예제 #1
0
파일: group.c 프로젝트: MEShrek/pacemaker
enum rsc_role_e
group_resource_state(const resource_t * rsc, gboolean current)
{
    enum rsc_role_e group_role = RSC_ROLE_UNKNOWN;
    GListPtr gIter = rsc->children;

    for (; gIter != NULL; gIter = gIter->next) {
        resource_t *child_rsc = (resource_t *) gIter->data;
        enum rsc_role_e role = child_rsc->fns->state(child_rsc, current);

        if (role > group_role) {
            group_role = role;
        }
    }

    pe_rsc_trace(rsc, "%s role: %s", rsc->id, role2text(group_role));
    return group_role;
}
예제 #2
0
void
create_notifications(resource_t * rsc, notify_data_t * n_data, pe_working_set_t * data_set)
{
    GListPtr gIter = NULL;
    action_t *stop = NULL;
    action_t *start = NULL;
    enum action_tasks task = text2task(n_data->action);

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

            create_notifications(child, n_data, data_set);
        }
        return;
    }

    /* Copy notification details into standard ops */

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

        if (is_set(op->flags, pe_action_optional) == FALSE && op->node != NULL) {
            enum action_tasks t = text2task(op->task);

            switch (t) {
                case start_rsc:
                case stop_rsc:
                case action_promote:
                case action_demote:
                    g_hash_table_foreach(n_data->keys, dup_attr, op->meta);
                    break;
                default:
                    break;
            }
        }
    }

    pe_rsc_trace(rsc, "Creating notifications for: %s.%s (%s->%s)",
                 n_data->action, rsc->id, role2text(rsc->role), role2text(rsc->next_role));

    stop = find_first_action(rsc->actions, NULL, RSC_STOP, NULL);
    start = find_first_action(rsc->actions, NULL, RSC_START, NULL);

    /* stop / demote */
    if (rsc->role != RSC_ROLE_STOPPED) {
        if (task == stop_rsc || task == action_demote) {
            gIter = rsc->running_on;
            for (; gIter != NULL; gIter = gIter->next) {
                node_t *current_node = (node_t *) gIter->data;

                /* if this stop action is a pseudo action as a result of the current
                 * node being fenced, this stop action is implied by the fencing 
                 * action. There's no reason to send the fenced node a stop notification */ 
                if (stop &&
                    is_set(stop->flags, pe_action_pseudo) &&
                    current_node->details->unclean) {

                    continue;
                }

                pe_notify(rsc, current_node, n_data->pre, n_data->pre_done, n_data, data_set);
                if (task == action_demote || stop == NULL
                    || is_set(stop->flags, pe_action_optional)) {
                    pe_post_notify(rsc, current_node, n_data, data_set);
                }
            }
        }
    }

    /* start / promote */
    if (rsc->next_role != RSC_ROLE_STOPPED) {
        if (rsc->allocated_to == NULL) {
            pe_proc_err("Next role '%s' but %s is not allocated", role2text(rsc->next_role),
                        rsc->id);

        } else if (task == start_rsc || task == action_promote) {
            if (task != start_rsc || start == NULL || is_set(start->flags, pe_action_optional)) {
                pe_notify(rsc, rsc->allocated_to, n_data->pre, n_data->pre_done, n_data, data_set);
            }
            pe_post_notify(rsc, rsc->allocated_to, n_data, data_set);
        }
    }
}
예제 #3
0
void
collect_notification_data(resource_t * rsc, gboolean state, gboolean activity,
                          notify_data_t * n_data)
{

    if(n_data->allowed_nodes == NULL) {
        n_data->allowed_nodes = rsc->allowed_nodes;
    }

    if (rsc->children) {
        GListPtr gIter = rsc->children;

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

            collect_notification_data(child, state, activity, n_data);
        }
        return;
    }

    if (state) {
        notify_entry_t *entry = NULL;

        entry = calloc(1, sizeof(notify_entry_t));
        entry->rsc = rsc;
        if (rsc->running_on) {
            /* we only take the first one */
            entry->node = rsc->running_on->data;
        }

        pe_rsc_trace(rsc, "%s state: %s", rsc->id, role2text(rsc->role));

        switch (rsc->role) {
            case RSC_ROLE_STOPPED:
                n_data->inactive = g_list_prepend(n_data->inactive, entry);
                break;
            case RSC_ROLE_STARTED:
                n_data->active = g_list_prepend(n_data->active, entry);
                break;
            case RSC_ROLE_SLAVE:
                n_data->slave = g_list_prepend(n_data->slave, entry);
                n_data->active = g_list_prepend(n_data->active,
                                                dup_notify_entry(entry));
                break;
            case RSC_ROLE_MASTER:
                n_data->master = g_list_prepend(n_data->master, entry);
                n_data->active = g_list_prepend(n_data->active,
                                                dup_notify_entry(entry));
                break;
            default:
                crm_err("Unsupported notify role");
                free(entry);
                break;
        }
    }

    if (activity) {
        notify_entry_t *entry = NULL;
        enum action_tasks task;

        GListPtr gIter = rsc->actions;

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

            if (is_set(op->flags, pe_action_optional) == FALSE && op->node != NULL) {

                entry = calloc(1, sizeof(notify_entry_t));
                entry->node = op->node;
                entry->rsc = rsc;

                task = text2task(op->task);
                switch (task) {
                    case start_rsc:
                        n_data->start = g_list_prepend(n_data->start, entry);
                        break;
                    case stop_rsc:
                        n_data->stop = g_list_prepend(n_data->stop, entry);
                        break;
                    case action_promote:
                        n_data->promote = g_list_prepend(n_data->promote, entry);
                        break;
                    case action_demote:
                        n_data->demote = g_list_prepend(n_data->demote, entry);
                        break;
                    default:
                        free(entry);
                        break;
                }
            }
        }
    }
}
예제 #4
0
void
create_notifications(resource_t * rsc, notify_data_t * n_data, pe_working_set_t * data_set)
{
    GListPtr gIter = NULL;
    action_t *stop = NULL;
    action_t *start = NULL;
    enum action_tasks task = text2task(n_data->action);

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

            create_notifications(child, n_data, data_set);
        }
        return;
    }

    /* Copy notification details into standard ops */

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

        if (is_set(op->flags, pe_action_optional) == FALSE && op->node != NULL) {
            enum action_tasks t = text2task(op->task);

            switch (t) {
                case start_rsc:
                case stop_rsc:
                case action_promote:
                case action_demote:
                    add_notify_data_to_action_meta(n_data, op);
                    break;
                default:
                    break;
            }
        }
    }

    switch (task) {
        case start_rsc:
            if(g_list_length(n_data->start) == 0) {
                pe_rsc_trace(rsc, "Skipping empty notification for: %s.%s (%s->%s)",
                             n_data->action, rsc->id, role2text(rsc->role), role2text(rsc->next_role));
                return;
            }
            break;
        case action_promote:
            if(g_list_length(n_data->promote) == 0) {
                pe_rsc_trace(rsc, "Skipping empty notification for: %s.%s (%s->%s)",
                             n_data->action, rsc->id, role2text(rsc->role), role2text(rsc->next_role));
                return;
            }
            break;
        case action_demote:
            if(g_list_length(n_data->demote) == 0) {
                pe_rsc_trace(rsc, "Skipping empty notification for: %s.%s (%s->%s)",
                             n_data->action, rsc->id, role2text(rsc->role), role2text(rsc->next_role));
                return;
            }
            break;
        default:
            /* We cannot do the same for stop_rsc/n_data->stop at it
             * might be implied by fencing
             */
            break;
    }

    pe_rsc_trace(rsc, "Creating notifications for: %s.%s (%s->%s)",
                 n_data->action, rsc->id, role2text(rsc->role), role2text(rsc->next_role));

    stop = find_first_action(rsc->actions, NULL, RSC_STOP, NULL);
    start = find_first_action(rsc->actions, NULL, RSC_START, NULL);

    /* stop / demote */
    if (rsc->role != RSC_ROLE_STOPPED) {
        if (task == stop_rsc || task == action_demote) {
            gIter = rsc->running_on;
            for (; gIter != NULL; gIter = gIter->next) {
                node_t *current_node = (node_t *) gIter->data;

                /* if this stop action is a pseudo action as a result of the current
                 * node being fenced, this stop action is implied by the fencing 
                 * action. There's no reason to send the fenced node a stop notification */ 
                if (stop &&
                    is_set(stop->flags, pe_action_pseudo) &&
                    (current_node->details->unclean || current_node->details->remote_requires_reset) ) {

                    continue;
                }

                pe_notify(rsc, current_node, n_data->pre, n_data->pre_done, n_data, data_set);
                if (task == action_demote || stop == NULL
                    || is_set(stop->flags, pe_action_optional)) {
                    pe_post_notify(rsc, current_node, n_data, data_set);
                }
            }
        }
    }

    /* start / promote */
    if (rsc->next_role != RSC_ROLE_STOPPED) {
        if (rsc->allocated_to == NULL) {
            pe_proc_err("Next role '%s' but %s is not allocated", role2text(rsc->next_role),
                        rsc->id);

        } else if (task == start_rsc || task == action_promote) {

            if (start) {
                pe_action_t *remote_start = find_remote_start(start);

                if (remote_start
                    && is_not_set(remote_start->flags, pe_action_runnable)) {
                    /* Start and promote actions for a clone instance behind
                     * a Pacemaker Remote connection happen after the
                     * connection starts. If the connection start is blocked, do
                     * not schedule notifications for these actions.
                     */
                    return;
                }
            }
            if (task != start_rsc || start == NULL || is_set(start->flags, pe_action_optional)) {
                pe_notify(rsc, rsc->allocated_to, n_data->pre, n_data->pre_done, n_data, data_set);
            }
            pe_post_notify(rsc, rsc->allocated_to, n_data, data_set);
        }
    }
}
예제 #5
0
파일: master.c 프로젝트: smellman/pacemaker
void
master_rsc_colocation_rh(resource_t * rsc_lh, resource_t * rsc_rh, rsc_colocation_t * constraint)
{
    GListPtr gIter = NULL;
    clone_variant_data_t *clone_data = NULL;

    get_clone_variant_data(clone_data, rsc_rh);

    CRM_CHECK(rsc_rh != NULL, return);
    if (is_set(rsc_rh->flags, pe_rsc_provisional)) {
        return;

    } else if (constraint->role_rh == RSC_ROLE_UNKNOWN) {
        crm_trace("Handling %s as a clone colocation", constraint->id);
        clone_rsc_colocation_rh(rsc_lh, rsc_rh, constraint);
        return;
    }

    CRM_CHECK(rsc_lh != NULL, return);
    CRM_CHECK(rsc_lh->variant == pe_native, return);
    crm_trace("Processing constraint %s: %d", constraint->id, constraint->score);

    if (constraint->role_rh == RSC_ROLE_UNKNOWN) {

        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);
        }

    } else if (is_set(rsc_lh->flags, pe_rsc_provisional)) {
        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);
            enum rsc_role_e next_role = child_rsc->fns->state(child_rsc, FALSE);

            crm_trace("Processing: %s", child_rsc->id);
            if (chosen != NULL && next_role == constraint->role_rh) {
                crm_trace("Applying: %s %s %s %d", child_rsc->id,
                            role2text(next_role), chosen->details->uname, constraint->score);
                if (constraint->score < INFINITY) {
                    node_hash_update_one(rsc_lh->allowed_nodes, chosen,
                                         constraint->node_attribute, constraint->score);
                }
                rhs = g_list_prepend(rhs, chosen);
            }
        }

        /* Only do this if its not a master-master colocation
         * Doing this unconditionally would prevent the slaves from being started
         */
        if (constraint->role_lh != RSC_ROLE_MASTER || constraint->role_rh != RSC_ROLE_MASTER) {
            if (constraint->score >= INFINITY) {
                node_list_exclude(rsc_lh->allowed_nodes, rhs, TRUE);
            }
        }
        g_list_free(rhs);

    } else if (constraint->role_lh == RSC_ROLE_MASTER) {
        resource_t *rh_child = find_compatible_child(rsc_lh, rsc_rh, constraint->role_rh, FALSE);

        if (rh_child == NULL && constraint->score >= INFINITY) {
            crm_trace("%s can't be promoted %s", rsc_lh->id, constraint->id);
            rsc_lh->priority = -INFINITY;

        } else if (rh_child != NULL) {
            int new_priority = merge_weights(rsc_lh->priority, constraint->score);

            crm_debug("Applying %s to %s", constraint->id, rsc_lh->id);
            crm_debug("\t%s: %d->%d", rsc_lh->id, rsc_lh->priority, new_priority);
            rsc_lh->priority = new_priority;
        }
    }

    return;
}
예제 #6
0
파일: master.c 프로젝트: smellman/pacemaker
node_t *
master_color(resource_t * rsc, node_t * prefer, pe_working_set_t * data_set)
{
    int promoted = 0;
    GListPtr gIter = NULL;
    GListPtr gIter2 = NULL;

    GHashTableIter iter;
    node_t *node = NULL;
    node_t *chosen = NULL;
    node_t *cons_node = NULL;
    enum rsc_role_e next_role = RSC_ROLE_UNKNOWN;

    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)) {
        crm_debug("Dependency loop detected involving %s", rsc->id);
        return NULL;
    }

    apply_master_prefs(rsc);

    clone_color(rsc, prefer, data_set);

    set_bit(rsc->flags, pe_rsc_allocating);

    /* count now tracks the number of masters allocated */
    g_hash_table_iter_init(&iter, rsc->allowed_nodes);
    while (g_hash_table_iter_next(&iter, NULL, (void **)&node)) {
        node->count = 0;
    }

    /*
     * assign priority
     */
    gIter = rsc->children;
    for (; gIter != NULL; gIter = gIter->next) {
        GListPtr list = NULL;
        resource_t *child_rsc = (resource_t *) gIter->data;

        crm_trace("Assigning priority for %s: %s", child_rsc->id,
                    role2text(child_rsc->next_role));

        if (child_rsc->fns->state(child_rsc, TRUE) == RSC_ROLE_STARTED) {
            set_role_slave(child_rsc, TRUE);
        }

        chosen = child_rsc->fns->location(child_rsc, &list, FALSE);
        if (g_list_length(list) > 1) {
            crm_config_err("Cannot promote non-colocated child %s", child_rsc->id);
        }

        g_list_free(list);
        if (chosen == NULL) {
            continue;
        }

        next_role = child_rsc->fns->state(child_rsc, FALSE);
        switch (next_role) {
            case RSC_ROLE_STARTED:
            case RSC_ROLE_UNKNOWN:
                CRM_CHECK(chosen != NULL, break);
                /*
                 * Default to -1 if no value is set
                 *
                 * This allows master locations to be specified
                 * based solely on rsc_location constraints,
                 * but prevents anyone from being promoted if
                 * neither a constraint nor a master-score is present
                 */
                child_rsc->priority = master_score(child_rsc, chosen, -1);
                break;

            case RSC_ROLE_SLAVE:
            case RSC_ROLE_STOPPED:
                child_rsc->priority = -INFINITY;
                break;
            case RSC_ROLE_MASTER:
                /* We will arrive here if we're re-creating actions after a stonith
                 */
                break;
            default:
                CRM_CHECK(FALSE /* unhandled */ ,
                          crm_err("Unknown resource role: %d for %s", next_role, child_rsc->id));
        }

        apply_master_location(child_rsc->rsc_location);
        apply_master_location(rsc->rsc_location);

        gIter2 = child_rsc->rsc_cons;
        for (; gIter2 != NULL; gIter2 = gIter2->next) {
            rsc_colocation_t *cons = (rsc_colocation_t *) gIter2->data;

            child_rsc->cmds->rsc_colocation_lh(child_rsc, cons->rsc_rh, cons);
        }

        child_rsc->sort_index = child_rsc->priority;
        crm_trace("Assigning priority for %s: %d", child_rsc->id, child_rsc->priority);

        if (next_role == RSC_ROLE_MASTER) {
            child_rsc->sort_index = INFINITY;
        }
    }

    dump_node_scores(LOG_DEBUG_3, rsc, "Pre merge", rsc->allowed_nodes);
    master_promotion_order(rsc, data_set);

    /* mark the first N as masters */

    gIter = rsc->children;
    for (; gIter != NULL; gIter = gIter->next) {
        resource_t *child_rsc = (resource_t *) gIter->data;
        char *score = score2char(child_rsc->sort_index);

        chosen = child_rsc->fns->location(child_rsc, NULL, FALSE);
        if (show_scores) {
            fprintf(stdout, "%s promotion score on %s: %s\n",
                    child_rsc->id, chosen ? chosen->details->uname : "none", score);

        } else {
            do_crm_log(scores_log_level, "%s promotion score on %s: %s",
                                child_rsc->id, chosen ? chosen->details->uname : "none", score);
        }
        crm_free(score);

        chosen = NULL;          /* nuke 'chosen' so that we don't promote more than the
                                 * required number of instances
                                 */

        if (child_rsc->sort_index < 0) {
            crm_trace("Not supposed to promote child: %s", child_rsc->id);

        } else if (promoted < clone_data->master_max || is_not_set(rsc->flags, pe_rsc_managed)) {
            chosen = can_be_master(child_rsc);
        }

        crm_debug("%s master score: %d", child_rsc->id, child_rsc->priority);

        if (chosen == NULL) {
            set_role_slave(child_rsc, FALSE);
            continue;
        }

        chosen->count++;
        crm_info("Promoting %s (%s %s)",
                 child_rsc->id, role2text(child_rsc->role), chosen->details->uname);
        set_role_master(child_rsc);
        promoted++;
    }

    clone_data->masters_allocated = promoted;
    crm_info("%s: Promoted %d instances of a possible %d to master",
             rsc->id, promoted, clone_data->master_max);

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

    return NULL;
}
예제 #7
0
파일: master.c 프로젝트: smellman/pacemaker
static node_t *
can_be_master(resource_t * rsc)
{
    node_t *node = NULL;
    node_t *local_node = NULL;
    resource_t *parent = uber_parent(rsc);
    clone_variant_data_t *clone_data = NULL;

#if 0
    enum rsc_role_e role = RSC_ROLE_UNKNOWN;

    role = rsc->fns->state(rsc, FALSE);
    crm_info("%s role: %s", rsc->id, role2text(role));
#endif

    if (rsc->children) {
        GListPtr gIter = rsc->children;

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

            if (can_be_master(child) == NULL) {
                crm_trace( "Child %s of %s can't be promoted", child->id, rsc->id);
                return NULL;
            }
        }
    }

    node = rsc->fns->location(rsc, NULL, FALSE);
    if (node == NULL) {
        crm_trace( "%s cannot be master: not allocated", rsc->id);
        return NULL;

    } else if (is_not_set(rsc->flags, pe_rsc_managed)) {
        if (rsc->fns->state(rsc, TRUE) == RSC_ROLE_MASTER) {
            crm_notice("Forcing unmanaged master %s to remain promoted on %s",
                       rsc->id, node->details->uname);

        } else {
            return NULL;
        }

    } else if (rsc->priority < 0) {
        crm_trace( "%s cannot be master: preference: %d", rsc->id, rsc->priority);
        return NULL;

    } else if (can_run_resources(node) == FALSE) {
        crm_trace( "Node cant run any resources: %s", node->details->uname);
        return NULL;
    }

    get_clone_variant_data(clone_data, parent);
    local_node = pe_hash_table_lookup(parent->allowed_nodes, node->details->id);

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

    } else if (local_node->count < clone_data->master_node_max
               || is_not_set(rsc->flags, pe_rsc_managed)) {
        return local_node;

    } else {
        crm_trace( "%s cannot be master on %s: node full",
                            rsc->id, node->details->uname);
    }

    return NULL;
}
예제 #8
0
void
cli_resource_print_colocation(resource_t * rsc, bool dependents, bool recursive, int offset)
{
    char *prefix = NULL;
    GListPtr lpc = NULL;
    GListPtr list = rsc->rsc_cons;

    prefix = calloc(1, (offset * 4) + 1);
    memset(prefix, ' ', offset * 4);

    if (dependents) {
        list = rsc->rsc_cons_lhs;
    }

    if (is_set(rsc->flags, pe_rsc_allocating)) {
        /* Break colocation loops */
        printf("loop %s\n", rsc->id);
        free(prefix);
        return;
    }

    set_bit(rsc->flags, pe_rsc_allocating);
    for (lpc = list; lpc != NULL; lpc = lpc->next) {
        rsc_colocation_t *cons = (rsc_colocation_t *) lpc->data;

        char *score = NULL;
        resource_t *peer = cons->rsc_rh;

        if (dependents) {
            peer = cons->rsc_lh;
        }

        if (is_set(peer->flags, pe_rsc_allocating)) {
            if (dependents == FALSE) {
                fprintf(stdout, "%s%-*s (id=%s - loop)\n", prefix, 80 - (4 * offset), peer->id,
                        cons->id);
            }
            continue;
        }

        if (dependents && recursive) {
            cli_resource_print_colocation(peer, dependents, recursive, offset + 1);
        }

        score = score2char(cons->score);
        if (cons->role_rh > RSC_ROLE_STARTED) {
            fprintf(stdout, "%s%-*s (score=%s, %s role=%s, id=%s)\n", prefix, 80 - (4 * offset),
                    peer->id, score, dependents ? "needs" : "with", role2text(cons->role_rh),
                    cons->id);
        } else {
            fprintf(stdout, "%s%-*s (score=%s, id=%s)\n", prefix, 80 - (4 * offset),
                    peer->id, score, cons->id);
        }
        cli_resource_print_location(peer, prefix);
        free(score);

        if (!dependents && recursive) {
            cli_resource_print_colocation(peer, dependents, recursive, offset + 1);
        }
    }
    free(prefix);
}