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third-party-mirror/actifio/refs/heads/10.0.6/./pacemaker/lib/ais/plugin.c
blob: 99f8b61a4f59537e9fb983e0a16d8ee41bd25fc1 [file] [log] [blame] [edit]
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USAA
*/
#include <crm_internal.h>
#include <crm/cluster/internal.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <corosync/totem/totempg.h>
#include <corosync/engine/objdb.h>
#include <corosync/engine/config.h>
#include <config.h>
#include "plugin.h"
#include "utils.h"
#include <glib.h>
#include <sys/resource.h>
#include <sys/utsname.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <pthread.h>
#include <bzlib.h>
#include <pwd.h>
struct corosync_api_v1 *pcmk_api = NULL;
uint32_t plugin_has_votes = 0;
uint32_t plugin_expected_votes = 2;
int use_mgmtd = 0;
int plugin_log_level = LOG_DEBUG;
char *local_uname = NULL;
int local_uname_len = 0;
char *local_cname = NULL;
int local_cname_len = 0;
uint32_t local_nodeid = 0;
char *ipc_channel_name = NULL;
static uint64_t local_born_on = 0;
uint64_t membership_seq = 0;
pthread_t pcmk_wait_thread;
gboolean use_mcp = FALSE;
gboolean wait_active = TRUE;
gboolean have_reliable_membership_id = FALSE;
GHashTable *ipc_client_list = NULL;
GHashTable *membership_list = NULL;
GHashTable *membership_notify_list = NULL;
#define MAX_RESPAWN 100
#define LOOPBACK_ID 16777343
#define crm_flag_none 0x00000000
#define crm_flag_members 0x00000001
struct crm_identify_msg_s {
cs_ipc_header_request_t header __attribute__ ((aligned(8)));
uint32_t id;
uint32_t pid;
int32_t votes;
uint32_t processes;
char uname[256];
char version[256];
uint64_t born_on;
} __attribute__ ((packed));
/* *INDENT-OFF* */
static crm_child_t pcmk_children[] = {
{ 0, crm_proc_none, crm_flag_none, 0, 0, FALSE, "none", NULL, NULL, NULL, NULL },
{ 0, crm_proc_plugin, crm_flag_none, 0, 0, FALSE, "ais", NULL, NULL, NULL, NULL },
{ 0, crm_proc_lrmd, crm_flag_none, 3, 0, TRUE, "lrmd", NULL, CRM_DAEMON_DIR"/lrmd", NULL, NULL },
{ 0, crm_proc_cib, crm_flag_members, 1, 0, TRUE, "cib", CRM_DAEMON_USER, CRM_DAEMON_DIR"/cib", NULL, NULL },
{ 0, crm_proc_crmd, crm_flag_members, 6, 0, TRUE, "crmd", CRM_DAEMON_USER, CRM_DAEMON_DIR"/crmd", NULL, NULL },
{ 0, crm_proc_attrd, crm_flag_none, 4, 0, TRUE, "attrd", CRM_DAEMON_USER, CRM_DAEMON_DIR"/attrd", NULL, NULL },
{ 0, crm_proc_stonithd, crm_flag_none, 0, 0, TRUE, "stonithd", NULL, "/bin/false", NULL, NULL },
{ 0, crm_proc_pe, crm_flag_none, 5, 0, TRUE, "pengine", CRM_DAEMON_USER, CRM_DAEMON_DIR"/pengine", NULL, NULL },
{ 0, crm_proc_mgmtd, crm_flag_none, 7, 0, TRUE, "mgmtd", NULL, HB_DAEMON_DIR"/mgmtd", NULL, NULL },
{ 0, crm_proc_stonith_ng, crm_flag_members, 2, 0, TRUE, "stonith-ng", NULL, CRM_DAEMON_DIR"/stonithd", NULL, NULL },
};
/* *INDENT-ON* */
void send_cluster_id(void);
int send_plugin_msg_raw(const AIS_Message * ais_msg);
char *pcmk_generate_membership_data(void);
gboolean check_message_sanity(const AIS_Message * msg, const char *data);
typedef const void ais_void_ptr;
int pcmk_shutdown(void);
void pcmk_peer_update(enum totem_configuration_type configuration_type,
const unsigned int *member_list, size_t member_list_entries,
const unsigned int *left_list, size_t left_list_entries,
const unsigned int *joined_list, size_t joined_list_entries,
const struct memb_ring_id *ring_id);
int pcmk_startup(struct corosync_api_v1 *corosync_api);
int pcmk_config_init(struct corosync_api_v1 *corosync_api);
int pcmk_ipc_exit(void *conn);
int pcmk_ipc_connect(void *conn);
void pcmk_ipc(void *conn, ais_void_ptr * msg);
void pcmk_exec_dump(void);
void pcmk_cluster_swab(void *msg);
void pcmk_cluster_callback(ais_void_ptr * message, unsigned int nodeid);
void pcmk_nodeid(void *conn, ais_void_ptr * msg);
void pcmk_nodes(void *conn, ais_void_ptr * msg);
void pcmk_notify(void *conn, ais_void_ptr * msg);
void pcmk_remove_member(void *conn, ais_void_ptr * msg);
void pcmk_quorum(void *conn, ais_void_ptr * msg);
void pcmk_cluster_id_swab(void *msg);
void pcmk_cluster_id_callback(ais_void_ptr * message, unsigned int nodeid);
void ais_remove_peer(char *node_id);
void ais_remove_peer_by_name(const char *node_name);
static uint32_t
get_process_list(void)
{
int lpc = 0;
uint32_t procs = crm_proc_plugin;
if (use_mcp) {
return 0;
}
for (lpc = 0; lpc < SIZEOF(pcmk_children); lpc++) {
if (pcmk_children[lpc].pid != 0) {
procs |= pcmk_children[lpc].flag;
}
}
return procs;
}
static struct corosync_lib_handler pcmk_lib_service[] = {
{ /* 0 - crm_class_cluster */
.lib_handler_fn = pcmk_ipc,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
},
{ /* 1 - crm_class_members */
.lib_handler_fn = pcmk_nodes,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
},
{ /* 2 - crm_class_notify */
.lib_handler_fn = pcmk_notify,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
},
{ /* 3 - crm_class_nodeid */
.lib_handler_fn = pcmk_nodeid,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
},
{ /* 4 - crm_class_rmpeer */
.lib_handler_fn = pcmk_remove_member,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
},
{ /* 5 - crm_class_quorum */
.lib_handler_fn = pcmk_quorum,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
},
};
static struct corosync_exec_handler pcmk_exec_service[] = {
{ /* 0 */
.exec_handler_fn = pcmk_cluster_callback,
.exec_endian_convert_fn = pcmk_cluster_swab},
{ /* 1 */
.exec_handler_fn = pcmk_cluster_id_callback,
.exec_endian_convert_fn = pcmk_cluster_id_swab}
};
/*
* Exports the interface for the service
*/
/* *INDENT-OFF* */
struct corosync_service_engine pcmk_service_handler = {
.name = (char *)"Pacemaker Cluster Manager "PACEMAKER_VERSION,
.id = PCMK_SERVICE_ID,
.private_data_size = 0,
.flow_control = COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED,
.allow_inquorate = CS_LIB_ALLOW_INQUORATE,
.lib_init_fn = pcmk_ipc_connect,
.lib_exit_fn = pcmk_ipc_exit,
.exec_init_fn = pcmk_startup,
.exec_exit_fn = pcmk_shutdown,
.config_init_fn = pcmk_config_init,
.priority = 50,
.lib_engine = pcmk_lib_service,
.lib_engine_count = sizeof (pcmk_lib_service) / sizeof (struct corosync_lib_handler),
.exec_engine = pcmk_exec_service,
.exec_engine_count = sizeof (pcmk_exec_service) / sizeof (struct corosync_exec_handler),
.confchg_fn = pcmk_peer_update,
.exec_dump_fn = pcmk_exec_dump,
/* void (*sync_init) (void); */
/* int (*sync_process) (void); */
/* void (*sync_activate) (void); */
/* void (*sync_abort) (void); */
};
/*
* Dynamic Loader definition
*/
struct corosync_service_engine *pcmk_get_handler_ver0 (void);
struct corosync_service_engine_iface_ver0 pcmk_service_handler_iface = {
.corosync_get_service_engine_ver0 = pcmk_get_handler_ver0
};
static struct lcr_iface openais_pcmk_ver0[2] = {
{
.name = "pacemaker",
.version = 0,
.versions_replace = 0,
.versions_replace_count = 0,
.dependencies = 0,
.dependency_count = 0,
.constructor = NULL,
.destructor = NULL,
.interfaces = NULL
},
{
.name = "pacemaker",
.version = 1,
.versions_replace = 0,
.versions_replace_count = 0,
.dependencies = 0,
.dependency_count = 0,
.constructor = NULL,
.destructor = NULL,
.interfaces = NULL
}
};
static struct lcr_comp pcmk_comp_ver0 = {
.iface_count = 2,
.ifaces = openais_pcmk_ver0
};
/* *INDENT-ON* */
struct corosync_service_engine *
pcmk_get_handler_ver0(void)
{
return (&pcmk_service_handler);
}
__attribute__ ((constructor))
static void
register_this_component(void)
{
lcr_interfaces_set(&openais_pcmk_ver0[0], &pcmk_service_handler_iface);
lcr_interfaces_set(&openais_pcmk_ver0[1], &pcmk_service_handler_iface);
lcr_component_register(&pcmk_comp_ver0);
}
static int
plugin_has_quorum(void)
{
if ((plugin_expected_votes >> 1) < plugin_has_votes) {
return 1;
}
return 0;
}
static void
update_expected_votes(int value)
{
if (value < plugin_has_votes) {
/* Never drop below the number of connected nodes */
ais_info("Cannot update expected quorum votes %d -> %d:"
" value cannot be less that the current number of votes",
plugin_expected_votes, value);
} else if (plugin_expected_votes != value) {
ais_info("Expected quorum votes %d -> %d", plugin_expected_votes, value);
plugin_expected_votes = value;
}
}
/* Create our own local copy of the config so we can navigate it */
static void
process_ais_conf(void)
{
char *value = NULL;
gboolean any_log = FALSE;
hdb_handle_t top_handle = 0;
hdb_handle_t local_handle = 0;
ais_info("Reading configure");
top_handle = config_find_init(pcmk_api, "logging");
local_handle = config_find_next(pcmk_api, "logging", top_handle);
get_config_opt(pcmk_api, local_handle, "debug", &value, "on");
if (ais_get_boolean(value)) {
plugin_log_level = LOG_DEBUG;
pcmk_env.debug = "1";
} else {
plugin_log_level = LOG_INFO;
pcmk_env.debug = "0";
}
get_config_opt(pcmk_api, local_handle, "to_logfile", &value, "off");
if (ais_get_boolean(value)) {
get_config_opt(pcmk_api, local_handle, "logfile", &value, NULL);
if (value == NULL) {
ais_err("Logging to a file requested but no log file specified");
} else {
uid_t pcmk_uid = geteuid();
uid_t pcmk_gid = getegid();
FILE *logfile = fopen(value, "a");
if (logfile) {
int ignore = 0;
int logfd = fileno(logfile);
pcmk_env.logfile = value;
/* Ensure the file has the correct permissions */
ignore = fchown(logfd, pcmk_uid, pcmk_gid);
ignore = fchmod(logfd, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
if (ignore < 0) {
fprintf(logfile, "Could not set r/w permissions for uid=%d, gid=%d on %s\n",
pcmk_uid, pcmk_gid, value);
} else {
fprintf(logfile, "Set r/w permissions for uid=%d, gid=%d on %s\n",
pcmk_uid, pcmk_gid, value);
}
fflush(logfile);
fsync(logfd);
fclose(logfile);
any_log = TRUE;
} else {
ais_err("Couldn't create logfile: %s", value);
}
}
}
get_config_opt(pcmk_api, local_handle, "to_syslog", &value, "on");
if (any_log && ais_get_boolean(value) == FALSE) {
ais_info("User configured file based logging and explicitly disabled syslog.");
value = "none";
} else {
if (ais_get_boolean(value) == FALSE) {
ais_err
("Please enable some sort of logging, either 'to_file: on' or 'to_syslog: on'.");
ais_err("If you use file logging, be sure to also define a value for 'logfile'");
}
get_config_opt(pcmk_api, local_handle, "syslog_facility", &value, "daemon");
}
pcmk_env.syslog = value;
config_find_done(pcmk_api, local_handle);
top_handle = config_find_init(pcmk_api, "quorum");
local_handle = config_find_next(pcmk_api, "quorum", top_handle);
get_config_opt(pcmk_api, local_handle, "provider", &value, NULL);
if (value && ais_str_eq("quorum_cman", value)) {
pcmk_env.quorum = "cman";
} else {
pcmk_env.quorum = "pcmk";
}
top_handle = config_find_init(pcmk_api, "service");
local_handle = config_find_next(pcmk_api, "service", top_handle);
while (local_handle) {
value = NULL;
pcmk_api->object_key_get(local_handle, "name", strlen("name"), (void **)&value, NULL);
if (ais_str_eq("pacemaker", value)) {
break;
}
local_handle = config_find_next(pcmk_api, "service", top_handle);
}
get_config_opt(pcmk_api, local_handle, "ver", &value, "0");
if (ais_str_eq(value, "1")) {
ais_info("Enabling MCP mode: Use the Pacemaker init script to complete Pacemaker startup");
use_mcp = TRUE;
}
get_config_opt(pcmk_api, local_handle, "clustername", &local_cname, "pcmk");
local_cname_len = strlen(local_cname);
get_config_opt(pcmk_api, local_handle, "use_logd", &value, "no");
pcmk_env.use_logd = value;
get_config_opt(pcmk_api, local_handle, "use_mgmtd", &value, "no");
if (ais_get_boolean(value) == FALSE) {
int lpc = 0;
for (; lpc < SIZEOF(pcmk_children); lpc++) {
if (crm_proc_mgmtd & pcmk_children[lpc].flag) {
/* Disable mgmtd startup */
pcmk_children[lpc].start_seq = 0;
break;
}
}
}
config_find_done(pcmk_api, local_handle);
}
int
pcmk_config_init(struct corosync_api_v1 *unused)
{
return 0;
}
static void *
pcmk_wait_dispatch(void *arg)
{
struct timespec waitsleep = {
.tv_sec = 1,
.tv_nsec = 0
};
while (wait_active) {
int lpc = 0;
for (; lpc < SIZEOF(pcmk_children); lpc++) {
if (pcmk_children[lpc].pid > 0) {
int status;
pid_t pid = wait4(pcmk_children[lpc].pid, &status, WNOHANG, NULL);
if (pid == 0) {
continue;
} else if (pid < 0) {
ais_perror("Call to wait4(%s) failed", pcmk_children[lpc].name);
continue;
}
/* cleanup */
pcmk_children[lpc].pid = 0;
pcmk_children[lpc].conn = NULL;
pcmk_children[lpc].async_conn = NULL;
if (WIFSIGNALED(status)) {
int sig = WTERMSIG(status);
ais_err("Child process %s terminated with signal %d"
" (pid=%d, core=%s)",
pcmk_children[lpc].name, sig, pid,
WCOREDUMP(status) ? "true" : "false");
} else if (WIFEXITED(status)) {
int rc = WEXITSTATUS(status);
do_ais_log(rc == 0 ? LOG_NOTICE : LOG_ERR,
"Child process %s exited (pid=%d, rc=%d)", pcmk_children[lpc].name,
pid, rc);
if (rc == 100) {
ais_notice("Child process %s no longer wishes"
" to be respawned", pcmk_children[lpc].name);
pcmk_children[lpc].respawn = FALSE;
}
}
/* Broadcast the fact that one of our processes died
*
* Try to get some logging of the cause out first though
* because we're probably about to get fenced
*
* Potentially do this only if respawn_count > N
* to allow for local recovery
*/
send_cluster_id();
pcmk_children[lpc].respawn_count += 1;
if (pcmk_children[lpc].respawn_count > MAX_RESPAWN) {
ais_err("Child respawn count exceeded by %s", pcmk_children[lpc].name);
pcmk_children[lpc].respawn = FALSE;
}
if (pcmk_children[lpc].respawn) {
ais_notice("Respawning failed child process: %s", pcmk_children[lpc].name);
spawn_child(&(pcmk_children[lpc]));
}
send_cluster_id();
}
}
sched_yield();
nanosleep(&waitsleep, 0);
}
return 0;
}
static uint32_t
pcmk_update_nodeid(void)
{
int last = local_nodeid;
local_nodeid = pcmk_api->totem_nodeid_get();
if (last != local_nodeid) {
if (last == 0) {
ais_info("Local node id: %u", local_nodeid);
} else {
char *last_s = NULL;
ais_malloc0(last_s, 32);
ais_warn("Detected local node id change: %u -> %u", last, local_nodeid);
snprintf(last_s, 31, "%u", last);
ais_remove_peer(last_s);
ais_free(last_s);
}
update_member(local_nodeid, 0, 0, 1, 0, local_uname, CRM_NODE_MEMBER, NULL);
}
return local_nodeid;
}
static void
build_path(const char *path_c, mode_t mode)
{
int offset = 1, len = 0;
char *path = ais_strdup(path_c);
AIS_CHECK(path != NULL, return);
for (len = strlen(path); offset < len; offset++) {
if (path[offset] == '/') {
path[offset] = 0;
if (mkdir(path, mode) < 0 && errno != EEXIST) {
ais_perror("Could not create directory '%s'", path);
break;
}
path[offset] = '/';
}
}
if (mkdir(path, mode) < 0 && errno != EEXIST) {
ais_perror("Could not create directory '%s'", path);
}
ais_free(path);
}
int
pcmk_startup(struct corosync_api_v1 *init_with)
{
int rc = 0;
int lpc = 0;
int start_seq = 1;
struct utsname us;
struct rlimit cores;
static int max = SIZEOF(pcmk_children);
uid_t pcmk_uid = 0;
gid_t pcmk_gid = 0;
uid_t root_uid = -1;
uid_t cs_uid = geteuid();
pcmk_user_lookup("root", &root_uid, NULL);
pcmk_api = init_with;
pcmk_env.debug = "0";
pcmk_env.logfile = NULL;
pcmk_env.use_logd = "false";
pcmk_env.syslog = "daemon";
if (cs_uid != root_uid) {
ais_err("Corosync must be configured to start as 'root',"
" otherwise Pacemaker cannot manage services."
" Expected %d got %d", root_uid, cs_uid);
return -1;
}
process_ais_conf();
membership_list = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, destroy_ais_node);
membership_notify_list = g_hash_table_new(g_direct_hash, g_direct_equal);
ipc_client_list = g_hash_table_new(g_direct_hash, g_direct_equal);
ais_info("CRM: Initialized");
log_printf(LOG_INFO, "Logging: Initialized %s\n", __FUNCTION__);
rc = getrlimit(RLIMIT_CORE, &cores);
if (rc < 0) {
ais_perror("Cannot determine current maximum core size.");
} else {
if (cores.rlim_max == 0 && geteuid() == 0) {
cores.rlim_max = RLIM_INFINITY;
} else {
ais_info("Maximum core file size is: %lu", cores.rlim_max);
}
cores.rlim_cur = cores.rlim_max;
rc = setrlimit(RLIMIT_CORE, &cores);
if (rc < 0) {
ais_perror("Core file generation will remain disabled."
" Core files are an important diagnositic tool,"
" please consider enabling them by default.");
}
#if 0
/* system() is not thread-safe, can't call from here
* Actually, it's a pretty hacky way to try and achieve this anyway
*/
if (system("echo 1 > /proc/sys/kernel/core_uses_pid") != 0) {
ais_perror("Could not enable /proc/sys/kernel/core_uses_pid");
}
#endif
}
if (pcmk_user_lookup(CRM_DAEMON_USER, &pcmk_uid, &pcmk_gid) < 0) {
ais_err("Cluster user %s does not exist, aborting Pacemaker startup", CRM_DAEMON_USER);
return TRUE;
}
rc = mkdir(CRM_STATE_DIR, 0750);
rc = chown(CRM_STATE_DIR, pcmk_uid, pcmk_gid);
/* Used by stonithd */
build_path(HA_STATE_DIR "/heartbeat", 0755);
/* Used by RAs - Leave owned by root */
build_path(CRM_RSCTMP_DIR, 0755);
rc = uname(&us);
AIS_ASSERT(rc == 0);
local_uname = ais_strdup(us.nodename);
local_uname_len = strlen(local_uname);
ais_info("Service: %d", PCMK_SERVICE_ID);
ais_info("Local hostname: %s", local_uname);
pcmk_update_nodeid();
if (use_mcp == FALSE) {
pthread_create(&pcmk_wait_thread, NULL, pcmk_wait_dispatch, NULL);
for (start_seq = 1; start_seq < max; start_seq++) {
/* don't start anything with start_seq < 1 */
for (lpc = 0; lpc < max; lpc++) {
if (start_seq == pcmk_children[lpc].start_seq) {
spawn_child(&(pcmk_children[lpc]));
}
}
}
}
return 0;
}
#if 0
/* copied here for reference from exec/totempg.c */
char *
totempg_ifaces_print(unsigned int nodeid)
{
static char iface_string[256 * INTERFACE_MAX];
char one_iface[64];
struct totem_ip_address interfaces[INTERFACE_MAX];
char **status;
unsigned int iface_count;
unsigned int i;
int res;
iface_string[0] = '\0';
res = totempg_ifaces_get(nodeid, interfaces, &status, &iface_count);
if (res == -1) {
return ("no interface found for nodeid");
}
for (i = 0; i < iface_count; i++) {
sprintf(one_iface, "r(%d) ip(%s), ", i, totemip_print(&interfaces[i]));
strcat(iface_string, one_iface);
}
return (iface_string);
}
#endif
static void
ais_mark_unseen_peer_dead(gpointer key, gpointer value, gpointer user_data)
{
int *changed = user_data;
crm_node_t *node = value;
if (node->last_seen != membership_seq && ais_str_eq(CRM_NODE_LOST, node->state) == FALSE) {
ais_info("Node %s was not seen in the previous transition", node->uname);
*changed += update_member(node->id, 0, membership_seq, node->votes,
node->processes, node->uname, CRM_NODE_LOST, NULL);
}
}
void
pcmk_peer_update(enum totem_configuration_type configuration_type,
const unsigned int *member_list, size_t member_list_entries,
const unsigned int *left_list, size_t left_list_entries,
const unsigned int *joined_list, size_t joined_list_entries,
const struct memb_ring_id *ring_id)
{
int lpc = 0;
int changed = 0;
int do_update = 0;
AIS_ASSERT(ring_id != NULL);
switch (configuration_type) {
case TOTEM_CONFIGURATION_REGULAR:
do_update = 1;
break;
case TOTEM_CONFIGURATION_TRANSITIONAL:
break;
}
membership_seq = ring_id->seq;
ais_notice("%s membership event on ring %lld: memb=%ld, new=%ld, lost=%ld",
do_update ? "Stable" : "Transitional", ring_id->seq,
(long)member_list_entries, (long)joined_list_entries, (long)left_list_entries);
if (do_update == 0) {
for (lpc = 0; lpc < joined_list_entries; lpc++) {
const char *prefix = "new: ";
uint32_t nodeid = joined_list[lpc];
ais_info("%s %s %u", prefix, member_uname(nodeid), nodeid);
}
for (lpc = 0; lpc < member_list_entries; lpc++) {
const char *prefix = "memb:";
uint32_t nodeid = member_list[lpc];
ais_info("%s %s %u", prefix, member_uname(nodeid), nodeid);
}
for (lpc = 0; lpc < left_list_entries; lpc++) {
const char *prefix = "lost:";
uint32_t nodeid = left_list[lpc];
ais_info("%s %s %u", prefix, member_uname(nodeid), nodeid);
}
return;
}
for (lpc = 0; lpc < joined_list_entries; lpc++) {
const char *prefix = "NEW: ";
uint32_t nodeid = joined_list[lpc];
crm_node_t *node = NULL;
changed += update_member(nodeid, 0, membership_seq, -1, 0, NULL, CRM_NODE_MEMBER, NULL);
ais_info("%s %s %u", prefix, member_uname(nodeid), nodeid);
node = g_hash_table_lookup(membership_list, GUINT_TO_POINTER(nodeid));
if (node->addr == NULL) {
const char *addr = totempg_ifaces_print(nodeid);
node->addr = ais_strdup(addr);
ais_debug("Node %u has address %s", nodeid, node->addr);
}
}
for (lpc = 0; lpc < member_list_entries; lpc++) {
const char *prefix = "MEMB:";
uint32_t nodeid = member_list[lpc];
changed += update_member(nodeid, 0, membership_seq, -1, 0, NULL, CRM_NODE_MEMBER, NULL);
ais_info("%s %s %u", prefix, member_uname(nodeid), nodeid);
}
for (lpc = 0; lpc < left_list_entries; lpc++) {
const char *prefix = "LOST:";
uint32_t nodeid = left_list[lpc];
changed += update_member(nodeid, 0, membership_seq, -1, 0, NULL, CRM_NODE_LOST, NULL);
ais_info("%s %s %u", prefix, member_uname(nodeid), nodeid);
}
if (changed && joined_list_entries == 0 && left_list_entries == 0) {
ais_err("Something strange happened: %d", changed);
changed = 0;
}
ais_trace("Reaping unseen nodes...");
g_hash_table_foreach(membership_list, ais_mark_unseen_peer_dead, &changed);
if (member_list_entries > 1) {
/* Used to set born-on in send_cluster_id())
* We need to wait until we have at least one peer since first
* membership id is based on the one before we stopped and isn't reliable
*/
have_reliable_membership_id = TRUE;
}
if (changed) {
ais_debug("%d nodes changed", changed);
pcmk_update_nodeid();
send_member_notification();
}
send_cluster_id();
}
int
pcmk_ipc_exit(void *conn)
{
int lpc = 0;
const char *client = NULL;
void *async_conn = conn;
for (; lpc < SIZEOF(pcmk_children); lpc++) {
if (pcmk_children[lpc].conn == conn) {
if (wait_active == FALSE) {
/* Make sure the shutdown loop exits */
pcmk_children[lpc].pid = 0;
}
pcmk_children[lpc].conn = NULL;
pcmk_children[lpc].async_conn = NULL;
client = pcmk_children[lpc].name;
break;
}
}
g_hash_table_remove(membership_notify_list, async_conn);
g_hash_table_remove(ipc_client_list, async_conn);
if (client) {
do_ais_log(LOG_INFO, "Client %s (conn=%p, async-conn=%p) left", client, conn, async_conn);
} else {
do_ais_log((LOG_DEBUG + 1), "Client %s (conn=%p, async-conn=%p) left",
"unknown-transient", conn, async_conn);
}
return (0);
}
int
pcmk_ipc_connect(void *conn)
{
/* Corosync hasn't finished setting up the connection at this point
* Sending messages now messes up the protocol!
*/
return (0);
}
/*
* Executive message handlers
*/
void
pcmk_cluster_swab(void *msg)
{
AIS_Message *ais_msg = msg;
ais_trace("Performing endian conversion...");
ais_msg->id = swab32(ais_msg->id);
ais_msg->size = swab32(ais_msg->size);
ais_msg->is_compressed = swab32(ais_msg->is_compressed);
ais_msg->compressed_size = swab32(ais_msg->compressed_size);
ais_msg->host.id = swab32(ais_msg->host.id);
ais_msg->host.pid = swab32(ais_msg->host.pid);
ais_msg->host.type = swab32(ais_msg->host.type);
ais_msg->host.size = swab32(ais_msg->host.size);
ais_msg->host.local = swab32(ais_msg->host.local);
ais_msg->sender.id = swab32(ais_msg->sender.id);
ais_msg->sender.pid = swab32(ais_msg->sender.pid);
ais_msg->sender.type = swab32(ais_msg->sender.type);
ais_msg->sender.size = swab32(ais_msg->sender.size);
ais_msg->sender.local = swab32(ais_msg->sender.local);
ais_msg->header.size = swab32(ais_msg->header.size);
ais_msg->header.id = swab32(ais_msg->header.id);
ais_msg->header.error = swab32(ais_msg->header.error);
}
void
pcmk_cluster_callback(ais_void_ptr * message, unsigned int nodeid)
{
const AIS_Message *ais_msg = message;
ais_trace("Message from node %u (%s)", nodeid, nodeid == local_nodeid ? "local" : "remote");
/* Shouldn't be required...
update_member(
ais_msg->sender.id, membership_seq, -1, 0, ais_msg->sender.uname, NULL);
*/
if (ais_msg->host.size == 0 || ais_str_eq(ais_msg->host.uname, local_uname)) {
route_ais_message(ais_msg, FALSE);
} else {
ais_trace("Discarding Msg[%d] (dest=%s:%s, from=%s:%s)",
ais_msg->id, ais_dest(&(ais_msg->host)),
msg_type2text(ais_msg->host.type),
ais_dest(&(ais_msg->sender)), msg_type2text(ais_msg->sender.type));
}
}
void
pcmk_cluster_id_swab(void *msg)
{
struct crm_identify_msg_s *ais_msg = msg;
ais_trace("Performing endian conversion...");
ais_msg->id = swab32(ais_msg->id);
ais_msg->pid = swab32(ais_msg->pid);
ais_msg->votes = swab32(ais_msg->votes);
ais_msg->processes = swab32(ais_msg->processes);
ais_msg->born_on = swab64(ais_msg->born_on);
ais_msg->header.size = swab32(ais_msg->header.size);
ais_msg->header.id = swab32(ais_msg->header.id);
}
void
pcmk_cluster_id_callback(ais_void_ptr * message, unsigned int nodeid)
{
int changed = 0;
const struct crm_identify_msg_s *msg = message;
if (nodeid != msg->id) {
ais_err("Invalid message: Node %u claimed to be node %d", nodeid, msg->id);
return;
}
ais_debug("Node update: %s (%s)", msg->uname, msg->version);
changed =
update_member(nodeid, msg->born_on, membership_seq, msg->votes, msg->processes, msg->uname,
NULL, msg->version);
if (changed) {
send_member_notification();
}
}
struct res_overlay {
cs_ipc_header_response_t header __attribute((aligned(8)));
char buf[4096];
};
struct res_overlay *res_overlay = NULL;
static void
send_ipc_ack(void *conn)
{
if (res_overlay == NULL) {
ais_malloc0(res_overlay, sizeof(struct res_overlay));
}
res_overlay->header.id = CRM_MESSAGE_IPC_ACK;
res_overlay->header.size = sizeof(cs_ipc_header_response_t);
res_overlay->header.error = CS_OK;
pcmk_api->ipc_response_send(conn, res_overlay, res_overlay->header.size);
}
/* local callbacks */
void
pcmk_ipc(void *conn, ais_void_ptr * msg)
{
AIS_Message *mutable;
int type = 0;
gboolean transient = TRUE;
const AIS_Message *ais_msg = (const AIS_Message *)msg;
void *async_conn = conn;
ais_trace("Message from client %p", conn);
if (check_message_sanity(msg, ((const AIS_Message *)msg)->data) == FALSE) {
/* The message is corrupted - ignore */
send_ipc_ack(conn);
msg = NULL;
return;
}
/* Make a copy of the message here and ACK it
* The message is only valid until a response is sent
* but the response must also be sent _before_ we send anything else
*/
mutable = ais_msg_copy(ais_msg);
AIS_ASSERT(check_message_sanity(mutable, mutable->data));
type = mutable->sender.type;
ais_trace
("type: %d local: %d conn: %p host type: %d ais: %d sender pid: %d child pid: %d size: %d",
type, mutable->host.local, pcmk_children[type].conn, mutable->host.type, crm_msg_ais,
mutable->sender.pid, pcmk_children[type].pid, ((int)SIZEOF(pcmk_children)));
if (type > crm_msg_none && type < SIZEOF(pcmk_children)) {
/* known child process */
transient = FALSE;
}
#if 0
/* If this check fails, the order of pcmk_children probably
* doesn't match that of the crm_ais_msg_types enum
*/
AIS_CHECK(transient || mutable->sender.pid == pcmk_children[type].pid,
ais_err("Sender: %d, child[%d]: %d", mutable->sender.pid, type,
pcmk_children[type].pid);
ais_free(mutable);
return);
#endif
if (transient == FALSE
&& type > crm_msg_none
&& mutable->host.local
&& pcmk_children[type].conn == NULL && mutable->host.type == crm_msg_ais) {
AIS_CHECK(mutable->sender.type != mutable->sender.pid,
ais_err("Pid=%d, type=%d", mutable->sender.pid, mutable->sender.type));
ais_info("Recorded connection %p for %s/%d",
conn, pcmk_children[type].name, pcmk_children[type].pid);
pcmk_children[type].conn = conn;
pcmk_children[type].async_conn = async_conn;
/* Make sure they have the latest membership */
if (pcmk_children[type].flags & crm_flag_members) {
char *update = pcmk_generate_membership_data();
g_hash_table_replace(membership_notify_list, async_conn, async_conn);
ais_info("Sending membership update " U64T " to %s",
membership_seq, pcmk_children[type].name);
send_client_msg(async_conn, crm_class_members, crm_msg_none, update);
}
} else if (transient) {
AIS_CHECK(mutable->sender.type == mutable->sender.pid,
ais_err("Pid=%d, type=%d", mutable->sender.pid, mutable->sender.type));
g_hash_table_replace(ipc_client_list, async_conn, GUINT_TO_POINTER(mutable->sender.pid));
}
mutable->sender.id = local_nodeid;
mutable->sender.size = local_uname_len;
memset(mutable->sender.uname, 0, MAX_NAME);
memcpy(mutable->sender.uname, local_uname, mutable->sender.size);
route_ais_message(mutable, TRUE);
send_ipc_ack(conn);
msg = NULL;
ais_free(mutable);
}
int
pcmk_shutdown(void)
{
int lpc = 0;
static int phase = 0;
static int max_wait = 0;
static time_t next_log = 0;
static int max = SIZEOF(pcmk_children);
if (use_mcp) {
if (pcmk_children[crm_msg_crmd].conn || pcmk_children[crm_msg_stonith_ng].conn) {
time_t now = time(NULL);
if (now > next_log) {
next_log = now + 300;
ais_notice
("Preventing Corosync shutdown. Please ensure Pacemaker is stopped first.");
}
return -1;
}
ais_notice("Unloading Pacemaker plugin");
return 0;
}
if (phase == 0) {
ais_notice("Shutting down Pacemaker");
phase = max;
}
wait_active = FALSE; /* stop the wait loop */
for (; phase > 0; phase--) {
/* don't stop anything with start_seq < 1 */
for (lpc = max - 1; lpc >= 0; lpc--) {
if (phase != pcmk_children[lpc].start_seq) {
continue;
}
if (pcmk_children[lpc].pid) {
pid_t pid = 0;
int status = 0;
time_t now = time(NULL);
if (pcmk_children[lpc].respawn) {
max_wait = 5; /* 5 * 30s = 2.5 minutes... plenty once the crmd is gone */
next_log = now + 30;
pcmk_children[lpc].respawn = FALSE;
stop_child(&(pcmk_children[lpc]), SIGTERM);
}
pid = wait4(pcmk_children[lpc].pid, &status, WNOHANG, NULL);
if (pid < 0) {
ais_perror("Call to wait4(%s/%d) failed - treating it as stopped",
pcmk_children[lpc].name, pcmk_children[lpc].pid);
} else if (pid == 0) {
if (now >= next_log) {
max_wait--;
next_log = now + 30;
ais_notice("Still waiting for %s (pid=%d, seq=%d) to terminate...",
pcmk_children[lpc].name, pcmk_children[lpc].pid,
pcmk_children[lpc].start_seq);
if (max_wait <= 0 && phase < pcmk_children[crm_msg_crmd].start_seq) {
ais_err("Child %s taking too long to terminate, sending SIGKILL",
pcmk_children[lpc].name);
stop_child(&(pcmk_children[lpc]), SIGKILL);
}
}
/* Return control to corosync */
return -1;
}
}
/* cleanup */
ais_notice("%s confirmed stopped", pcmk_children[lpc].name);
pcmk_children[lpc].async_conn = NULL;
pcmk_children[lpc].conn = NULL;
pcmk_children[lpc].pid = 0;
}
}
send_cluster_id();
ais_notice("Shutdown complete");
/* TODO: Add back the logsys flush call once it's written */
return 0;
}
struct member_loop_data {
char *string;
};
static void
member_vote_count_fn(gpointer key, gpointer value, gpointer user_data)
{
crm_node_t *node = value;
if (ais_str_eq(CRM_NODE_MEMBER, node->state)) {
plugin_has_votes += node->votes;
}
}
void
member_loop_fn(gpointer key, gpointer value, gpointer user_data)
{
crm_node_t *node = value;
struct member_loop_data *data = user_data;
ais_trace("Dumping node %u", node->id);
data->string = append_member(data->string, node);
}
char *
pcmk_generate_membership_data(void)
{
int size = 0;
struct member_loop_data data;
size = 256;
ais_malloc0(data.string, size);
/* Ensure the list of active processes is up-to-date */
update_member(local_nodeid, 0, 0, -1, get_process_list(), local_uname, CRM_NODE_MEMBER, NULL);
plugin_has_votes = 0;
g_hash_table_foreach(membership_list, member_vote_count_fn, NULL);
if (plugin_has_votes > plugin_expected_votes) {
update_expected_votes(plugin_has_votes);
}
snprintf(data.string, size,
"<nodes id=\"" U64T "\" quorate=\"%s\" expected=\"%u\" actual=\"%u\">",
membership_seq, plugin_has_quorum()? "true" : "false",
plugin_expected_votes, plugin_has_votes);
g_hash_table_foreach(membership_list, member_loop_fn, &data);
size = strlen(data.string);
data.string = realloc_safe(data.string, size + 9); /* 9 = </nodes> + nul */
sprintf(data.string + size, "</nodes>");
return data.string;
}
void
pcmk_nodes(void *conn, ais_void_ptr * msg)
{
char *data = pcmk_generate_membership_data();
void *async_conn = conn;
/* send the ACK before we send any other messages
* - but after we no longer need to access the message
*/
send_ipc_ack(conn);
msg = NULL;
if (async_conn) {
send_client_msg(async_conn, crm_class_members, crm_msg_none, data);
}
ais_free(data);
}
void
pcmk_remove_member(void *conn, ais_void_ptr * msg)
{
const AIS_Message *ais_msg = msg;
char *data = get_ais_data(ais_msg);
send_ipc_ack(conn);
msg = NULL;
if (data != NULL) {
char *bcast = ais_concat("remove-peer", data, ':');
send_plugin_msg(crm_msg_ais, NULL, bcast);
ais_info("Sent: %s", bcast);
ais_free(bcast);
}
ais_free(data);
}
static void
send_quorum_details(void *conn)
{
int size = 256;
char *data = NULL;
ais_malloc0(data, size);
snprintf(data, size, "<quorum id=\"" U64T "\" quorate=\"%s\" expected=\"%u\" actual=\"%u\"/>",
membership_seq, plugin_has_quorum()? "true" : "false",
plugin_expected_votes, plugin_has_votes);
send_client_msg(conn, crm_class_quorum, crm_msg_none, data);
ais_free(data);
}
void
pcmk_quorum(void *conn, ais_void_ptr * msg)
{
char *dummy = NULL;
const AIS_Message *ais_msg = msg;
char *data = get_ais_data(ais_msg);
send_ipc_ack(conn);
msg = NULL;
/* Make sure the current number of votes is accurate */
dummy = pcmk_generate_membership_data();
ais_free(dummy);
/* Calls without data just want the current quorum details */
if (data != NULL && strlen(data) > 0) {
int value = ais_get_int(data, NULL);
update_expected_votes(value);
}
send_quorum_details(conn);
ais_free(data);
}
void
pcmk_notify(void *conn, ais_void_ptr * msg)
{
const AIS_Message *ais_msg = msg;
char *data = get_ais_data(ais_msg);
void *async_conn = conn;
int enable = 0;
int sender = ais_msg->sender.pid;
send_ipc_ack(conn);
msg = NULL;
if (ais_str_eq("true", data)) {
enable = 1;
}
ais_info("%s node notifications for child %d (%p)",
enable ? "Enabling" : "Disabling", sender, async_conn);
if (enable) {
g_hash_table_replace(membership_notify_list, async_conn, async_conn);
} else {
g_hash_table_remove(membership_notify_list, async_conn);
}
ais_free(data);
}
void
pcmk_nodeid(void *conn, ais_void_ptr * msg)
{
static int counter = 0;
struct crm_ais_nodeid_resp_s resp;
ais_trace("Sending local nodeid: %d to %p[%d]", local_nodeid, conn, counter);
resp.header.id = crm_class_nodeid;
resp.header.size = sizeof(struct crm_ais_nodeid_resp_s);
resp.header.error = CS_OK;
resp.id = local_nodeid;
resp.counter = counter++;
memset(resp.uname, 0, MAX_NAME);
memcpy(resp.uname, local_uname, local_uname_len);
memset(resp.cname, 0, MAX_NAME);
memcpy(resp.cname, local_cname, local_cname_len);
pcmk_api->ipc_response_send(conn, &resp, resp.header.size);
}
static gboolean
ghash_send_update(gpointer key, gpointer value, gpointer data)
{
if (send_client_msg(value, crm_class_members, crm_msg_none, data) != 0) {
/* remove it */
return TRUE;
}
return FALSE;
}
void
send_member_notification(void)
{
char *update = pcmk_generate_membership_data();
ais_info("Sending membership update " U64T " to %d children",
membership_seq, g_hash_table_size(membership_notify_list));
g_hash_table_foreach_remove(membership_notify_list, ghash_send_update, update);
ais_free(update);
}
gboolean
check_message_sanity(const AIS_Message * msg, const char *data)
{
gboolean sane = TRUE;
gboolean repaired = FALSE;
int dest = msg->host.type;
int tmp_size = msg->header.size - sizeof(AIS_Message);
if (sane && msg->header.size == 0) {
ais_err("Message with no size");
sane = FALSE;
}
if (sane && msg->header.error != CS_OK) {
ais_err("Message header contains an error: %d", msg->header.error);
sane = FALSE;
}
AIS_CHECK(msg->header.size > sizeof(AIS_Message),
ais_err("Message %d size too small: %d < %llu",
msg->header.id, msg->header.size,
(unsigned long long) sizeof(AIS_Message));
return FALSE);
if (sane && ais_data_len(msg) != tmp_size) {
ais_warn("Message payload size is incorrect: expected %d, got %d", ais_data_len(msg),
tmp_size);
sane = TRUE;
}
if (sane && ais_data_len(msg) == 0) {
ais_err("Message with no payload");
sane = FALSE;
}
if (sane && data && msg->is_compressed == FALSE) {
int str_size = strlen(data) + 1;
if (ais_data_len(msg) != str_size) {
int lpc = 0;
ais_err("Message payload is corrupted: expected %d bytes, got %d",
ais_data_len(msg), str_size);
sane = FALSE;
for (lpc = (str_size - 10); lpc < msg->size; lpc++) {
if (lpc < 0) {
lpc = 0;
}
ais_trace("bad_data[%d]: %d / '%c'", lpc, data[lpc], data[lpc]);
}
}
}
if (sane == FALSE) {
AIS_CHECK(sane,
ais_err
("Invalid message %d: (dest=%s:%s, from=%s:%s.%d, compressed=%d, size=%d, total=%d)",
msg->id, ais_dest(&(msg->host)), msg_type2text(dest), ais_dest(&(msg->sender)),
msg_type2text(msg->sender.type), msg->sender.pid, msg->is_compressed,
ais_data_len(msg), msg->header.size));
} else if (repaired) {
ais_err
("Repaired message %d: (dest=%s:%s, from=%s:%s.%d, compressed=%d, size=%d, total=%d)",
msg->id, ais_dest(&(msg->host)), msg_type2text(dest), ais_dest(&(msg->sender)),
msg_type2text(msg->sender.type), msg->sender.pid, msg->is_compressed,
ais_data_len(msg), msg->header.size);
} else {
ais_trace
("Verified message %d: (dest=%s:%s, from=%s:%s.%d, compressed=%d, size=%d, total=%d)",
msg->id, ais_dest(&(msg->host)), msg_type2text(dest), ais_dest(&(msg->sender)),
msg_type2text(msg->sender.type), msg->sender.pid, msg->is_compressed,
ais_data_len(msg), msg->header.size);
}
return sane;
}
static int delivered_transient = 0;
static void
deliver_transient_msg(gpointer key, gpointer value, gpointer user_data)
{
int pid = GPOINTER_TO_INT(value);
AIS_Message *mutable = user_data;
if (pid == mutable->host.type) {
int rc = send_client_ipc(key, mutable);
delivered_transient++;
ais_info("Sent message to %s.%d (rc=%d)", ais_dest(&(mutable->host)), pid, rc);
if (rc != 0) {
ais_warn("Sending message to %s.%d failed (rc=%d)",
ais_dest(&(mutable->host)), pid, rc);
log_ais_message(LOG_DEBUG, mutable);
}
}
}
gboolean
route_ais_message(const AIS_Message * msg, gboolean local_origin)
{
int rc = 0;
int dest = msg->host.type;
const char *reason = "unknown";
AIS_Message *mutable = ais_msg_copy(msg);
static int service_id = SERVICE_ID_MAKE(PCMK_SERVICE_ID, 0);
ais_trace("Msg[%d] (dest=%s:%s, from=%s:%s.%d, remote=%s, size=%d)",
mutable->id, ais_dest(&(mutable->host)), msg_type2text(dest),
ais_dest(&(mutable->sender)), msg_type2text(mutable->sender.type),
mutable->sender.pid, local_origin ? "false" : "true", ais_data_len((mutable)));
if (local_origin == FALSE) {
if (mutable->host.size == 0 || ais_str_eq(local_uname, mutable->host.uname)) {
mutable->host.local = TRUE;
}
}
if (check_message_sanity(mutable, mutable->data) == FALSE) {
/* Don't send this message to anyone */
rc = 1;
goto bail;
}
if (mutable->host.local) {
void *conn = NULL;
const char *lookup = NULL;
int children_index = 0;
if (dest == crm_msg_ais) {
process_ais_message(mutable);
goto bail;
} else if (dest == crm_msg_lrmd) {
/* lrmd messages are routed via the crm */
dest = crm_msg_crmd;
} else if (dest == crm_msg_te) {
/* te messages are routed via the crm */
dest = crm_msg_crmd;
} else if (dest >= SIZEOF(pcmk_children)) {
/* Transient client */
delivered_transient = 0;
g_hash_table_foreach(ipc_client_list, deliver_transient_msg, mutable);
if (delivered_transient) {
ais_trace("Sent message to %d transient clients: %d", delivered_transient, dest);
goto bail;
} else {
/* try the crmd */
ais_trace("Sending message to transient client %d via crmd", dest);
dest = crm_msg_crmd;
}
} else if (dest == 0) {
ais_err("Invalid destination: %d", dest);
log_ais_message(LOG_ERR, mutable);
log_printf(LOG_ERR, "%s", get_ais_data(mutable));
rc = 1;
goto bail;
}
lookup = msg_type2text(dest);
if (dest == crm_msg_pe && ais_str_eq(pcmk_children[7].name, lookup)) {
children_index = 7;
} else {
children_index = dest;
}
conn = pcmk_children[children_index].async_conn;
if (mutable->header.id == service_id) {
mutable->header.id = 0; /* reset this back to zero for IPC messages */
} else if (mutable->header.id != 0) {
ais_err("reset header id back to zero from %d", mutable->header.id);
mutable->header.id = 0; /* reset this back to zero for IPC messages */
}
reason = "ipc delivery failed";
rc = send_client_ipc(conn, mutable);
} else if (local_origin) {
/* forward to other hosts */
ais_trace("Forwarding to cluster");
reason = "cluster delivery failed";
rc = send_plugin_msg_raw(mutable);
}
if (rc != 0) {
ais_warn("Sending message to %s.%s failed: %s (rc=%d)",
ais_dest(&(mutable->host)), msg_type2text(dest), reason, rc);
log_ais_message(LOG_DEBUG, mutable);
}
bail:
ais_free(mutable);
return rc == 0 ? TRUE : FALSE;
}
int
send_plugin_msg_raw(const AIS_Message * ais_msg)
{
int rc = 0;
struct iovec iovec;
static uint32_t msg_id = 0;
AIS_Message *mutable = ais_msg_copy(ais_msg);
AIS_ASSERT(local_nodeid != 0);
AIS_ASSERT(ais_msg->header.size == (sizeof(AIS_Message) + ais_data_len(ais_msg)));
if (mutable->id == 0) {
msg_id++;
AIS_CHECK(msg_id != 0 /* detect wrap-around */ ,
msg_id++; ais_err("Message ID wrapped around"));
mutable->id = msg_id;
}
mutable->header.error = CS_OK;
mutable->header.id = SERVICE_ID_MAKE(PCMK_SERVICE_ID, 0);
mutable->sender.id = local_nodeid;
mutable->sender.size = local_uname_len;
memset(mutable->sender.uname, 0, MAX_NAME);
memcpy(mutable->sender.uname, local_uname, mutable->sender.size);
iovec.iov_base = (char *)mutable;
iovec.iov_len = mutable->header.size;
ais_trace("Sending message (size=%u)", (unsigned int)iovec.iov_len);
rc = pcmk_api->totem_mcast(&iovec, 1, TOTEMPG_SAFE);
if (rc == 0 && mutable->is_compressed == FALSE) {
ais_trace("Message sent: %.80s", mutable->data);
}
AIS_CHECK(rc == 0, ais_err("Message not sent (%d): %.120s", rc, mutable->data));
ais_free(mutable);
return rc;
}
#define min(x,y) (x)<(y)?(x):(y)
void
send_cluster_id(void)
{
int rc = 0;
int len = 0;
time_t now = time(NULL);
struct iovec iovec;
struct crm_identify_msg_s *msg = NULL;
static time_t started = 0;
static uint64_t first_seq = 0;
AIS_ASSERT(local_nodeid != 0);
if (started == 0) {
started = now;
first_seq = membership_seq;
}
if (local_born_on == 0) {
if (started + 15 < now) {
ais_debug("Born-on set to: " U64T " (age)", first_seq);
local_born_on = first_seq;
} else if (have_reliable_membership_id) {
ais_debug("Born-on set to: " U64T " (peer)", membership_seq);
local_born_on = membership_seq;
} else {
ais_debug("Leaving born-on unset: " U64T, membership_seq);
}
}
ais_malloc0(msg, sizeof(struct crm_identify_msg_s));
msg->header.size = sizeof(struct crm_identify_msg_s);
msg->id = local_nodeid;
/* msg->header.error = CS_OK; */
msg->header.id = SERVICE_ID_MAKE(PCMK_SERVICE_ID, 1);
len = min(local_uname_len, MAX_NAME - 1);
memset(msg->uname, 0, MAX_NAME);
memcpy(msg->uname, local_uname, len);
len = min(strlen(VERSION), MAX_NAME - 1);
memset(msg->version, 0, MAX_NAME);
memcpy(msg->version, VERSION, len);
msg->votes = 1;
msg->pid = getpid();
msg->processes = get_process_list();
msg->born_on = local_born_on;
ais_debug("Local update: id=%u, born=" U64T ", seq=" U64T "",
local_nodeid, local_born_on, membership_seq);
update_member(local_nodeid, local_born_on, membership_seq, msg->votes, msg->processes, NULL,
NULL, VERSION);
iovec.iov_base = (char *)msg;
iovec.iov_len = msg->header.size;
rc = pcmk_api->totem_mcast(&iovec, 1, TOTEMPG_SAFE);
AIS_CHECK(rc == 0, ais_err("Message not sent (%d)", rc));
ais_free(msg);
}
static gboolean
ghash_send_removal(gpointer key, gpointer value, gpointer data)
{
send_quorum_details(value);
if (send_client_msg(value, crm_class_rmpeer, crm_msg_none, data) != 0) {
/* remove it */
return TRUE;
}
return FALSE;
}
void
ais_remove_peer(char *node_id)
{
uint32_t id = ais_get_int(node_id, NULL);
crm_node_t *node = g_hash_table_lookup(membership_list, GUINT_TO_POINTER(id));
if (node == NULL) {
ais_info("Peer %u is unknown", id);
} else if (ais_str_eq(CRM_NODE_MEMBER, node->state)) {
ais_warn("Peer %u/%s is still active", id, node->uname);
} else if (g_hash_table_remove(membership_list, GUINT_TO_POINTER(id))) {
plugin_expected_votes--;
ais_notice("Removed dead peer %u from the membership list", id);
ais_info("Sending removal of %u to %d children",
id, g_hash_table_size(membership_notify_list));
g_hash_table_foreach_remove(membership_notify_list, ghash_send_removal, node_id);
} else {
ais_warn("Peer %u/%s was not removed", id, node->uname);
}
}
void
ais_remove_peer_by_name(const char *node_name)
{
GHashTableIter iter;
gpointer key = 0;
crm_node_t *node = NULL;
GList *node_list = NULL;
g_hash_table_iter_init(&iter, membership_list);
while (g_hash_table_iter_next(&iter, &key, (void **)&node)) {
if (ais_str_eq(node_name, node->uname)) {
uint32_t node_id = GPOINTER_TO_UINT(key);
char *node_id_s = NULL;
ais_malloc0(node_id_s, 32);
snprintf(node_id_s, 31, "%u", node_id);
node_list = g_list_append(node_list, node_id_s);
}
}
if (node_list) {
GList *gIter = NULL;
for (gIter = node_list; gIter != NULL; gIter = gIter->next) {
char *node_id_s = gIter->data;
ais_remove_peer(node_id_s);
}
g_list_free_full(node_list, free);
} else {
ais_warn("Peer %s is unkown", node_name);
}
}
gboolean
process_ais_message(const AIS_Message * msg)
{
int len = ais_data_len(msg);
char *data = get_ais_data(msg);
do_ais_log(LOG_DEBUG,
"Msg[%d] (dest=%s:%s, from=%s:%s.%d, remote=%s, size=%d): %.90s",
msg->id, ais_dest(&(msg->host)), msg_type2text(msg->host.type),
ais_dest(&(msg->sender)), msg_type2text(msg->sender.type),
msg->sender.pid,
msg->sender.uname == local_uname ? "false" : "true", ais_data_len(msg), data);
if (data && len > 12 && strncmp("remove-peer:", data, 12) == 0) {
char *node = data + 12;
ais_remove_peer_by_name(node);
}
ais_free(data);
return TRUE;
}
static void
member_dump_fn(gpointer key, gpointer value, gpointer user_data)
{
crm_node_t *node = value;
ais_info(" node id:%u, uname=%s state=%s processes=%.16x born=" U64T " seen=" U64T
" addr=%s version=%s", node->id, node->uname ? node->uname : "-unknown-", node->state,
node->processes, node->born, node->last_seen, node->addr ? node->addr : "-unknown-",
node->version ? node->version : "-unknown-");
}
void
pcmk_exec_dump(void)
{
/* Called after SIG_USR2 */
process_ais_conf();
ais_info("Local id: %u, uname: %s, born: " U64T, local_nodeid, local_uname, local_born_on);
ais_info("Membership id: " U64T ", quorate: %s, expected: %u, actual: %u",
membership_seq, plugin_has_quorum()? "true" : "false",
plugin_expected_votes, plugin_has_votes);
g_hash_table_foreach(membership_list, member_dump_fn, NULL);
}