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diff --git a/daemons/controld/controld_callbacks.c b/daemons/controld/controld_callbacks.c
index f7e3db24c6..21f831ab1e 100644
--- a/daemons/controld/controld_callbacks.c
+++ b/daemons/controld/controld_callbacks.c
@@ -1,338 +1,342 @@
/*
- * Copyright 2004-2019 the Pacemaker project contributors
+ * Copyright 2004-2020 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <string.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crm/cluster.h>
#include <crm/cib.h>
#include <pacemaker-controld.h>
/* From join_dc... */
extern gboolean check_join_state(enum crmd_fsa_state cur_state, const char *source);
void
crmd_ha_msg_filter(xmlNode * msg)
{
if (AM_I_DC) {
const char *sys_from = crm_element_value(msg, F_CRM_SYS_FROM);
if (safe_str_eq(sys_from, CRM_SYSTEM_DC)) {
const char *from = crm_element_value(msg, F_ORIG);
if (safe_str_neq(from, fsa_our_uname)) {
int level = LOG_INFO;
const char *op = crm_element_value(msg, F_CRM_TASK);
/* make sure the election happens NOW */
if (fsa_state != S_ELECTION) {
ha_msg_input_t new_input;
level = LOG_WARNING;
new_input.msg = msg;
register_fsa_error_adv(C_FSA_INTERNAL, I_ELECTION, NULL, &new_input,
__FUNCTION__);
}
do_crm_log(level, "Another DC detected: %s (op=%s)", from, op);
goto done;
}
}
} else {
const char *sys_to = crm_element_value(msg, F_CRM_SYS_TO);
if (safe_str_eq(sys_to, CRM_SYSTEM_DC)) {
return;
}
}
/* crm_log_xml_trace("HA[inbound]", msg); */
route_message(C_HA_MESSAGE, msg);
done:
trigger_fsa(fsa_source);
}
/*!
* \internal
* \brief Check whether a node is online
*
* \param[in] node Node to check
*
* \retval -1 if completely dead
* \retval 0 if partially alive
* \retval 1 if completely alive
*/
static int
node_alive(const crm_node_t *node)
{
if (is_set(node->flags, crm_remote_node)) {
// Pacemaker Remote nodes can't be partially alive
return safe_str_eq(node->state, CRM_NODE_MEMBER)? 1: -1;
} else if (crm_is_peer_active(node)) {
// Completely up cluster node: both cluster member and peer
return 1;
} else if (is_not_set(node->processes, crm_get_cluster_proc())
&& safe_str_neq(node->state, CRM_NODE_MEMBER)) {
// Completely down cluster node: neither cluster member nor peer
return -1;
}
// Partially up cluster node: only cluster member or only peer
return 0;
}
#define state_text(state) ((state)? (const char *)(state) : "in unknown state")
void
peer_update_callback(enum crm_status_type type, crm_node_t * node, const void *data)
{
uint32_t old = 0;
bool appeared = FALSE;
bool is_remote = is_set(node->flags, crm_remote_node);
/* The controller 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_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);
}
} else {
controld_remove_voter(node->uname);
}
crmd_alert_node_event(node);
break;
case crm_status_processes:
CRM_CHECK(data != NULL, return);
old = *(const uint32_t *)data;
appeared = is_set(node->processes, crm_get_cluster_proc());
crm_info("Node %s is %s a peer " CRM_XS " DC=%s old=0x%07x new=0x%07x",
node->uname, (appeared? "now" : "no longer"),
(AM_I_DC? "true" : (fsa_our_dc? fsa_our_dc : "<none>")),
old, node->processes);
if (is_not_set((node->processes ^ old), crm_get_cluster_proc())) {
/* Peer status did not change. This should not be possible,
* since we don't track process flags other than peer status.
*/
crm_trace("Process flag 0x%7x did not change from 0x%7x to 0x%7x",
crm_get_cluster_proc(), old, node->processes);
return;
}
if (!appeared) {
controld_remove_voter(node->uname);
}
if (is_not_set(fsa_input_register, R_CIB_CONNECTED)) {
crm_trace("Ignoring peer status change because not connected to CIB");
return;
} else if (fsa_state == S_STOPPING) {
crm_trace("Ignoring peer status change because stopping");
return;
}
if (safe_str_eq(node->uname, fsa_our_uname) && !appeared) {
/* 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) {
controld_delete_node_state(node->uname,
controld_section_attrs,
cib_scope_local);
}
- } else if(AM_I_DC) {
+ } else if (AM_I_DC || (fsa_our_dc == NULL)) {
+ /* This only needs to be done once, so normally the DC should do
+ * it. However if there is no DC, every node must do it, since
+ * there is no other way to ensure some one node does it.
+ */
if (appeared) {
te_trigger_stonith_history_sync(FALSE);
} else {
controld_delete_node_state(node->uname,
controld_section_attrs,
cib_scope_local);
}
}
break;
}
if (AM_I_DC) {
xmlNode *update = NULL;
int flags = node_update_peer;
int alive = node_alive(node);
crm_action_t *down = match_down_event(node->uuid);
crm_trace("Alive=%d, appeared=%d, down=%d",
alive, appeared, (down? down->id : -1));
if (appeared && (alive > 0) && !is_remote) {
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 fencer reported fencing of %s complete",
(down->confirmed? "after" : "before"), node->uname);
} else if (!appeared && safe_str_eq(task, CRM_OP_SHUTDOWN)) {
// Shutdown actions are immediately confirmed (i.e. no_wait)
if (!is_remote) {
flags |= node_update_join | node_update_expected;
crmd_peer_down(node, FALSE);
check_join_state(fsa_state, __FUNCTION__);
}
if (alive >= 0) {
crm_info("%s of peer %s is in progress " CRM_XS " action=%d",
task, node->uname, down->id);
} else {
crm_notice("%s of peer %s is complete " CRM_XS " action=%d",
task, node->uname, down->id);
update_graph(transition_graph, down);
trigger_graph();
}
} else {
crm_trace("Node %s is %s, was expected to %s (op %d)",
node->uname,
((alive > 0)? "alive" :
((alive < 0)? "dead" : "partially alive")),
task, down->id);
}
} else if (appeared == FALSE) {
crm_warn("Stonith/shutdown of node %s was not expected",
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__);
if (update == NULL) {
crm_debug("Node state update not yet possible for %s", node->uname);
} else {
fsa_cib_anon_update(XML_CIB_TAG_STATUS, update);
}
free_xml(update);
}
trigger_fsa(fsa_source);
}
void
crmd_cib_connection_destroy(gpointer user_data)
{
CRM_CHECK(user_data == fsa_cib_conn,;);
crm_trace("Invoked");
trigger_fsa(fsa_source);
fsa_cib_conn->state = cib_disconnected;
if (is_set(fsa_input_register, R_CIB_CONNECTED) == FALSE) {
crm_info("Connection to the CIB manager terminated");
return;
}
// @TODO This should trigger a reconnect, not a shutdown
crm_crit("Lost connection to the CIB manager, shutting down");
register_fsa_input(C_FSA_INTERNAL, I_ERROR, NULL);
clear_bit(fsa_input_register, R_CIB_CONNECTED);
return;
}
gboolean
crm_fsa_trigger(gpointer user_data)
{
crm_trace("Invoked (queue len: %d)", g_list_length(fsa_message_queue));
s_crmd_fsa(C_FSA_INTERNAL);
crm_trace("Exited (queue len: %d)", g_list_length(fsa_message_queue));
return TRUE;
}

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