	digests_secure_offset += snprintf(
	digests_secure+digests_secure_offset, max-digests_secure_offset,
	"%s:%s:%s,", match->id, agent, data->digest_secure_calc);
	}
	g_hash_table_insert(stonith_op->meta,
	strdup(XML_OP_ATTR_DIGESTS_ALL),
	digests_all);
	g_hash_table_insert(stonith_op->meta,
	strdup(XML_OP_ATTR_DIGESTS_SECURE),
	digests_secure);
	}

	} else {
	free(op_key);
	}

	if (data_set->priority_fencing_delay > 0

	/* It's a suitable case where `priority-fencing-delay` applies.
	* At least add `priority-fencing-delay` field as an indicator. */
	&& (priority_delay

	/* The priority delay needs to be recalculated if this function has
	* been called by schedule_fencing_and_shutdowns() after node
	* priority has already been calculated by native_add_running().
	*/
	\|\| g_hash_table_lookup(stonith_op->meta,
	XML_CONFIG_ATTR_PRIORITY_FENCING_DELAY) != NULL)) {

	/* Add `priority-fencing-delay` to the fencing op even if it's 0 for
	* the targeting node. So that it takes precedence over any possible
	* `pcmk_delay_base/max`.
	*/
	char *delay_s = pcmk__itoa(node_priority_fencing_delay(node, data_set));

	g_hash_table_insert(stonith_op->meta,
	strdup(XML_CONFIG_ATTR_PRIORITY_FENCING_DELAY),
	delay_s);
	}

	if(optional == FALSE && pe_can_fence(data_set, node)) {
	pe__clear_action_flags(stonith_op, pe_action_optional);
	pe_action_set_reason(stonith_op, reason, false);

	} else if(reason && stonith_op->reason == NULL) {
	stonith_op->reason = strdup(reason);
	}

	return stonith_op;
	}

	void
	pe_free_action(pe_action_t * action)
	{
	if (action == NULL) {
	return;
	}
	g_list_free_full(action->actions_before, free); /* pe_action_wrapper_t* */
	g_list_free_full(action->actions_after, free); /* pe_action_wrapper_t* */
	if (action->extra) {
	g_hash_table_destroy(action->extra);
	}
	if (action->meta) {
	g_hash_table_destroy(action->meta);
	}
	#if ENABLE_VERSIONED_ATTRS
	if (action->rsc) {
	pe_free_rsc_action_details(action);
	}
	#endif
	free(action->cancel_task);
	free(action->reason);
	free(action->task);
	free(action->uuid);
	free(action->node);
	free(action);
	}

	int
	pe_get_configured_timeout(pe_resource_t rsc, const char action, pe_working_set_t *data_set)
	{
	xmlNode *child = NULL;
	GHashTable *action_meta = NULL;
	const char *timeout_spec = NULL;
	int timeout_ms = 0;

	pe_rule_eval_data_t rule_data = {
	.node_hash = NULL,
	.role = RSC_ROLE_UNKNOWN,
	.now = data_set->now,
	.match_data = NULL,
	.rsc_data = NULL,
	.op_data = NULL
	};

	for (child = first_named_child(rsc->ops_xml, XML_ATTR_OP);
	child != NULL; child = crm_next_same_xml(child)) {
	if (pcmk__str_eq(action, crm_element_value(child, XML_NVPAIR_ATTR_NAME),
	pcmk__str_casei)) {
	timeout_spec = crm_element_value(child, XML_ATTR_TIMEOUT);
	break;
	}
	}

	if (timeout_spec == NULL && data_set->op_defaults) {
	action_meta = pcmk__strkey_table(free, free);
	pe__unpack_dataset_nvpairs(data_set->op_defaults, XML_TAG_META_SETS,
	&rule_data, action_meta, NULL, FALSE, data_set);
	timeout_spec = g_hash_table_lookup(action_meta, XML_ATTR_TIMEOUT);
	}

	// @TODO check meta-attributes (including versioned meta-attributes)
	// @TODO maybe use min-interval monitor timeout as default for monitors

	timeout_ms = crm_get_msec(timeout_spec);
	if (timeout_ms < 0) {
	timeout_ms = crm_get_msec(CRM_DEFAULT_OP_TIMEOUT_S);
	}

	if (action_meta != NULL) {
	g_hash_table_destroy(action_meta);
	}
	return timeout_ms;
	}

	enum action_tasks
	get_complex_task(pe_resource_t * rsc, const char *name, gboolean allow_non_atomic)
	{
	enum action_tasks task = text2task(name);

	if (rsc == NULL) {
	return task;

	} else if (allow_non_atomic == FALSE \|\| rsc->variant == pe_native) {
	switch (task) {
	case stopped_rsc:
	case started_rsc:
	case action_demoted:
	case action_promoted:
	crm_trace("Folding %s back into its atomic counterpart for %s", name, rsc->id);
	return task - 1;
	default:
	break;
	}
	}
	return task;
	}

	pe_action_t *
	find_first_action(GList input, const char uuid, const char task, pe_node_t on_node)
	{
	GList *gIter = NULL;

	CRM_CHECK(uuid \|\| task, return NULL);

	for (gIter = input; gIter != NULL; gIter = gIter->next) {
	pe_action_t action = (pe_action_t ) gIter->data;

	if (uuid != NULL && !pcmk__str_eq(uuid, action->uuid, pcmk__str_casei)) {
	continue;

	} else if (task != NULL && !pcmk__str_eq(task, action->task, pcmk__str_casei)) {
	continue;

	} else if (on_node == NULL) {
	return action;

	} else if (action->node == NULL) {
	continue;

	} else if (on_node->details == action->node->details) {
	return action;
	}
	}

	return NULL;
	}

	GList *
	find_actions(GList input, const char key, const pe_node_t *on_node)
	{
	GList *gIter = input;
	GList *result = NULL;

	CRM_CHECK(key != NULL, return NULL);

	for (; gIter != NULL; gIter = gIter->next) {
	pe_action_t action = (pe_action_t ) gIter->data;

	if (!pcmk__str_eq(key, action->uuid, pcmk__str_casei)) {
	continue;

	} else if (on_node == NULL) {
	crm_trace("Action %s matches (ignoring node)", key);
	result = g_list_prepend(result, action);

	} else if (action->node == NULL) {
	crm_trace("Action %s matches (unallocated, assigning to %s)",
	key, on_node->details->uname);

	action->node = pe__copy_node(on_node);
	result = g_list_prepend(result, action);

	} else if (on_node->details == action->node->details) {
	crm_trace("Action %s on %s matches", key, on_node->details->uname);
	result = g_list_prepend(result, action);
	}
	}

	return result;
	}

	GList *
	find_actions_exact(GList input, const char key, const pe_node_t *on_node)
	{
	GList *result = NULL;

	CRM_CHECK(key != NULL, return NULL);

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

	for (GList *gIter = input; gIter != NULL; gIter = gIter->next) {
	pe_action_t action = (pe_action_t ) gIter->data;

	if ((action->node != NULL)
	&& pcmk__str_eq(key, action->uuid, pcmk__str_casei)
	&& pcmk__str_eq(on_node->details->id, action->node->details->id,
	pcmk__str_casei)) {

	crm_trace("Action %s on %s matches", key, on_node->details->uname);
	result = g_list_prepend(result, action);
	}
	}

	return result;
	}

	/*!
	* \brief Find all actions of given type for a resource
	*
	* \param[in] rsc Resource to search
	* \param[in] node Find only actions scheduled on this node
	* \param[in] task Action name to search for
	* \param[in] require_node If TRUE, NULL node or action node will not match
	*
	* \return List of actions found (or NULL if none)
	* \note If node is not NULL and require_node is FALSE, matching actions
	* without a node will be assigned to node.
	*/
	GList *
	pe__resource_actions(const pe_resource_t rsc, const pe_node_t node,
	const char *task, bool require_node)
	{
	GList *result = NULL;
	char *key = pcmk__op_key(rsc->id, task, 0);

	if (require_node) {
	result = find_actions_exact(rsc->actions, key, node);
	} else {
	result = find_actions(rsc->actions, key, node);
	}
	free(key);
	return result;
	}

	/*!
	* \internal
	* \brief Create an action reason string based on the action itself
	*
	* \param[in] action Action to create reason string for
	* \param[in] flag Action flag that was cleared
	*
	* \return Newly allocated string suitable for use as action reason
	* \note It is the caller's responsibility to free() the result.
	*/
	char *
	pe__action2reason(pe_action_t *action, enum pe_action_flags flag)
	{
	const char *change = NULL;

	switch (flag) {
	case pe_action_runnable:
	case pe_action_migrate_runnable:
	change = "unrunnable";
	break;
	case pe_action_optional:
	change = "required";
	break;
	default:
	// Bug: caller passed unsupported flag
	CRM_CHECK(change != NULL, change = "");
	break;
	}
	return crm_strdup_printf("%s%s%s %s", change,
	(action->rsc == NULL)? "" : " ",
	(action->rsc == NULL)? "" : action->rsc->id,
	action->task);
	}

	void pe_action_set_reason(pe_action_t action, const char reason, bool overwrite)
	{
	if (action->reason != NULL && overwrite) {
	pe_rsc_trace(action->rsc, "Changing %s reason from '%s' to '%s'",
	action->uuid, action->reason, pcmk__s(reason, "(none)"));
	} else if (action->reason == NULL) {
	pe_rsc_trace(action->rsc, "Set %s reason to '%s'",
	action->uuid, pcmk__s(reason, "(none)"));
	} else {
	// crm_assert(action->reason != NULL && !overwrite);
	return;
	}

	pcmk__str_update(&action->reason, reason);
	}

	/*!
	* \internal
	* \brief Create an action to clear a resource's history from CIB
	*
	* \param[in] rsc Resource to clear
	* \param[in] node Node to clear history on
	*
	* \return New action to clear resource history
	*/
	pe_action_t *
	pe__clear_resource_history(pe_resource_t rsc, pe_node_t node,
	pe_working_set_t *data_set)
	{
	char *key = NULL;

	CRM_ASSERT(rsc && node);
	key = pcmk__op_key(rsc->id, CRM_OP_LRM_DELETE, 0);
	return custom_action(rsc, key, CRM_OP_LRM_DELETE, node, FALSE, TRUE,
	data_set);
	}

	#define sort_return(an_int, why) do { \
	free(a_uuid); \
	free(b_uuid); \
	crm_trace("%s (%d) %c %s (%d) : %s", \
	a_xml_id, a_call_id, an_int>0?'>':an_int<0?'<':'=', \
	b_xml_id, b_call_id, why); \
	return an_int; \
	} while(0)

	int
	pe__is_newer_op(const xmlNode xml_a, const xmlNode xml_b,
	bool same_node_default)
	{
	int a_call_id = -1;
	int b_call_id = -1;

	char *a_uuid = NULL;
	char *b_uuid = NULL;

	const char *a_xml_id = crm_element_value(xml_a, XML_ATTR_ID);
	const char *b_xml_id = crm_element_value(xml_b, XML_ATTR_ID);

	const char *a_node = crm_element_value(xml_a, XML_LRM_ATTR_TARGET);
	const char *b_node = crm_element_value(xml_b, XML_LRM_ATTR_TARGET);
	bool same_node = true;

	/* @COMPAT The on_node attribute was added to last_failure as of 1.1.13 (via
	* 8b3ca1c) and the other entries as of 1.1.12 (via 0b07b5c).
	*
	* In case that any of the lrm_rsc_op entries doesn't have on_node
	* attribute, we need to explicitly tell whether the two operations are on
	* the same node.
	*/
	if (a_node == NULL \|\| b_node == NULL) {
	same_node = same_node_default;

	} else {
	same_node = pcmk__str_eq(a_node, b_node, pcmk__str_casei);
	}

	if (same_node && pcmk__str_eq(a_xml_id, b_xml_id, pcmk__str_none)) {
	/* We have duplicate lrm_rsc_op entries in the status
	* section which is unlikely to be a good thing
	* - we can handle it easily enough, but we need to get
	* to the bottom of why it's happening.
	*/
	pe_err("Duplicate lrm_rsc_op entries named %s", a_xml_id);
	sort_return(0, "duplicate");
	}

	crm_element_value_int(xml_a, XML_LRM_ATTR_CALLID, &a_call_id);
	crm_element_value_int(xml_b, XML_LRM_ATTR_CALLID, &b_call_id);

	if (a_call_id == -1 && b_call_id == -1) {
	/* both are pending ops so it doesn't matter since
	* stops are never pending
	*/
	sort_return(0, "pending");

	} else if (same_node && a_call_id >= 0 && a_call_id < b_call_id) {
	sort_return(-1, "call id");

	} else if (same_node && b_call_id >= 0 && a_call_id > b_call_id) {
	sort_return(1, "call id");

	} else if (a_call_id >= 0 && b_call_id >= 0
	&& (!same_node \|\| a_call_id == b_call_id)) {
	/*
	* The op and last_failed_op are the same
	* Order on last-rc-change
	*/
	time_t last_a = -1;
	time_t last_b = -1;

	crm_element_value_epoch(xml_a, XML_RSC_OP_LAST_CHANGE, &last_a);
	crm_element_value_epoch(xml_b, XML_RSC_OP_LAST_CHANGE, &last_b);

	crm_trace("rc-change: %lld vs %lld",
	(long long) last_a, (long long) last_b);
	if (last_a >= 0 && last_a < last_b) {
	sort_return(-1, "rc-change");

	} else if (last_b >= 0 && last_a > last_b) {
	sort_return(1, "rc-change");
	}
	sort_return(0, "rc-change");

	} else {
	/* One of the inputs is a pending operation
	* Attempt to use XML_ATTR_TRANSITION_MAGIC to determine its age relative to the other
	*/

	int a_id = -1;
	int b_id = -1;

	const char *a_magic = crm_element_value(xml_a, XML_ATTR_TRANSITION_MAGIC);
	const char *b_magic = crm_element_value(xml_b, XML_ATTR_TRANSITION_MAGIC);

	CRM_CHECK(a_magic != NULL && b_magic != NULL, sort_return(0, "No magic"));
	if (!decode_transition_magic(a_magic, &a_uuid, &a_id, NULL, NULL, NULL,
	NULL)) {
	sort_return(0, "bad magic a");
	}
	if (!decode_transition_magic(b_magic, &b_uuid, &b_id, NULL, NULL, NULL,
	NULL)) {
	sort_return(0, "bad magic b");
	}
	/* try to determine the relative age of the operation...
	* some pending operations (e.g. a start) may have been superseded
	* by a subsequent stop
	*
	* [a\|b]_id == -1 means it's a shutdown operation and _always_ comes last
	*/
	if (!pcmk__str_eq(a_uuid, b_uuid, pcmk__str_casei) \|\| a_id == b_id) {
	/*
	* some of the logic in here may be redundant...
	*
	* if the UUID from the TE doesn't match then one better
	* be a pending operation.
	* pending operations don't survive between elections and joins
	* because we query the LRM directly
	*/

	if (b_call_id == -1) {
	sort_return(-1, "transition + call");

	} else if (a_call_id == -1) {
	sort_return(1, "transition + call");
	}

	} else if ((a_id >= 0 && a_id < b_id) \|\| b_id == -1) {
	sort_return(-1, "transition");

	} else if ((b_id >= 0 && a_id > b_id) \|\| a_id == -1) {
	sort_return(1, "transition");
	}
	}

	/* we should never end up here */
	CRM_CHECK(FALSE, sort_return(0, "default"));
	}

	gint
	sort_op_by_callid(gconstpointer a, gconstpointer b)
	{
	const xmlNode *xml_a = a;
	const xmlNode *xml_b = b;

	return pe__is_newer_op(xml_a, xml_b, true);
	}

	/*!
	* \internal
	* \brief Create a new pseudo-action for a resource
	*
	* \param[in] rsc Resource to create action for
	* \param[in] task Action name
	* \param[in] optional Whether action should be considered optional
	* \param[in] runnable Whethe action should be considered runnable
	*
	* \return New action object corresponding to arguments
	*/
	pe_action_t *
	pe__new_rsc_pseudo_action(pe_resource_t rsc, const char task, bool optional,
	bool runnable)
	{
	pe_action_t *action = NULL;

	CRM_ASSERT((rsc != NULL) && (task != NULL));

	action = custom_action(rsc, pcmk__op_key(rsc->id, task, 0), task, NULL,
	optional, TRUE, rsc->cluster);
	pe__set_action_flags(action, pe_action_pseudo);
	if (runnable) {
	pe__set_action_flags(action, pe_action_runnable);
	}
	return action;
	}

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