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Heuristics are set of commands executed locally on startup, cluster membership change, successful connect to corosync-qnetd and optionally also at regular times. When all commands finish successfully (their return error code is zero) on time, heuristics have passed, otherwise they have failed. The heuristics result is sent to corosync-qnetd and there it's used in calculations to determine which partition should be quorate. Right know, there are some problems (bugs): - Regular heuristics is supported only by ffsplit. This is not a problem for clusters with power fencing, but deployments where non-quorate partition continues to operate may see this as a problem. - Qdevice-tool status doesn't contain detailed information about heuristics. - Qdevice-tool doesn't have a possibility to trigger heuristics re-execute. Thanks Chrissie Caulfield for Englishify the man pages. Signed-off-by: Jan Friesse <jfriesse@redhat.com> Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>
182 lines
6.9 KiB
C
182 lines
6.9 KiB
C
/*
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* Copyright (c) 2015-2017 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Jan Friesse (jfriesse@redhat.com)
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*
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* This software licensed under BSD license, the text of which follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the Red Hat, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "qnetd-log.h"
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#include "qnetd-log-debug.h"
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#include "utils.h"
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void
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qnetd_log_debug_dump_cluster(struct qnetd_cluster *cluster)
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{
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struct qnetd_client *client;
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qnetd_log(LOG_DEBUG, " cluster dump:");
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TAILQ_FOREACH(client, &cluster->client_list, cluster_entries) {
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qnetd_log(LOG_DEBUG, " client = %s, node_id = "UTILS_PRI_NODE_ID,
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client->addr_str, client->node_id);
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}
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}
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void
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qnetd_log_debug_new_client_connected(struct qnetd_client *client)
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{
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qnetd_log(LOG_DEBUG, "New client connected");
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qnetd_log(LOG_DEBUG, " cluster name = %s", client->cluster_name);
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qnetd_log(LOG_DEBUG, " tls started = %u", client->tls_started);
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qnetd_log(LOG_DEBUG, " tls peer certificate verified = %u",
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client->tls_peer_certificate_verified);
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qnetd_log(LOG_DEBUG, " node_id = "UTILS_PRI_NODE_ID, client->node_id);
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qnetd_log(LOG_DEBUG, " pointer = %p", client);
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qnetd_log(LOG_DEBUG, " addr_str = %s", client->addr_str);
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qnetd_log(LOG_DEBUG, " ring id = (" UTILS_PRI_RING_ID ")", client->last_ring_id.node_id,
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client->last_ring_id.seq);
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qnetd_log_debug_dump_cluster(client->cluster);
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}
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void
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qnetd_log_debug_dump_node_list(struct qnetd_client *client, const struct node_list *nodes)
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{
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struct node_list_entry *node_info;
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qnetd_log(LOG_DEBUG, " node list:");
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TAILQ_FOREACH(node_info, nodes, entries) {
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qnetd_log(LOG_DEBUG, " node_id = "UTILS_PRI_NODE_ID", "
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"data_center_id = "UTILS_PRI_DATACENTER_ID", "
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"node_state = %s", node_info->node_id, node_info->data_center_id,
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tlv_node_state_to_str(node_info->node_state));
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}
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}
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void
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qnetd_log_debug_config_node_list_received(struct qnetd_client *client,
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uint32_t msg_seq_num, int config_version_set, uint64_t config_version,
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const struct node_list *nodes, int initial)
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{
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qnetd_log(LOG_DEBUG, "Client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") "
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"sent %s node list.", client->addr_str, client->cluster_name, client->node_id,
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(initial ? "initial" : "changed"));
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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if (config_version_set) {
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qnetd_log(LOG_DEBUG, " config version = " UTILS_PRI_CONFIG_VERSION, config_version);
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}
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qnetd_log_debug_dump_node_list(client, nodes);
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}
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void
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qnetd_log_debug_membership_node_list_received(struct qnetd_client *client,
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uint32_t msg_seq_num, const struct tlv_ring_id *ring_id,
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enum tlv_heuristics heuristics, const struct node_list *nodes)
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{
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qnetd_log(LOG_DEBUG, "Client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") "
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"sent membership node list.", client->addr_str, client->cluster_name, client->node_id);
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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qnetd_log(LOG_DEBUG, " ring id = (" UTILS_PRI_RING_ID ")", ring_id->node_id, ring_id->seq);
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qnetd_log(LOG_DEBUG, " heuristics = %s ", tlv_heuristics_to_str(heuristics));
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qnetd_log_debug_dump_node_list(client, nodes);
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}
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void
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qnetd_log_debug_quorum_node_list_received(struct qnetd_client *client,
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uint32_t msg_seq_num, enum tlv_quorate quorate, const struct node_list *nodes)
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{
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qnetd_log(LOG_DEBUG, "Client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") "
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"sent quorum node list.", client->addr_str, client->cluster_name, client->node_id);
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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qnetd_log(LOG_DEBUG, " quorate = %u", quorate);
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qnetd_log_debug_dump_node_list(client, nodes);
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}
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void
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qnetd_log_debug_client_disconnect(struct qnetd_client *client, int server_going_down)
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{
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qnetd_log(LOG_DEBUG, "Client %s (init_received %u, cluster %s, node_id "
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UTILS_PRI_NODE_ID") disconnect%s", client->addr_str, client->init_received,
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client->cluster_name, client->node_id,
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(server_going_down ? " (server is going down)" : ""));
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}
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void
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qnetd_log_debug_ask_for_vote_received(struct qnetd_client *client, uint32_t msg_seq_num)
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{
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qnetd_log(LOG_DEBUG, "Client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") "
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"asked for a vote", client->addr_str, client->cluster_name, client->node_id);
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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}
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void
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qnetd_log_debug_vote_info_reply_received(struct qnetd_client *client, uint32_t msg_seq_num)
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{
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qnetd_log(LOG_DEBUG, "Client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") "
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"replied back to vote info message", client->addr_str, client->cluster_name,
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client->node_id);
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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}
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void
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qnetd_log_debug_send_vote_info(struct qnetd_client *client, uint32_t msg_seq_num, enum tlv_vote vote)
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{
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qnetd_log(LOG_DEBUG, "Sending vote info to client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") ",
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client->addr_str, client->cluster_name, client->node_id);
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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qnetd_log(LOG_DEBUG, " vote = %s", tlv_vote_to_str(vote));
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}
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void
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qnetd_log_debug_heuristics_change_received(struct qnetd_client *client, uint32_t msg_seq_num,
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enum tlv_heuristics heuristics)
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{
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qnetd_log(LOG_DEBUG, "Client %s (cluster %s, node_id "UTILS_PRI_NODE_ID") "
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"sent heuristics change", client->addr_str, client->cluster_name, client->node_id);
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qnetd_log(LOG_DEBUG, " msg seq num = "UTILS_PRI_MSG_SEQ, msg_seq_num);
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qnetd_log(LOG_DEBUG, " heuristics = %s", tlv_heuristics_to_str(heuristics));
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}
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