clone.c
No OneTemporary
Actions

Size

46 KB

Referenced Files

None

Subscribers

None

clone.c
View Options

	/*
	* Copyright 2004-2018 Andrew Beekhof <andrew@beekhof.net>
	*
	* This source code is licensed under the GNU General Public License version 2
	* or later (GPLv2+) WITHOUT ANY WARRANTY.
	*/

	#include <crm_internal.h>

	#include <crm/msg_xml.h>
	#include <allocate.h>
	#include <notif.h>
	#include <utils.h>
	#include <allocate.h>

	#define VARIANT_CLONE 1
	#include <lib/pengine/variant.h>

	gint sort_clone_instance(gconstpointer a, gconstpointer b, gpointer data_set);
	static void append_parent_colocation(resource_t * rsc, resource_t * child, gboolean all);

	static gint
	sort_rsc_id(gconstpointer a, gconstpointer b)
	{
	const resource_t resource1 = (const resource_t )a;
	const resource_t resource2 = (const resource_t )b;

	CRM_ASSERT(resource1 != NULL);
	CRM_ASSERT(resource2 != NULL);

	return strcmp(resource1->id, resource2->id);
	}

	static node_t *
	parent_node_instance(const resource_t * rsc, node_t * node)
	{
	node_t *ret = NULL;

	if (node != NULL && rsc->parent) {
	ret = pe_hash_table_lookup(rsc->parent->allowed_nodes, node->details->id);
	} else if(node != NULL) {
	ret = pe_hash_table_lookup(rsc->allowed_nodes, node->details->id);
	}
	return ret;
	}

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

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

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

	if (did_fail(child_rsc)) {
	return TRUE;
	}
	}
	return FALSE;
	}

	gint
	sort_clone_instance(gconstpointer a, gconstpointer b, gpointer data_set)
	{
	int rc = 0;
	node_t *node1 = NULL;
	node_t *node2 = NULL;
	node_t *current_node1 = NULL;
	node_t *current_node2 = NULL;
	unsigned int nnodes1 = 0;
	unsigned int nnodes2 = 0;

	gboolean can1 = TRUE;
	gboolean can2 = TRUE;

	const resource_t resource1 = (const resource_t )a;
	const resource_t resource2 = (const resource_t )b;

	CRM_ASSERT(resource1 != NULL);
	CRM_ASSERT(resource2 != NULL);

	/* allocation order:
	* - active instances
	* - instances running on nodes with the least copies
	* - active instances on nodes that can't support them or are to be fenced
	* - failed instances
	* - inactive instances
	*/

	current_node1 = pe__find_active_on(resource1, &nnodes1, NULL);
	current_node2 = pe__find_active_on(resource2, &nnodes2, NULL);

	if (nnodes1 && nnodes2) {
	if (nnodes1 < nnodes2) {
	crm_trace("%s < %s: running_on", resource1->id, resource2->id);
	return -1;

	} else if (nnodes1 > nnodes2) {
	crm_trace("%s > %s: running_on", resource1->id, resource2->id);
	return 1;
	}
	}

	node1 = current_node1;
	node2 = current_node2;
	if (node1) {
	node_t *match = pe_hash_table_lookup(resource1->allowed_nodes, node1->details->id);

	if (match == NULL \|\| match->weight < 0) {
	crm_trace("%s: current location is unavailable", resource1->id);
	node1 = NULL;
	can1 = FALSE;
	}
	}

	if (node2) {
	node_t *match = pe_hash_table_lookup(resource2->allowed_nodes, node2->details->id);

	if (match == NULL \|\| match->weight < 0) {
	crm_trace("%s: current location is unavailable", resource2->id);
	node2 = NULL;
	can2 = FALSE;
	}
	}

	if (can1 != can2) {
	if (can1) {
	crm_trace("%s < %s: availability of current location", resource1->id, resource2->id);
	return -1;
	}
	crm_trace("%s > %s: availability of current location", resource1->id, resource2->id);
	return 1;
	}

	if (resource1->priority < resource2->priority) {
	crm_trace("%s < %s: priority", resource1->id, resource2->id);
	return 1;

	} else if (resource1->priority > resource2->priority) {
	crm_trace("%s > %s: priority", resource1->id, resource2->id);
	return -1;
	}

	if (node1 == NULL && node2 == NULL) {
	crm_trace("%s == %s: not active", resource1->id, resource2->id);
	return 0;
	}

	if (node1 != node2) {
	if (node1 == NULL) {
	crm_trace("%s > %s: active", resource1->id, resource2->id);
	return 1;
	} else if (node2 == NULL) {
	crm_trace("%s < %s: active", resource1->id, resource2->id);
	return -1;
	}
	}

	can1 = can_run_resources(node1);
	can2 = can_run_resources(node2);
	if (can1 != can2) {
	if (can1) {
	crm_trace("%s < %s: can", resource1->id, resource2->id);
	return -1;
	}
	crm_trace("%s > %s: can", resource1->id, resource2->id);
	return 1;
	}

	node1 = parent_node_instance(resource1, node1);
	node2 = parent_node_instance(resource2, node2);
	if (node1 != NULL && node2 == NULL) {
	crm_trace("%s < %s: not allowed", resource1->id, resource2->id);
	return -1;
	} else if (node1 == NULL && node2 != NULL) {
	crm_trace("%s > %s: not allowed", resource1->id, resource2->id);
	return 1;
	}

	if (node1 == NULL \|\| node2 == NULL) {
	crm_trace("%s == %s: not allowed", resource1->id, resource2->id);
	return 0;
	}

	if (node1->count < node2->count) {
	crm_trace("%s < %s: count", resource1->id, resource2->id);
	return -1;

	} else if (node1->count > node2->count) {
	crm_trace("%s > %s: count", resource1->id, resource2->id);
	return 1;
	}

	can1 = did_fail(resource1);
	can2 = did_fail(resource2);
	if (can1 != can2) {
	if (can1) {
	crm_trace("%s > %s: failed", resource1->id, resource2->id);
	return 1;
	}
	crm_trace("%s < %s: failed", resource1->id, resource2->id);
	return -1;
	}

	if (node1 && node2) {
	int lpc = 0;
	int max = 0;
	node_t *n = NULL;
	GListPtr gIter = NULL;
	GListPtr list1 = NULL;
	GListPtr list2 = NULL;
	GHashTable *hash1 =
	g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, g_hash_destroy_str);
	GHashTable *hash2 =
	g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, g_hash_destroy_str);

	n = node_copy(current_node1);
	g_hash_table_insert(hash1, (gpointer) n->details->id, n);

	n = node_copy(current_node2);
	g_hash_table_insert(hash2, (gpointer) n->details->id, n);

	if(resource1->parent) {
	for (gIter = resource1->parent->rsc_cons; gIter; gIter = gIter->next) {
	rsc_colocation_t constraint = (rsc_colocation_t ) gIter->data;

	crm_trace("Applying %s to %s", constraint->id, resource1->id);

	hash1 = native_merge_weights(constraint->rsc_rh, resource1->id, hash1,
	constraint->node_attribute,
	(float)constraint->score / INFINITY, 0);
	}

	for (gIter = resource1->parent->rsc_cons_lhs; gIter; gIter = gIter->next) {
	rsc_colocation_t constraint = (rsc_colocation_t ) gIter->data;

	crm_trace("Applying %s to %s", constraint->id, resource1->id);

	hash1 = native_merge_weights(constraint->rsc_lh, resource1->id, hash1,
	constraint->node_attribute,
	(float)constraint->score / INFINITY, pe_weights_positive);
	}
	}

	if(resource2->parent) {
	for (gIter = resource2->parent->rsc_cons; gIter; gIter = gIter->next) {
	rsc_colocation_t constraint = (rsc_colocation_t ) gIter->data;

	crm_trace("Applying %s to %s", constraint->id, resource2->id);

	hash2 = native_merge_weights(constraint->rsc_rh, resource2->id, hash2,
	constraint->node_attribute,
	(float)constraint->score / INFINITY, 0);
	}

	for (gIter = resource2->parent->rsc_cons_lhs; gIter; gIter = gIter->next) {
	rsc_colocation_t constraint = (rsc_colocation_t ) gIter->data;

	crm_trace("Applying %s to %s", constraint->id, resource2->id);

	hash2 = native_merge_weights(constraint->rsc_lh, resource2->id, hash2,
	constraint->node_attribute,
	(float)constraint->score / INFINITY, pe_weights_positive);
	}
	}

	/* Current location score */
	node1 = g_hash_table_lookup(hash1, current_node1->details->id);
	node2 = g_hash_table_lookup(hash2, current_node2->details->id);

	if (node1->weight < node2->weight) {
	if (node1->weight < 0) {
	crm_trace("%s > %s: current score: %d %d", resource1->id, resource2->id, node1->weight, node2->weight);
	rc = -1;
	goto out;

	} else {
	crm_trace("%s < %s: current score: %d %d", resource1->id, resource2->id, node1->weight, node2->weight);
	rc = 1;
	goto out;
	}

	} else if (node1->weight > node2->weight) {
	crm_trace("%s > %s: current score: %d %d", resource1->id, resource2->id, node1->weight, node2->weight);
	rc = -1;
	goto out;
	}

	/* All location scores */
	list1 = g_hash_table_get_values(hash1);
	list2 = g_hash_table_get_values(hash2);

	list1 = g_list_sort_with_data(list1, sort_node_weight, current_node1);
	list2 = g_list_sort_with_data(list2, sort_node_weight, current_node2);
	max = g_list_length(list1);
	if (max < g_list_length(list2)) {
	max = g_list_length(list2);
	}

	for (; lpc < max; lpc++) {
	node1 = g_list_nth_data(list1, lpc);
	node2 = g_list_nth_data(list2, lpc);
	if (node1 == NULL) {
	crm_trace("%s < %s: colocated score NULL", resource1->id, resource2->id);
	rc = 1;
	break;

	} else if (node2 == NULL) {
	crm_trace("%s > %s: colocated score NULL", resource1->id, resource2->id);
	rc = -1;
	break;
	}

	if (node1->weight < node2->weight) {
	crm_trace("%s < %s: colocated score", resource1->id, resource2->id);
	rc = 1;
	break;

	} else if (node1->weight > node2->weight) {
	crm_trace("%s > %s: colocated score", resource1->id, resource2->id);
	rc = -1;
	break;
	}
	}

	/* Order by reverse uname - same as sort_node_weight() does? */
	out:
	g_hash_table_destroy(hash1); /* Free mem */
	g_hash_table_destroy(hash2); /* Free mem */
	g_list_free(list1);
	g_list_free(list2);

	if (rc != 0) {
	return rc;
	}
	}

	rc = strcmp(resource1->id, resource2->id);
	crm_trace("%s %c %s: default", resource1->id, rc < 0 ? '<' : '>', resource2->id);
	return rc;
	}

	static node_t *
	can_run_instance(resource_t * rsc, node_t * node, int limit)
	{
	node_t *local_node = NULL;

	if (node == NULL && rsc->allowed_nodes) {
	GHashTableIter iter;
	g_hash_table_iter_init(&iter, rsc->allowed_nodes);
	while (g_hash_table_iter_next(&iter, NULL, (void **)&local_node)) {
	can_run_instance(rsc, local_node, limit);
	}
	return NULL;
	}

	if (can_run_resources(node) == FALSE) {
	goto bail;

	} else if (is_set(rsc->flags, pe_rsc_orphan)) {
	goto bail;
	}

	local_node = parent_node_instance(rsc, node);

	if (local_node == NULL) {
	crm_warn("%s cannot run on %s: node not allowed", rsc->id, node->details->uname);
	goto bail;

	} else if (local_node->weight < 0) {
	common_update_score(rsc, node->details->id, local_node->weight);
	pe_rsc_trace(rsc, "%s cannot run on %s: Parent node weight doesn't allow it.",
	rsc->id, node->details->uname);

	} else if (local_node->count < limit) {
	pe_rsc_trace(rsc, "%s can run on %s (already running %d)",
	rsc->id, node->details->uname, local_node->count);
	return local_node;

	} else {
	pe_rsc_trace(rsc, "%s cannot run on %s: node full (%d >= %d)",
	rsc->id, node->details->uname, local_node->count, limit);
	}

	bail:
	if (node) {
	common_update_score(rsc, node->details->id, -INFINITY);
	}
	return NULL;
	}

	static node_t *
	color_instance(resource_t * rsc, node_t * prefer, gboolean all_coloc, int limit, pe_working_set_t * data_set)
	{
	node_t *chosen = NULL;
	GHashTable *backup = NULL;

	CRM_ASSERT(rsc);
	pe_rsc_trace(rsc, "Checking allocation of %s (preferring %s, using %s parent colocations)",
	rsc->id, (prefer? prefer->details->uname: "none"),
	(all_coloc? "all" : "some"));

	if (is_not_set(rsc->flags, pe_rsc_provisional)) {
	return rsc->fns->location(rsc, NULL, FALSE);

	} else if (is_set(rsc->flags, pe_rsc_allocating)) {
	pe_rsc_debug(rsc, "Dependency loop detected involving %s", rsc->id);
	return NULL;
	}

	/* Only include positive colocation preferences of dependent resources
	* if not every node will get a copy of the clone
	*/
	append_parent_colocation(rsc->parent, rsc, all_coloc);

	if (prefer) {
	node_t *local_prefer = g_hash_table_lookup(rsc->allowed_nodes, prefer->details->id);

	if (local_prefer == NULL \|\| local_prefer->weight < 0) {
	pe_rsc_trace(rsc, "Not pre-allocating %s to %s - unavailable", rsc->id,
	prefer->details->uname);
	return NULL;
	}
	}

	can_run_instance(rsc, NULL, limit);

	backup = node_hash_dup(rsc->allowed_nodes);
	chosen = rsc->cmds->allocate(rsc, prefer, data_set);
	if (chosen) {
	node_t *local_node = parent_node_instance(rsc, chosen);
	if (prefer && (chosen->details != prefer->details)) {
	crm_notice("Pre-allocation failed: got %s instead of %s",
	chosen->details->uname, prefer->details->uname);
	g_hash_table_destroy(rsc->allowed_nodes);
	rsc->allowed_nodes = backup;
	native_deallocate(rsc);
	chosen = NULL;
	backup = NULL;

	} else if (local_node) {
	local_node->count++;

	} else if (is_set(rsc->flags, pe_rsc_managed)) {
	/* what to do? we can't enforce per-node limits in this case */
	crm_config_err("%s not found in %s (list=%d)",
	chosen->details->id, rsc->parent->id,
	g_hash_table_size(rsc->parent->allowed_nodes));
	}
	}

	if(backup) {
	g_hash_table_destroy(backup);
	}
	return chosen;
	}

	static void
	append_parent_colocation(resource_t * rsc, resource_t * child, gboolean all)
	{

	GListPtr gIter = NULL;

	gIter = rsc->rsc_cons;
	for (; gIter != NULL; gIter = gIter->next) {
	rsc_colocation_t cons = (rsc_colocation_t ) gIter->data;

	if (all \|\| cons->score < 0 \|\| cons->score == INFINITY) {
	child->rsc_cons = g_list_prepend(child->rsc_cons, cons);
	}
	}

	gIter = rsc->rsc_cons_lhs;
	for (; gIter != NULL; gIter = gIter->next) {
	rsc_colocation_t cons = (rsc_colocation_t ) gIter->data;

	if (all \|\| cons->score < 0) {
	child->rsc_cons_lhs = g_list_prepend(child->rsc_cons_lhs, cons);
	}
	}
	}


	void
	distribute_children(resource_t *rsc, GListPtr children, GListPtr nodes,
	int max, int per_host_max, pe_working_set_t * data_set);

	void
	distribute_children(resource_t *rsc, GListPtr children, GListPtr nodes,
	int max, int per_host_max, pe_working_set_t * data_set)
	{
	int loop_max = 0;
	int allocated = 0;
	int available_nodes = 0;

	/* count now tracks the number of clones currently allocated */
	for(GListPtr nIter = nodes; nIter != NULL; nIter = nIter->next) {
	pe_node_t *node = nIter->data;

	node->count = 0;
	if (can_run_resources(node)) {
	available_nodes++;
	}
	}

	if(available_nodes) {
	loop_max = max / available_nodes;
	}
	if (loop_max < 1) {
	loop_max = 1;
	}

	pe_rsc_debug(rsc, "Allocating up to %d %s instances to a possible %d nodes (at most %d per host, %d optimal)",
	max, rsc->id, available_nodes, per_host_max, loop_max);

	/* Pre-allocate as many instances as we can to their current location */
	for (GListPtr gIter = children; gIter != NULL && allocated < max; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	if (child->running_on && is_set(child->flags, pe_rsc_provisional)
	&& is_not_set(child->flags, pe_rsc_failed)) {
	node_t *child_node = pe__current_node(child);
	node_t *local_node = parent_node_instance(child, child_node);

	pe_rsc_trace(rsc, "Checking pre-allocation of %s to %s (%d remaining of %d)",
	child->id, child_node->details->uname, max - allocated, max);

	if (can_run_resources(child_node) == FALSE \|\| child_node->weight < 0) {
	pe_rsc_trace(rsc, "Not pre-allocating because %s can not run %s",
	child_node->details->uname, child->id);

	} else if(local_node && local_node->count >= loop_max) {
	pe_rsc_trace(rsc,
	"Not pre-allocating because %s already allocated optimal instances",
	child_node->details->uname);

	} else if (color_instance(child, child_node, max < available_nodes, per_host_max, data_set)) {
	pe_rsc_trace(rsc, "Pre-allocated %s to %s", child->id,
	child_node->details->uname);
	allocated++;
	}
	}
	}

	pe_rsc_trace(rsc, "Done pre-allocating (%d of %d)", allocated, max);

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

	if (child->running_on != NULL) {
	node_t *child_node = pe__current_node(child);
	node_t *local_node = parent_node_instance(child, child_node);

	if (local_node == NULL) {
	crm_err("%s is running on %s which isn't allowed",
	child->id, child_node->details->uname);
	}
	}

	if (is_not_set(child->flags, pe_rsc_provisional)) {
	} else if (allocated >= max) {
	pe_rsc_debug(rsc, "Child %s not allocated - limit reached %d %d", child->id, allocated, max);
	resource_location(child, NULL, -INFINITY, "clone_color:limit_reached", data_set);
	} else {
	if (color_instance(child, NULL, max < available_nodes, per_host_max, data_set)) {
	allocated++;
	}
	}
	}

	pe_rsc_debug(rsc, "Allocated %d %s instances of a possible %d",
	allocated, rsc->id, max);
	}


	node_t *
	clone_color(resource_t * rsc, node_t * prefer, pe_working_set_t * data_set)
	{
	GListPtr nodes = NULL;

	clone_variant_data_t *clone_data = NULL;

	get_clone_variant_data(clone_data, rsc);

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

	} else if (is_set(rsc->flags, pe_rsc_allocating)) {
	pe_rsc_debug(rsc, "Dependency loop detected involving %s", rsc->id);
	return NULL;
	}

	set_bit(rsc->flags, pe_rsc_allocating);
	pe_rsc_trace(rsc, "Processing %s", rsc->id);

	/* this information is used by sort_clone_instance() when deciding in which
	* order to allocate clone instances
	*/
	for (GListPtr gIter = rsc->rsc_cons; gIter != NULL; gIter = gIter->next) {
	rsc_colocation_t constraint = (rsc_colocation_t ) gIter->data;

	pe_rsc_trace(rsc, "%s: Coloring %s first", rsc->id, constraint->rsc_rh->id);
	constraint->rsc_rh->cmds->allocate(constraint->rsc_rh, prefer, data_set);
	}

	for (GListPtr gIter = rsc->rsc_cons_lhs; gIter != NULL; gIter = gIter->next) {
	rsc_colocation_t constraint = (rsc_colocation_t ) gIter->data;

	rsc->allowed_nodes =
	constraint->rsc_lh->cmds->merge_weights(constraint->rsc_lh, rsc->id, rsc->allowed_nodes,
	constraint->node_attribute,
	(float)constraint->score / INFINITY,
	(pe_weights_rollback \| pe_weights_positive));
	}

	dump_node_scores(show_scores ? 0 : scores_log_level, rsc, __FUNCTION__, rsc->allowed_nodes);

	nodes = g_hash_table_get_values(rsc->allowed_nodes);
	nodes = g_list_sort_with_data(nodes, sort_node_weight, NULL);
	rsc->children = g_list_sort_with_data(rsc->children, sort_clone_instance, data_set);
	distribute_children(rsc, rsc->children, nodes, clone_data->clone_max, clone_data->clone_node_max, data_set);
	g_list_free(nodes);

	clear_bit(rsc->flags, pe_rsc_provisional);
	clear_bit(rsc->flags, pe_rsc_allocating);

	pe_rsc_trace(rsc, "Done allocating %s", rsc->id);
	return NULL;
	}

	static void
	clone_update_pseudo_status(resource_t * rsc, gboolean * stopping, gboolean * starting,
	gboolean * active)
	{
	GListPtr gIter = NULL;

	if (rsc->children) {

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

	clone_update_pseudo_status(child, stopping, starting, active);
	}

	return;
	}

	CRM_ASSERT(active != NULL);
	CRM_ASSERT(starting != NULL);
	CRM_ASSERT(stopping != NULL);

	if (rsc->running_on) {
	*active = TRUE;
	}

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

	if (starting && stopping) {
	return;

	} else if (is_set(action->flags, pe_action_optional)) {
	pe_rsc_trace(rsc, "Skipping optional: %s", action->uuid);
	continue;

	} else if (is_set(action->flags, pe_action_pseudo) == FALSE
	&& is_set(action->flags, pe_action_runnable) == FALSE) {
	pe_rsc_trace(rsc, "Skipping unrunnable: %s", action->uuid);
	continue;

	} else if (safe_str_eq(RSC_STOP, action->task)) {
	pe_rsc_trace(rsc, "Stopping due to: %s", action->uuid);
	*stopping = TRUE;

	} else if (safe_str_eq(RSC_START, action->task)) {
	if (is_set(action->flags, pe_action_runnable) == FALSE) {
	pe_rsc_trace(rsc, "Skipping pseudo-op: %s run=%d, pseudo=%d",
	action->uuid, is_set(action->flags, pe_action_runnable),
	is_set(action->flags, pe_action_pseudo));
	} else {
	pe_rsc_trace(rsc, "Starting due to: %s", action->uuid);
	pe_rsc_trace(rsc, "%s run=%d, pseudo=%d",
	action->uuid, is_set(action->flags, pe_action_runnable),
	is_set(action->flags, pe_action_pseudo));
	*starting = TRUE;
	}
	}
	}
	}

	static action_t *
	find_rsc_action(resource_t * rsc, const char key, gboolean active_only, GListPtr list)
	{
	action_t *match = NULL;
	GListPtr possible = NULL;
	GListPtr active = NULL;

	possible = find_actions(rsc->actions, key, NULL);

	if (active_only) {
	GListPtr gIter = possible;

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

	if (is_set(op->flags, pe_action_optional) == FALSE) {
	active = g_list_prepend(active, op);
	}
	}

	if (active && g_list_length(active) == 1) {
	match = g_list_nth_data(active, 0);
	}

	if (list) {
	*list = active;
	active = NULL;
	}

	} else if (possible && g_list_length(possible) == 1) {
	match = g_list_nth_data(possible, 0);

	}
	if (list) {
	*list = possible;
	possible = NULL;
	}

	if (possible) {
	g_list_free(possible);
	}
	if (active) {
	g_list_free(active);
	}

	return match;
	}

	static void
	child_ordering_constraints(resource_t * rsc, pe_working_set_t * data_set)
	{
	char *key = NULL;
	action_t *stop = NULL;
	action_t *start = NULL;
	action_t *last_stop = NULL;
	action_t *last_start = NULL;
	GListPtr gIter = NULL;
	gboolean active_only = TRUE; /* change to false to get the old behavior */
	clone_variant_data_t *clone_data = NULL;

	get_clone_variant_data(clone_data, rsc);

	if (clone_data->ordered == FALSE) {
	return;
	}
	/* we have to maintain a consistent sorted child list when building order constraints */
	rsc->children = g_list_sort(rsc->children, sort_rsc_id);

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

	key = stop_key(child);
	stop = find_rsc_action(child, key, active_only, NULL);
	free(key);

	key = start_key(child);
	start = find_rsc_action(child, key, active_only, NULL);
	free(key);

	if (stop) {
	if (last_stop) {
	/* child/child relative stop */
	order_actions(stop, last_stop, pe_order_optional);
	}
	last_stop = stop;
	}

	if (start) {
	if (last_start) {
	/* child/child relative start */
	order_actions(last_start, start, pe_order_optional);
	}
	last_start = start;
	}
	}
	}

	void
	clone_create_actions(resource_t * rsc, pe_working_set_t * data_set)
	{
	clone_variant_data_t *clone_data = NULL;

	get_clone_variant_data(clone_data, rsc);
	clone_create_pseudo_actions(rsc, rsc->children, &clone_data->start_notify, &clone_data->stop_notify,data_set);
	child_ordering_constraints(rsc, data_set);
	}

	void
	clone_create_pseudo_actions(
	resource_t * rsc, GListPtr children, notify_data_t start_notify, notify_data_t stop_notify, pe_working_set_t * data_set)
	{
	gboolean child_active = FALSE;
	gboolean child_starting = FALSE;
	gboolean child_stopping = FALSE;
	gboolean allow_dependent_migrations = TRUE;

	action_t *stop = NULL;
	action_t *stopped = NULL;

	action_t *start = NULL;
	action_t *started = NULL;

	pe_rsc_trace(rsc, "Creating actions for %s", rsc->id);

	for (GListPtr gIter = children; gIter != NULL; gIter = gIter->next) {
	resource_t child_rsc = (resource_t ) gIter->data;
	gboolean starting = FALSE;
	gboolean stopping = FALSE;

	child_rsc->cmds->create_actions(child_rsc, data_set);
	clone_update_pseudo_status(child_rsc, &stopping, &starting, &child_active);
	if (stopping && starting) {
	allow_dependent_migrations = FALSE;
	}

	child_stopping \|= stopping;
	child_starting \|= starting;
	}

	/* start */
	start = create_pseudo_resource_op(rsc, RSC_START, !child_starting, TRUE, data_set);
	started = create_pseudo_resource_op(rsc, RSC_STARTED, !child_starting, FALSE, data_set);
	started->priority = INFINITY;

	if (child_active \|\| child_starting) {
	update_action_flags(started, pe_action_runnable, __FUNCTION__, __LINE__);
	}

	if (start_notify != NULL && *start_notify == NULL) {
	*start_notify = create_notification_boundaries(rsc, RSC_START, start, started, data_set);
	}

	/* stop */
	stop = create_pseudo_resource_op(rsc, RSC_STOP, !child_stopping, TRUE, data_set);
	stopped = create_pseudo_resource_op(rsc, RSC_STOPPED, !child_stopping, TRUE, data_set);
	stopped->priority = INFINITY;
	if (allow_dependent_migrations) {
	update_action_flags(stop, pe_action_migrate_runnable, __FUNCTION__, __LINE__);
	}

	if (stop_notify != NULL && *stop_notify == NULL) {
	*stop_notify = create_notification_boundaries(rsc, RSC_STOP, stop, stopped, data_set);

	if (start_notify && start_notify && stop_notify) {
	order_actions((stop_notify)->post_done, (start_notify)->pre, pe_order_optional);
	}
	}
	}

	void
	clone_internal_constraints(resource_t * rsc, pe_working_set_t * data_set)
	{
	resource_t *last_rsc = NULL;
	GListPtr gIter;
	clone_variant_data_t *clone_data = NULL;

	get_clone_variant_data(clone_data, rsc);

	pe_rsc_trace(rsc, "Internal constraints for %s", rsc->id);
	new_rsc_order(rsc, RSC_STOPPED, rsc, RSC_START, pe_order_optional, data_set);
	new_rsc_order(rsc, RSC_START, rsc, RSC_STARTED, pe_order_runnable_left, data_set);
	new_rsc_order(rsc, RSC_STOP, rsc, RSC_STOPPED, pe_order_runnable_left, data_set);

	if (rsc->variant == pe_master) {
	new_rsc_order(rsc, RSC_DEMOTED, rsc, RSC_STOP, pe_order_optional, data_set);
	new_rsc_order(rsc, RSC_STARTED, rsc, RSC_PROMOTE, pe_order_runnable_left, data_set);
	}

	if (clone_data->ordered) {
	/* we have to maintain a consistent sorted child list when building order constraints */
	rsc->children = g_list_sort(rsc->children, sort_rsc_id);
	}
	for (gIter = rsc->children; gIter != NULL; gIter = gIter->next) {
	resource_t child_rsc = (resource_t ) gIter->data;

	child_rsc->cmds->internal_constraints(child_rsc, data_set);

	order_start_start(rsc, child_rsc, pe_order_runnable_left \| pe_order_implies_first_printed);
	new_rsc_order(child_rsc, RSC_START, rsc, RSC_STARTED, pe_order_implies_then_printed,
	data_set);
	if (clone_data->ordered && last_rsc) {
	order_start_start(last_rsc, child_rsc, pe_order_optional);
	}

	order_stop_stop(rsc, child_rsc, pe_order_implies_first_printed);
	new_rsc_order(child_rsc, RSC_STOP, rsc, RSC_STOPPED, pe_order_implies_then_printed,
	data_set);
	if (clone_data->ordered && last_rsc) {
	order_stop_stop(child_rsc, last_rsc, pe_order_optional);
	}

	last_rsc = child_rsc;
	}
	}

	bool
	assign_node(resource_t * rsc, node_t * node, gboolean force)
	{
	bool changed = FALSE;

	if (rsc->children) {

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

	changed \|= assign_node(child_rsc, node, force);
	}

	return changed;
	}

	if (rsc->allocated_to != NULL) {
	changed = true;
	}

	native_assign_node(rsc, NULL, node, force);
	return changed;
	}

	gboolean
	is_child_compatible(resource_t child_rsc, node_t local_node, enum rsc_role_e filter, gboolean current)
	{
	node_t *node = NULL;
	enum rsc_role_e next_role = child_rsc->fns->state(child_rsc, current);

	CRM_CHECK(child_rsc && local_node, return FALSE);
	if (is_set_recursive(child_rsc, pe_rsc_block, TRUE) == FALSE) {
	/* We only want instances that haven't failed */
	node = child_rsc->fns->location(child_rsc, NULL, current);
	}

	if (filter != RSC_ROLE_UNKNOWN && next_role != filter) {
	crm_trace("Filtered %s", child_rsc->id);
	return FALSE;
	}

	if (node && (node->details == local_node->details)) {
	return TRUE;

	} else if (node) {
	crm_trace("%s - %s vs %s", child_rsc->id, node->details->uname,
	local_node->details->uname);

	} else {
	crm_trace("%s - not allocated %d", child_rsc->id, current);
	}
	return FALSE;
	}

	resource_t *
	find_compatible_child(resource_t * local_child, resource_t * rsc, enum rsc_role_e filter, gboolean current)
	{
	resource_t *pair = NULL;
	GListPtr gIter = NULL;
	GListPtr scratch = NULL;
	node_t *local_node = NULL;

	local_node = local_child->fns->location(local_child, NULL, current);
	if (local_node) {
	return find_compatible_child_by_node(local_child, local_node, rsc, filter, current);
	}

	scratch = g_hash_table_get_values(local_child->allowed_nodes);
	scratch = g_list_sort_with_data(scratch, sort_node_weight, NULL);

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

	pair = find_compatible_child_by_node(local_child, node, rsc, filter, current);
	if (pair) {
	goto done;
	}
	}

	pe_rsc_debug(rsc, "Can't pair %s with %s", local_child->id, rsc->id);
	done:
	g_list_free(scratch);
	return pair;
	}

	void
	clone_rsc_colocation_lh(resource_t * rsc_lh, resource_t * rsc_rh, rsc_colocation_t * constraint)
	{
	/* -- Never called --
	*
	* Instead we add the colocation constraints to the child and call from there
	*/
	CRM_ASSERT(FALSE);
	}

	void
	clone_rsc_colocation_rh(resource_t * rsc_lh, resource_t * rsc_rh, rsc_colocation_t * constraint)
	{
	GListPtr gIter = NULL;
	gboolean do_interleave = FALSE;
	const char *interleave_s = NULL;

	CRM_CHECK(constraint != NULL, return);
	CRM_CHECK(rsc_lh != NULL, pe_err("rsc_lh was NULL for %s", constraint->id); return);
	CRM_CHECK(rsc_rh != NULL, pe_err("rsc_rh was NULL for %s", constraint->id); return);
	CRM_CHECK(rsc_lh->variant == pe_native, return);

	pe_rsc_trace(rsc_rh, "Processing constraint %s: %s -> %s %d",
	constraint->id, rsc_lh->id, rsc_rh->id, constraint->score);

	/* only the LHS side needs to be labeled as interleave */
	interleave_s = g_hash_table_lookup(constraint->rsc_lh->meta, XML_RSC_ATTR_INTERLEAVE);
	if(crm_is_true(interleave_s) && constraint->rsc_lh->variant > pe_group) {
	// TODO: Do we actually care about multiple RH copies sharing a LH copy anymore?
	if (copies_per_node(constraint->rsc_lh) != copies_per_node(constraint->rsc_rh)) {
	crm_config_err("Cannot interleave %s and %s because"
	" they do not support the same number of copies per node",
	constraint->rsc_lh->id, constraint->rsc_rh->id);

	} else {
	do_interleave = TRUE;
	}
	}

	if (is_set(rsc_rh->flags, pe_rsc_provisional)) {
	pe_rsc_trace(rsc_rh, "%s is still provisional", rsc_rh->id);
	return;

	} else if (do_interleave) {
	resource_t *rh_child = NULL;

	rh_child = find_compatible_child(rsc_lh, rsc_rh, RSC_ROLE_UNKNOWN, FALSE);

	if (rh_child) {
	pe_rsc_debug(rsc_rh, "Pairing %s with %s", rsc_lh->id, rh_child->id);
	rsc_lh->cmds->rsc_colocation_lh(rsc_lh, rh_child, constraint);

	} else if (constraint->score >= INFINITY) {
	crm_notice("Cannot pair %s with instance of %s", rsc_lh->id, rsc_rh->id);
	assign_node(rsc_lh, NULL, TRUE);

	} else {
	pe_rsc_debug(rsc_rh, "Cannot pair %s with instance of %s", rsc_lh->id, rsc_rh->id);
	}

	return;

	} else if (constraint->score >= INFINITY) {
	GListPtr rhs = NULL;

	gIter = rsc_rh->children;
	for (; gIter != NULL; gIter = gIter->next) {
	resource_t child_rsc = (resource_t ) gIter->data;
	node_t *chosen = child_rsc->fns->location(child_rsc, NULL, FALSE);

	if (chosen != NULL && is_set_recursive(child_rsc, pe_rsc_block, TRUE) == FALSE) {
	pe_rsc_trace(rsc_rh, "Allowing %s: %s %d", constraint->id, chosen->details->uname, chosen->weight);
	rhs = g_list_prepend(rhs, chosen);
	}
	}

	node_list_exclude(rsc_lh->allowed_nodes, rhs, FALSE);
	g_list_free(rhs);
	return;
	}

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

	child_rsc->cmds->rsc_colocation_rh(rsc_lh, child_rsc, constraint);
	}
	}

	enum action_tasks
	clone_child_action(action_t * action)
	{
	enum action_tasks result = no_action;
	resource_t child = (resource_t ) action->rsc->children->data;

	if (safe_str_eq(action->task, "notify")
	\|\| safe_str_eq(action->task, "notified")) {

	/* Find the action we're notifying about instead */

	int stop = 0;
	char *key = action->uuid;
	int lpc = strlen(key);

	for (; lpc > 0; lpc--) {
	if (key[lpc] == '_' && stop == 0) {
	stop = lpc;

	} else if (key[lpc] == '_') {
	char *task_mutable = NULL;

	lpc++;
	task_mutable = strdup(key + lpc);
	task_mutable[stop - lpc] = 0;

	crm_trace("Extracted action '%s' from '%s'", task_mutable, key);
	result = get_complex_task(child, task_mutable, TRUE);
	free(task_mutable);
	break;
	}
	}

	} else {
	result = get_complex_task(child, action->task, TRUE);
	}
	return result;
	}

	enum pe_action_flags
	summary_action_flags(action_t * action, GListPtr children, node_t * node)
	{
	GListPtr gIter = NULL;
	gboolean any_runnable = FALSE;
	gboolean check_runnable = TRUE;
	enum action_tasks task = clone_child_action(action);
	enum pe_action_flags flags = (pe_action_optional \| pe_action_runnable \| pe_action_pseudo);
	const char *task_s = task2text(task);

	for (gIter = children; gIter != NULL; gIter = gIter->next) {
	action_t *child_action = NULL;
	resource_t child = (resource_t ) gIter->data;

	child_action = find_first_action(child->actions, NULL, task_s, child->children ? NULL : node);
	pe_rsc_trace(action->rsc, "Checking for %s in %s on %s (%s)", task_s, child->id,
	node ? node->details->uname : "none", child_action?child_action->uuid:"NA");
	if (child_action) {
	enum pe_action_flags child_flags = child->cmds->action_flags(child_action, node);

	if (is_set(flags, pe_action_optional)
	&& is_set(child_flags, pe_action_optional) == FALSE) {
	pe_rsc_trace(child, "%s is mandatory because of %s", action->uuid,
	child_action->uuid);
	flags = crm_clear_bit(__FUNCTION__, __LINE__, action->rsc->id, flags, pe_action_optional);
	pe_clear_action_bit(action, pe_action_optional);
	}
	if (is_set(child_flags, pe_action_runnable)) {
	any_runnable = TRUE;
	}
	}
	}

	if (check_runnable && any_runnable == FALSE) {
	pe_rsc_trace(action->rsc, "%s is not runnable because no children are", action->uuid);
	flags = crm_clear_bit(__FUNCTION__, __LINE__, action->rsc->id, flags, pe_action_runnable);
	if (node == NULL) {
	pe_clear_action_bit(action, pe_action_runnable);
	}
	}

	return flags;
	}

	enum pe_action_flags
	clone_action_flags(action_t * action, node_t * node)
	{
	return summary_action_flags(action, action->rsc->children, node);
	}

	void
	clone_rsc_location(pe_resource_t rsc, pe__location_t constraint)
	{
	GListPtr gIter = rsc->children;

	pe_rsc_trace(rsc, "Processing location constraint %s for %s", constraint->id, rsc->id);

	native_rsc_location(rsc, constraint);

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

	child_rsc->cmds->rsc_location(child_rsc, constraint);
	}
	}

	void
	clone_expand(resource_t * rsc, pe_working_set_t * data_set)
	{
	GListPtr gIter = NULL;
	clone_variant_data_t *clone_data = NULL;

	get_clone_variant_data(clone_data, rsc);

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

	rsc->cmds->action_flags(op, NULL);
	}

	if (clone_data->start_notify) {
	collect_notification_data(rsc, TRUE, TRUE, clone_data->start_notify);
	expand_notification_data(rsc, clone_data->start_notify, data_set);
	create_notifications(rsc, clone_data->start_notify, data_set);
	}

	if (clone_data->stop_notify) {
	collect_notification_data(rsc, TRUE, TRUE, clone_data->stop_notify);
	expand_notification_data(rsc, clone_data->stop_notify, data_set);
	create_notifications(rsc, clone_data->stop_notify, data_set);
	}

	if (clone_data->promote_notify) {
	collect_notification_data(rsc, TRUE, TRUE, clone_data->promote_notify);
	expand_notification_data(rsc, clone_data->promote_notify, data_set);
	create_notifications(rsc, clone_data->promote_notify, data_set);
	}

	if (clone_data->demote_notify) {
	collect_notification_data(rsc, TRUE, TRUE, clone_data->demote_notify);
	expand_notification_data(rsc, clone_data->demote_notify, data_set);
	create_notifications(rsc, clone_data->demote_notify, data_set);
	}

	/* Now that the notifcations have been created we can expand the children */

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

	child_rsc->cmds->expand(child_rsc, data_set);
	}

	native_expand(rsc, data_set);

	/* The notifications are in the graph now, we can destroy the notify_data */
	free_notification_data(clone_data->demote_notify);
	clone_data->demote_notify = NULL;
	free_notification_data(clone_data->stop_notify);
	clone_data->stop_notify = NULL;
	free_notification_data(clone_data->start_notify);
	clone_data->start_notify = NULL;
	free_notification_data(clone_data->promote_notify);
	clone_data->promote_notify = NULL;
	}

	// Check whether a resource or any of its children is known on node
	static bool
	rsc_known_on(pe_resource_t rsc, pe_node_t node)
	{
	if (rsc->children) {
	for (GList *child_iter = rsc->children; child_iter != NULL;
	child_iter = child_iter->next) {

	resource_t child = (resource_t ) child_iter->data;

	if (rsc_known_on(child, node)) {
	return TRUE;
	}
	}

	} else if (rsc->known_on) {
	GHashTableIter iter;
	node_t *known_node = NULL;

	g_hash_table_iter_init(&iter, rsc->known_on);
	while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &known_node)) {
	if (node->details == known_node->details) {
	return TRUE;
	}
	}
	}
	return FALSE;
	}

	// Look for an instance of clone that is known on node
	static pe_resource_t *
	find_instance_on(pe_resource_t clone, pe_node_t node)
	{
	for (GList *gIter = clone->children; gIter != NULL; gIter = gIter->next) {
	resource_t child = (resource_t ) gIter->data;

	if (rsc_known_on(child, node)) {
	return child;
	}
	}
	return NULL;
	}

	// For unique clones, probe each instance separately
	static gboolean
	probe_unique_clone(pe_resource_t rsc, pe_node_t node, pe_action_t *complete,
	gboolean force, pe_working_set_t *data_set)
	{
	gboolean any_created = FALSE;

	for (GList *child_iter = rsc->children; child_iter != NULL;
	child_iter = child_iter->next) {

	resource_t child = (resource_t ) child_iter->data;

	any_created \|= child->cmds->create_probe(child, node, complete, force,
	data_set);
	}
	return any_created;
	}

	// For anonymous clones, only a single instance needs to be probed
	static gboolean
	probe_anonymous_clone(pe_resource_t rsc, pe_node_t node,
	pe_action_t *complete, gboolean force,
	pe_working_set_t *data_set)
	{
	// First, check if we probed an instance on this node last time
	pe_resource_t *child = find_instance_on(rsc, node);

	// Otherwise, check if we plan to start an instance on this node
	if (child == NULL) {
	for (GList *child_iter = rsc->children; child_iter && !child;
	child_iter = child_iter->next) {

	node_t *local_node = NULL;
	resource_t child_rsc = (resource_t ) child_iter->data;

	local_node = child_rsc->fns->location(child_rsc, NULL, FALSE);
	if (local_node && (local_node->details == node->details)) {
	child = child_rsc;
	}
	}
	}

	// Otherwise, use the first clone instance
	if (child == NULL) {
	child = rsc->children->data;
	}
	return child->cmds->create_probe(child, node, complete, force, data_set);
	}

	gboolean
	clone_create_probe(resource_t * rsc, node_t * node, action_t * complete,
	gboolean force, pe_working_set_t * data_set)
	{
	gboolean any_created = FALSE;

	CRM_ASSERT(rsc);

	rsc->children = g_list_sort(rsc->children, sort_rsc_id);
	if (rsc->children == NULL) {
	pe_warn("Clone %s has no children", rsc->id);
	return FALSE;
	}

	if (rsc->exclusive_discover) {
	node_t *allowed = g_hash_table_lookup(rsc->allowed_nodes, node->details->id);
	if (allowed && allowed->rsc_discover_mode != pe_discover_exclusive) {
	/* exclusive discover is enabled and this node is not marked
	* as a node this resource should be discovered on
	*
	* remove the node from allowed_nodes so that the
	* notification contains only nodes that we might ever run
	* on
	*/
	g_hash_table_remove(rsc->allowed_nodes, node->details->id);

	/* Bit of a shortcut - might as well take it */
	return FALSE;
	}
	}

	if (is_set(rsc->flags, pe_rsc_unique)) {
	any_created = probe_unique_clone(rsc, node, complete, force, data_set);
	} else {
	any_created = probe_anonymous_clone(rsc, node, complete, force,
	data_set);
	}
	return any_created;
	}

	void
	clone_append_meta(resource_t * rsc, xmlNode * xml)
	{
	char *name = NULL;
	clone_variant_data_t *clone_data = NULL;

	get_clone_variant_data(clone_data, rsc);

	name = crm_meta_name(XML_RSC_ATTR_UNIQUE);
	crm_xml_add(xml, name, is_set(rsc->flags, pe_rsc_unique) ? "true" : "false");
	free(name);

	name = crm_meta_name(XML_RSC_ATTR_NOTIFY);
	crm_xml_add(xml, name, is_set(rsc->flags, pe_rsc_notify) ? "true" : "false");
	free(name);

	name = crm_meta_name(XML_RSC_ATTR_INCARNATION_MAX);
	crm_xml_add_int(xml, name, clone_data->clone_max);
	free(name);

	name = crm_meta_name(XML_RSC_ATTR_INCARNATION_NODEMAX);
	crm_xml_add_int(xml, name, clone_data->clone_node_max);
	free(name);
	}

	GHashTable *
	clone_merge_weights(resource_t * rsc, const char rhs, GHashTable nodes, const char *attr,
	float factor, enum pe_weights flags)
	{
	return rsc_merge_weights(rsc, rhs, nodes, attr, factor, flags);
	}

File Metadata

Mime Type: text/x-c
Expires: Thu, Jun 26, 8:08 PM (1 d, 30 m)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 1959645
Default Alt Text: clone.c (46 KB)

clone.cNo OneTemporaryActions

clone.cView Options

File Metadata

Event Timeline

clone.c
No OneTemporary
Actions

clone.c
View Options