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diff --git a/lib/pacemaker/libpacemaker_private.h b/lib/pacemaker/libpacemaker_private.h
index d83661f6df..bf1d71d01b 100644
--- a/lib/pacemaker/libpacemaker_private.h
+++ b/lib/pacemaker/libpacemaker_private.h
@@ -1,701 +1,701 @@
/*
* Copyright 2021-2022 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.
*/
#ifndef PCMK__LIBPACEMAKER_PRIVATE__H
# define PCMK__LIBPACEMAKER_PRIVATE__H
/* This header is for the sole use of libpacemaker, so that functions can be
* declared with G_GNUC_INTERNAL for efficiency.
*/
#include <crm/pengine/pe_types.h> // pe_action_t, pe_node_t, pe_working_set_t
// Flags to modify the behavior of the add_colocated_node_scores() method
enum pcmk__coloc_select {
// With no other flags, apply all "with this" colocations
pcmk__coloc_select_default = 0,
// Apply "this with" colocations instead of "with this" colocations
pcmk__coloc_select_this_with = (1 << 0),
// Apply only colocations with non-negative scores
pcmk__coloc_select_nonnegative = (1 << 1),
// Apply only colocations with at least one matching node
pcmk__coloc_select_active = (1 << 2),
};
// Flags the update_ordered_actions() method can return
enum pcmk__updated {
pcmk__updated_none = 0, // Nothing changed
pcmk__updated_first = (1 << 0), // First action was updated
pcmk__updated_then = (1 << 1), // Then action was updated
};
#define pcmk__set_updated_flags(au_flags, action, flags_to_set) do { \
au_flags = pcmk__set_flags_as(__func__, __LINE__, \
LOG_TRACE, "Action update", \
(action)->uuid, au_flags, \
(flags_to_set), #flags_to_set); \
} while (0)
#define pcmk__clear_updated_flags(au_flags, action, flags_to_clear) do { \
au_flags = pcmk__clear_flags_as(__func__, __LINE__, \
LOG_TRACE, "Action update", \
(action)->uuid, au_flags, \
(flags_to_clear), #flags_to_clear); \
} while (0)
// Resource allocation methods
struct resource_alloc_functions_s {
/*!
* \internal
* \brief Assign a resource to a node
*
* \param[in] rsc Resource to assign to a node
* \param[in] prefer Node to prefer, if all else is equal
*
* \return Node that \p rsc is assigned to, if assigned entirely to one node
*/
pe_node_t *(*assign)(pe_resource_t *rsc, pe_node_t *prefer);
void (*create_actions)(pe_resource_t *rsc);
/*!
* \internal
* \brief Schedule any probes needed for a resource on a node
*
* \param[in] rsc Resource to create probe for
* \param[in] node Node to create probe on
*
* \return true if any probe was created, otherwise false
*/
bool (*create_probe)(pe_resource_t *rsc, pe_node_t *node);
void (*internal_constraints)(pe_resource_t *rsc);
/*!
* \internal
* \brief Apply a colocation's score to node weights or resource priority
*
* Given a colocation constraint, apply its score to the dependent's
* allowed node weights (if we are still placing resources) or priority (if
* we are choosing promotable clone instance roles).
*
* \param[in] dependent Dependent resource in colocation
* \param[in] primary Primary resource in colocation
* \param[in] colocation Colocation constraint to apply
* \param[in] for_dependent true if called on behalf of dependent
*/
void (*apply_coloc_score) (pe_resource_t *dependent, pe_resource_t *primary,
pcmk__colocation_t *colocation,
bool for_dependent);
/*!
* \internal
* \brief Update nodes with scores of colocated resources' nodes
*
* Given a table of nodes and a resource, update the nodes' scores with the
* scores of the best nodes matching the attribute used for each of the
* resource's relevant colocations.
*
* \param[in,out] rsc Resource to check colocations for
* \param[in] log_id Resource ID to use in logs (if NULL, use rsc ID)
* \param[in,out] nodes Nodes to update
* \param[in] attr Colocation attribute (NULL to use default)
* \param[in] factor Incorporate scores multiplied by this factor
* \param[in] flags Bitmask of enum pcmk__coloc_select values
*
* \note The caller remains responsible for freeing \p *nodes.
*/
void (*add_colocated_node_scores)(pe_resource_t *rsc, const char *log_id,
GHashTable **nodes, const char *attr,
float factor,
enum pcmk__coloc_select flags);
/*!
* \internal
* \brief Create list of all resources in colocations with a given resource
*
* Given a resource, create a list of all resources involved in mandatory
* colocations with it, whether directly or indirectly via chained colocations.
*
* \param[in] rsc Resource to add to colocated list
* \param[in] orig_rsc Resource originally requested
* \param[in] colocated_rscs Existing list
*
* \return List of given resource and all resources involved in colocations
*
* \note This function is recursive; top-level callers should pass NULL as
* \p colocated_rscs and \p orig_rsc, and the desired resource as
* \p rsc. The recursive calls will use other values.
*/
GList *(*colocated_resources)(pe_resource_t *rsc, pe_resource_t *orig_rsc,
GList *colocated_rscs);
void (*rsc_location) (pe_resource_t *, pe__location_t *);
enum pe_action_flags (*action_flags) (pe_action_t *, pe_node_t *);
/*!
* \internal
* \brief Update two actions according to an ordering between them
*
* Given information about an ordering of two actions, update the actions'
* flags (and runnable_before members if appropriate) as appropriate for the
* ordering. In some cases, the ordering could be disabled as well.
*
* \param[in] first 'First' action in an ordering
* \param[in] then 'Then' action in an ordering
* \param[in] node If not NULL, limit scope of ordering to this node
* (only used when interleaving instances)
* \param[in] flags Action flags for \p first for ordering purposes
* \param[in] filter Action flags to limit scope of certain updates (may
* include pe_action_optional to affect only mandatory
* actions, and pe_action_runnable to affect only
* runnable actions)
* \param[in] type Group of enum pe_ordering flags to apply
* \param[in] data_set Cluster working set
*
* \return Group of enum pcmk__updated flags indicating what was updated
*/
uint32_t (*update_ordered_actions)(pe_action_t *first, pe_action_t *then,
pe_node_t *node, uint32_t flags,
uint32_t filter, uint32_t type,
pe_working_set_t *data_set);
void (*output_actions)(pe_resource_t *rsc);
/*!
* \internal
* \brief Add a resource's actions to the transition graph
*
* \param[in] rsc Resource whose actions should be added
*/
void (*add_actions_to_graph)(pe_resource_t *rsc);
void (*append_meta) (pe_resource_t * rsc, xmlNode * xml);
/*!
* \internal
* \brief Add a resource's utilization to a table of utilization values
*
* This function is used when summing the utilization of a resource and all
* resources colocated with it, to determine whether a node has sufficient
* capacity. Given a resource and a table of utilization values, it will add
* the resource's utilization to the existing values, if the resource has
* not yet been allocated to a node.
*
* \param[in] rsc Resource with utilization to add
* \param[in] orig_rsc Resource being allocated (for logging only)
* \param[in] all_rscs List of all resources that will be summed
* \param[in] utilization Table of utilization values to add to
*/
void (*add_utilization)(pe_resource_t *rsc, pe_resource_t *orig_rsc,
GList *all_rscs, GHashTable *utilization);
/*!
* \internal
* \brief Apply a shutdown lock for a resource, if appropriate
*
* \param[in] rsc Resource to check for shutdown lock
*/
void (*shutdown_lock)(pe_resource_t *rsc);
};
// Actions (pcmk_sched_actions.c)
G_GNUC_INTERNAL
void pcmk__update_action_for_orderings(pe_action_t *action,
pe_working_set_t *data_set);
G_GNUC_INTERNAL
uint32_t pcmk__update_ordered_actions(pe_action_t *first, pe_action_t *then,
pe_node_t *node, uint32_t flags,
uint32_t filter, uint32_t type,
pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__log_action(const char *pre_text, pe_action_t *action, bool details);
G_GNUC_INTERNAL
pe_action_t *pcmk__new_cancel_action(pe_resource_t *rsc, const char *name,
- guint interval_ms, pe_node_t *node);
+ guint interval_ms, const pe_node_t *node);
G_GNUC_INTERNAL
pe_action_t *pcmk__new_shutdown_action(pe_node_t *node);
G_GNUC_INTERNAL
bool pcmk__action_locks_rsc_to_node(const pe_action_t *action);
G_GNUC_INTERNAL
void pcmk__deduplicate_action_inputs(pe_action_t *action);
G_GNUC_INTERNAL
void pcmk__output_actions(pe_working_set_t *data_set);
G_GNUC_INTERNAL
bool pcmk__check_action_config(pe_resource_t *rsc, pe_node_t *node,
xmlNode *xml_op);
G_GNUC_INTERNAL
void pcmk__handle_rsc_config_changes(pe_working_set_t *data_set);
// Producing transition graphs (pcmk_graph_producer.c)
G_GNUC_INTERNAL
bool pcmk__graph_has_loop(pe_action_t *init_action, pe_action_t *action,
pe_action_wrapper_t *input);
G_GNUC_INTERNAL
void pcmk__add_rsc_actions_to_graph(pe_resource_t *rsc);
G_GNUC_INTERNAL
void pcmk__create_graph(pe_working_set_t *data_set);
// Fencing (pcmk_sched_fencing.c)
G_GNUC_INTERNAL
void pcmk__order_vs_fence(pe_action_t *stonith_op, pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__order_vs_unfence(pe_resource_t *rsc, pe_node_t *node,
pe_action_t *action, enum pe_ordering order);
G_GNUC_INTERNAL
void pcmk__fence_guest(pe_node_t *node);
G_GNUC_INTERNAL
bool pcmk__node_unfenced(pe_node_t *node);
// Injected scheduler inputs (pcmk_sched_injections.c)
void pcmk__inject_scheduler_input(pe_working_set_t *data_set, cib_t *cib,
pcmk_injections_t *injections);
// Constraints of any type (pcmk_sched_constraints.c)
G_GNUC_INTERNAL
pe_resource_t *pcmk__find_constraint_resource(GList *rsc_list, const char *id);
G_GNUC_INTERNAL
xmlNode *pcmk__expand_tags_in_sets(xmlNode *xml_obj,
pe_working_set_t *data_set);
G_GNUC_INTERNAL
bool pcmk__valid_resource_or_tag(pe_working_set_t *data_set, const char *id,
pe_resource_t **rsc, pe_tag_t **tag);
G_GNUC_INTERNAL
bool pcmk__tag_to_set(xmlNode *xml_obj, xmlNode **rsc_set, const char *attr,
bool convert_rsc, pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__create_internal_constraints(pe_working_set_t *data_set);
// Location constraints
G_GNUC_INTERNAL
void pcmk__unpack_location(xmlNode *xml_obj, pe_working_set_t *data_set);
G_GNUC_INTERNAL
pe__location_t *pcmk__new_location(const char *id, pe_resource_t *rsc,
int node_weight, const char *discover_mode,
pe_node_t *foo_node,
pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__apply_locations(pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__apply_location(pe__location_t *constraint, pe_resource_t *rsc);
// Colocation constraints (pcmk_sched_colocation.c)
enum pcmk__coloc_affects {
pcmk__coloc_affects_nothing = 0,
pcmk__coloc_affects_location,
pcmk__coloc_affects_role,
};
G_GNUC_INTERNAL
enum pcmk__coloc_affects pcmk__colocation_affects(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *constraint,
bool preview);
G_GNUC_INTERNAL
void pcmk__apply_coloc_to_weights(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *constraint);
G_GNUC_INTERNAL
void pcmk__apply_coloc_to_priority(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *constraint);
G_GNUC_INTERNAL
void pcmk__add_colocated_node_scores(pe_resource_t *rsc, const char *log_id,
GHashTable **nodes, const char *attr,
float factor, uint32_t flags);
G_GNUC_INTERNAL
void pcmk__unpack_colocation(xmlNode *xml_obj, pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__new_colocation(const char *id, const char *node_attr, int score,
pe_resource_t *dependent, pe_resource_t *primary,
const char *dependent_role, const char *primary_role,
bool influence, pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__block_colocated_starts(pe_action_t *action,
pe_working_set_t *data_set);
/*!
* \internal
* \brief Check whether colocation's dependent preferences should be considered
*
* \param[in] colocation Colocation constraint
* \param[in] rsc Primary instance (normally this will be
* colocation->primary, which NULL will be treated as,
* but for clones or bundles with multiple instances
* this can be a particular instance)
*
* \return true if colocation influence should be effective, otherwise false
*/
static inline bool
pcmk__colocation_has_influence(const pcmk__colocation_t *colocation,
const pe_resource_t *rsc)
{
if (rsc == NULL) {
rsc = colocation->primary;
}
/* A bundle replica colocates its remote connection with its container,
* using a finite score so that the container can run on Pacemaker Remote
* nodes.
*
* Moving a connection is lightweight and does not interrupt the service,
* while moving a container is heavyweight and does interrupt the service,
* so don't move a clean, active container based solely on the preferences
* of its connection.
*
* This also avoids problematic scenarios where two containers want to
* perpetually swap places.
*/
if (pcmk_is_set(colocation->dependent->flags, pe_rsc_allow_remote_remotes)
&& !pcmk_is_set(rsc->flags, pe_rsc_failed)
&& pcmk__list_of_1(rsc->running_on)) {
return false;
}
/* The dependent in a colocation influences the primary's location
* if the influence option is true or the primary is not yet active.
*/
return colocation->influence || (rsc->running_on == NULL);
}
// Ordering constraints (pcmk_sched_ordering.c)
G_GNUC_INTERNAL
void pcmk__new_ordering(pe_resource_t *first_rsc, char *first_task,
pe_action_t *first_action, pe_resource_t *then_rsc,
char *then_task, pe_action_t *then_action,
enum pe_ordering type, pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__unpack_ordering(xmlNode *xml_obj, pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__disable_invalid_orderings(pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__order_stops_before_shutdown(pe_node_t *node,
pe_action_t *shutdown_op);
G_GNUC_INTERNAL
void pcmk__apply_orderings(pe_working_set_t *data_set);
G_GNUC_INTERNAL
void pcmk__order_after_each(pe_action_t *after, GList *list);
/*!
* \internal
* \brief Create a new ordering between two resource actions
*
* \param[in] first_rsc Resource for 'first' action
* \param[in] then_rsc Resource for 'then' action
* \param[in] first_task Action key for 'first' action
* \param[in] then_task Action key for 'then' action
* \param[in] flags Bitmask of enum pe_ordering flags
* \param[in] data_set Cluster working set to add ordering to
*/
#define pcmk__order_resource_actions(first_rsc, first_task, \
then_rsc, then_task, flags) \
pcmk__new_ordering((first_rsc), \
pcmk__op_key((first_rsc)->id, (first_task), 0), \
NULL, \
(then_rsc), \
pcmk__op_key((then_rsc)->id, (then_task), 0), \
NULL, (flags), (first_rsc)->cluster)
#define pcmk__order_starts(rsc1, rsc2, type) \
pcmk__order_resource_actions((rsc1), CRMD_ACTION_START, \
(rsc2), CRMD_ACTION_START, (type))
#define pcmk__order_stops(rsc1, rsc2, type) \
pcmk__order_resource_actions((rsc1), CRMD_ACTION_STOP, \
(rsc2), CRMD_ACTION_STOP, (type))
// Ticket constraints (pcmk_sched_tickets.c)
G_GNUC_INTERNAL
void pcmk__unpack_rsc_ticket(xmlNode *xml_obj, pe_working_set_t *data_set);
// Promotable clone resources (pcmk_sched_promotable.c)
G_GNUC_INTERNAL
void pcmk__require_promotion_tickets(pe_resource_t *rsc);
G_GNUC_INTERNAL
void pcmk__set_instance_roles(pe_resource_t *rsc);
G_GNUC_INTERNAL
void pcmk__create_promotable_actions(pe_resource_t *clone);
G_GNUC_INTERNAL
void pcmk__promotable_restart_ordering(pe_resource_t *rsc);
G_GNUC_INTERNAL
void pcmk__order_promotable_instances(pe_resource_t *clone);
G_GNUC_INTERNAL
void pcmk__update_dependent_with_promotable(pe_resource_t *primary,
pe_resource_t *dependent,
pcmk__colocation_t *colocation);
G_GNUC_INTERNAL
void pcmk__update_promotable_dependent_priority(pe_resource_t *primary,
pe_resource_t *dependent,
pcmk__colocation_t *colocation);
// Pacemaker Remote nodes (pcmk_sched_remote.c)
G_GNUC_INTERNAL
bool pcmk__is_failed_remote_node(pe_node_t *node);
G_GNUC_INTERNAL
void pcmk__order_remote_connection_actions(pe_working_set_t *data_set);
G_GNUC_INTERNAL
bool pcmk__rsc_corresponds_to_guest(pe_resource_t *rsc, pe_node_t *node);
G_GNUC_INTERNAL
pe_node_t *pcmk__connection_host_for_action(pe_action_t *action);
G_GNUC_INTERNAL
void pcmk__substitute_remote_addr(pe_resource_t *rsc, GHashTable *params);
G_GNUC_INTERNAL
void pcmk__add_bundle_meta_to_xml(xmlNode *args_xml, pe_action_t *action);
// Primitives (pcmk_sched_primitive.c)
G_GNUC_INTERNAL
pe_node_t *pcmk__primitive_assign(pe_resource_t *rsc, pe_node_t *prefer);
G_GNUC_INTERNAL
void pcmk__primitive_apply_coloc_score(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *colocation,
bool for_dependent);
// Groups (pcmk_sched_group.c)
G_GNUC_INTERNAL
void pcmk__group_apply_coloc_score(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *colocation,
bool for_dependent);
G_GNUC_INTERNAL
void pcmk__group_add_colocated_node_scores(pe_resource_t *rsc,
const char *log_id,
GHashTable **nodes, const char *attr,
float factor, uint32_t flags);
G_GNUC_INTERNAL
GList *pcmk__group_colocated_resources(pe_resource_t *rsc,
pe_resource_t *orig_rsc,
GList *colocated_rscs);
// Clones (pcmk_sched_clone.c)
G_GNUC_INTERNAL
void pcmk__clone_apply_coloc_score(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *colocation,
bool for_dependent);
// Bundles (pcmk_sched_bundle.c)
G_GNUC_INTERNAL
void pcmk__bundle_apply_coloc_score(pe_resource_t *dependent,
pe_resource_t *primary,
pcmk__colocation_t *colocation,
bool for_dependent);
G_GNUC_INTERNAL
void pcmk__output_bundle_actions(pe_resource_t *rsc);
// Injections (pcmk_injections.c)
G_GNUC_INTERNAL
xmlNode *pcmk__inject_node(cib_t *cib_conn, const char *node, const char *uuid);
G_GNUC_INTERNAL
xmlNode *pcmk__inject_node_state_change(cib_t *cib_conn, const char *node,
bool up);
G_GNUC_INTERNAL
xmlNode *pcmk__inject_resource_history(pcmk__output_t *out, xmlNode *cib_node,
const char *resource,
const char *lrm_name,
const char *rclass,
const char *rtype,
const char *rprovider);
G_GNUC_INTERNAL
void pcmk__inject_failcount(pcmk__output_t *out, xmlNode *cib_node,
const char *resource, const char *task,
guint interval_ms, int rc);
G_GNUC_INTERNAL
xmlNode *pcmk__inject_action_result(xmlNode *cib_resource,
lrmd_event_data_t *op, int target_rc);
// Nodes (pcmk_sched_nodes.c)
G_GNUC_INTERNAL
bool pcmk__node_available(const pe_node_t *node, bool consider_score,
bool consider_guest);
G_GNUC_INTERNAL
bool pcmk__any_node_available(GHashTable *nodes);
G_GNUC_INTERNAL
GHashTable *pcmk__copy_node_table(GHashTable *nodes);
G_GNUC_INTERNAL
GList *pcmk__sort_nodes(GList *nodes, pe_node_t *active_node);
G_GNUC_INTERNAL
void pcmk__apply_node_health(pe_working_set_t *data_set);
G_GNUC_INTERNAL
pe_node_t *pcmk__top_allowed_node(const pe_resource_t *rsc,
const pe_node_t *node);
// Functions applying to more than one variant (pcmk_sched_resource.c)
G_GNUC_INTERNAL
void pcmk__set_allocation_methods(pe_working_set_t *data_set);
G_GNUC_INTERNAL
bool pcmk__rsc_agent_changed(pe_resource_t *rsc, pe_node_t *node,
const xmlNode *rsc_entry, bool active_on_node);
G_GNUC_INTERNAL
GList *pcmk__rscs_matching_id(const char *id, pe_working_set_t *data_set);
G_GNUC_INTERNAL
GList *pcmk__colocated_resources(pe_resource_t *rsc, pe_resource_t *orig_rsc,
GList *colocated_rscs);
G_GNUC_INTERNAL
void pcmk__output_resource_actions(pe_resource_t *rsc);
G_GNUC_INTERNAL
bool pcmk__assign_primitive(pe_resource_t *rsc, pe_node_t *chosen, bool force);
G_GNUC_INTERNAL
bool pcmk__assign_resource(pe_resource_t *rsc, pe_node_t *node, bool force);
G_GNUC_INTERNAL
void pcmk__unassign_resource(pe_resource_t *rsc);
G_GNUC_INTERNAL
bool pcmk__threshold_reached(pe_resource_t *rsc, pe_node_t *node,
pe_resource_t **failed);
G_GNUC_INTERNAL
void pcmk__sort_resources(pe_working_set_t *data_set);
G_GNUC_INTERNAL
gint pcmk__cmp_instance(gconstpointer a, gconstpointer b);
G_GNUC_INTERNAL
gint pcmk__cmp_instance_number(gconstpointer a, gconstpointer b);
// Functions related to probes (pcmk_sched_probes.c)
G_GNUC_INTERNAL
bool pcmk__probe_rsc_on_node(pe_resource_t *rsc, pe_node_t *node);
G_GNUC_INTERNAL
void pcmk__order_probes(pe_working_set_t *data_set);
G_GNUC_INTERNAL
bool pcmk__probe_resource_list(GList *rscs, pe_node_t *node);
G_GNUC_INTERNAL
void pcmk__schedule_probes(pe_working_set_t *data_set);
// Functions related to node utilization (pcmk_sched_utilization.c)
G_GNUC_INTERNAL
int pcmk__compare_node_capacities(const pe_node_t *node1,
const pe_node_t *node2);
G_GNUC_INTERNAL
void pcmk__consume_node_capacity(GHashTable *current_utilization,
pe_resource_t *rsc);
G_GNUC_INTERNAL
void pcmk__release_node_capacity(GHashTable *current_utilization,
pe_resource_t *rsc);
G_GNUC_INTERNAL
void pcmk__ban_insufficient_capacity(pe_resource_t *rsc, pe_node_t **prefer);
G_GNUC_INTERNAL
void pcmk__create_utilization_constraints(pe_resource_t *rsc,
GList *allowed_nodes);
G_GNUC_INTERNAL
void pcmk__show_node_capacities(const char *desc, pe_working_set_t *data_set);
#endif // PCMK__LIBPACEMAKER_PRIVATE__H
diff --git a/lib/pacemaker/pcmk_sched_actions.c b/lib/pacemaker/pcmk_sched_actions.c
index c05ab5613c..2548a73b73 100644
--- a/lib/pacemaker/pcmk_sched_actions.c
+++ b/lib/pacemaker/pcmk_sched_actions.c
@@ -1,2021 +1,2021 @@
/*
* 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 General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <stdio.h>
#include <sys/param.h>
#include <glib.h>
#include <crm/lrmd_internal.h>
#include <pacemaker-internal.h>
#include "libpacemaker_private.h"
extern gboolean DeleteRsc(pe_resource_t *rsc, pe_node_t *node,
gboolean optional, pe_working_set_t *data_set);
/*!
* \internal
* \brief Get the action flags relevant to ordering constraints
*
* \param[in] action Action to check
* \param[in] node Node that *other* action in the ordering is on
* (used only for clone resource actions)
*
* \return Action flags that should be used for orderings
*/
static enum pe_action_flags
action_flags_for_ordering(pe_action_t *action, pe_node_t *node)
{
bool runnable = false;
enum pe_action_flags flags;
// For non-resource actions, return the action flags
if (action->rsc == NULL) {
return action->flags;
}
/* For non-clone resources, or a clone action not assigned to a node,
* return the flags as determined by the resource method without a node
* specified.
*/
flags = action->rsc->cmds->action_flags(action, NULL);
if ((node == NULL) || !pe_rsc_is_clone(action->rsc)) {
return flags;
}
/* Otherwise (i.e., for clone resource actions on a specific node), first
* remember whether the non-node-specific action is runnable.
*/
runnable = pcmk_is_set(flags, pe_action_runnable);
// Then recheck the resource method with the node
flags = action->rsc->cmds->action_flags(action, node);
/* For clones in ordering constraints, the node-specific "runnable" doesn't
* matter, just the non-node-specific setting (i.e., is the action runnable
* anywhere).
*
* This applies only to runnable, and only for ordering constraints. This
* function shouldn't be used for other types of constraints without
* changes. Not very satisfying, but it's logical and appears to work well.
*/
if (runnable && !pcmk_is_set(flags, pe_action_runnable)) {
pe__set_raw_action_flags(flags, action->rsc->id,
pe_action_runnable);
}
return flags;
}
/*!
* \internal
* \brief Get action UUID that should be used with a resource ordering
*
* When an action is ordered relative to an action for a collective resource
* (clone, group, or bundle), it actually needs to be ordered after all
* instances of the collective have completed the relevant action (for example,
* given "start CLONE then start RSC", RSC must wait until all instances of
* CLONE have started). Given the UUID and resource of the first action in an
* ordering, this returns the UUID of the action that should actually be used
* for ordering (for example, "CLONE_started_0" instead of "CLONE_start_0").
*
* \param[in] first_uuid UUID of first action in ordering
* \param[in] first_rsc Resource of first action in ordering
*
* \return Newly allocated copy of UUID to use with ordering
* \note It is the caller's responsibility to free the return value.
*/
static char *
action_uuid_for_ordering(const char *first_uuid, pe_resource_t *first_rsc)
{
guint interval_ms = 0;
char *uuid = NULL;
char *rid = NULL;
char *first_task_str = NULL;
enum action_tasks first_task = no_action;
enum action_tasks remapped_task = no_action;
// Only non-notify actions for collective resources need remapping
if ((strstr(first_uuid, "notify") != NULL)
|| (first_rsc->variant < pe_group)) {
goto done;
}
// Only non-recurring actions need remapping
CRM_ASSERT(parse_op_key(first_uuid, &rid, &first_task_str, &interval_ms));
if (interval_ms > 0) {
goto done;
}
first_task = text2task(first_task_str);
switch (first_task) {
case stop_rsc:
case start_rsc:
case action_notify:
case action_promote:
case action_demote:
remapped_task = first_task + 1;
break;
case stopped_rsc:
case started_rsc:
case action_notified:
case action_promoted:
case action_demoted:
remapped_task = first_task;
break;
case monitor_rsc:
case shutdown_crm:
case stonith_node:
break;
default:
crm_err("Unknown action '%s' in ordering", first_task_str);
break;
}
if (remapped_task != no_action) {
/* If a (clone) resource has notifications enabled, we want to order
* relative to when all notifications have been sent for the remapped
* task. Only outermost resources or those in bundles have
* notifications.
*/
if (pcmk_is_set(first_rsc->flags, pe_rsc_notify)
&& ((first_rsc->parent == NULL)
|| (pe_rsc_is_clone(first_rsc)
&& (first_rsc->parent->variant == pe_container)))) {
uuid = pcmk__notify_key(rid, "confirmed-post",
task2text(remapped_task));
} else {
uuid = pcmk__op_key(rid, task2text(remapped_task), 0);
}
pe_rsc_trace(first_rsc,
"Remapped action UUID %s to %s for ordering purposes",
first_uuid, uuid);
}
done:
if (uuid == NULL) {
uuid = strdup(first_uuid);
CRM_ASSERT(uuid != NULL);
}
free(first_task_str);
free(rid);
return uuid;
}
/*!
* \internal
* \brief Get actual action that should be used with an ordering
*
* When an action is ordered relative to an action for a collective resource
* (clone, group, or bundle), it actually needs to be ordered after all
* instances of the collective have completed the relevant action (for example,
* given "start CLONE then start RSC", RSC must wait until all instances of
* CLONE have started). Given the first action in an ordering, this returns the
* the action that should actually be used for ordering (for example, the
* started action instead of the start action).
*
* \param[in] action First action in an ordering
*
* \return Actual action that should be used for the ordering
*/
static pe_action_t *
action_for_ordering(pe_action_t *action)
{
pe_action_t *result = action;
pe_resource_t *rsc = action->rsc;
if ((rsc != NULL) && (rsc->variant >= pe_group) && (action->uuid != NULL)) {
char *uuid = action_uuid_for_ordering(action->uuid, rsc);
result = find_first_action(rsc->actions, uuid, NULL, NULL);
if (result == NULL) {
crm_warn("Not remapping %s to %s because %s does not have "
"remapped action", action->uuid, uuid, rsc->id);
result = action;
}
free(uuid);
}
return result;
}
/*!
* \internal
* \brief Update flags for ordering's actions appropriately for ordering's flags
*
* \param[in] first First action in an ordering
* \param[in] then Then action in an ordering
* \param[in] first_flags Action flags for \p first for ordering purposes
* \param[in] then_flags Action flags for \p then for ordering purposes
* \param[in] order Action wrapper for \p first in ordering
* \param[in] data_set Cluster working set
*
* \return Group of enum pcmk__updated flags
*/
static uint32_t
update_action_for_ordering_flags(pe_action_t *first, pe_action_t *then,
enum pe_action_flags first_flags,
enum pe_action_flags then_flags,
pe_action_wrapper_t *order,
pe_working_set_t *data_set)
{
uint32_t changed = pcmk__updated_none;
/* The node will only be used for clones. If interleaved, node will be NULL,
* otherwise the ordering scope will be limited to the node. Normally, the
* whole 'then' clone should restart if 'first' is restarted, so then->node
* is needed.
*/
pe_node_t *node = then->node;
if (pcmk_is_set(order->type, pe_order_implies_then_on_node)) {
/* For unfencing, only instances of 'then' on the same node as 'first'
* (the unfencing operation) should restart, so reset node to
* first->node, at which point this case is handled like a normal
* pe_order_implies_then.
*/
pe__clear_order_flags(order->type, pe_order_implies_then_on_node);
pe__set_order_flags(order->type, pe_order_implies_then);
node = first->node;
pe_rsc_trace(then->rsc,
"%s then %s: mapped pe_order_implies_then_on_node to "
"pe_order_implies_then on %s",
first->uuid, then->uuid, node->details->uname);
}
if (pcmk_is_set(order->type, pe_order_implies_then)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags & pe_action_optional,
pe_action_optional,
pe_order_implies_then,
data_set);
} else if (!pcmk_is_set(first_flags, pe_action_optional)
&& pcmk_is_set(then->flags, pe_action_optional)) {
pe__clear_action_flags(then, pe_action_optional);
pcmk__set_updated_flags(changed, first, pcmk__updated_then);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_implies_then",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_restart) && (then->rsc != NULL)) {
enum pe_action_flags restart = pe_action_optional|pe_action_runnable;
changed |= then->rsc->cmds->update_ordered_actions(first, then, node,
first_flags, restart,
pe_order_restart,
data_set);
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_restart",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_implies_first)) {
if (first->rsc != NULL) {
changed |= first->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_optional,
pe_order_implies_first,
data_set);
} else if (!pcmk_is_set(first_flags, pe_action_optional)
&& pcmk_is_set(first->flags, pe_action_runnable)) {
pe__clear_action_flags(first, pe_action_runnable);
pcmk__set_updated_flags(changed, first, pcmk__updated_first);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_implies_first",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_promoted_implies_first)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags & pe_action_optional,
pe_action_optional,
pe_order_promoted_implies_first,
data_set);
}
pe_rsc_trace(then->rsc,
"%s then %s: %s after pe_order_promoted_implies_first",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_one_or_more)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_runnable,
pe_order_one_or_more,
data_set);
} else if (pcmk_is_set(first_flags, pe_action_runnable)) {
// We have another runnable instance of "first"
then->runnable_before++;
/* Mark "then" as runnable if it requires a certain number of
* "before" instances to be runnable, and they now are.
*/
if ((then->runnable_before >= then->required_runnable_before)
&& !pcmk_is_set(then->flags, pe_action_runnable)) {
pe__set_action_flags(then, pe_action_runnable);
pcmk__set_updated_flags(changed, first, pcmk__updated_then);
}
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_one_or_more",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_probe) && (then->rsc != NULL)) {
if (!pcmk_is_set(first_flags, pe_action_runnable)
&& (first->rsc->running_on != NULL)) {
pe_rsc_trace(then->rsc,
"%s then %s: ignoring because first is stopping",
first->uuid, then->uuid);
order->type = pe_order_none;
} else {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_runnable,
pe_order_runnable_left,
data_set);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_probe",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_runnable_left)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_runnable,
pe_order_runnable_left,
data_set);
} else if (!pcmk_is_set(first_flags, pe_action_runnable)
&& pcmk_is_set(then->flags, pe_action_runnable)) {
pe__clear_action_flags(then, pe_action_runnable);
pcmk__set_updated_flags(changed, first, pcmk__updated_then);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_runnable_left",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_implies_first_migratable)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_optional,
pe_order_implies_first_migratable,
data_set);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after "
"pe_order_implies_first_migratable",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_pseudo_left)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_optional,
pe_order_pseudo_left,
data_set);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_pseudo_left",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_optional)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_runnable,
pe_order_optional,
data_set);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_optional",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(order->type, pe_order_asymmetrical)) {
if (then->rsc != NULL) {
changed |= then->rsc->cmds->update_ordered_actions(first, then,
node,
first_flags,
pe_action_runnable,
pe_order_asymmetrical,
data_set);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after pe_order_asymmetrical",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
if (pcmk_is_set(first->flags, pe_action_runnable)
&& pcmk_is_set(order->type, pe_order_implies_then_printed)
&& !pcmk_is_set(first_flags, pe_action_optional)) {
pe_rsc_trace(then->rsc, "%s will be in graph because %s is required",
then->uuid, first->uuid);
pe__set_action_flags(then, pe_action_print_always);
// Don't bother marking 'then' as changed just for this
}
if (pcmk_is_set(order->type, pe_order_implies_first_printed)
&& !pcmk_is_set(then_flags, pe_action_optional)) {
pe_rsc_trace(then->rsc, "%s will be in graph because %s is required",
first->uuid, then->uuid);
pe__set_action_flags(first, pe_action_print_always);
// Don't bother marking 'first' as changed just for this
}
if (pcmk_any_flags_set(order->type, pe_order_implies_then
|pe_order_implies_first
|pe_order_restart)
&& (first->rsc != NULL)
&& !pcmk_is_set(first->rsc->flags, pe_rsc_managed)
&& pcmk_is_set(first->rsc->flags, pe_rsc_block)
&& !pcmk_is_set(first->flags, pe_action_runnable)
&& pcmk__str_eq(first->task, RSC_STOP, pcmk__str_casei)) {
if (pcmk_is_set(then->flags, pe_action_runnable)) {
pe__clear_action_flags(then, pe_action_runnable);
pcmk__set_updated_flags(changed, first, pcmk__updated_then);
}
pe_rsc_trace(then->rsc, "%s then %s: %s after checking whether first "
"is blocked, unmanaged, unrunnable stop",
first->uuid, then->uuid,
(changed? "changed" : "unchanged"));
}
return changed;
}
// Convenience macros for logging action properties
#define action_type_str(flags) \
(pcmk_is_set((flags), pe_action_pseudo)? "pseudo-action" : "action")
#define action_optional_str(flags) \
(pcmk_is_set((flags), pe_action_optional)? "optional" : "required")
#define action_runnable_str(flags) \
(pcmk_is_set((flags), pe_action_runnable)? "runnable" : "unrunnable")
#define action_node_str(a) \
(((a)->node == NULL)? "no node" : (a)->node->details->uname)
/*!
* \internal
* \brief Update an action's flags for all orderings where it is "then"
*
* \param[in] then Action to update
* \param[in] data_set Cluster working set
*/
void
pcmk__update_action_for_orderings(pe_action_t *then, pe_working_set_t *data_set)
{
GList *lpc = NULL;
uint32_t changed = pcmk__updated_none;
int last_flags = then->flags;
pe_rsc_trace(then->rsc, "Updating %s %s (%s %s) on %s",
action_type_str(then->flags), then->uuid,
action_optional_str(then->flags),
action_runnable_str(then->flags), action_node_str(then));
if (pcmk_is_set(then->flags, pe_action_requires_any)) {
/* Initialize current known "runnable before" actions. As
* update_action_for_ordering_flags() is called for each of then's
* before actions, this number will increment as runnable 'first'
* actions are encountered.
*/
then->runnable_before = 0;
if (then->required_runnable_before == 0) {
/* @COMPAT This ordering constraint uses the deprecated
* "require-all=false" attribute. Treat it like "clone-min=1".
*/
then->required_runnable_before = 1;
}
/* The pe_order_one_or_more clause of update_action_for_ordering_flags()
* (called below) will reset runnable if appropriate.
*/
pe__clear_action_flags(then, pe_action_runnable);
}
for (lpc = then->actions_before; lpc != NULL; lpc = lpc->next) {
pe_action_wrapper_t *other = (pe_action_wrapper_t *) lpc->data;
pe_action_t *first = other->action;
pe_node_t *then_node = then->node;
pe_node_t *first_node = first->node;
if ((first->rsc != NULL)
&& (first->rsc->variant == pe_group)
&& pcmk__str_eq(first->task, RSC_START, pcmk__str_casei)) {
first_node = first->rsc->fns->location(first->rsc, NULL, FALSE);
if (first_node != NULL) {
pe_rsc_trace(first->rsc, "Found node %s for 'first' %s",
first_node->details->uname, first->uuid);
}
}
if ((then->rsc != NULL)
&& (then->rsc->variant == pe_group)
&& pcmk__str_eq(then->task, RSC_START, pcmk__str_casei)) {
then_node = then->rsc->fns->location(then->rsc, NULL, FALSE);
if (then_node != NULL) {
pe_rsc_trace(then->rsc, "Found node %s for 'then' %s",
then_node->details->uname, then->uuid);
}
}
// Disable constraint if it only applies when on same node, but isn't
if (pcmk_is_set(other->type, pe_order_same_node)
&& (first_node != NULL) && (then_node != NULL)
&& (first_node->details != then_node->details)) {
pe_rsc_trace(then->rsc,
"Disabled ordering %s on %s then %s on %s: not same node",
other->action->uuid, first_node->details->uname,
then->uuid, then_node->details->uname);
other->type = pe_order_none;
continue;
}
pcmk__clear_updated_flags(changed, then, pcmk__updated_first);
if ((first->rsc != NULL)
&& pcmk_is_set(other->type, pe_order_then_cancels_first)
&& !pcmk_is_set(then->flags, pe_action_optional)) {
/* 'then' is required, so we must abandon 'first'
* (e.g. a required stop cancels any agent reload).
*/
pe__set_action_flags(other->action, pe_action_optional);
if (!strcmp(first->task, CRMD_ACTION_RELOAD_AGENT)) {
pe__clear_resource_flags(first->rsc, pe_rsc_reload);
}
}
if ((first->rsc != NULL) && (then->rsc != NULL)
&& (first->rsc != then->rsc) && !is_parent(then->rsc, first->rsc)) {
first = action_for_ordering(first);
}
if (first != other->action) {
pe_rsc_trace(then->rsc, "Ordering %s after %s instead of %s",
then->uuid, first->uuid, other->action->uuid);
}
pe_rsc_trace(then->rsc,
"%s (%#.6x) then %s (%#.6x): type=%#.6x node=%s",
first->uuid, first->flags, then->uuid, then->flags,
other->type, action_node_str(first));
if (first == other->action) {
/* 'first' was not remapped (e.g. from 'start' to 'running'), which
* could mean it is a non-resource action, a primitive resource
* action, or already expanded.
*/
enum pe_action_flags first_flags, then_flags;
first_flags = action_flags_for_ordering(first, then_node);
then_flags = action_flags_for_ordering(then, first_node);
changed |= update_action_for_ordering_flags(first, then,
first_flags, then_flags,
other, data_set);
/* 'first' was for a complex resource (clone, group, etc),
* create a new dependency if necessary
*/
} else if (order_actions(first, then, other->type)) {
/* This was the first time 'first' and 'then' were associated,
* start again to get the new actions_before list
*/
pcmk__set_updated_flags(changed, then, pcmk__updated_then);
pe_rsc_trace(then->rsc,
"Disabled ordering %s then %s in favor of %s then %s",
other->action->uuid, then->uuid, first->uuid,
then->uuid);
other->type = pe_order_none;
}
if (pcmk_is_set(changed, pcmk__updated_first)) {
crm_trace("Re-processing %s and its 'after' actions "
"because it changed", first->uuid);
for (GList *lpc2 = first->actions_after; lpc2 != NULL;
lpc2 = lpc2->next) {
pe_action_wrapper_t *other = (pe_action_wrapper_t *) lpc2->data;
pcmk__update_action_for_orderings(other->action, data_set);
}
pcmk__update_action_for_orderings(first, data_set);
}
}
if (pcmk_is_set(then->flags, pe_action_requires_any)) {
if (last_flags == then->flags) {
pcmk__clear_updated_flags(changed, then, pcmk__updated_then);
} else {
pcmk__set_updated_flags(changed, then, pcmk__updated_then);
}
}
if (pcmk_is_set(changed, pcmk__updated_then)) {
crm_trace("Re-processing %s and its 'after' actions because it changed",
then->uuid);
if (pcmk_is_set(last_flags, pe_action_runnable)
&& !pcmk_is_set(then->flags, pe_action_runnable)) {
pcmk__block_colocated_starts(then, data_set);
}
pcmk__update_action_for_orderings(then, data_set);
for (lpc = then->actions_after; lpc != NULL; lpc = lpc->next) {
pe_action_wrapper_t *other = (pe_action_wrapper_t *) lpc->data;
pcmk__update_action_for_orderings(other->action, data_set);
}
}
}
static inline bool
is_primitive_action(pe_action_t *action)
{
return action && action->rsc && (action->rsc->variant == pe_native);
}
/*!
* \internal
* \brief Clear a single action flag and set reason text
*
* \param[in] action Action whose flag should be cleared
* \param[in] flag Action flag that should be cleared
* \param[in] reason Action that is the reason why flag is being cleared
*/
#define clear_action_flag_because(action, flag, reason) do { \
if (pcmk_is_set((action)->flags, (flag))) { \
pe__clear_action_flags(action, flag); \
if ((action)->rsc != (reason)->rsc) { \
char *reason_text = pe__action2reason((reason), (flag)); \
pe_action_set_reason((action), reason_text, \
((flag) == pe_action_migrate_runnable)); \
free(reason_text); \
} \
} \
} while (0)
/*!
* \internal
* \brief Update actions in an asymmetric ordering
*
* \param[in] first 'First' action in an asymmetric ordering
* \param[in] then 'Then' action in an asymmetric ordering
*/
static void
handle_asymmetric_ordering(pe_action_t *first, pe_action_t *then)
{
enum rsc_role_e then_rsc_role = RSC_ROLE_UNKNOWN;
GList *then_on = NULL;
if (then->rsc == NULL) {
// Asymmetric orderings only matter if there's a resource involved
return;
}
then_rsc_role = then->rsc->fns->state(then->rsc, TRUE);
then_on = then->rsc->running_on;
if ((then_rsc_role == RSC_ROLE_STOPPED)
&& pcmk__str_eq(then->task, RSC_STOP, pcmk__str_none)) {
/* Nothing needs to be done for asymmetric ordering if 'then' is
* supposed to be stopped after 'first' but is already stopped.
*/
return;
}
if ((then_rsc_role >= RSC_ROLE_STARTED)
&& pcmk_is_set(then->flags, pe_action_optional)
&& (then->node != NULL)
&& pcmk__list_of_1(then_on)
&& (then->node->details == ((pe_node_t *) then_on->data)->details)
&& pcmk__str_eq(then->task, RSC_START, pcmk__str_none)) {
/* Nothing needs to be done for asymmetric ordering if 'then' is
* supposed to be started after 'first' but is already started --
* unless the start is mandatory, which indicates the resource is
* restarting and the ordering is still needed.
*/
return;
}
if (!pcmk_is_set(first->flags, pe_action_runnable)) {
// 'First' can't run, so 'then' can't either
clear_action_flag_because(then, pe_action_optional, first);
clear_action_flag_because(then, pe_action_runnable, first);
}
}
/*!
* \internal
* \brief Set action bits appropriately when pe_restart_order is used
*
* \param[in] first 'First' action in an ordering with pe_restart_order
* \param[in] then 'Then' action in an ordering with pe_restart_order
* \param[in] filter What action flags to care about
*
* \note pe_restart_order is set for "stop resource before starting it" and
* "stop later group member before stopping earlier group member"
*/
static void
handle_restart_ordering(pe_action_t *first, pe_action_t *then, uint32_t filter)
{
const char *reason = NULL;
CRM_ASSERT(is_primitive_action(first));
CRM_ASSERT(is_primitive_action(then));
// We need to update the action in two cases:
// ... if 'then' is required
if (pcmk_is_set(filter, pe_action_optional)
&& !pcmk_is_set(then->flags, pe_action_optional)) {
reason = "restart";
}
/* ... if 'then' is unrunnable action on same resource (if a resource
* should restart but can't start, we still want to stop)
*/
if (pcmk_is_set(filter, pe_action_runnable)
&& !pcmk_is_set(then->flags, pe_action_runnable)
&& pcmk_is_set(then->rsc->flags, pe_rsc_managed)
&& (first->rsc == then->rsc)) {
reason = "stop";
}
if (reason == NULL) {
return;
}
pe_rsc_trace(first->rsc, "Handling %s -> %s for %s",
first->uuid, then->uuid, reason);
// Make 'first' required if it is runnable
if (pcmk_is_set(first->flags, pe_action_runnable)) {
clear_action_flag_because(first, pe_action_optional, then);
}
// Make 'first' required if 'then' is required
if (!pcmk_is_set(then->flags, pe_action_optional)) {
clear_action_flag_because(first, pe_action_optional, then);
}
// Make 'first' unmigratable if 'then' is unmigratable
if (!pcmk_is_set(then->flags, pe_action_migrate_runnable)) {
clear_action_flag_because(first, pe_action_migrate_runnable, then);
}
// Make 'then' unrunnable if 'first' is required but unrunnable
if (!pcmk_is_set(first->flags, pe_action_optional)
&& !pcmk_is_set(first->flags, pe_action_runnable)) {
clear_action_flag_because(then, pe_action_runnable, first);
}
}
/*!
* \internal
* \brief Update two actions according to an ordering between them
*
* Given information about an ordering of two actions, update the actions'
* flags (and runnable_before members if appropriate) as appropriate for the
* ordering. In some cases, the ordering could be disabled as well.
*
* \param[in] first 'First' action in an ordering
* \param[in] then 'Then' action in an ordering
* \param[in] node If not NULL, limit scope of ordering to this node
* (only used when interleaving instances)
* \param[in] flags Action flags for \p first for ordering purposes
* \param[in] filter Action flags to limit scope of certain updates (may
* include pe_action_optional to affect only mandatory
* actions, and pe_action_runnable to affect only
* runnable actions)
* \param[in] type Group of enum pe_ordering flags to apply
* \param[in] data_set Cluster working set
*
* \return Group of enum pcmk__updated flags indicating what was updated
*/
uint32_t
pcmk__update_ordered_actions(pe_action_t *first, pe_action_t *then,
pe_node_t *node, uint32_t flags, uint32_t filter,
uint32_t type, pe_working_set_t *data_set)
{
uint32_t changed = pcmk__updated_none;
uint32_t then_flags = then->flags;
uint32_t first_flags = first->flags;
if (pcmk_is_set(type, pe_order_asymmetrical)) {
handle_asymmetric_ordering(first, then);
}
if (pcmk_is_set(type, pe_order_implies_first)
&& !pcmk_is_set(then_flags, pe_action_optional)) {
// Then is required, and implies first should be, too
if (pcmk_is_set(filter, pe_action_optional)
&& !pcmk_is_set(flags, pe_action_optional)
&& pcmk_is_set(first_flags, pe_action_optional)) {
clear_action_flag_because(first, pe_action_optional, then);
}
if (pcmk_is_set(flags, pe_action_migrate_runnable)
&& !pcmk_is_set(then->flags, pe_action_migrate_runnable)) {
clear_action_flag_because(first, pe_action_migrate_runnable, then);
}
}
if (pcmk_is_set(type, pe_order_promoted_implies_first)
&& (then->rsc != NULL) && (then->rsc->role == RSC_ROLE_PROMOTED)
&& pcmk_is_set(filter, pe_action_optional)
&& !pcmk_is_set(then->flags, pe_action_optional)) {
clear_action_flag_because(first, pe_action_optional, then);
if (pcmk_is_set(first->flags, pe_action_migrate_runnable)
&& !pcmk_is_set(then->flags, pe_action_migrate_runnable)) {
clear_action_flag_because(first, pe_action_migrate_runnable,
then);
}
}
if (pcmk_is_set(type, pe_order_implies_first_migratable)
&& pcmk_is_set(filter, pe_action_optional)) {
if (!pcmk_all_flags_set(then->flags,
pe_action_migrate_runnable|pe_action_runnable)) {
clear_action_flag_because(first, pe_action_runnable, then);
}
if (!pcmk_is_set(then->flags, pe_action_optional)) {
clear_action_flag_because(first, pe_action_optional, then);
}
}
if (pcmk_is_set(type, pe_order_pseudo_left)
&& pcmk_is_set(filter, pe_action_optional)
&& !pcmk_is_set(first->flags, pe_action_runnable)) {
clear_action_flag_because(then, pe_action_migrate_runnable, first);
pe__clear_action_flags(then, pe_action_pseudo);
}
if (pcmk_is_set(type, pe_order_runnable_left)
&& pcmk_is_set(filter, pe_action_runnable)
&& pcmk_is_set(then->flags, pe_action_runnable)
&& !pcmk_is_set(flags, pe_action_runnable)) {
clear_action_flag_because(then, pe_action_runnable, first);
clear_action_flag_because(then, pe_action_migrate_runnable, first);
}
if (pcmk_is_set(type, pe_order_implies_then)
&& pcmk_is_set(filter, pe_action_optional)
&& pcmk_is_set(then->flags, pe_action_optional)
&& !pcmk_is_set(flags, pe_action_optional)
&& !pcmk_is_set(first->flags, pe_action_migrate_runnable)) {
clear_action_flag_because(then, pe_action_optional, first);
}
if (pcmk_is_set(type, pe_order_restart)) {
handle_restart_ordering(first, then, filter);
}
if (then_flags != then->flags) {
pcmk__set_updated_flags(changed, first, pcmk__updated_then);
pe_rsc_trace(then->rsc,
"%s on %s: flags are now %#.6x (was %#.6x) "
"because of 'first' %s (%#.6x)",
then->uuid,
then->node? then->node->details->uname : "no node",
then->flags, then_flags, first->uuid, first->flags);
if ((then->rsc != NULL) && (then->rsc->parent != NULL)) {
// Required to handle "X_stop then X_start" for cloned groups
pcmk__update_action_for_orderings(then, data_set);
}
}
if (first_flags != first->flags) {
pcmk__set_updated_flags(changed, first, pcmk__updated_first);
pe_rsc_trace(first->rsc,
"%s on %s: flags are now %#.6x (was %#.6x) "
"because of 'then' %s (%#.6x)",
first->uuid,
first->node? first->node->details->uname : "no node",
first->flags, first_flags, then->uuid, then->flags);
}
return changed;
}
/*!
* \internal
* \brief Trace-log an action (optionally with its dependent actions)
*
* \param[in] pre_text If not NULL, prefix the log with this plus ": "
* \param[in] action Action to log
* \param[in] details If true, recursively log dependent actions
*/
void
pcmk__log_action(const char *pre_text, pe_action_t *action, bool details)
{
const char *node_uname = NULL;
const char *node_uuid = NULL;
const char *desc = NULL;
CRM_CHECK(action != NULL, return);
if (!pcmk_is_set(action->flags, pe_action_pseudo)) {
if (action->node != NULL) {
node_uname = action->node->details->uname;
node_uuid = action->node->details->id;
} else {
node_uname = "<none>";
}
}
switch (text2task(action->task)) {
case stonith_node:
case shutdown_crm:
if (pcmk_is_set(action->flags, pe_action_pseudo)) {
desc = "Pseudo ";
} else if (pcmk_is_set(action->flags, pe_action_optional)) {
desc = "Optional ";
} else if (!pcmk_is_set(action->flags, pe_action_runnable)) {
desc = "!!Non-Startable!! ";
} else if (pcmk_is_set(action->flags, pe_action_processed)) {
desc = "";
} else {
desc = "(Provisional) ";
}
crm_trace("%s%s%sAction %d: %s%s%s%s%s%s",
((pre_text == NULL)? "" : pre_text),
((pre_text == NULL)? "" : ": "),
desc, action->id, action->uuid,
(node_uname? "\ton " : ""), (node_uname? node_uname : ""),
(node_uuid? "\t\t(" : ""), (node_uuid? node_uuid : ""),
(node_uuid? ")" : ""));
break;
default:
if (pcmk_is_set(action->flags, pe_action_optional)) {
desc = "Optional ";
} else if (pcmk_is_set(action->flags, pe_action_pseudo)) {
desc = "Pseudo ";
} else if (!pcmk_is_set(action->flags, pe_action_runnable)) {
desc = "!!Non-Startable!! ";
} else if (pcmk_is_set(action->flags, pe_action_processed)) {
desc = "";
} else {
desc = "(Provisional) ";
}
crm_trace("%s%s%sAction %d: %s %s%s%s%s%s%s",
((pre_text == NULL)? "" : pre_text),
((pre_text == NULL)? "" : ": "),
desc, action->id, action->uuid,
(action->rsc? action->rsc->id : "<none>"),
(node_uname? "\ton " : ""), (node_uname? node_uname : ""),
(node_uuid? "\t\t(" : ""), (node_uuid? node_uuid : ""),
(node_uuid? ")" : ""));
break;
}
if (details) {
GList *iter = NULL;
crm_trace("\t\t====== Preceding Actions");
for (iter = action->actions_before; iter != NULL; iter = iter->next) {
pe_action_wrapper_t *other = (pe_action_wrapper_t *) iter->data;
pcmk__log_action("\t\t", other->action, false);
}
crm_trace("\t\t====== Subsequent Actions");
for (iter = action->actions_after; iter != NULL; iter = iter->next) {
pe_action_wrapper_t *other = (pe_action_wrapper_t *) iter->data;
pcmk__log_action("\t\t", other->action, false);
}
crm_trace("\t\t====== End");
} else {
crm_trace("\t\t(before=%d, after=%d)",
g_list_length(action->actions_before),
g_list_length(action->actions_after));
}
}
/*!
* \internal
* \brief Create an executor cancel action
*
* \param[in] rsc Resource of action to cancel
* \param[in] task Name of action to cancel
* \param[in] interval_ms Interval of action to cancel
* \param[in] node Node of action to cancel
* \param[in] data_set Working set of cluster
*
* \return Created op
*/
pe_action_t *
pcmk__new_cancel_action(pe_resource_t *rsc, const char *task, guint interval_ms,
- pe_node_t *node)
+ const pe_node_t *node)
{
pe_action_t *cancel_op = NULL;
char *key = NULL;
char *interval_ms_s = NULL;
CRM_ASSERT((rsc != NULL) && (task != NULL) && (node != NULL));
// @TODO dangerous if possible to schedule another action with this key
key = pcmk__op_key(rsc->id, task, interval_ms);
cancel_op = custom_action(rsc, key, RSC_CANCEL, node, FALSE, TRUE,
rsc->cluster);
pcmk__str_update(&cancel_op->task, RSC_CANCEL);
pcmk__str_update(&cancel_op->cancel_task, task);
interval_ms_s = crm_strdup_printf("%u", interval_ms);
add_hash_param(cancel_op->meta, XML_LRM_ATTR_TASK, task);
add_hash_param(cancel_op->meta, XML_LRM_ATTR_INTERVAL_MS, interval_ms_s);
free(interval_ms_s);
return cancel_op;
}
/*!
* \internal
* \brief Create a new shutdown action for a node
*
* \param[in] node Node being shut down
*
* \return Newly created shutdown action for \p node
*/
pe_action_t *
pcmk__new_shutdown_action(pe_node_t *node)
{
char *shutdown_id = NULL;
pe_action_t *shutdown_op = NULL;
CRM_ASSERT(node != NULL);
shutdown_id = crm_strdup_printf("%s-%s", CRM_OP_SHUTDOWN,
node->details->uname);
shutdown_op = custom_action(NULL, shutdown_id, CRM_OP_SHUTDOWN, node, FALSE,
TRUE, node->details->data_set);
pcmk__order_stops_before_shutdown(node, shutdown_op);
add_hash_param(shutdown_op->meta, XML_ATTR_TE_NOWAIT, XML_BOOLEAN_TRUE);
return shutdown_op;
}
/*!
* \internal
* \brief Calculate and add an operation digest to XML
*
* Calculate an operation digest, which enables us to later determine when a
* restart is needed due to the resource's parameters being changed, and add it
* to given XML.
*
* \param[in] op Operation result from executor
* \param[in] update XML to add digest to
*/
static void
add_op_digest_to_xml(lrmd_event_data_t *op, xmlNode *update)
{
char *digest = NULL;
xmlNode *args_xml = NULL;
if (op->params == NULL) {
return;
}
args_xml = create_xml_node(NULL, XML_TAG_PARAMS);
g_hash_table_foreach(op->params, hash2field, args_xml);
pcmk__filter_op_for_digest(args_xml);
digest = calculate_operation_digest(args_xml, NULL);
crm_xml_add(update, XML_LRM_ATTR_OP_DIGEST, digest);
free_xml(args_xml);
free(digest);
}
#define FAKE_TE_ID "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
/*!
* \internal
* \brief Create XML for resource operation history update
*
* \param[in,out] parent Parent XML node to add to
* \param[in,out] op Operation event data
* \param[in] caller_version DC feature set
* \param[in] target_rc Expected result of operation
* \param[in] node Name of node on which operation was performed
* \param[in] origin Arbitrary description of update source
*
* \return Newly created XML node for history update
*/
xmlNode *
pcmk__create_history_xml(xmlNode *parent, lrmd_event_data_t *op,
const char *caller_version, int target_rc,
const char *node, const char *origin)
{
char *key = NULL;
char *magic = NULL;
char *op_id = NULL;
char *op_id_additional = NULL;
char *local_user_data = NULL;
const char *exit_reason = NULL;
xmlNode *xml_op = NULL;
const char *task = NULL;
CRM_CHECK(op != NULL, return NULL);
crm_trace("Creating history XML for %s-interval %s action for %s on %s "
"(DC version: %s, origin: %s)",
pcmk__readable_interval(op->interval_ms), op->op_type, op->rsc_id,
((node == NULL)? "no node" : node), caller_version, origin);
task = op->op_type;
/* Record a successful agent reload as a start, and a failed one as a
* monitor, to make life easier for the scheduler when determining the
* current state.
*
* @COMPAT We should check "reload" here only if the operation was for a
* pre-OCF-1.1 resource agent, but we don't know that here, and we should
* only ever get results for actions scheduled by us, so we can reasonably
* assume any "reload" is actually a pre-1.1 agent reload.
*/
if (pcmk__str_any_of(task, CRMD_ACTION_RELOAD, CRMD_ACTION_RELOAD_AGENT,
NULL)) {
if (op->op_status == PCMK_EXEC_DONE) {
task = CRMD_ACTION_START;
} else {
task = CRMD_ACTION_STATUS;
}
}
key = pcmk__op_key(op->rsc_id, task, op->interval_ms);
if (pcmk__str_eq(task, CRMD_ACTION_NOTIFY, pcmk__str_none)) {
const char *n_type = crm_meta_value(op->params, "notify_type");
const char *n_task = crm_meta_value(op->params, "notify_operation");
CRM_LOG_ASSERT(n_type != NULL);
CRM_LOG_ASSERT(n_task != NULL);
op_id = pcmk__notify_key(op->rsc_id, n_type, n_task);
if (op->op_status != PCMK_EXEC_PENDING) {
/* Ignore notify errors.
*
* @TODO It might be better to keep the correct result here, and
* ignore it in process_graph_event().
*/
lrmd__set_result(op, PCMK_OCF_OK, PCMK_EXEC_DONE, NULL);
}
/* Migration history is preserved separately, which usually matters for
* multiple nodes and is important for future cluster transitions.
*/
} else if (pcmk__str_any_of(op->op_type, CRMD_ACTION_MIGRATE,
CRMD_ACTION_MIGRATED, NULL)) {
op_id = strdup(key);
} else if (did_rsc_op_fail(op, target_rc)) {
op_id = pcmk__op_key(op->rsc_id, "last_failure", 0);
if (op->interval_ms == 0) {
// Ensure 'last' gets updated, in case record-pending is true
op_id_additional = pcmk__op_key(op->rsc_id, "last", 0);
}
exit_reason = op->exit_reason;
} else if (op->interval_ms > 0) {
op_id = strdup(key);
} else {
op_id = pcmk__op_key(op->rsc_id, "last", 0);
}
again:
xml_op = pcmk__xe_match(parent, XML_LRM_TAG_RSC_OP, XML_ATTR_ID, op_id);
if (xml_op == NULL) {
xml_op = create_xml_node(parent, XML_LRM_TAG_RSC_OP);
}
if (op->user_data == NULL) {
crm_debug("Generating fake transition key for: " PCMK__OP_FMT
" %d from %s", op->rsc_id, op->op_type, op->interval_ms,
op->call_id, origin);
local_user_data = pcmk__transition_key(-1, op->call_id, target_rc,
FAKE_TE_ID);
op->user_data = local_user_data;
}
if (magic == NULL) {
magic = crm_strdup_printf("%d:%d;%s", op->op_status, op->rc,
(const char *) op->user_data);
}
crm_xml_add(xml_op, XML_ATTR_ID, op_id);
crm_xml_add(xml_op, XML_LRM_ATTR_TASK_KEY, key);
crm_xml_add(xml_op, XML_LRM_ATTR_TASK, task);
crm_xml_add(xml_op, XML_ATTR_ORIGIN, origin);
crm_xml_add(xml_op, XML_ATTR_CRM_VERSION, caller_version);
crm_xml_add(xml_op, XML_ATTR_TRANSITION_KEY, op->user_data);
crm_xml_add(xml_op, XML_ATTR_TRANSITION_MAGIC, magic);
crm_xml_add(xml_op, XML_LRM_ATTR_EXIT_REASON, exit_reason == NULL ? "" : exit_reason);
crm_xml_add(xml_op, XML_LRM_ATTR_TARGET, node); /* For context during triage */
crm_xml_add_int(xml_op, XML_LRM_ATTR_CALLID, op->call_id);
crm_xml_add_int(xml_op, XML_LRM_ATTR_RC, op->rc);
crm_xml_add_int(xml_op, XML_LRM_ATTR_OPSTATUS, op->op_status);
crm_xml_add_ms(xml_op, XML_LRM_ATTR_INTERVAL_MS, op->interval_ms);
if (compare_version("2.1", caller_version) <= 0) {
if (op->t_run || op->t_rcchange || op->exec_time || op->queue_time) {
crm_trace("Timing data (" PCMK__OP_FMT
"): last=%u change=%u exec=%u queue=%u",
op->rsc_id, op->op_type, op->interval_ms,
op->t_run, op->t_rcchange, op->exec_time, op->queue_time);
if ((op->interval_ms != 0) && (op->t_rcchange != 0)) {
// Recurring ops may have changed rc after initial run
crm_xml_add_ll(xml_op, XML_RSC_OP_LAST_CHANGE,
(long long) op->t_rcchange);
} else {
crm_xml_add_ll(xml_op, XML_RSC_OP_LAST_CHANGE,
(long long) op->t_run);
}
crm_xml_add_int(xml_op, XML_RSC_OP_T_EXEC, op->exec_time);
crm_xml_add_int(xml_op, XML_RSC_OP_T_QUEUE, op->queue_time);
}
}
if (pcmk__str_any_of(op->op_type, CRMD_ACTION_MIGRATE, CRMD_ACTION_MIGRATED, NULL)) {
/*
* Record migrate_source and migrate_target always for migrate ops.
*/
const char *name = XML_LRM_ATTR_MIGRATE_SOURCE;
crm_xml_add(xml_op, name, crm_meta_value(op->params, name));
name = XML_LRM_ATTR_MIGRATE_TARGET;
crm_xml_add(xml_op, name, crm_meta_value(op->params, name));
}
add_op_digest_to_xml(op, xml_op);
if (op_id_additional) {
free(op_id);
op_id = op_id_additional;
op_id_additional = NULL;
goto again;
}
if (local_user_data) {
free(local_user_data);
op->user_data = NULL;
}
free(magic);
free(op_id);
free(key);
return xml_op;
}
/*!
* \internal
* \brief Check whether an action shutdown-locks a resource to a node
*
* If the shutdown-lock cluster property is set, resources will not be recovered
* on a different node if cleanly stopped, and may start only on that same node.
* This function checks whether that applies to a given action, so that the
* transition graph can be marked appropriately.
*
* \param[in] action Action to check
*
* \return true if \p action locks its resource to the action's node,
* otherwise false
*/
bool
pcmk__action_locks_rsc_to_node(const pe_action_t *action)
{
// Only resource actions taking place on resource's lock node are locked
if ((action == NULL) || (action->rsc == NULL)
|| (action->rsc->lock_node == NULL) || (action->node == NULL)
|| (action->node->details != action->rsc->lock_node->details)) {
return false;
}
/* During shutdown, only stops are locked (otherwise, another action such as
* a demote would cause the controller to clear the lock)
*/
if (action->node->details->shutdown && (action->task != NULL)
&& (strcmp(action->task, RSC_STOP) != 0)) {
return false;
}
return true;
}
/* lowest to highest */
static gint
sort_action_id(gconstpointer a, gconstpointer b)
{
const pe_action_wrapper_t *action_wrapper2 = (const pe_action_wrapper_t *)a;
const pe_action_wrapper_t *action_wrapper1 = (const pe_action_wrapper_t *)b;
if (a == NULL) {
return 1;
}
if (b == NULL) {
return -1;
}
if (action_wrapper1->action->id < action_wrapper2->action->id) {
return 1;
}
if (action_wrapper1->action->id > action_wrapper2->action->id) {
return -1;
}
return 0;
}
/*!
* \internal
* \brief Remove any duplicate action inputs, merging action flags
*
* \param[in] action Action whose inputs should be checked
*/
void
pcmk__deduplicate_action_inputs(pe_action_t *action)
{
GList *item = NULL;
GList *next = NULL;
pe_action_wrapper_t *last_input = NULL;
action->actions_before = g_list_sort(action->actions_before,
sort_action_id);
for (item = action->actions_before; item != NULL; item = next) {
pe_action_wrapper_t *input = (pe_action_wrapper_t *) item->data;
next = item->next;
if ((last_input != NULL)
&& (input->action->id == last_input->action->id)) {
crm_trace("Input %s (%d) duplicate skipped for action %s (%d)",
input->action->uuid, input->action->id,
action->uuid, action->id);
/* For the purposes of scheduling, the ordering flags no longer
* matter, but crm_simulate looks at certain ones when creating a
* dot graph. Combining the flags is sufficient for that purpose.
*/
last_input->type |= input->type;
if (input->state == pe_link_dumped) {
last_input->state = pe_link_dumped;
}
free(item->data);
action->actions_before = g_list_delete_link(action->actions_before,
item);
} else {
last_input = input;
input->state = pe_link_not_dumped;
}
}
}
/*!
* \internal
* \brief Output all scheduled actions
*
* \param[in] data_set Cluster working set
*/
void
pcmk__output_actions(pe_working_set_t *data_set)
{
pcmk__output_t *out = data_set->priv;
// Output node (non-resource) actions
for (GList *iter = data_set->actions; iter != NULL; iter = iter->next) {
char *node_name = NULL;
char *task = NULL;
pe_action_t *action = (pe_action_t *) iter->data;
if (action->rsc != NULL) {
continue; // Resource actions will be output later
} else if (pcmk_is_set(action->flags, pe_action_optional)) {
continue; // This action was not scheduled
}
if (pcmk__str_eq(action->task, CRM_OP_SHUTDOWN, pcmk__str_casei)) {
task = strdup("Shutdown");
} else if (pcmk__str_eq(action->task, CRM_OP_FENCE, pcmk__str_casei)) {
const char *op = g_hash_table_lookup(action->meta, "stonith_action");
task = crm_strdup_printf("Fence (%s)", op);
} else {
continue; // Don't display other node action types
}
if (pe__is_guest_node(action->node)) {
node_name = crm_strdup_printf("%s (resource: %s)",
action->node->details->uname,
action->node->details->remote_rsc->container->id);
} else if (action->node != NULL) {
node_name = crm_strdup_printf("%s", action->node->details->uname);
}
out->message(out, "node-action", task, node_name, action->reason);
free(node_name);
free(task);
}
// Output resource actions
for (GList *iter = data_set->resources; iter != NULL; iter = iter->next) {
pe_resource_t *rsc = (pe_resource_t *) iter->data;
rsc->cmds->output_actions(rsc);
}
}
/*!
* \internal
* \brief Schedule cancellation of a recurring action
*
* \param[in] rsc Resource that action is for
* \param[in] call_id Action's call ID from history
* \param[in] task Action name
* \param[in] interval_ms Action interval
* \param[in] node Node that history entry is for
* \param[in] reason Short description of why action is being cancelled
*/
static void
schedule_cancel(pe_resource_t *rsc, const char *call_id, const char *task,
guint interval_ms, pe_node_t *node, const char *reason)
{
pe_action_t *cancel = NULL;
CRM_CHECK((rsc != NULL) && (task != NULL)
&& (node != NULL) && (reason != NULL),
return);
crm_info("Recurring %s-interval %s for %s will be stopped on %s: %s",
pcmk__readable_interval(interval_ms), task, rsc->id,
pcmk__s(node->details->uname, "unknown node"), reason);
cancel = pcmk__new_cancel_action(rsc, task, interval_ms, node);
add_hash_param(cancel->meta, XML_LRM_ATTR_CALLID, call_id);
// Cancellations happen after stops
pcmk__new_ordering(rsc, stop_key(rsc), NULL, rsc, NULL, cancel,
pe_order_optional, rsc->cluster);
}
/*!
* \internal
* \brief Check whether action from resource history is still in configuration
*
* \param[in] rsc Resource that action is for
* \param[in] task Action's name
* \param[in] interval_ms Action's interval (in milliseconds)
*
* \return true if action is still in resource configuration, otherwise false
*/
static bool
action_in_config(pe_resource_t *rsc, const char *task, guint interval_ms)
{
char *key = pcmk__op_key(rsc->id, task, interval_ms);
bool config = (find_rsc_op_entry(rsc, key) != NULL);
free(key);
return config;
}
/*!
* \internal
* \brief Get action name needed to compare digest for configuration changes
*
* \param[in] task Action name from history
* \param[in] interval_ms Action interval (in milliseconds)
*
* \return Action name whose digest should be compared
*/
static const char *
task_for_digest(const char *task, guint interval_ms)
{
/* Certain actions need to be compared against the parameters used to start
* the resource.
*/
if ((interval_ms == 0)
&& pcmk__str_any_of(task, RSC_STATUS, RSC_MIGRATED, RSC_PROMOTE, NULL)) {
task = RSC_START;
}
return task;
}
/*!
* \internal
* \brief Check whether only sanitized parameters to an action changed
*
* When collecting CIB files for troubleshooting, crm_report will mask
* sensitive resource parameters. If simulations were run using that, affected
* resources would appear to need a restart, which would complicate
* troubleshooting. To avoid that, we save a "secure digest" of non-sensitive
* parameters. This function used that digest to check whether only masked
* parameters are different.
*
* \param[in] xml_op Resource history entry with secure digest
* \param[in] digest_data Operation digest information being compared
* \param[in] data_set Cluster working set
*
* \return true if only sanitized parameters changed, otherwise false
*/
static bool
only_sanitized_changed(xmlNode *xml_op, const op_digest_cache_t *digest_data,
pe_working_set_t *data_set)
{
const char *digest_secure = NULL;
if (!pcmk_is_set(data_set->flags, pe_flag_sanitized)) {
// The scheduler is not being run as a simulation
return false;
}
digest_secure = crm_element_value(xml_op, XML_LRM_ATTR_SECURE_DIGEST);
return (digest_data->rc != RSC_DIGEST_MATCH) && (digest_secure != NULL)
&& (digest_data->digest_secure_calc != NULL)
&& (strcmp(digest_data->digest_secure_calc, digest_secure) == 0);
}
/*!
* \internal
* \brief Force a restart due to a configuration change
*
* \param[in] rsc Resource that action is for
* \param[in] task Name of action whose configuration changed
* \param[in] interval_ms Action interval (in milliseconds)
* \param[in] node Node where resource should be restarted
*/
static void
force_restart(pe_resource_t *rsc, const char *task, guint interval_ms,
pe_node_t *node)
{
char *key = pcmk__op_key(rsc->id, task, interval_ms);
pe_action_t *required = custom_action(rsc, key, task, NULL, FALSE, TRUE,
rsc->cluster);
pe_action_set_reason(required, "resource definition change", true);
trigger_unfencing(rsc, node, "Device parameters changed", NULL,
rsc->cluster);
}
/*!
* \internal
* \brief Reschedule a recurring action
*
* \param[in] rsc Resource that action is for
* \param[in] task Name of action being rescheduled
* \param[in] interval_ms Action interval (in milliseconds)
* \param[in] node Node where action should be rescheduled
*/
static void
reschedule_recurring(pe_resource_t *rsc, const char *task, guint interval_ms,
pe_node_t *node)
{
pe_action_t *op = NULL;
trigger_unfencing(rsc, node, "Device parameters changed (reschedule)",
NULL, rsc->cluster);
op = custom_action(rsc, pcmk__op_key(rsc->id, task, interval_ms),
task, node, TRUE, TRUE, rsc->cluster);
pe__set_action_flags(op, pe_action_reschedule);
}
/*!
* \internal
* \brief Schedule a reload of a resource on a node
*
* \param[in] rsc Resource to reload
* \param[in] node Where resource should be reloaded
*/
static void
schedule_reload(pe_resource_t *rsc, pe_node_t *node)
{
pe_action_t *reload = NULL;
// For collective resources, just call recursively for children
if (rsc->variant > pe_native) {
g_list_foreach(rsc->children, (GFunc) schedule_reload, node);
return;
}
// Skip the reload in certain situations
if ((node == NULL)
|| !pcmk_is_set(rsc->flags, pe_rsc_managed)
|| pcmk_is_set(rsc->flags, pe_rsc_failed)) {
pe_rsc_trace(rsc, "Skip reload of %s:%s%s %s",
rsc->id,
pcmk_is_set(rsc->flags, pe_rsc_managed)? "" : " unmanaged",
pcmk_is_set(rsc->flags, pe_rsc_failed)? " failed" : "",
(node == NULL)? "inactive" : node->details->uname);
return;
}
/* If a resource's configuration changed while a start was pending,
* force a full restart instead of a reload.
*/
if (pcmk_is_set(rsc->flags, pe_rsc_start_pending)) {
pe_rsc_trace(rsc, "%s: preventing agent reload because start pending",
rsc->id);
custom_action(rsc, stop_key(rsc), CRMD_ACTION_STOP, node, FALSE, TRUE,
rsc->cluster);
return;
}
// Schedule the reload
pe__set_resource_flags(rsc, pe_rsc_reload);
reload = custom_action(rsc, reload_key(rsc), CRMD_ACTION_RELOAD_AGENT, node,
FALSE, TRUE, rsc->cluster);
pe_action_set_reason(reload, "resource definition change", FALSE);
// Set orderings so that a required stop or demote cancels the reload
pcmk__new_ordering(NULL, NULL, reload, rsc, stop_key(rsc), NULL,
pe_order_optional|pe_order_then_cancels_first,
rsc->cluster);
pcmk__new_ordering(NULL, NULL, reload, rsc, demote_key(rsc), NULL,
pe_order_optional|pe_order_then_cancels_first,
rsc->cluster);
}
/*!
* \internal
* \brief Handle any configuration change for an action
*
* Given an action from resource history, if the resource's configuration
* changed since the action was done, schedule any actions needed (restart,
* reload, unfencing, rescheduling recurring actions, etc.).
*
* \param[in] rsc Resource that action is for
* \param[in] node Node that action was on
* \param[in] xml_op Action XML from resource history
*
* \return true if action configuration changed, otherwise false
*/
bool
pcmk__check_action_config(pe_resource_t *rsc, pe_node_t *node, xmlNode *xml_op)
{
guint interval_ms = 0;
const char *task = NULL;
const op_digest_cache_t *digest_data = NULL;
CRM_CHECK((rsc != NULL) && (node != NULL) && (xml_op != NULL),
return false);
task = crm_element_value(xml_op, XML_LRM_ATTR_TASK);
CRM_CHECK(task != NULL, return false);
crm_element_value_ms(xml_op, XML_LRM_ATTR_INTERVAL_MS, &interval_ms);
// If this is a recurring action, check whether it has been orphaned
if (interval_ms > 0) {
if (action_in_config(rsc, task, interval_ms)) {
pe_rsc_trace(rsc, "%s-interval %s for %s on %s is in configuration",
pcmk__readable_interval(interval_ms), task, rsc->id,
node->details->uname);
} else if (pcmk_is_set(rsc->cluster->flags,
pe_flag_stop_action_orphans)) {
schedule_cancel(rsc,
crm_element_value(xml_op, XML_LRM_ATTR_CALLID),
task, interval_ms, node, "orphan");
return true;
} else {
pe_rsc_debug(rsc, "%s-interval %s for %s on %s is orphaned",
pcmk__readable_interval(interval_ms), task, rsc->id,
node->details->uname);
return true;
}
}
crm_trace("Checking %s-interval %s for %s on %s for configuration changes",
pcmk__readable_interval(interval_ms), task, rsc->id,
node->details->uname);
task = task_for_digest(task, interval_ms);
digest_data = rsc_action_digest_cmp(rsc, xml_op, node, rsc->cluster);
if (only_sanitized_changed(xml_op, digest_data, rsc->cluster)) {
if (!pcmk__is_daemon && (rsc->cluster->priv != NULL)) {
pcmk__output_t *out = rsc->cluster->priv;
out->info(out,
"Only 'private' parameters to %s-interval %s for %s "
"on %s changed: %s",
pcmk__readable_interval(interval_ms), task, rsc->id,
node->details->uname,
crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));
}
return false;
}
switch (digest_data->rc) {
case RSC_DIGEST_RESTART:
crm_log_xml_debug(digest_data->params_restart, "params:restart");
force_restart(rsc, task, interval_ms, node);
return true;
case RSC_DIGEST_ALL:
case RSC_DIGEST_UNKNOWN:
// Changes that can potentially be handled by an agent reload
if (interval_ms > 0) {
/* Recurring actions aren't reloaded per se, they are just
* re-scheduled so the next run uses the new parameters.
* The old instance will be cancelled automatically.
*/
crm_log_xml_debug(digest_data->params_all, "params:reschedule");
reschedule_recurring(rsc, task, interval_ms, node);
} else if (crm_element_value(xml_op,
XML_LRM_ATTR_RESTART_DIGEST) != NULL) {
// Agent supports reload, so use it
trigger_unfencing(rsc, node,
"Device parameters changed (reload)", NULL,
rsc->cluster);
crm_log_xml_debug(digest_data->params_all, "params:reload");
schedule_reload(rsc, node);
} else {
pe_rsc_trace(rsc,
"Restarting %s because agent doesn't support reload",
rsc->id);
crm_log_xml_debug(digest_data->params_restart,
"params:restart");
force_restart(rsc, task, interval_ms, node);
}
return true;
default:
break;
}
return false;
}
/*!
* \internal
* \brief Create a list of resource's action history entries, sorted by call ID
*
* \param[in] rsc Resource whose history should be checked
* \param[in] rsc_entry Resource's <lrm_rsc_op> status XML
* \param[out] start_index Where to store index of start-like action, if any
* \param[out] stop_index Where to store index of stop action, if any
*/
static GList *
rsc_history_as_list(pe_resource_t *rsc, xmlNode *rsc_entry,
int *start_index, int *stop_index)
{
GList *ops = NULL;
for (xmlNode *rsc_op = first_named_child(rsc_entry, XML_LRM_TAG_RSC_OP);
rsc_op != NULL; rsc_op = crm_next_same_xml(rsc_op)) {
ops = g_list_prepend(ops, rsc_op);
}
ops = g_list_sort(ops, sort_op_by_callid);
calculate_active_ops(ops, start_index, stop_index);
return ops;
}
/*!
* \internal
* \brief Process a resource's action history from the CIB status
*
* Given a resource's action history, if the resource's configuration
* changed since the actions were done, schedule any actions needed (restart,
* reload, unfencing, rescheduling recurring actions, clean-up, etc.).
* (This also cancels recurring actions for maintenance mode, which is not
* entirely related but convenient to do here.)
*
* \param[in] rsc_entry Resource's <lrm_rsc_op> status XML
* \param[in] rsc Resource whose history is being processed
* \param[in] node Node whose history is being processed
*/
static void
process_rsc_history(xmlNode *rsc_entry, pe_resource_t *rsc, pe_node_t *node)
{
int offset = -1;
int stop_index = 0;
int start_index = 0;
GList *sorted_op_list = NULL;
if (pcmk_is_set(rsc->flags, pe_rsc_orphan)) {
if (pe_rsc_is_anon_clone(uber_parent(rsc))) {
pe_rsc_trace(rsc,
"Skipping configuration check "
"for orphaned clone instance %s",
rsc->id);
} else {
pe_rsc_trace(rsc,
"Skipping configuration check and scheduling clean-up "
"for orphaned resource %s", rsc->id);
DeleteRsc(rsc, node, FALSE, rsc->cluster);
}
return;
}
if (pe_find_node_id(rsc->running_on, node->details->id) == NULL) {
if (pcmk__rsc_agent_changed(rsc, node, rsc_entry, false)) {
DeleteRsc(rsc, node, FALSE, rsc->cluster);
}
pe_rsc_trace(rsc,
"Skipping configuration check for %s "
"because no longer active on %s",
rsc->id, node->details->uname);
return;
}
pe_rsc_trace(rsc, "Checking for configuration changes for %s on %s",
rsc->id, node->details->uname);
if (pcmk__rsc_agent_changed(rsc, node, rsc_entry, true)) {
DeleteRsc(rsc, node, FALSE, rsc->cluster);
}
sorted_op_list = rsc_history_as_list(rsc, rsc_entry, &start_index,
&stop_index);
if (start_index < stop_index) {
return; // Resource is stopped
}
for (GList *iter = sorted_op_list; iter != NULL; iter = iter->next) {
xmlNode *rsc_op = (xmlNode *) iter->data;
const char *task = NULL;
guint interval_ms = 0;
if (++offset < start_index) {
// Skip actions that happened before 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
schedule_cancel(rsc,
crm_element_value(rsc_op, XML_LRM_ATTR_CALLID),
task, interval_ms, node, "maintenance mode");
} 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, rsc->cluster)) {
/* 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,
rsc->cluster);
} else if (pcmk__check_action_config(rsc, node, rsc_op)
&& (pe_get_failcount(node, rsc, NULL, pe_fc_effective,
NULL, rsc->cluster) != 0)) {
pe__clear_failcount(rsc, node, "action definition changed",
rsc->cluster);
}
}
}
g_list_free(sorted_op_list);
}
/*!
* \internal
* \brief Process a node's action history from the CIB status
*
* Given a node's resource history, if the resource's configuration changed
* since the actions were done, schedule any actions needed (restart,
* reload, unfencing, rescheduling recurring actions, clean-up, etc.).
* (This also cancels recurring actions for maintenance mode, which is not
* entirely related but convenient to do here.)
*
* \param[in] node Node whose history is being processed
* \param[in] lrm_rscs Node's <lrm_resources> from CIB status XML
* \param[in] data_set Cluster working set
*/
static void
process_node_history(pe_node_t *node, xmlNode *lrm_rscs, pe_working_set_t *data_set)
{
crm_trace("Processing history for node %s", node->details->uname);
for (xmlNode *rsc_entry = first_named_child(lrm_rscs, XML_LRM_TAG_RESOURCE);
rsc_entry != NULL; rsc_entry = crm_next_same_xml(rsc_entry)) {
if (xml_has_children(rsc_entry)) {
GList *result = pcmk__rscs_matching_id(ID(rsc_entry), data_set);
for (GList *iter = result; iter != NULL; iter = iter->next) {
pe_resource_t *rsc = (pe_resource_t *) iter->data;
if (rsc->variant == pe_native) {
process_rsc_history(rsc_entry, rsc, node);
}
}
g_list_free(result);
}
}
}
// XPath to find a node's resource history
#define XPATH_NODE_HISTORY "/" XML_TAG_CIB "/" XML_CIB_TAG_STATUS \
"/" XML_CIB_TAG_STATE "[@" XML_ATTR_UNAME "='%s']" \
"/" XML_CIB_TAG_LRM "/" XML_LRM_TAG_RESOURCES
/*!
* \internal
* \brief Process any resource configuration changes in the CIB status
*
* Go through all nodes' resource history, and if a resource's configuration
* changed since its actions were done, schedule any actions needed (restart,
* reload, unfencing, rescheduling recurring actions, clean-up, etc.).
* (This also cancels recurring actions for maintenance mode, which is not
* entirely related but convenient to do here.)
*
* \param[in] data_set Cluster working set
*/
void
pcmk__handle_rsc_config_changes(pe_working_set_t *data_set)
{
crm_trace("Check resource and action configuration for changes");
/* Rather than iterate through the status section, iterate through the nodes
* and search for the appropriate status subsection for each. This skips
* orphaned nodes and lets us eliminate some cases before searching the XML.
*/
for (GList *iter = data_set->nodes; iter != NULL; iter = iter->next) {
pe_node_t *node = (pe_node_t *) iter->data;
/* Don't bother checking actions for a node that can't run actions ...
* unless it's in maintenance mode, in which case we still need to
* cancel any existing recurring monitors.
*/
if (node->details->maintenance
|| pcmk__node_available(node, false, false)) {
char *xpath = NULL;
xmlNode *history = NULL;
xpath = crm_strdup_printf(XPATH_NODE_HISTORY, node->details->uname);
history = get_xpath_object(xpath, data_set->input, LOG_NEVER);
free(xpath);
process_node_history(node, history, data_set);
}
}
}

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