guint
reap_crm_member(uint32_t id)
{
int matches = 0;
crm_node_t *node = g_hash_table_lookup(crm_peer_id_cache, GUINT_TO_POINTER(id));
if (node == NULL) {
crm_info("Peer %u is unknown", id);
} else if (crm_is_peer_active(node)) {
crm_warn("Peer %u/%s is still active", id, node->uname);
} else {
if (g_hash_table_remove(crm_peer_id_cache, GUINT_TO_POINTER(id))) {
crm_notice("Removed dead peer %u from the uuid cache", id);
} else {
crm_warn("Peer %u/%s was not removed", id, node->uname);
}
matches = g_hash_table_foreach_remove(crm_peer_cache, crm_reap_dead_member, node);
crm_notice("Removed %d dead peers with id=%u from the membership list", matches, id);
}
return matches;
}
static void
reap_dead_nodes(gpointer key, gpointer value, gpointer user_data)
{
crm_node_t *node = value;
if (crm_is_peer_active(node) == FALSE) {
crm_update_peer_join(__FUNCTION__, node, crm_join_none);
if(node && node->uname) {
election_remove(fsa_election, node->uname);
if (safe_str_eq(fsa_our_uname, node->uname)) {
crm_err("We're not part of the cluster anymore");
register_fsa_input(C_FSA_INTERNAL, I_ERROR, NULL);
} else if (AM_I_DC == FALSE && safe_str_eq(node->uname, fsa_our_dc)) {
crm_warn("Our DC node (%s) left the cluster", node->uname);
register_fsa_input(C_FSA_INTERNAL, I_ELECTION, NULL);
}
}
if (fsa_state == S_INTEGRATION || fsa_state == S_FINALIZE_JOIN) {
check_join_state(fsa_state, __FUNCTION__);
}
fail_incompletable_actions(transition_graph, node->uuid);
}
}
static void
log_member_uname(gpointer key, gpointer value, gpointer user_data)
{
const crm_node_t *node = value;
if (crm_is_peer_active(node)) {
crm_err("%s: %s proc=%.32x", (char *)user_data, (char *)key, node->processes);
}
}
static void
join_make_offer(gpointer key, gpointer value, gpointer user_data)
{
const char *join_to = NULL;
const crm_node_t *member = value;
CRM_ASSERT(member != NULL);
if (crm_is_peer_active(member) == FALSE) {
crm_trace("Not making an offer to %s: not active", member->uname);
return;
}
join_to = member->uname;
if (join_to == NULL) {
crm_err("No recipient for welcome message");
return;
}
erase_node_from_join(join_to);
if (saved_ccm_membership_id != crm_peer_seq) {
saved_ccm_membership_id = crm_peer_seq;
crm_info("Making join offers based on membership %llu", crm_peer_seq);
}
if (crm_is_peer_active(member)) {
xmlNode *offer = create_request(CRM_OP_JOIN_OFFER, NULL, join_to,
CRM_SYSTEM_CRMD, CRM_SYSTEM_DC, NULL);
char *join_offered = crm_itoa(current_join_id);
crm_xml_add_int(offer, F_CRM_JOIN_ID, current_join_id);
/* send the welcome */
crm_debug("join-%d: Sending offer to %s", current_join_id, join_to);
send_cluster_message(join_to, crm_msg_crmd, offer, TRUE);
free_xml(offer);
g_hash_table_insert(welcomed_nodes, strdup(join_to), join_offered);
} else {
crm_info("Peer process on %s is not active (yet?): %.8lx %d",
join_to, (long)member->processes, g_hash_table_size(crm_peer_cache));
}
}
/*!
* \brief Check whether local node has won an election
*
* If all known peers have sent no-vote messages, stop the election timer, set
* the election state to won, and call any registered win callback.
*
* \param[in] e Election object
*
* \return TRUE if local node has won, FALSE otherwise
* \note If all known peers have sent no-vote messages, but the election owner
* does not call this function, the election will not be won (and the
* callback will not be called) until the election times out.
* \note This should be called when election_count_vote() returns
* \c election_in_progress.
*/
bool
election_check(election_t *e)
{
int voted_size = 0;
int num_members = 0;
if(e == NULL) {
crm_trace("Election check requested, but no election available");
return FALSE;
}
if (e->voted == NULL) {
crm_trace("%s check requested, but no votes received yet", e->name);
return FALSE;
}
voted_size = g_hash_table_size(e->voted);
num_members = crm_active_peers();
/* in the case of #voted > #members, it is better to
* wait for the timeout and give the cluster time to
* stabilize
*/
if (voted_size >= num_members) {
/* we won and everyone has voted */
election_timeout_stop(e);
if (voted_size > num_members) {
GHashTableIter gIter;
const crm_node_t *node;
char *key = NULL;
crm_warn("Received too many votes in %s", e->name);
g_hash_table_iter_init(&gIter, crm_peer_cache);
while (g_hash_table_iter_next(&gIter, NULL, (gpointer *) & node)) {
if (crm_is_peer_active(node)) {
crm_warn("* expected vote: %s", node->uname);
}
}
g_hash_table_iter_init(&gIter, e->voted);
while (g_hash_table_iter_next(&gIter, (gpointer *) & key, NULL)) {
crm_warn("* actual vote: %s", key);
}
}
crm_info("%s won by local node", e->name);
election_complete(e);
return TRUE;
} else {
crm_debug("%s still waiting on %d of %d votes",
e->name, num_members - voted_size, num_members);
}
return FALSE;
}
static void
crm_count_peer(gpointer key, gpointer value, gpointer user_data)
{
guint *count = user_data;
crm_node_t *node = value;
if (crm_is_peer_active(node)) {
*count = *count + 1;
}
}
gboolean
finalize_join_for(gpointer key, gpointer value, gpointer user_data)
{
const char *join_to = NULL;
const char *join_state = NULL;
xmlNode *acknak = NULL;
crm_node_t *join_node = NULL;
if (key == NULL || value == NULL) {
return TRUE;
}
join_to = (const char *)key;
join_state = (const char *)value;
/* make sure the node exists in the config section */
create_node_entry(join_to, join_to, NORMALNODE);
join_node = crm_get_peer(0, join_to);
if (crm_is_peer_active(join_node) == FALSE) {
/*
* NACK'ing nodes that the membership layer doesn't know about yet
* simply creates more churn
*
* Better to leave them waiting and let the join restart when
* the new membership event comes in
*
* All other NACKs (due to versions etc) should still be processed
*/
return TRUE;
}
/* send the ack/nack to the node */
acknak = create_request(CRM_OP_JOIN_ACKNAK, NULL, join_to,
CRM_SYSTEM_CRMD, CRM_SYSTEM_DC, NULL);
crm_xml_add_int(acknak, F_CRM_JOIN_ID, current_join_id);
/* set the ack/nack */
if (safe_str_eq(join_state, CRMD_JOINSTATE_MEMBER)) {
crm_debug("join-%d: ACK'ing join request from %s, state %s",
current_join_id, join_to, join_state);
crm_xml_add(acknak, CRM_OP_JOIN_ACKNAK, XML_BOOLEAN_TRUE);
g_hash_table_insert(finalized_nodes,
strdup(join_to), strdup(CRMD_JOINSTATE_MEMBER));
} else {
crm_warn("join-%d: NACK'ing join request from %s, state %s",
current_join_id, join_to, join_state);
crm_xml_add(acknak, CRM_OP_JOIN_ACKNAK, XML_BOOLEAN_FALSE);
}
send_cluster_message(join_to, crm_msg_crmd, acknak, TRUE);
free_xml(acknak);
return TRUE;
}
static void
join_make_offer(gpointer key, gpointer value, gpointer user_data)
{
xmlNode *offer = NULL;
crm_node_t *member = (crm_node_t *)value;
CRM_ASSERT(member != NULL);
if (crm_is_peer_active(member) == FALSE) {
crm_info("Not making an offer to %s: not active (%s)", member->uname, member->state);
if(member->expected == NULL && safe_str_eq(member->state, CRM_NODE_LOST)) {
/* You would think this unsafe, but in fact this plus an
* active resource is what causes it to be fenced.
*
* Yes, this does mean that any node that dies at the same
* time as the old DC and is not running resource (still)
* won't be fenced.
*
* I'm not happy about this either.
*/
crm_update_peer_expected(__FUNCTION__, member, CRMD_JOINSTATE_DOWN);
}
return;
}
if (member->uname == NULL) {
crm_err("No recipient for welcome message");
return;
}
if (saved_ccm_membership_id != crm_peer_seq) {
saved_ccm_membership_id = crm_peer_seq;
crm_info("Making join offers based on membership %llu", crm_peer_seq);
}
if(user_data && member->join > crm_join_none) {
crm_info("Skipping %s: already known %d", member->uname, member->join);
return;
}
crm_update_peer_join(__FUNCTION__, (crm_node_t*)member, crm_join_none);
offer = create_request(CRM_OP_JOIN_OFFER, NULL, member->uname,
CRM_SYSTEM_CRMD, CRM_SYSTEM_DC, NULL);
crm_xml_add_int(offer, F_CRM_JOIN_ID, current_join_id);
/* send the welcome */
crm_info("join-%d: Sending offer to %s", current_join_id, member->uname);
send_cluster_message(member, crm_msg_crmd, offer, TRUE);
free_xml(offer);
crm_update_peer_join(__FUNCTION__, member, crm_join_welcomed);
/* crm_update_peer_expected(__FUNCTION__, member, CRMD_JOINSTATE_PENDING); */
}
void
finalize_join_for(gpointer key, gpointer value, gpointer user_data)
{
xmlNode *acknak = NULL;
xmlNode *tmp1 = NULL;
crm_node_t *join_node = value;
const char *join_to = join_node->uname;
if(join_node->join != crm_join_integrated) {
crm_trace("Skipping %s in state %d", join_to, join_node->join);
return;
}
/* make sure a node entry exists for the new node */
crm_trace("Creating node entry for %s", join_to);
tmp1 = create_xml_node(NULL, XML_CIB_TAG_NODE);
set_uuid(tmp1, XML_ATTR_UUID, join_node);
crm_xml_add(tmp1, XML_ATTR_UNAME, join_to);
fsa_cib_anon_update(XML_CIB_TAG_NODES, tmp1,
cib_scope_local | cib_quorum_override | cib_can_create);
free_xml(tmp1);
join_node = crm_get_peer(0, join_to);
if (crm_is_peer_active(join_node) == FALSE) {
/*
* NACK'ing nodes that the membership layer doesn't know about yet
* simply creates more churn
*
* Better to leave them waiting and let the join restart when
* the new membership event comes in
*
* All other NACKs (due to versions etc) should still be processed
*/
crm_update_peer_expected(__FUNCTION__, join_node, CRMD_JOINSTATE_PENDING);
return;
}
/* send the ack/nack to the node */
acknak = create_request(CRM_OP_JOIN_ACKNAK, NULL, join_to,
CRM_SYSTEM_CRMD, CRM_SYSTEM_DC, NULL);
crm_xml_add_int(acknak, F_CRM_JOIN_ID, current_join_id);
crm_debug("join-%d: ACK'ing join request from %s",
current_join_id, join_to);
crm_xml_add(acknak, CRM_OP_JOIN_ACKNAK, XML_BOOLEAN_TRUE);
crm_update_peer_join(__FUNCTION__, join_node, crm_join_finalized);
crm_update_peer_expected(__FUNCTION__, join_node, CRMD_JOINSTATE_MEMBER);
send_cluster_message(crm_get_peer(0, join_to), crm_msg_crmd, acknak, TRUE);
free_xml(acknak);
return;
}
void
do_election_check(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
int voted_size = 0;
int num_members = crm_active_peers();
if (voted) {
voted_size = g_hash_table_size(voted);
}
/* in the case of #voted > #members, it is better to
* wait for the timeout and give the cluster time to
* stabilize
*/
if (fsa_state != S_ELECTION) {
crm_debug("Ignore election check: we not in an election");
} else if (voted_size >= num_members) {
/* we won and everyone has voted */
crm_timer_stop(election_timeout);
register_fsa_input(C_FSA_INTERNAL, I_ELECTION_DC, NULL);
if (voted_size > num_members) {
GHashTableIter gIter;
const crm_node_t *node;
char *key = NULL;
g_hash_table_iter_init(&gIter, crm_peer_cache);
while (g_hash_table_iter_next(&gIter, NULL, (gpointer *) & node)) {
if (crm_is_peer_active(node)) {
crm_err("member: %s proc=%.32x", node->uname, node->processes);
}
}
g_hash_table_iter_init(&gIter, voted);
while (g_hash_table_iter_next(&gIter, (gpointer *) & key, NULL)) {
crm_err("voted: %s", key);
}
}
crm_debug("Destroying voted hash");
g_hash_table_destroy(voted);
voted = NULL;
} else {
crm_debug("Still waiting on %d non-votes (%d total)",
num_members - voted_size, num_members);
}
return;
}
bool
election_check(election_t *e)
{
int voted_size = 0;
int num_members = crm_active_peers();
if(e == NULL) {
crm_trace("not initialized");
return FALSE;
}
if (e->voted) {
voted_size = g_hash_table_size(e->voted);
}
/* in the case of #voted > #members, it is better to
* wait for the timeout and give the cluster time to
* stabilize
*/
if (voted_size >= num_members) {
/* we won and everyone has voted */
election_timeout_stop(e);
if (voted_size > num_members) {
GHashTableIter gIter;
const crm_node_t *node;
char *key = NULL;
g_hash_table_iter_init(&gIter, crm_peer_cache);
while (g_hash_table_iter_next(&gIter, NULL, (gpointer *) & node)) {
if (crm_is_peer_active(node)) {
crm_err("member: %s proc=%.32x", node->uname, node->processes);
}
}
g_hash_table_iter_init(&gIter, e->voted);
while (g_hash_table_iter_next(&gIter, (gpointer *) & key, NULL)) {
crm_err("voted: %s", key);
}
}
/* ELECTION完了処理 */
election_complete(e);
return TRUE;
} else {
crm_debug("Still waiting on %d non-votes (%d total)",
num_members - voted_size, num_members);
}
return FALSE;
}
static gboolean
crm_reap_dead_member(gpointer key, gpointer value, gpointer user_data)
{
crm_node_t *node = value;
crm_node_t *search = user_data;
if (search != NULL && node->id != search->id) {
return FALSE;
} else if (crm_is_peer_active(value) == FALSE) {
crm_notice("Removing %s/%u from the membership list", node->uname, node->id);
return TRUE;
}
return FALSE;
}
static void
join_make_offer(gpointer key, gpointer value, gpointer user_data)
{
xmlNode *offer = NULL;
crm_node_t *member = (crm_node_t *)value;
CRM_ASSERT(member != NULL);
if (crm_is_peer_active(member) == FALSE) {
crm_info("Not making an offer to %s: not active (%s)", member->uname, member->state);
if(member->expected == NULL && safe_str_eq(member->state, CRM_NODE_LOST)) {
crm_update_peer_expected(__FUNCTION__, member, CRMD_JOINSTATE_DOWN);
}
return;
}
if (member->uname == NULL) {
crm_err("No recipient for welcome message");
return;
}
if (saved_ccm_membership_id != crm_peer_seq) {
saved_ccm_membership_id = crm_peer_seq;
crm_info("Making join offers based on membership %llu", crm_peer_seq);
}
if(user_data && member->join > crm_join_none) {
crm_info("Skipping %s: already known %d", member->uname, member->join);
return;
}
crm_update_peer_join(__FUNCTION__, (crm_node_t*)member, crm_join_none);
offer = create_request(CRM_OP_JOIN_OFFER, NULL, member->uname,
CRM_SYSTEM_CRMD, CRM_SYSTEM_DC, NULL);
crm_xml_add_int(offer, F_CRM_JOIN_ID, current_join_id);
/* send the welcome */
crm_info("join-%d: Sending offer to %s", current_join_id, member->uname);
send_cluster_message(member, crm_msg_crmd, offer, TRUE);
free_xml(offer);
crm_update_peer_join(__FUNCTION__, member, crm_join_welcomed);
/* crm_update_peer_expected(__FUNCTION__, member, CRMD_JOINSTATE_PENDING); */
}
/* ELECTION投票処理 */
void
election_vote(election_t *e)
{
struct timeval age;
xmlNode *vote = NULL;
crm_node_t *our_node;
if(e == NULL) {
crm_trace("Not voting in election: not initialized");
return;
}
our_node = crm_get_peer(0, e->uname);
if (our_node == NULL || crm_is_peer_active(our_node) == FALSE) {
crm_trace("Cannot vote yet: %p", our_node);
return;
}
/* 自ノードの情報を生成する */
e->state = election_in_progress;
/* CRM_OP_VOTE(F_ATTRD_TASKフィールド)メッセージを生成する */
vote = create_request(CRM_OP_VOTE, NULL, NULL, CRM_SYSTEM_CRMD, CRM_SYSTEM_CRMD, NULL);
e->count++;
crm_xml_add(vote, F_CRM_ELECTION_OWNER, our_node->uuid);
crm_xml_add_int(vote, F_CRM_ELECTION_ID, e->count);
crm_uptime(&age);
crm_xml_add_int(vote, F_CRM_ELECTION_AGE_S, age.tv_sec);
crm_xml_add_int(vote, F_CRM_ELECTION_AGE_US, age.tv_usec);
/* クラスタに投票メッセージを送信する */
send_cluster_message(NULL, crm_msg_crmd, vote, TRUE);
free_xml(vote);
crm_debug("Started election %d", e->count);
if (e->voted) {
g_hash_table_destroy(e->voted);
e->voted = NULL;
}
/* ELECTIONのタイマーを開始する */
election_timeout_start(e);
return;
}
guint
reap_crm_member(uint32_t id, const char *name)
{
int matches = 0;
crm_node_t *node = NULL;
if(crm_peer_cache == NULL || crm_peer_id_cache == NULL) {
crm_trace("Nothing to do, cache not initialized");
return 0;
}
if (name) {
node = g_hash_table_lookup(crm_peer_cache, name);
}
if (node == NULL && id > 0) {
node = g_hash_table_lookup(crm_peer_id_cache, GUINT_TO_POINTER(id));
}
if (node == NULL) {
crm_info("Peer %u/%s cannot be purged: does not exist", id, name);
return 0;
}
if (crm_is_peer_active(node)) {
crm_warn("Peer %u/%s cannot be purged: still active", id, name);
} else {
if (g_hash_table_remove(crm_peer_id_cache, GUINT_TO_POINTER(id))) {
crm_notice("Purged dead peer %u/%s from the uuid cache", id, name);
} else if(id) {
crm_warn("Peer %u/%s was not found in the ID cache", id, name);
}
matches = g_hash_table_foreach_remove(crm_peer_cache, crm_reap_dead_member, node);
crm_notice("Purged %d dead peers with id=%u from the membership cache", matches, id);
}
return matches;
}
/*!
* \brief Start a new election by offering local node's candidacy
*
* Broadcast a "vote" election message containing the local node's ID,
* (incremented) election counter, and uptime, and start the election timer.
*
* \param[in] e Election object
* \note Any nodes agreeing to the candidacy will send a "no-vote" reply, and if
* all active peers do so, or if the election times out, the local node
* wins the election. (If we lose to any peer vote, we will stop the
* timer, so a timeout means we did not lose -- either some peer did not
* vote, or we did not call election_check() in time.)
*/
void
election_vote(election_t *e)
{
struct timeval age;
xmlNode *vote = NULL;
crm_node_t *our_node;
if (e == NULL) {
crm_trace("Election vote requested, but no election available");
return;
}
our_node = crm_get_peer(0, e->uname);
if ((our_node == NULL) || (crm_is_peer_active(our_node) == FALSE)) {
crm_trace("Cannot vote in %s yet: local node not connected to cluster",
e->name);
return;
}
election_reset(e);
e->state = election_in_progress;
vote = create_request(CRM_OP_VOTE, NULL, NULL, CRM_SYSTEM_CRMD, CRM_SYSTEM_CRMD, NULL);
e->count++;
crm_xml_add(vote, F_CRM_ELECTION_OWNER, our_node->uuid);
crm_xml_add_int(vote, F_CRM_ELECTION_ID, e->count);
crm_uptime(&age);
crm_xml_add_int(vote, F_CRM_ELECTION_AGE_S, age.tv_sec);
crm_xml_add_int(vote, F_CRM_ELECTION_AGE_US, age.tv_usec);
send_cluster_message(NULL, crm_msg_crmd, vote, TRUE);
free_xml(vote);
crm_debug("Started %s round %d", e->name, e->count);
election_timeout_start(e);
return;
}
/* A_DC_JOIN_OFFER_ONE */
void
do_dc_join_offer_one(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
crm_node_t *member;
ha_msg_input_t *welcome = NULL;
const char *op = NULL;
const char *join_to = NULL;
if (msg_data->data) {
welcome = fsa_typed_data(fsa_dt_ha_msg);
} else {
crm_info("A new node joined - wait until it contacts us");
return;
}
if (welcome == NULL) {
crm_err("Attempt to send welcome message without a message to reply to!");
return;
}
join_to = crm_element_value(welcome->msg, F_CRM_HOST_FROM);
if (join_to == NULL) {
crm_err("Attempt to send welcome message without a host to reply to!");
return;
}
member = crm_get_peer(0, join_to);
if (crm_is_peer_active(member) == FALSE) {
crm_err("%s is not a fully active member of our partition", join_to);
return;
}
op = crm_element_value(welcome->msg, F_CRM_TASK);
if (join_to != NULL && (cur_state == S_INTEGRATION || cur_state == S_FINALIZE_JOIN)) {
/* note: it _is_ possible that a node will have been
* sick or starting up when the original offer was made.
* however, it will either re-announce itself in due course
* _or_ we can re-store the original offer on the client.
*/
crm_trace("(Re-)offering membership to %s...", join_to);
}
crm_info("join-%d: Processing %s request from %s in state %s",
current_join_id, op, join_to, fsa_state2string(cur_state));
join_make_offer(NULL, member, NULL);
/* always offer to the DC (ourselves)
* this ensures the correct value for max_generation_from
*/
member = crm_get_peer(0, fsa_our_uname);
join_make_offer(NULL, member, NULL);
/* this was a genuine join request, cancel any existing
* transition and invoke the PE
*/
start_transition(fsa_state);
/* dont waste time by invoking the pe yet; */
crm_debug("Waiting on %d outstanding join acks for join-%d",
g_hash_table_size(welcomed_nodes), current_join_id);
}
void
pcmk_cpg_membership(cpg_handle_t handle,
const struct cpg_name *groupName,
const struct cpg_address *member_list, size_t member_list_entries,
const struct cpg_address *left_list, size_t left_list_entries,
const struct cpg_address *joined_list, size_t joined_list_entries)
{
int i;
gboolean found = FALSE;
static int counter = 0;
uint32_t local_nodeid = get_local_nodeid(handle);
for (i = 0; i < left_list_entries; i++) {
crm_node_t *peer = crm_find_peer(left_list[i].nodeid, NULL);
crm_info("Node %u left group %s (peer=%s, counter=%d.%d)",
left_list[i].nodeid, groupName->value,
(peer? peer->uname : "<none>"), counter, i);
if (peer) {
crm_update_peer_proc(__FUNCTION__, peer, crm_proc_cpg, OFFLINESTATUS);
}
}
for (i = 0; i < joined_list_entries; i++) {
crm_info("Node %u joined group %s (counter=%d.%d)",
joined_list[i].nodeid, groupName->value, counter, i);
}
for (i = 0; i < member_list_entries; i++) {
crm_node_t *peer = crm_get_peer(member_list[i].nodeid, NULL);
crm_info("Node %u still member of group %s (peer=%s, counter=%d.%d)",
member_list[i].nodeid, groupName->value,
(peer? peer->uname : "<none>"), counter, i);
/* Anyone that is sending us CPG messages must also be a _CPG_ member.
* But it's _not_ safe to assume it's in the quorum membership.
* We may have just found out it's dead and are processing the last couple of messages it sent
*/
peer = crm_update_peer_proc(__FUNCTION__, peer, crm_proc_cpg, ONLINESTATUS);
if(peer && peer->state && crm_is_peer_active(peer) == FALSE) {
time_t now = time(NULL);
/* Co-opt the otherwise unused votes field */
if(peer->votes == 0) {
peer->votes = now;
} else if(now > (60 + peer->votes)) {
/* On the otherhand, if we're still getting messages, at a certain point
* we need to acknowledge our internal cache is probably wrong
*
* Set the threshold to 1 minute
*/
crm_err("Node %s[%u] appears to be online even though we think it is dead", peer->uname, peer->id);
if (crm_update_peer_state(__FUNCTION__, peer, CRM_NODE_MEMBER, 0)) {
peer->votes = 0;
}
}
}
if (local_nodeid == member_list[i].nodeid) {
found = TRUE;
}
}
if (!found) {
crm_err("We're not part of CPG group '%s' anymore!", groupName->value);
cpg_evicted = TRUE;
}
counter++;
}
void
peer_update_callback(enum crm_status_type type, crm_node_t * node, const void *data)
{
uint32_t old = 0;
uint32_t changed = 0;
bool appeared = FALSE;
const char *status = NULL;
set_bit(fsa_input_register, R_PEER_DATA);
if (node->uname == NULL) {
return;
}
switch (type) {
case crm_status_uname:
/* If we've never seen the node, then it also wont be in the status section */
crm_info("%s is now %s", node->uname, node->state);
return;
case crm_status_rstate:
crm_info("Remote node %s is now %s (was %s)", node->uname, node->state, (const char *)data);
/* Keep going */
case crm_status_nstate:
crm_info("%s is now %s (was %s)", node->uname, node->state, (const char *)data);
if (safe_str_eq(data, node->state)) {
/* State did not change */
return;
} else if(safe_str_eq(CRM_NODE_MEMBER, node->state)) {
appeared = TRUE;
}
break;
case crm_status_processes:
if (data) {
old = *(const uint32_t *)data;
changed = node->processes ^ old;
}
/* crmd_proc_update(node, proc_flags); */
status = (node->processes & proc_flags) ? ONLINESTATUS : OFFLINESTATUS;
crm_info("Client %s/%s now has status [%s] (DC=%s, changed=%6x)",
node->uname, peer2text(proc_flags), status,
AM_I_DC ? "true" : crm_str(fsa_our_dc), changed);
if ((changed & proc_flags) == 0) {
/* Peer process did not change */
crm_trace("No change %6x %6x %6x", old, node->processes, proc_flags);
return;
} else if (is_not_set(fsa_input_register, R_CIB_CONNECTED)) {
crm_trace("Not connected");
return;
} else if (fsa_state == S_STOPPING) {
crm_trace("Stopping");
return;
}
appeared = (node->processes & proc_flags) != 0;
if (safe_str_eq(node->uname, fsa_our_uname) && (node->processes & proc_flags) == 0) {
/* Did we get evicted? */
crm_notice("Our peer connection failed");
register_fsa_input(C_CRMD_STATUS_CALLBACK, I_ERROR, NULL);
} else if (safe_str_eq(node->uname, fsa_our_dc) && crm_is_peer_active(node) == FALSE) {
/* Did the DC leave us? */
crm_notice("Our peer on the DC (%s) is dead", fsa_our_dc);
register_fsa_input(C_CRMD_STATUS_CALLBACK, I_ELECTION, NULL);
} else if(AM_I_DC && appeared == FALSE) {
crm_info("Peer %s left us", node->uname);
/* crm_update_peer_join(__FUNCTION__, node, crm_join_none); */
}
break;
}
if (AM_I_DC) {
xmlNode *update = NULL;
int flags = node_update_peer;
gboolean alive = crm_is_peer_active(node);
crm_action_t *down = match_down_event(0, node->uuid, NULL, appeared);
crm_trace("Alive=%d, appear=%d, down=%p", alive, appeared, down);
if (alive && type == crm_status_processes) {
register_fsa_input_before(C_FSA_INTERNAL, I_NODE_JOIN, NULL);
}
if (down) {
const char *task = crm_element_value(down->xml, XML_LRM_ATTR_TASK);
if (alive && safe_str_eq(task, CRM_OP_FENCE)) {
crm_info("Node return implies stonith of %s (action %d) completed", node->uname,
down->id);
erase_status_tag(node->uname, XML_CIB_TAG_LRM, cib_scope_local);
erase_status_tag(node->uname, XML_TAG_TRANSIENT_NODEATTRS, cib_scope_local);
/* down->confirmed = TRUE; Only stonith-ng returning should imply completion */
down->sent_update = TRUE; /* Prevent tengine_stonith_callback() from calling send_stonith_update() */
} else if (safe_str_eq(task, CRM_OP_FENCE)) {
crm_trace("Waiting for stonithd to report the fencing of %s is complete", node->uname); /* via tengine_stonith_callback() */
} else if (alive == FALSE) {
crm_notice("%s of %s (op %d) is complete", task, node->uname, down->id);
/* down->confirmed = TRUE; Only stonith-ng returning should imply completion */
stop_te_timer(down->timer);
flags |= node_update_join | node_update_expected;
crmd_peer_down(node, FALSE);
check_join_state(fsa_state, __FUNCTION__);
update_graph(transition_graph, down);
trigger_graph();
} else {
crm_trace("Other %p", down);
}
} else if (appeared == FALSE) {
crm_notice("Stonith/shutdown of %s not matched", node->uname);
crm_update_peer_join(__FUNCTION__, node, crm_join_none);
check_join_state(fsa_state, __FUNCTION__);
abort_transition(INFINITY, tg_restart, "Node failure", NULL);
fail_incompletable_actions(transition_graph, node->uuid);
} else {
crm_trace("Other %p", down);
}
update = do_update_node_cib(node, flags, NULL, __FUNCTION__);
fsa_cib_anon_update(XML_CIB_TAG_STATUS, update,
cib_scope_local | cib_quorum_override | cib_can_create);
free_xml(update);
}
trigger_fsa(fsa_source);
}
void
peer_update_callback(enum crm_status_type type, crm_node_t * node, const void *data)
{
uint32_t old = 0;
uint32_t changed = 0;
bool appeared = FALSE;
bool is_remote = is_set(node->flags, crm_remote_node);
const char *status = NULL;
/* Crmd waits to receive some information from the membership layer before
* declaring itself operational. If this is being called for a cluster node,
* indicate that we have it.
*/
if (!is_remote) {
set_bit(fsa_input_register, R_PEER_DATA);
}
if (node->uname == NULL) {
return;
}
switch (type) {
case crm_status_uname:
/* If we've never seen the node, then it also won't be in the status section */
crm_info("%s node %s is now %s",
(is_remote? "Remote" : "Cluster"),
node->uname, state_text(node->state));
return;
case crm_status_rstate:
case crm_status_nstate:
/* This callback should not be called unless the state actually
* changed, but here's a failsafe just in case.
*/
CRM_CHECK(safe_str_neq(data, node->state), return);
crm_info("%s node %s is now %s (was %s)",
(is_remote? "Remote" : "Cluster"),
node->uname, state_text(node->state), state_text(data));
if (safe_str_eq(CRM_NODE_MEMBER, node->state)) {
appeared = TRUE;
if (!is_remote) {
remove_stonith_cleanup(node->uname);
}
}
crmd_alert_node_event(node);
break;
case crm_status_processes:
if (data) {
old = *(const uint32_t *)data;
changed = node->processes ^ old;
}
status = (node->processes & proc_flags) ? ONLINESTATUS : OFFLINESTATUS;
crm_info("Client %s/%s now has status [%s] (DC=%s, changed=%6x)",
node->uname, peer2text(proc_flags), status,
AM_I_DC ? "true" : crm_str(fsa_our_dc), changed);
if ((changed & proc_flags) == 0) {
/* Peer process did not change */
crm_trace("No change %6x %6x %6x", old, node->processes, proc_flags);
return;
} else if (is_not_set(fsa_input_register, R_CIB_CONNECTED)) {
crm_trace("Not connected");
return;
} else if (fsa_state == S_STOPPING) {
crm_trace("Stopping");
return;
}
appeared = (node->processes & proc_flags) != 0;
if (safe_str_eq(node->uname, fsa_our_uname) && (node->processes & proc_flags) == 0) {
/* Did we get evicted? */
crm_notice("Our peer connection failed");
register_fsa_input(C_CRMD_STATUS_CALLBACK, I_ERROR, NULL);
} else if (safe_str_eq(node->uname, fsa_our_dc) && crm_is_peer_active(node) == FALSE) {
/* Did the DC leave us? */
crm_notice("Our peer on the DC (%s) is dead", fsa_our_dc);
register_fsa_input(C_CRMD_STATUS_CALLBACK, I_ELECTION, NULL);
/* @COMPAT DC < 1.1.13: If a DC shuts down normally, we don't
* want to fence it. Newer DCs will send their shutdown request
* to all peers, who will update the DC's expected state to
* down, thus avoiding fencing. We can safely erase the DC's
* transient attributes when it leaves in that case. However,
* the only way to avoid fencing older DCs is to leave the
* transient attributes intact until it rejoins.
*/
if (compare_version(fsa_our_dc_version, "3.0.9") > 0) {
erase_status_tag(node->uname, XML_TAG_TRANSIENT_NODEATTRS, cib_scope_local);
}
} else if(AM_I_DC && appeared == FALSE) {
crm_info("Peer %s left us", node->uname);
erase_status_tag(node->uname, XML_TAG_TRANSIENT_NODEATTRS, cib_scope_local);
}
break;
}
if (AM_I_DC) {
xmlNode *update = NULL;
int flags = node_update_peer;
gboolean alive = is_remote? appeared : crm_is_peer_active(node);
crm_action_t *down = match_down_event(node->uuid, appeared);
crm_trace("Alive=%d, appeared=%d, down=%d",
alive, appeared, (down? down->id : -1));
if (alive && type == crm_status_processes) {
register_fsa_input_before(C_FSA_INTERNAL, I_NODE_JOIN, NULL);
}
if (down) {
const char *task = crm_element_value(down->xml, XML_LRM_ATTR_TASK);
if (safe_str_eq(task, CRM_OP_FENCE)) {
/* tengine_stonith_callback() confirms fence actions */
crm_trace("Updating CIB %s stonithd reported fencing of %s complete",
(down->confirmed? "after" : "before"), node->uname);
} else if ((alive == FALSE) && safe_str_eq(task, CRM_OP_SHUTDOWN)) {
crm_notice("%s of peer %s is complete "CRM_XS" op=%d",
task, node->uname, down->id);
/* down->confirmed = TRUE; */
stop_te_timer(down->timer);
if (!is_remote) {
flags |= node_update_join | node_update_expected;
crmd_peer_down(node, FALSE);
check_join_state(fsa_state, __FUNCTION__);
}
update_graph(transition_graph, down);
trigger_graph();
} else {
crm_trace("Node %s is %salive, was expected to %s (op %d)",
node->uname, (alive? "" : "not "), task, down->id);
}
} else if (appeared == FALSE) {
crm_notice("Stonith/shutdown of %s not matched", node->uname);
if (!is_remote) {
crm_update_peer_join(__FUNCTION__, node, crm_join_none);
check_join_state(fsa_state, __FUNCTION__);
}
abort_transition(INFINITY, tg_restart, "Node failure", NULL);
fail_incompletable_actions(transition_graph, node->uuid);
} else {
crm_trace("Node %s came up, was not expected to be down",
node->uname);
}
if (is_remote) {
/* A pacemaker_remote node won't have its cluster status updated
* in the CIB by membership-layer callbacks, so do it here.
*/
flags |= node_update_cluster;
/* Trigger resource placement on newly integrated nodes */
if (appeared) {
abort_transition(INFINITY, tg_restart,
"pacemaker_remote node integrated", NULL);
}
}
/* Update the CIB node state */
update = create_node_state_update(node, flags, NULL, __FUNCTION__);
fsa_cib_anon_update(XML_CIB_TAG_STATUS, update,
cib_scope_local | cib_quorum_override | cib_can_create);
free_xml(update);
}
trigger_fsa(fsa_source);
}
/* A_DC_JOIN_PROCESS_REQ */
void
do_dc_join_filter_offer(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
xmlNode *generation = NULL;
int cmp = 0;
int join_id = -1;
gboolean ack_nack_bool = TRUE;
const char *ack_nack = CRMD_JOINSTATE_MEMBER;
ha_msg_input_t *join_ack = fsa_typed_data(fsa_dt_ha_msg);
const char *join_from = crm_element_value(join_ack->msg, F_CRM_HOST_FROM);
const char *ref = crm_element_value(join_ack->msg, F_CRM_REFERENCE);
crm_node_t *join_node = crm_get_peer(0, join_from);
crm_debug("Processing req from %s", join_from);
generation = join_ack->xml;
crm_element_value_int(join_ack->msg, F_CRM_JOIN_ID, &join_id);
if (max_generation_xml != NULL && generation != NULL) {
int lpc = 0;
const char *attributes[] = {
XML_ATTR_GENERATION_ADMIN,
XML_ATTR_GENERATION,
XML_ATTR_NUMUPDATES,
};
for (lpc = 0; cmp == 0 && lpc < DIMOF(attributes); lpc++) {
cmp = compare_int_fields(max_generation_xml, generation, attributes[lpc]);
}
}
if (join_id != current_join_id) {
crm_debug("Invalid response from %s: join-%d vs. join-%d",
join_from, join_id, current_join_id);
check_join_state(cur_state, __FUNCTION__);
return;
} else if (join_node == NULL || crm_is_peer_active(join_node) == FALSE) {
crm_err("Node %s is not a member", join_from);
ack_nack_bool = FALSE;
} else if (generation == NULL) {
crm_err("Generation was NULL");
ack_nack_bool = FALSE;
} else if (max_generation_xml == NULL) {
max_generation_xml = copy_xml(generation);
max_generation_from = strdup(join_from);
} else if (cmp < 0 || (cmp == 0 && safe_str_eq(join_from, fsa_our_uname))) {
crm_debug("%s has a better generation number than"
" the current max %s", join_from, max_generation_from);
if (max_generation_xml) {
crm_log_xml_debug(max_generation_xml, "Max generation");
}
crm_log_xml_debug(generation, "Their generation");
free(max_generation_from);
free_xml(max_generation_xml);
max_generation_from = strdup(join_from);
max_generation_xml = copy_xml(join_ack->xml);
}
if (ack_nack_bool == FALSE) {
/* NACK this client */
ack_nack = CRMD_JOINSTATE_NACK;
crm_update_peer_join(__FUNCTION__, join_node, crm_join_nack);
crm_err("Rejecting cluster join request from %s " CRM_XS
" NACK join-%d ref=%s", join_from, join_id, ref);
} else {
crm_debug("join-%d: Welcoming node %s (ref %s)", join_id, join_from, ref);
crm_update_peer_join(__FUNCTION__, join_node, crm_join_integrated);
}
crm_update_peer_expected(__FUNCTION__, join_node, ack_nack);
crm_debug("%u nodes have been integrated into join-%d",
crmd_join_phase_count(crm_join_integrated), join_id);
if (check_join_state(cur_state, __FUNCTION__) == FALSE) {
/* don't waste time by invoking the PE yet; */
crm_debug("join-%d: Still waiting on %d outstanding offers",
join_id, crmd_join_phase_count(crm_join_welcomed));
}
}
/* A_ELECTION_COUNT */
enum election_result
election_count_vote(election_t *e, xmlNode *vote, bool can_win)
{
int age = 0;
int election_id = -1;
int log_level = LOG_INFO;
gboolean use_born_on = FALSE;
gboolean done = FALSE;
gboolean we_loose = FALSE;
const char *op = NULL;
const char *from = NULL;
const char *reason = "unknown";
const char *election_owner = NULL;
crm_node_t *our_node = NULL, *your_node = NULL;
static int election_wins = 0;
xmlNode *novote = NULL;
time_t tm_now = time(NULL);
static time_t expires = 0;
static time_t last_election_loss = 0;
/* if the membership copy is NULL we REALLY shouldn't be voting
* the question is how we managed to get here.
*/
CRM_CHECK(vote != NULL, return election_error);
if(e == NULL) {
crm_info("Not voting in election: not initialized");
return election_lost;
} else if(crm_peer_cache == NULL) {
crm_info("Not voting in election: no peer cache");
return election_lost;
}
op = crm_element_value(vote, F_CRM_TASK);
from = crm_element_value(vote, F_CRM_HOST_FROM);
election_owner = crm_element_value(vote, F_CRM_ELECTION_OWNER);
crm_element_value_int(vote, F_CRM_ELECTION_ID, &election_id);
your_node = crm_get_peer(0, from);
our_node = crm_get_peer(0, e->uname);
if (e->voted == NULL) {
crm_debug("Created voted hash");
e->voted = g_hash_table_new_full(crm_str_hash, g_str_equal,
g_hash_destroy_str, g_hash_destroy_str);
}
if (is_heartbeat_cluster()) {
use_born_on = TRUE;
} else if (is_classic_ais_cluster()) {
use_born_on = TRUE;
}
if(can_win == FALSE) {
reason = "Not eligible";
we_loose = TRUE;
} else if (our_node == NULL || crm_is_peer_active(our_node) == FALSE) {
reason = "We are not part of the cluster";
log_level = LOG_ERR;
we_loose = TRUE;
} else if (election_id != e->count && crm_str_eq(our_node->uuid, election_owner, TRUE)) {
log_level = LOG_TRACE;
reason = "Superseded";
done = TRUE;
} else if (your_node == NULL || crm_is_peer_active(your_node) == FALSE) {
/* Possibly we cached the message in the FSA queue at a point that it wasn't */
reason = "Peer is not part of our cluster";
log_level = LOG_WARNING;
done = TRUE;
} else if (crm_str_eq(op, CRM_OP_NOVOTE, TRUE)) {
char *op_copy = strdup(op);
char *uname_copy = strdup(from);
CRM_ASSERT(crm_str_eq(our_node->uuid, election_owner, TRUE));
/* update the list of nodes that have voted */
g_hash_table_replace(e->voted, uname_copy, op_copy);
reason = "Recorded";
done = TRUE;
} else {
struct timeval your_age;
const char *your_version = crm_element_value(vote, F_CRM_VERSION);
int tv_sec = 0;
int tv_usec = 0;
crm_element_value_int(vote, F_CRM_ELECTION_AGE_S, &tv_sec);
crm_element_value_int(vote, F_CRM_ELECTION_AGE_US, &tv_usec);
your_age.tv_sec = tv_sec;
your_age.tv_usec = tv_usec;
age = crm_compare_age(your_age);
if (crm_str_eq(from, e->uname, TRUE)) {
char *op_copy = strdup(op);
char *uname_copy = strdup(from);
CRM_ASSERT(crm_str_eq(our_node->uuid, election_owner, TRUE));
/* update ourselves in the list of nodes that have voted */
g_hash_table_replace(e->voted, uname_copy, op_copy);
reason = "Recorded";
done = TRUE;
} else if (compare_version(your_version, CRM_FEATURE_SET) < 0) {
reason = "Version";
we_loose = TRUE;
} else if (compare_version(your_version, CRM_FEATURE_SET) > 0) {
reason = "Version";
} else if (age < 0) {
reason = "Uptime";
we_loose = TRUE;
} else if (age > 0) {
reason = "Uptime";
/* TODO: Check for y(our) born < 0 */
} else if (use_born_on && your_node->born < our_node->born) {
reason = "Born";
we_loose = TRUE;
} else if (use_born_on && your_node->born > our_node->born) {
reason = "Born";
} else if (e->uname == NULL) {
reason = "Unknown host name";
we_loose = TRUE;
} else if (strcasecmp(e->uname, from) > 0) {
reason = "Host name";
we_loose = TRUE;
} else {
reason = "Host name";
CRM_ASSERT(strcasecmp(e->uname, from) < 0);
/* can't happen...
* } else if(strcasecmp(e->uname, from) == 0) {
*
*/
}
}
if (expires < tm_now) {
election_wins = 0;
expires = tm_now + STORM_INTERVAL;
} else if (done == FALSE && we_loose == FALSE) {
int peers = 1 + g_hash_table_size(crm_peer_cache);
/* If every node has to vote down every other node, thats N*(N-1) total elections
* Allow some leway before _really_ complaining
*/
election_wins++;
if (election_wins > (peers * peers)) {
crm_warn("Election storm detected: %d elections in %d seconds", election_wins,
STORM_INTERVAL);
election_wins = 0;
expires = tm_now + STORM_INTERVAL;
crm_write_blackbox(0, NULL);
}
}
if (done) {
do_crm_log(log_level + 1, "Election %d (current: %d, owner: %s): Processed %s from %s (%s)",
election_id, e->count, election_owner, op, from, reason);
return e->state;
} else if(we_loose == FALSE) {
do_crm_log(log_level, "Election %d (owner: %s) pass: %s from %s (%s)",
election_id, election_owner, op, from, reason);
if (last_election_loss == 0
|| tm_now - last_election_loss > (time_t) loss_dampen) {
last_election_loss = 0;
election_timeout_stop(e);
/* Start a new election by voting down this, and other, peers */
e->state = election_start;
return e->state;
}
crm_info("Election %d ignore: We already lost an election less than %ds ago (%s)",
election_id, loss_dampen, ctime(&last_election_loss));
}
novote = create_request(CRM_OP_NOVOTE, NULL, from,
CRM_SYSTEM_CRMD, CRM_SYSTEM_CRMD, NULL);
do_crm_log(log_level, "Election %d (owner: %s) lost: %s from %s (%s)",
election_id, election_owner, op, from, reason);
election_timeout_stop(e);
crm_xml_add(novote, F_CRM_ELECTION_OWNER, election_owner);
crm_xml_add_int(novote, F_CRM_ELECTION_ID, election_id);
send_cluster_message(your_node, crm_msg_crmd, novote, TRUE);
free_xml(novote);
last_election_loss = tm_now;
e->state = election_lost;
return e->state;
}
/* A_ELECTION_COUNT */
void
do_election_count_vote(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
struct timeval your_age;
int age;
int election_id = -1;
int log_level = LOG_INFO;
gboolean use_born_on = FALSE;
gboolean done = FALSE;
gboolean we_loose = FALSE;
const char *op = NULL;
const char *vote_from = NULL;
const char *your_version = NULL;
const char *election_owner = NULL;
const char *reason = "unknown";
crm_node_t *our_node = NULL, *your_node = NULL;
ha_msg_input_t *vote = fsa_typed_data(fsa_dt_ha_msg);
static time_t last_election_loss = 0;
/* if the membership copy is NULL we REALLY shouldnt be voting
* the question is how we managed to get here.
*/
CRM_CHECK(msg_data != NULL, return);
CRM_CHECK(crm_peer_cache != NULL, return);
CRM_CHECK(vote != NULL, crm_err("Bogus data from %s", msg_data->origin); return);
CRM_CHECK(vote->msg != NULL, crm_err("Bogus data from %s", msg_data->origin); return);
your_age.tv_sec = 0;
your_age.tv_usec = 0;
op = crm_element_value(vote->msg, F_CRM_TASK);
vote_from = crm_element_value(vote->msg, F_CRM_HOST_FROM);
your_version = crm_element_value(vote->msg, F_CRM_VERSION);
election_owner = crm_element_value(vote->msg, F_CRM_ELECTION_OWNER);
crm_element_value_int(vote->msg, F_CRM_ELECTION_ID, &election_id);
crm_element_value_int(vote->msg, F_CRM_ELECTION_AGE_S, (int *)&(your_age.tv_sec));
crm_element_value_int(vote->msg, F_CRM_ELECTION_AGE_US, (int *)&(your_age.tv_usec));
CRM_CHECK(vote_from != NULL, vote_from = fsa_our_uname);
your_node = crm_get_peer(0, vote_from);
our_node = crm_get_peer(0, fsa_our_uname);
if (voted == NULL) {
crm_debug("Created voted hash");
voted = g_hash_table_new_full(crm_str_hash, g_str_equal,
g_hash_destroy_str, g_hash_destroy_str);
}
if (is_heartbeat_cluster()) {
use_born_on = TRUE;
} else if (is_classic_ais_cluster()) {
use_born_on = TRUE;
}
age = crm_compare_age(your_age);
if (cur_state == S_STARTING) {
reason = "Still starting";
we_loose = TRUE;
} else if (our_node == NULL || crm_is_peer_active(our_node) == FALSE) {
reason = "We are not part of the cluster";
log_level = LOG_ERR;
we_loose = TRUE;
} else if (election_id != current_election_id && crm_str_eq(fsa_our_uuid, election_owner, TRUE)) {
log_level = LOG_DEBUG_2;
reason = "Superceeded";
done = TRUE;
} else if (your_node == NULL || crm_is_peer_active(your_node) == FALSE) {
/* Possibly we cached the message in the FSA queue at a point that it wasn't */
reason = "Peer is not part of our cluster";
log_level = LOG_WARNING;
done = TRUE;
} else if (crm_str_eq(op, CRM_OP_NOVOTE, TRUE)) {
char *op_copy = strdup(op);
char *uname_copy = strdup(vote_from);
CRM_ASSERT(crm_str_eq(fsa_our_uuid, election_owner, TRUE));
/* update the list of nodes that have voted */
g_hash_table_replace(voted, uname_copy, op_copy);
reason = "Recorded";
done = TRUE;
} else if (crm_str_eq(vote_from, fsa_our_uname, TRUE)) {
char *op_copy = strdup(op);
char *uname_copy = strdup(vote_from);
CRM_ASSERT(crm_str_eq(fsa_our_uuid, election_owner, TRUE));
/* update ourselves in the list of nodes that have voted */
g_hash_table_replace(voted, uname_copy, op_copy);
reason = "Recorded";
done = TRUE;
} else if (compare_version(your_version, CRM_FEATURE_SET) < 0) {
reason = "Version";
we_loose = TRUE;
} else if (compare_version(your_version, CRM_FEATURE_SET) > 0) {
reason = "Version";
} else if (age < 0) {
reason = "Uptime";
we_loose = TRUE;
} else if (age > 0) {
reason = "Uptime";
/* TODO: Check for y(our) born < 0 */
} else if (use_born_on && your_node->born < our_node->born) {
reason = "Born";
we_loose = TRUE;
} else if (use_born_on && your_node->born > our_node->born) {
reason = "Born";
} else if (fsa_our_uname == NULL) {
reason = "Unknown host name";
we_loose = TRUE;
} else if (strcasecmp(fsa_our_uname, vote_from) > 0) {
reason = "Host name";
we_loose = TRUE;
} else {
reason = "Host name";
CRM_ASSERT(strcmp(fsa_our_uname, vote_from) != 0);
/* cant happen...
* } else if(strcasecmp(fsa_our_uname, vote_from) == 0) {
*
* default...
* } else { // strcasecmp(fsa_our_uname, vote_from) < 0
* we win
*/
}
if (done) {
do_crm_log(log_level + 1, "Election %d (current: %d, owner: %s): Processed %s from %s (%s)",
election_id, current_election_id, election_owner, op, vote_from, reason);
} else if (we_loose) {
xmlNode *novote = create_request(CRM_OP_NOVOTE, NULL, vote_from,
CRM_SYSTEM_CRMD, CRM_SYSTEM_CRMD, NULL);
do_crm_log(log_level, "Election %d (owner: %s) lost: %s from %s (%s)",
election_id, election_owner, op, vote_from, reason);
update_dc(NULL);
crm_timer_stop(election_timeout);
if (fsa_input_register & R_THE_DC) {
crm_trace("Give up the DC to %s", vote_from);
register_fsa_input(C_FSA_INTERNAL, I_RELEASE_DC, NULL);
} else if (cur_state != S_STARTING) {
crm_trace("We werent the DC anyway");
register_fsa_input(C_FSA_INTERNAL, I_PENDING, NULL);
}
crm_xml_add(novote, F_CRM_ELECTION_OWNER, election_owner);
crm_xml_add_int(novote, F_CRM_ELECTION_ID, election_id);
send_cluster_message(crm_get_peer(0, vote_from), crm_msg_crmd, novote, TRUE);
free_xml(novote);
fsa_cib_conn->cmds->set_slave(fsa_cib_conn, cib_scope_local);
last_election_loss = time(NULL);
} else {
do_crm_log(log_level, "Election %d (owner: %s) pass: %s from %s (%s)",
election_id, election_owner, op, vote_from, reason);
if (last_election_loss) {
time_t tm_now = time(NULL);
if (tm_now - last_election_loss < (time_t) loss_dampen) {
crm_info("Election %d ignore: We already lost an election less than %ds ago (%s)",
election_id, loss_dampen, ctime(&last_election_loss));
update_dc(NULL);
return;
}
last_election_loss = 0;
}
register_fsa_input(C_FSA_INTERNAL, I_ELECTION, NULL);
g_hash_table_destroy(voted);
voted = NULL;
}
}
