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	diff --git a/include/crm/common/options_internal.h b/include/crm/common/options_internal.h
	index 9e3bfdfa83..8aeb92ecad 100644
	--- a/include/crm/common/options_internal.h
	+++ b/include/crm/common/options_internal.h
	@@ -1,253 +1,250 @@
	/*
	* Copyright 2006-2024 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.
	*/

	#ifndef PCMK__CRM_COMMON_OPTIONS_INTERNAL__H
	#define PCMK__CRM_COMMON_OPTIONS_INTERNAL__H

	#ifndef PCMK__CONFIG_H
	#define PCMK__CONFIG_H
	#include <config.h> // _Noreturn
	#endif

	#include <glib.h> // GHashTable
	#include <stdbool.h> // bool

	#include <crm/common/strings.h> // pcmk_parse_interval_spec()
	#include <crm/common/output_internal.h> // pcmk__output_t

	#ifdef __cplusplus
	extern "C" {
	#endif

	_Noreturn void pcmk__cli_help(char cmd);


	/*
	* Environment variable option handling
	*/

	const char pcmk__env_option(const char option);
	void pcmk__set_env_option(const char option, const char value, bool compat);
	bool pcmk__env_option_enabled(const char daemon, const char option);


	/*
	* Cluster option handling
	*/

	/*!
	* \internal
	* \enum pcmk__opt_flags
	* \brief Option flags
	*/
	enum pcmk__opt_flags {
	pcmk__opt_none = 0U, //!< No additional information

	/*!
	* \brief In CIB manager metadata
	*
	* \deprecated This flag will be removed with CIB manager metadata
	*/
	pcmk__opt_based = (1U << 0),

	/*!
	* \brief In controller metadata
	*
	* \deprecated This flag will be removed with controller metadata
	*/
	pcmk__opt_controld = (1U << 1),

	/*!
	* \brief In scheduler metadata
	*
	* \deprecated This flag will be removed with scheduler metadata
	*/
	pcmk__opt_schedulerd = (1U << 2),

	pcmk__opt_advanced = (1U << 3), //!< Advanced use only
	pcmk__opt_generated = (1U << 4), //!< Generated by Pacemaker
	pcmk__opt_deprecated = (1U << 5), //!< Option is deprecated
	pcmk__opt_fencing = (1U << 6), //!< Common fencing resource parameter
	pcmk__opt_primitive = (1U << 7), //!< Primitive resource meta-attribute
	};

	typedef struct pcmk__cluster_option_s {
	const char *name;
	const char *alt_name;
	const char *type;
	const char *values;
	const char *default_value;

	bool (is_valid)(const char );

	uint32_t flags; //!< Group of <tt>enum pcmk__opt_flags</tt>

	const char *description_short;
	const char *description_long;

	} pcmk__cluster_option_t;

	const char pcmk__cluster_option(GHashTable options, const char *name);

	int pcmk__output_cluster_options(pcmk__output_t out, const char name,
	const char desc_short, const char desc_long,
	uint32_t filter, bool all);
	int pcmk__output_fencing_params(pcmk__output_t out, const char name,
	const char desc_short, const char desc_long,
	bool all);
	int pcmk__output_primitive_meta(pcmk__output_t out, const char name,
	const char desc_short, const char desc_long,
	bool all);

	int pcmk__daemon_metadata(pcmk__output_t out, const char name,
	const char short_desc, const char long_desc,
	enum pcmk__opt_flags filter);

	void pcmk__validate_cluster_options(GHashTable *options);

	bool pcmk__valid_interval_spec(const char *value);
	bool pcmk__valid_boolean(const char *value);
	bool pcmk__valid_int(const char *value);
	bool pcmk__valid_positive_int(const char *value);
	bool pcmk__valid_no_quorum_policy(const char *value);
	bool pcmk__valid_percentage(const char *value);
	bool pcmk__valid_placement_strategy(const char *value);

	// from watchdog.c
	long pcmk__get_sbd_watchdog_timeout(void);
	bool pcmk__get_sbd_sync_resource_startup(void);
	long pcmk__auto_stonith_watchdog_timeout(void);
	bool pcmk__valid_stonith_watchdog_timeout(const char *value);

	// Constants for environment variable names
	#define PCMK__ENV_AUTHKEY_LOCATION "authkey_location"
	#define PCMK__ENV_BLACKBOX "blackbox"
	#define PCMK__ENV_CALLGRIND_ENABLED "callgrind_enabled"
	#define PCMK__ENV_CLUSTER_TYPE "cluster_type"
	#define PCMK__ENV_DEBUG "debug"
	#define PCMK__ENV_DH_MAX_BITS "dh_max_bits"
	#define PCMK__ENV_FAIL_FAST "fail_fast"
	#define PCMK__ENV_IPC_BUFFER "ipc_buffer"
	#define PCMK__ENV_IPC_TYPE "ipc_type"
	#define PCMK__ENV_LOGFACILITY "logfacility"
	#define PCMK__ENV_LOGFILE "logfile"
	#define PCMK__ENV_LOGFILE_MODE "logfile_mode"
	#define PCMK__ENV_LOGPRIORITY "logpriority"
	#define PCMK__ENV_NODE_ACTION_LIMIT "node_action_limit"
	#define PCMK__ENV_NODE_START_STATE "node_start_state"
	#define PCMK__ENV_PANIC_ACTION "panic_action"
	#define PCMK__ENV_REMOTE_ADDRESS "remote_address"
	#define PCMK__ENV_REMOTE_SCHEMA_DIRECTORY "remote_schema_directory"
	#define PCMK__ENV_REMOTE_PID1 "remote_pid1"
	#define PCMK__ENV_REMOTE_PORT "remote_port"
	#define PCMK__ENV_RESPAWNED "respawned"
	#define PCMK__ENV_SCHEMA_DIRECTORY "schema_directory"
	#define PCMK__ENV_SERVICE "service"
	#define PCMK__ENV_STDERR "stderr"
	#define PCMK__ENV_TLS_PRIORITIES "tls_priorities"
	#define PCMK__ENV_TRACE_BLACKBOX "trace_blackbox"
	#define PCMK__ENV_TRACE_FILES "trace_files"
	#define PCMK__ENV_TRACE_FORMATS "trace_formats"
	#define PCMK__ENV_TRACE_FUNCTIONS "trace_functions"
	#define PCMK__ENV_TRACE_TAGS "trace_tags"
	#define PCMK__ENV_VALGRIND_ENABLED "valgrind_enabled"

	// Constants for meta-attribute names
	#define PCMK__META_CLONE "clone"
	#define PCMK__META_CONTAINER "container"
	#define PCMK__META_DIGESTS_ALL "digests-all"
	#define PCMK__META_DIGESTS_SECURE "digests-secure"
	#define PCMK__META_INTERNAL_RSC "internal_rsc"
	#define PCMK__META_MIGRATE_SOURCE "migrate_source"
	#define PCMK__META_MIGRATE_TARGET "migrate_target"
	#define PCMK__META_ON_NODE "on_node"
	#define PCMK__META_ON_NODE_UUID "on_node_uuid"
	#define PCMK__META_OP_NO_WAIT "op_no_wait"
	#define PCMK__META_OP_TARGET_RC "op_target_rc"
	#define PCMK__META_PHYSICAL_HOST "physical-host"
	#define PCMK__META_STONITH_ACTION "stonith_action"

	/* @TODO Plug these in. Currently, they're never set. These are op attrs for use
	* with https://projects.clusterlabs.org/T382.
	*/
	#define PCMK__META_CLEAR_FAILURE_OP "clear_failure_op"
	#define PCMK__META_CLEAR_FAILURE_INTERVAL "clear_failure_interval"

	-// @COMPAT Deprecated meta-attribute since 2.1.0
	-#define PCMK__META_CAN_FAIL "can_fail"
	-
	// @COMPAT Deprecated alias for PCMK__META_PROMOTED_MAX since 2.0.0
	#define PCMK__META_PROMOTED_MAX_LEGACY "master-max"

	// @COMPAT Deprecated alias for PCMK__META_PROMOTED_NODE_MAX since 2.0.0
	#define PCMK__META_PROMOTED_NODE_MAX_LEGACY "master-node-max"

	// @COMPAT Deprecated meta-attribute since 2.0.0
	#define PCMK__META_ROLE_AFTER_FAILURE "role_after_failure"

	// Constants for enumerated values
	#define PCMK__VALUE_ATTRD "attrd"
	#define PCMK__VALUE_BOLD "bold"
	#define PCMK__VALUE_BROADCAST "broadcast"
	#define PCMK__VALUE_CIB "cib"
	#define PCMK__VALUE_CIB_DIFF_NOTIFY "cib_diff_notify"
	#define PCMK__VALUE_CIB_NOTIFY "cib_notify"
	#define PCMK__VALUE_CIB_POST_NOTIFY "cib_post_notify"
	#define PCMK__VALUE_CIB_PRE_NOTIFY "cib_pre_notify"
	#define PCMK__VALUE_CIB_UPDATE_CONFIRMATION "cib_update_confirmation"
	#define PCMK__VALUE_CLUSTER "cluster"
	#define PCMK__VALUE_CRMD "crmd"
	#define PCMK__VALUE_EN "en"
	#define PCMK__VALUE_EPOCH "epoch"
	#define PCMK__VALUE_HEALTH_RED "health_red"
	#define PCMK__VALUE_HEALTH_YELLOW "health_yellow"
	#define PCMK__VALUE_INIT "init"
	#define PCMK__VALUE_LOCAL "local"
	#define PCMK__VALUE_LOST "lost"
	#define PCMK__VALUE_LRMD "lrmd"
	#define PCMK__VALUE_MAINT "maint"
	#define PCMK__VALUE_OUTPUT "output"
	#define PCMK__VALUE_PASSWORD "password"
	#define PCMK__VALUE_PRIMITIVE "primitive"
	#define PCMK__VALUE_REFRESH "refresh"
	#define PCMK__VALUE_REQUEST "request"
	#define PCMK__VALUE_RESPONSE "response"
	#define PCMK__VALUE_RSC_FAILED "rsc-failed"
	#define PCMK__VALUE_RSC_FAILURE_IGNORED "rsc-failure-ignored"
	#define PCMK__VALUE_RSC_MANAGED "rsc-managed"
	#define PCMK__VALUE_RSC_MULTIPLE "rsc-multiple"
	#define PCMK__VALUE_RSC_OK "rsc-ok"
	#define PCMK__VALUE_RUNNING "running"
	#define PCMK__VALUE_SCHEDULER "scheduler"
	#define PCMK__VALUE_SHUTDOWN_COMPLETE "shutdown_complete"
	#define PCMK__VALUE_SHUTTING_DOWN "shutting_down"
	#define PCMK__VALUE_ST_ASYNC_TIMEOUT_VALUE "st-async-timeout-value"
	#define PCMK__VALUE_ST_NOTIFY "st_notify"
	#define PCMK__VALUE_ST_NOTIFY_DISCONNECT "st_notify_disconnect"
	#define PCMK__VALUE_ST_NOTIFY_FENCE "st_notify_fence"
	#define PCMK__VALUE_ST_NOTIFY_HISTORY "st_notify_history"
	#define PCMK__VALUE_ST_NOTIFY_HISTORY_SYNCED "st_notify_history_synced"
	#define PCMK__VALUE_STARTING_DAEMONS "starting_daemons"
	#define PCMK__VALUE_STONITH_NG "stonith-ng"
	#define PCMK__VALUE_WAIT_FOR_PING "wait_for_ping"
	#define PCMK__VALUE_WARNING "warning"

	/* @COMPAT Deprecated since 2.1.7 (used with PCMK__XA_ORDERING attribute of
	* resource sets)
	*/
	#define PCMK__VALUE_GROUP "group"

	// @COMPAT Drop when daemon metadata commands are dropped
	#define PCMK__VALUE_TIME "time"

	#ifdef __cplusplus
	}
	#endif

	#endif // PCMK__OPTIONS_INTERNAL__H
	diff --git a/include/pcmki/pcmki_transition.h b/include/pcmki/pcmki_transition.h
	index d10fe83393..d66d7e43ce 100644
	--- a/include/pcmki/pcmki_transition.h
	+++ b/include/pcmki/pcmki_transition.h
	@@ -1,184 +1,181 @@
	/*
	* Copyright 2004-2024 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.
	*/

	#ifndef PCMK__PCMKI_PCMKI_TRANSITION__H
	#define PCMK__PCMKI_PCMKI_TRANSITION__H

	#include <stdbool.h> // bool
	#include <stdint.h> // uint32_t
	#include <sys/types.h> // time_t
	#include <glib.h> // guint, GList, GHashTable
	#include <libxml/tree.h> // xmlNode

	#include <crm/common/scheduler_types.h> // pcmk_scheduler_t
	#include <crm/lrmd_events.h> // lrmd_event_data_t

	#ifdef __cplusplus
	extern "C" {
	#endif

	enum pcmk__graph_action_type {
	pcmk__pseudo_graph_action,
	pcmk__rsc_graph_action,
	pcmk__cluster_graph_action,
	};

	enum pcmk__synapse_flags {
	pcmk__synapse_ready = (1 << 0),
	pcmk__synapse_failed = (1 << 1),
	pcmk__synapse_executed = (1 << 2),
	pcmk__synapse_confirmed = (1 << 3),
	};

	typedef struct {
	int id;
	int priority;

	uint32_t flags; // Group of pcmk__synapse_flags

	GList actions; / pcmk__graph_action_t* */
	GList inputs; / pcmk__graph_action_t* */
	} pcmk__graph_synapse_t;

	#define pcmk__set_synapse_flags(synapse, flags_to_set) do { \
	(synapse)->flags = pcmk__set_flags_as(__func__, __LINE__, \
	LOG_TRACE, \
	"Synapse", "synapse", \
	(synapse)->flags, (flags_to_set), #flags_to_set); \
	} while (0)

	#define pcmk__clear_synapse_flags(synapse, flags_to_clear) do { \
	(synapse)->flags = pcmk__clear_flags_as(__func__, __LINE__, \
	LOG_TRACE, \
	"Synapse", "synapse", \
	(synapse)->flags, (flags_to_clear), #flags_to_clear); \
	} while (0)

	enum pcmk__graph_action_flags {
	pcmk__graph_action_sent_update = (1 << 0), /* sent to the CIB */
	pcmk__graph_action_executed = (1 << 1), /* sent to the CRM */
	pcmk__graph_action_confirmed = (1 << 2),
	pcmk__graph_action_failed = (1 << 3),
	-
	- //! \deprecated Will be removed in a future release
	- pcmk__graph_action_can_fail = (1 << 4),
	};

	typedef struct {
	int id;
	int timeout;
	int timer;
	guint interval_ms;
	GHashTable *params;
	enum pcmk__graph_action_type type;
	pcmk__graph_synapse_t *synapse;

	uint32_t flags; // Group of pcmk__graph_action_flags

	xmlNode *xml;

	} pcmk__graph_action_t;

	#define pcmk__set_graph_action_flags(action, flags_to_set) do { \
	(action)->flags = pcmk__set_flags_as(__func__, __LINE__, \
	LOG_TRACE, \
	"Action", "action", \
	(action)->flags, (flags_to_set), #flags_to_set); \
	} while (0)

	#define pcmk__clear_graph_action_flags(action, flags_to_clear) do { \
	(action)->flags = pcmk__clear_flags_as(__func__, __LINE__, \
	LOG_TRACE, \
	"Action", "action", \
	(action)->flags, (flags_to_clear), #flags_to_clear); \
	} while (0)

	// What to do after finished processing a transition graph
	enum pcmk__graph_next {
	// Order matters: lowest priority to highest
	pcmk__graph_done, // Transition complete, nothing further needed
	pcmk__graph_wait, // Transition interrupted, wait for further changes
	pcmk__graph_restart, // Transition interrupted, start a new one
	pcmk__graph_shutdown, // Transition interrupted, local shutdown needed
	};

	typedef struct {
	int id;
	char *source;
	int abort_priority;

	bool complete;
	const char *abort_reason;
	enum pcmk__graph_next completion_action;

	int num_actions;
	int num_synapses;

	int batch_limit;
	guint network_delay;
	guint stonith_timeout;

	int fired;
	int pending;
	int skipped;
	int completed;
	int incomplete;

	GList synapses; / pcmk__graph_synapse_t* */

	int migration_limit;

	//! Failcount after one failed stop action
	char *failed_stop_offset;

	//! Failcount after one failed start action
	char *failed_start_offset;

	//! Time (from epoch) by which the controller should re-run the scheduler
	time_t recheck_by;
	} pcmk__graph_t;


	typedef struct {
	int (pseudo) (pcmk__graph_t graph, pcmk__graph_action_t *action);
	int (rsc) (pcmk__graph_t graph, pcmk__graph_action_t *action);
	int (cluster) (pcmk__graph_t graph, pcmk__graph_action_t *action);
	int (fence) (pcmk__graph_t graph, pcmk__graph_action_t *action);
	bool (allowed) (pcmk__graph_t graph, pcmk__graph_action_t *action);
	} pcmk__graph_functions_t;

	enum pcmk__graph_status {
	pcmk__graph_active, // Some actions have been performed
	pcmk__graph_pending, // No actions performed yet
	pcmk__graph_complete,
	pcmk__graph_terminated,
	};

	void pcmk__set_graph_functions(pcmk__graph_functions_t *fns);
	pcmk__graph_t pcmk__unpack_graph(const xmlNode xml_graph,
	const char *reference);
	enum pcmk__graph_status pcmk__execute_graph(pcmk__graph_t *graph);
	void pcmk__update_graph(pcmk__graph_t *graph,
	const pcmk__graph_action_t *action);
	void pcmk__free_graph(pcmk__graph_t *graph);
	const char *pcmk__graph_status2text(enum pcmk__graph_status state);
	void pcmk__log_graph(unsigned int log_level, pcmk__graph_t *graph);
	void pcmk__log_graph_action(int log_level, pcmk__graph_action_t *action);
	void pcmk__log_transition_summary(const pcmk_scheduler_t *scheduler,
	const char *filename);
	lrmd_event_data_t pcmk__event_from_graph_action(const xmlNode resource,
	const pcmk__graph_action_t *action,
	int status, int rc,
	const char *exit_reason);

	#ifdef __cplusplus
	}
	#endif

	#endif // PCMK__PCMKI_PCMKI_TRANSITION__H
	diff --git a/lib/pacemaker/pcmk_graph_consumer.c b/lib/pacemaker/pcmk_graph_consumer.c
	index 851d73b829..9cd0897213 100644
	--- a/lib/pacemaker/pcmk_graph_consumer.c
	+++ b/lib/pacemaker/pcmk_graph_consumer.c
	@@ -1,884 +1,865 @@
	/*
	* Copyright 2004-2024 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 <sys/param.h>
	#include <sys/stat.h>

	#include <crm/crm.h>
	#include <crm/common/xml.h>
	#include <crm/common/xml_internal.h>
	#include <crm/lrmd_internal.h>
	#include <pacemaker-internal.h>


	/*
	* Functions for freeing transition graph objects
	*/

	/*!
	* \internal
	* \brief Free a transition graph action object
	*
	* \param[in,out] user_data Action to free
	*/
	static void
	free_graph_action(gpointer user_data)
	{
	pcmk__graph_action_t *action = user_data;

	if (action->timer != 0) {
	crm_warn("Cancelling timer for graph action %d", action->id);
	g_source_remove(action->timer);
	}
	if (action->params != NULL) {
	g_hash_table_destroy(action->params);
	}
	pcmk__xml_free(action->xml);
	free(action);
	}

	/*!
	* \internal
	* \brief Free a transition graph synapse object
	*
	* \param[in,out] user_data Synapse to free
	*/
	static void
	free_graph_synapse(gpointer user_data)
	{
	pcmk__graph_synapse_t *synapse = user_data;

	g_list_free_full(synapse->actions, free_graph_action);
	g_list_free_full(synapse->inputs, free_graph_action);
	free(synapse);
	}

	/*!
	* \internal
	* \brief Free a transition graph object
	*
	* \param[in,out] graph Transition graph to free
	*/
	void
	pcmk__free_graph(pcmk__graph_t *graph)
	{
	if (graph != NULL) {
	g_list_free_full(graph->synapses, free_graph_synapse);
	free(graph->source);
	free(graph->failed_stop_offset);
	free(graph->failed_start_offset);
	free(graph);
	}
	}


	/*
	* Functions for updating graph
	*/

	/*!
	* \internal
	* \brief Update synapse after completed prerequisite
	*
	* A synapse is ready to be executed once all its prerequisite actions (inputs)
	* complete. Given a completed action, check whether it is an input for a given
	* synapse, and if so, mark the input as confirmed, and mark the synapse as
	* ready if appropriate.
	*
	* \param[in,out] synapse Transition graph synapse to update
	* \param[in] action_id ID of an action that completed
	*
	* \note The only substantial effect here is confirming synapse inputs.
	* should_fire_synapse() will recalculate pcmk__synapse_ready, so the only
	* thing that uses the pcmk__synapse_ready from here is
	* synapse_state_str().
	*/
	static void
	update_synapse_ready(pcmk__graph_synapse_t *synapse, int action_id)
	{
	if (pcmk_is_set(synapse->flags, pcmk__synapse_ready)) {
	return; // All inputs have already been confirmed
	}

	// Presume ready until proven otherwise
	pcmk__set_synapse_flags(synapse, pcmk__synapse_ready);

	for (GList *lpc = synapse->inputs; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_action_t prereq = (pcmk__graph_action_t ) lpc->data;

	if (prereq->id == action_id) {
	crm_trace("Confirming input %d of synapse %d",
	action_id, synapse->id);
	pcmk__set_graph_action_flags(prereq, pcmk__graph_action_confirmed);

	} else if (!pcmk_is_set(prereq->flags, pcmk__graph_action_confirmed)) {
	pcmk__clear_synapse_flags(synapse, pcmk__synapse_ready);
	crm_trace("Synapse %d still not ready after action %d",
	synapse->id, action_id);
	}
	}
	if (pcmk_is_set(synapse->flags, pcmk__synapse_ready)) {
	crm_trace("Synapse %d is now ready to execute", synapse->id);
	}
	}

	/*!
	* \internal
	* \brief Update action and synapse confirmation after action completion
	*
	* \param[in,out] synapse Transition graph synapse that action belongs to
	* \param[in] action_id ID of action that completed
	*/
	static void
	update_synapse_confirmed(pcmk__graph_synapse_t *synapse, int action_id)
	{
	bool all_confirmed = true;

	for (GList *lpc = synapse->actions; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_action_t action = (pcmk__graph_action_t ) lpc->data;

	if (action->id == action_id) {
	crm_trace("Confirmed action %d of synapse %d",
	action_id, synapse->id);
	pcmk__set_graph_action_flags(action, pcmk__graph_action_confirmed);

	} else if (all_confirmed &&
	!pcmk_is_set(action->flags, pcmk__graph_action_confirmed)) {
	all_confirmed = false;
	crm_trace("Synapse %d still not confirmed after action %d",
	synapse->id, action_id);
	}
	}

	if (all_confirmed
	&& !pcmk_is_set(synapse->flags, pcmk__synapse_confirmed)) {
	crm_trace("Confirmed synapse %d", synapse->id);
	pcmk__set_synapse_flags(synapse, pcmk__synapse_confirmed);
	}
	}

	/*!
	* \internal
	* \brief Update the transition graph with a completed action result
	*
	* \param[in,out] graph Transition graph to update
	* \param[in] action Action that completed
	*/
	void
	pcmk__update_graph(pcmk__graph_t graph, const pcmk__graph_action_t action)
	{
	for (GList *lpc = graph->synapses; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_synapse_t synapse = (pcmk__graph_synapse_t ) lpc->data;

	if (pcmk_any_flags_set(synapse->flags,
	pcmk__synapse_confirmed\|pcmk__synapse_failed)) {
	continue; // This synapse already completed

	} else if (pcmk_is_set(synapse->flags, pcmk__synapse_executed)) {
	update_synapse_confirmed(synapse, action->id);

	} else if (!pcmk_is_set(action->flags, pcmk__graph_action_failed)
	\|\| (synapse->priority == PCMK_SCORE_INFINITY)) {
	update_synapse_ready(synapse, action->id);
	}
	}
	}


	/*
	* Functions for executing graph
	*/

	/* A transition graph consists of various types of actions. The library caller
	* registers execution functions for each action type, which will be stored
	* here.
	*/
	static pcmk__graph_functions_t *graph_fns = NULL;

	/*!
	* \internal
	* \brief Set transition graph execution functions
	*
	* \param[in] Execution functions to use
	*/
	void
	pcmk__set_graph_functions(pcmk__graph_functions_t *fns)
	{

	pcmk__assert((fns != NULL) && (fns->rsc != NULL) && (fns->cluster != NULL)
	&& (fns->pseudo != NULL) && (fns->fence != NULL));
	crm_debug("Setting custom functions for executing transition graphs");
	graph_fns = fns;
	}

	/*!
	* \internal
	* \brief Check whether a graph synapse is ready to be executed
	*
	* \param[in,out] graph Transition graph that synapse is part of
	* \param[in,out] synapse Synapse to check
	*
	* \return true if synapse is ready, false otherwise
	*/
	static bool
	should_fire_synapse(pcmk__graph_t graph, pcmk__graph_synapse_t synapse)
	{
	GList *lpc = NULL;

	pcmk__set_synapse_flags(synapse, pcmk__synapse_ready);
	for (lpc = synapse->inputs; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_action_t prereq = (pcmk__graph_action_t ) lpc->data;

	if (!(pcmk_is_set(prereq->flags, pcmk__graph_action_confirmed))) {
	crm_trace("Input %d for synapse %d not yet confirmed",
	prereq->id, synapse->id);
	pcmk__clear_synapse_flags(synapse, pcmk__synapse_ready);
	break;

	- } else if (pcmk_is_set(prereq->flags, pcmk__graph_action_failed)
	- && !pcmk_is_set(prereq->flags,
	- pcmk__graph_action_can_fail)) {
	+ } else if (pcmk_is_set(prereq->flags, pcmk__graph_action_failed)) {
	crm_trace("Input %d for synapse %d confirmed but failed",
	prereq->id, synapse->id);
	pcmk__clear_synapse_flags(synapse, pcmk__synapse_ready);
	break;
	}
	}
	if (pcmk_is_set(synapse->flags, pcmk__synapse_ready)) {
	crm_trace("Synapse %d is ready to execute", synapse->id);
	} else {
	return false;
	}

	for (lpc = synapse->actions; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_action_t a = (pcmk__graph_action_t ) lpc->data;

	if (a->type == pcmk__pseudo_graph_action) {
	/* None of the below applies to pseudo ops */

	} else if (synapse->priority < graph->abort_priority) {
	crm_trace("Skipping synapse %d: priority %d is less than "
	"abort priority %d",
	synapse->id, synapse->priority, graph->abort_priority);
	graph->skipped++;
	return false;

	} else if (graph_fns->allowed && !(graph_fns->allowed(graph, a))) {
	crm_trace("Deferring synapse %d: not allowed", synapse->id);
	return false;
	}
	}

	return true;
	}

	/*!
	* \internal
	* \brief Initiate an action from a transition graph
	*
	* \param[in,out] graph Transition graph containing action
	* \param[in,out] action Action to execute
	*
	* \return Standard Pacemaker return code
	*/
	static int
	initiate_action(pcmk__graph_t graph, pcmk__graph_action_t action)
	{
	const char *id = pcmk__xe_id(action->xml);

	CRM_CHECK(id != NULL, return EINVAL);
	CRM_CHECK(!pcmk_is_set(action->flags, pcmk__graph_action_executed),
	return pcmk_rc_already);

	pcmk__set_graph_action_flags(action, pcmk__graph_action_executed);
	switch (action->type) {
	case pcmk__pseudo_graph_action:
	crm_trace("Executing pseudo-action %d (%s)", action->id, id);
	return graph_fns->pseudo(graph, action);

	case pcmk__rsc_graph_action:
	crm_trace("Executing resource action %d (%s)", action->id, id);
	return graph_fns->rsc(graph, action);

	case pcmk__cluster_graph_action:
	if (pcmk__str_eq(crm_element_value(action->xml, PCMK_XA_OPERATION),
	PCMK_ACTION_STONITH, pcmk__str_none)) {
	crm_trace("Executing fencing action %d (%s)",
	action->id, id);
	return graph_fns->fence(graph, action);
	}
	crm_trace("Executing cluster action %d (%s)", action->id, id);
	return graph_fns->cluster(graph, action);

	default:
	crm_err("Unsupported graph action type <%s " PCMK_XA_ID "='%s'> "
	"(bug?)",
	action->xml->name, id);
	return EINVAL;
	}
	}

	/*!
	* \internal
	* \brief Execute a graph synapse
	*
	* \param[in,out] graph Transition graph with synapse to execute
	* \param[in,out] synapse Synapse to execute
	*
	* \return Standard Pacemaker return value
	*/
	static int
	fire_synapse(pcmk__graph_t graph, pcmk__graph_synapse_t synapse)
	{
	pcmk__set_synapse_flags(synapse, pcmk__synapse_executed);
	for (GList *lpc = synapse->actions; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_action_t action = (pcmk__graph_action_t ) lpc->data;
	int rc = initiate_action(graph, action);

	if (rc != pcmk_rc_ok) {
	crm_err("Failed initiating <%s " PCMK_XA_ID "=%d> in synapse %d: "
	"%s",
	action->xml->name, action->id, synapse->id,
	pcmk_rc_str(rc));
	pcmk__set_synapse_flags(synapse, pcmk__synapse_confirmed);
	pcmk__set_graph_action_flags(action,
	pcmk__graph_action_confirmed
	\|pcmk__graph_action_failed);
	return pcmk_rc_error;
	}
	}
	return pcmk_rc_ok;
	}

	/*!
	* \internal
	* \brief Dummy graph method that can be used with simulations
	*
	* \param[in,out] graph Transition graph containing action
	* \param[in,out] action Graph action to be initiated
	*
	* \return Standard Pacemaker return code
	* \note If the PE_fail environment variable is set to the action ID,
	* then the graph action will be marked as failed.
	*/
	static int
	pseudo_action_dummy(pcmk__graph_t graph, pcmk__graph_action_t action)
	{
	static int fail = -1;

	if (fail < 0) {
	long long fail_ll;

	if ((pcmk__scan_ll(getenv("PE_fail"), &fail_ll, 0LL) == pcmk_rc_ok)
	&& (fail_ll > 0LL) && (fail_ll <= INT_MAX)) {
	fail = (int) fail_ll;
	} else {
	fail = 0;
	}
	}

	if (action->id == fail) {
	crm_err("Dummy event handler: pretending action %d failed", action->id);
	pcmk__set_graph_action_flags(action, pcmk__graph_action_failed);
	graph->abort_priority = PCMK_SCORE_INFINITY;
	} else {
	crm_trace("Dummy event handler: action %d initiated", action->id);
	}
	pcmk__set_graph_action_flags(action, pcmk__graph_action_confirmed);
	pcmk__update_graph(graph, action);
	return pcmk_rc_ok;
	}

	static pcmk__graph_functions_t default_fns = {
	pseudo_action_dummy,
	pseudo_action_dummy,
	pseudo_action_dummy,
	pseudo_action_dummy
	};

	/*!
	* \internal
	* \brief Execute all actions in a transition graph
	*
	* \param[in,out] graph Transition graph to execute
	*
	* \return Status of transition after execution
	*/
	enum pcmk__graph_status
	pcmk__execute_graph(pcmk__graph_t *graph)
	{
	GList *lpc = NULL;
	int log_level = LOG_DEBUG;
	enum pcmk__graph_status pass_result = pcmk__graph_active;
	const char *status = "In progress";

	if (graph_fns == NULL) {
	graph_fns = &default_fns;
	}
	if (graph == NULL) {
	return pcmk__graph_complete;
	}

	graph->fired = 0;
	graph->pending = 0;
	graph->skipped = 0;
	graph->completed = 0;
	graph->incomplete = 0;

	// Count completed and in-flight synapses
	for (lpc = graph->synapses; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_synapse_t synapse = (pcmk__graph_synapse_t ) lpc->data;

	if (pcmk_is_set(synapse->flags, pcmk__synapse_confirmed)) {
	graph->completed++;

	} else if (!pcmk_is_set(synapse->flags, pcmk__synapse_failed)
	&& pcmk_is_set(synapse->flags, pcmk__synapse_executed)) {
	graph->pending++;
	}
	}
	crm_trace("Executing graph %d (%d synapses already completed, %d pending)",
	graph->id, graph->completed, graph->pending);

	// Execute any synapses that are ready
	for (lpc = graph->synapses; lpc != NULL; lpc = lpc->next) {
	pcmk__graph_synapse_t synapse = (pcmk__graph_synapse_t ) lpc->data;

	if ((graph->batch_limit > 0)
	&& (graph->pending >= graph->batch_limit)) {

	crm_debug("Throttling graph execution: batch limit (%d) reached",
	graph->batch_limit);
	break;

	} else if (pcmk_is_set(synapse->flags, pcmk__synapse_failed)) {
	graph->skipped++;
	continue;

	} else if (pcmk_any_flags_set(synapse->flags,
	pcmk__synapse_confirmed
	\|pcmk__synapse_executed)) {
	continue; // Already handled

	} else if (should_fire_synapse(graph, synapse)) {
	graph->fired++;
	if (fire_synapse(graph, synapse) != pcmk_rc_ok) {
	crm_err("Synapse %d failed to fire", synapse->id);
	log_level = LOG_ERR;
	graph->abort_priority = PCMK_SCORE_INFINITY;
	graph->incomplete++;
	graph->fired--;
	}

	if (!(pcmk_is_set(synapse->flags, pcmk__synapse_confirmed))) {
	graph->pending++;
	}

	} else {
	crm_trace("Synapse %d cannot fire", synapse->id);
	graph->incomplete++;
	}
	}

	if ((graph->pending == 0) && (graph->fired == 0)) {
	graph->complete = true;

	if ((graph->incomplete != 0) && (graph->abort_priority <= 0)) {
	log_level = LOG_WARNING;
	pass_result = pcmk__graph_terminated;
	status = "Terminated";

	} else if (graph->skipped != 0) {
	log_level = LOG_NOTICE;
	pass_result = pcmk__graph_complete;
	status = "Stopped";

	} else {
	log_level = LOG_NOTICE;
	pass_result = pcmk__graph_complete;
	status = "Complete";
	}

	} else if (graph->fired == 0) {
	pass_result = pcmk__graph_pending;
	}

	do_crm_log(log_level,
	"Transition %d (Complete=%d, Pending=%d,"
	" Fired=%d, Skipped=%d, Incomplete=%d, Source=%s): %s",
	graph->id, graph->completed, graph->pending, graph->fired,
	graph->skipped, graph->incomplete, graph->source, status);

	return pass_result;
	}


	/*
	* Functions for unpacking transition graph XML into structs
	*/

	/*!
	* \internal
	* \brief Unpack a transition graph action from XML
	*
	* \param[in] parent Synapse that action is part of
	* \param[in] xml_action Action XML to unparse
	*
	* \return Newly allocated action on success, or NULL otherwise
	*/
	static pcmk__graph_action_t *
	unpack_action(pcmk__graph_synapse_t parent, xmlNode xml_action)
	{
	enum pcmk__graph_action_type action_type;
	pcmk__graph_action_t *action = NULL;
	const char *value = pcmk__xe_id(xml_action);

	if (value == NULL) {
	crm_err("Ignoring transition graph action without " PCMK_XA_ID
	" (bug?)");
	crm_log_xml_trace(xml_action, "invalid");
	return NULL;
	}

	if (pcmk__xe_is(xml_action, PCMK__XE_RSC_OP)) {
	action_type = pcmk__rsc_graph_action;

	} else if (pcmk__xe_is(xml_action, PCMK__XE_PSEUDO_EVENT)) {
	action_type = pcmk__pseudo_graph_action;

	} else if (pcmk__xe_is(xml_action, PCMK__XE_CRM_EVENT)) {
	action_type = pcmk__cluster_graph_action;

	} else {
	crm_err("Ignoring transition graph action of unknown type '%s' (bug?)",
	xml_action->name);
	crm_log_xml_trace(xml_action, "invalid");
	return NULL;
	}

	action = calloc(1, sizeof(pcmk__graph_action_t));
	if (action == NULL) {
	crm_perror(LOG_CRIT, "Cannot unpack transition graph action");
	crm_log_xml_trace(xml_action, "lost");
	return NULL;
	}

	pcmk__scan_min_int(value, &(action->id), -1);
	action->type = pcmk__rsc_graph_action;
	action->xml = pcmk__xml_copy(NULL, xml_action);
	action->synapse = parent;
	action->type = action_type;
	action->params = xml2list(action->xml);

	value = crm_meta_value(action->params, PCMK_META_TIMEOUT);
	pcmk__scan_min_int(value, &(action->timeout), 0);

	/* Take PCMK_META_START_DELAY into account for the timeout of the action
	* timer
	*/
	value = crm_meta_value(action->params, PCMK_META_START_DELAY);
	{
	int start_delay;

	pcmk__scan_min_int(value, &start_delay, 0);
	action->timeout += start_delay;
	}

	if (pcmk__guint_from_hash(action->params, CRM_META "_" PCMK_META_INTERVAL,
	0, &(action->interval_ms)) != pcmk_rc_ok) {
	action->interval_ms = 0;
	}

	- value = crm_meta_value(action->params, PCMK__META_CAN_FAIL);
	- if (value != NULL) {
	- // @COMPAT Not possible with schema validation enabled
	- int can_fail = 0;
	-
	- if ((crm_str_to_boolean(value, &can_fail) > 0) && (can_fail > 0)) {
	- pcmk__set_graph_action_flags(action, pcmk__graph_action_can_fail);
	- } else {
	- pcmk__clear_graph_action_flags(action, pcmk__graph_action_can_fail);
	- }
	-
	- if (pcmk_is_set(action->flags, pcmk__graph_action_can_fail)) {
	- crm_warn("Support for the " PCMK__META_CAN_FAIL " meta-attribute "
	- "is deprecated and will be removed in a future release");
	- }
	- }
	-
	crm_trace("Action %d has timer set to %dms", action->id, action->timeout);

	return action;
	}

	/*!
	* \internal
	* \brief Unpack transition graph synapse from XML
	*
	* \param[in,out] new_graph Transition graph that synapse is part of
	* \param[in] xml_synapse Synapse XML
	*
	* \return Newly allocated synapse on success, or NULL otherwise
	*/
	static pcmk__graph_synapse_t *
	unpack_synapse(pcmk__graph_t new_graph, const xmlNode xml_synapse)
	{
	const char *value = NULL;
	xmlNode *action_set = NULL;
	pcmk__graph_synapse_t *new_synapse = NULL;

	crm_trace("Unpacking synapse %s", pcmk__xe_id(xml_synapse));

	new_synapse = calloc(1, sizeof(pcmk__graph_synapse_t));
	if (new_synapse == NULL) {
	return NULL;
	}

	pcmk__scan_min_int(pcmk__xe_id(xml_synapse), &(new_synapse->id), 0);

	value = crm_element_value(xml_synapse, PCMK__XA_PRIORITY);
	pcmk__scan_min_int(value, &(new_synapse->priority), 0);

	CRM_CHECK(new_synapse->id >= 0,
	free_graph_synapse((gpointer) new_synapse); return NULL);

	new_graph->num_synapses++;

	crm_trace("Unpacking synapse %s action sets",
	crm_element_value(xml_synapse, PCMK_XA_ID));

	for (action_set = pcmk__xe_first_child(xml_synapse, "action_set", NULL,
	NULL);
	action_set != NULL; action_set = pcmk__xe_next_same(action_set)) {

	for (xmlNode *action = pcmk__xe_first_child(action_set, NULL, NULL,
	NULL);
	action != NULL; action = pcmk__xe_next(action)) {

	pcmk__graph_action_t *new_action = unpack_action(new_synapse,
	action);

	if (new_action == NULL) {
	continue;
	}

	crm_trace("Adding action %d to synapse %d",
	new_action->id, new_synapse->id);
	new_graph->num_actions++;
	new_synapse->actions = g_list_append(new_synapse->actions,
	new_action);
	}
	}

	crm_trace("Unpacking synapse %s inputs", pcmk__xe_id(xml_synapse));

	for (xmlNode *inputs = pcmk__xe_first_child(xml_synapse, "inputs", NULL,
	NULL);
	inputs != NULL; inputs = pcmk__xe_next_same(inputs)) {

	for (xmlNode *trigger = pcmk__xe_first_child(inputs, "trigger", NULL,
	NULL);
	trigger != NULL; trigger = pcmk__xe_next_same(trigger)) {

	for (xmlNode *input = pcmk__xe_first_child(trigger, NULL, NULL,
	NULL);
	input != NULL; input = pcmk__xe_next(input)) {

	pcmk__graph_action_t *new_input = unpack_action(new_synapse,
	input);

	if (new_input == NULL) {
	continue;
	}

	crm_trace("Adding input %d to synapse %d",
	new_input->id, new_synapse->id);

	new_synapse->inputs = g_list_append(new_synapse->inputs,
	new_input);
	}
	}
	}

	return new_synapse;
	}

	/*!
	* \internal
	* \brief Unpack transition graph XML
	*
	* \param[in] xml_graph Transition graph XML to unpack
	* \param[in] reference Where the XML came from (for logging)
	*
	* \return Newly allocated transition graph on success, NULL otherwise
	* \note The caller is responsible for freeing the return value using
	* pcmk__free_graph().
	* \note The XML is expected to be structured like:
	<transition_graph ...>
	<synapse id="0">
	<action_set>
	<rsc_op id="2" ...>
	...
	</action_set>
	<inputs>
	<rsc_op id="1" ...
	...
	</inputs>
	</synapse>
	...
	</transition_graph>
	*/
	pcmk__graph_t *
	pcmk__unpack_graph(const xmlNode xml_graph, const char reference)
	{
	pcmk__graph_t *new_graph = NULL;

	new_graph = calloc(1, sizeof(pcmk__graph_t));
	if (new_graph == NULL) {
	return NULL;
	}

	new_graph->source = strdup(pcmk__s(reference, "unknown"));
	if (new_graph->source == NULL) {
	pcmk__free_graph(new_graph);
	return NULL;
	}

	new_graph->completion_action = pcmk__graph_done;

	// Parse top-level attributes from PCMK__XE_TRANSITION_GRAPH
	if (xml_graph != NULL) {
	const char *buf = crm_element_value(xml_graph, "transition_id");

	CRM_CHECK(buf != NULL,
	pcmk__free_graph(new_graph); return NULL);
	pcmk__scan_min_int(buf, &(new_graph->id), 1);

	buf = crm_element_value(xml_graph, PCMK_OPT_CLUSTER_DELAY);
	CRM_CHECK(buf != NULL,
	pcmk__free_graph(new_graph); return NULL);
	pcmk_parse_interval_spec(buf, &(new_graph->network_delay));

	buf = crm_element_value(xml_graph, PCMK_OPT_STONITH_TIMEOUT);
	if (buf == NULL) {
	new_graph->stonith_timeout = new_graph->network_delay;
	} else {
	pcmk_parse_interval_spec(buf, &(new_graph->stonith_timeout));
	}

	// Use 0 (dynamic limit) as default/invalid, -1 (no limit) as minimum
	buf = crm_element_value(xml_graph, PCMK_OPT_BATCH_LIMIT);
	if ((buf == NULL)
	\|\| (pcmk__scan_min_int(buf, &(new_graph->batch_limit),
	-1) != pcmk_rc_ok)) {
	new_graph->batch_limit = 0;
	}

	buf = crm_element_value(xml_graph, PCMK_OPT_MIGRATION_LIMIT);
	pcmk__scan_min_int(buf, &(new_graph->migration_limit), -1);

	new_graph->failed_stop_offset =
	crm_element_value_copy(xml_graph, "failed-stop-offset");
	new_graph->failed_start_offset =
	crm_element_value_copy(xml_graph, "failed-start-offset");

	if (crm_element_value_epoch(xml_graph, "recheck-by",
	&(new_graph->recheck_by)) != pcmk_ok) {
	new_graph->recheck_by = 0;
	}
	}

	// Unpack each child <synapse> element
	for (const xmlNode *synapse_xml = pcmk__xe_first_child(xml_graph,
	"synapse", NULL,
	NULL);
	synapse_xml != NULL; synapse_xml = pcmk__xe_next_same(synapse_xml)) {

	pcmk__graph_synapse_t *new_synapse = unpack_synapse(new_graph,
	synapse_xml);

	if (new_synapse != NULL) {
	new_graph->synapses = g_list_append(new_graph->synapses,
	new_synapse);
	}
	}

	crm_debug("Unpacked transition %d from %s: %d actions in %d synapses",
	new_graph->id, new_graph->source, new_graph->num_actions,
	new_graph->num_synapses);

	return new_graph;
	}


	/*
	* Other transition graph utilities
	*/

	/*!
	* \internal
	* \brief Synthesize an executor event from a graph action
	*
	* \param[in] resource If not NULL, use greater call ID than in this XML
	* \param[in] action Graph action
	* \param[in] status What to use as event execution status
	* \param[in] rc What to use as event exit status
	* \param[in] exit_reason What to use as event exit reason
	*
	* \return Newly allocated executor event on success, or NULL otherwise
	*/
	lrmd_event_data_t *
	pcmk__event_from_graph_action(const xmlNode *resource,
	const pcmk__graph_action_t *action,
	int status, int rc, const char *exit_reason)
	{
	lrmd_event_data_t *op = NULL;
	GHashTableIter iter;
	const char *name = NULL;
	const char *value = NULL;
	xmlNode *action_resource = NULL;

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

	action_resource = pcmk__xe_first_child(action->xml, PCMK_XE_PRIMITIVE, NULL,
	NULL);
	CRM_CHECK(action_resource != NULL, crm_log_xml_warn(action->xml, "invalid");
	return NULL);

	op = lrmd_new_event(pcmk__xe_id(action_resource),
	crm_element_value(action->xml, PCMK_XA_OPERATION),
	action->interval_ms);
	lrmd__set_result(op, rc, status, exit_reason);
	op->t_run = time(NULL);
	op->t_rcchange = op->t_run;
	op->params = pcmk__strkey_table(free, free);

	g_hash_table_iter_init(&iter, action->params);
	while (g_hash_table_iter_next(&iter, (void )&name, (void )&value)) {
	pcmk__insert_dup(op->params, name, value);
	}

	for (xmlNode *xop = pcmk__xe_first_child(resource, NULL, NULL, NULL);
	xop != NULL; xop = pcmk__xe_next(xop)) {

	int tmp = 0;

	crm_element_value_int(xop, PCMK__XA_CALL_ID, &tmp);
	crm_debug("Got call_id=%d for %s", tmp, pcmk__xe_id(resource));
	if (tmp > op->call_id) {
	op->call_id = tmp;
	}
	}

	op->call_id++;
	return op;
	}

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