38 #include <sys/types.h> 44 #include <qb/qblist.h> 45 #include <qb/qbipc_common.h> 75 static uint8_t qdevice_can_operate = 1;
76 static void *qdevice_reg_conn = NULL;
77 static uint8_t qdevice_master_wins = 0;
79 static uint8_t two_node = 0;
81 static uint8_t wait_for_all = 0;
82 static uint8_t wait_for_all_status = 0;
85 static int lowest_node_id = -1;
86 static int highest_node_id = -1;
88 #define DEFAULT_LMS_WIN 10000 89 static uint8_t last_man_standing = 0;
92 static uint8_t allow_downscale = 0;
93 static uint32_t ev_barrier = 0;
95 static uint8_t ev_tracking = 0;
96 static uint32_t ev_tracking_barrier = 0;
97 static int ev_tracking_fd = -1;
112 struct qb_ipc_request_header header __attribute__((aligned(8)));
122 struct qb_ipc_request_header header __attribute__((aligned(8)));
128 struct qb_ipc_request_header header __attribute__((aligned(8)));
143 #define MESSAGE_REQ_EXEC_VOTEQUORUM_NODEINFO 0 144 #define MESSAGE_REQ_EXEC_VOTEQUORUM_RECONFIGURE 1 145 #define MESSAGE_REQ_EXEC_VOTEQUORUM_QDEVICE_REG 2 146 #define MESSAGE_REQ_EXEC_VOTEQUORUM_QDEVICE_RECONFIGURE 3 148 static void votequorum_exec_send_expectedvotes_notification(
void);
149 static int votequorum_exec_send_quorum_notification(
void *conn, uint64_t context);
150 static int votequorum_exec_send_nodelist_notification(
void *conn, uint64_t context);
152 #define VOTEQUORUM_RECONFIG_PARAM_EXPECTED_VOTES 1 153 #define VOTEQUORUM_RECONFIG_PARAM_NODE_VOTES 2 154 #define VOTEQUORUM_RECONFIG_PARAM_CANCEL_WFA 3 156 static int votequorum_exec_send_reconfigure(uint8_t
param,
unsigned int nodeid, uint32_t
value);
161 #define VOTEQUORUM_QDEVICE_OPERATION_UNREGISTER 0 162 #define VOTEQUORUM_QDEVICE_OPERATION_REGISTER 1 168 #define NODE_FLAGS_QUORATE 1 169 #define NODE_FLAGS_LEAVING 2 170 #define NODE_FLAGS_WFASTATUS 4 171 #define NODE_FLAGS_FIRST 8 172 #define NODE_FLAGS_QDEVICE_REGISTERED 16 173 #define NODE_FLAGS_QDEVICE_ALIVE 32 174 #define NODE_FLAGS_QDEVICE_CAST_VOTE 64 175 #define NODE_FLAGS_QDEVICE_MASTER_WINS 128 189 struct qb_list_head list;
196 static uint8_t quorum;
197 static uint8_t cluster_is_quorate;
204 static struct qb_list_head cluster_members_list;
208 static int quorum_members_entries = 0;
209 static int previous_quorum_members_entries = 0;
210 static int atb_nodelist_entries = 0;
217 static int cluster_nodes_entries = 0;
226 struct qb_list_head list;
230 static struct qb_list_head trackers_list;
237 static int qdevice_timer_set = 0;
239 static int last_man_standing_timer_set = 0;
240 static int sync_nodeinfo_sent = 0;
241 static int sync_wait_for_poll_or_timeout = 0;
247 static int sync_in_progress = 0;
249 static void votequorum_sync_init (
250 const unsigned int *trans_list,
251 size_t trans_list_entries,
252 const unsigned int *member_list,
253 size_t member_list_entries,
256 static int votequorum_sync_process (
void);
257 static void votequorum_sync_activate (
void);
258 static void votequorum_sync_abort (
void);
267 static int votequorum_exec_exit_fn (
void);
268 static int votequorum_exec_send_nodeinfo(uint32_t
nodeid);
270 static void message_handler_req_exec_votequorum_nodeinfo (
273 static void exec_votequorum_nodeinfo_endian_convert (
void *message);
275 static void message_handler_req_exec_votequorum_reconfigure (
278 static void exec_votequorum_reconfigure_endian_convert (
void *message);
280 static void message_handler_req_exec_votequorum_qdevice_reg (
283 static void exec_votequorum_qdevice_reg_endian_convert (
void *message);
285 static void message_handler_req_exec_votequorum_qdevice_reconfigure (
288 static void exec_votequorum_qdevice_reconfigure_endian_convert (
void *message);
294 .exec_endian_convert_fn = exec_votequorum_nodeinfo_endian_convert
297 .exec_handler_fn = message_handler_req_exec_votequorum_reconfigure,
298 .exec_endian_convert_fn = exec_votequorum_reconfigure_endian_convert
301 .exec_handler_fn = message_handler_req_exec_votequorum_qdevice_reg,
302 .exec_endian_convert_fn = exec_votequorum_qdevice_reg_endian_convert
305 .exec_handler_fn = message_handler_req_exec_votequorum_qdevice_reconfigure,
306 .exec_endian_convert_fn = exec_votequorum_qdevice_reconfigure_endian_convert
314 static int quorum_lib_init_fn (
void *conn);
316 static int quorum_lib_exit_fn (
void *conn);
318 static void qdevice_timer_fn(
void *arg);
320 static void message_handler_req_lib_votequorum_getinfo (
void *conn,
321 const void *message);
323 static void message_handler_req_lib_votequorum_setexpected (
void *conn,
324 const void *message);
326 static void message_handler_req_lib_votequorum_setvotes (
void *conn,
327 const void *message);
329 static void message_handler_req_lib_votequorum_trackstart (
void *conn,
330 const void *message);
332 static void message_handler_req_lib_votequorum_trackstop (
void *conn,
333 const void *message);
335 static void message_handler_req_lib_votequorum_qdevice_register (
void *conn,
336 const void *message);
338 static void message_handler_req_lib_votequorum_qdevice_unregister (
void *conn,
339 const void *message);
341 static void message_handler_req_lib_votequorum_qdevice_update (
void *conn,
342 const void *message);
344 static void message_handler_req_lib_votequorum_qdevice_poll (
void *conn,
345 const void *message);
347 static void message_handler_req_lib_votequorum_qdevice_master_wins (
void *conn,
348 const void *message);
357 .lib_handler_fn = message_handler_req_lib_votequorum_setexpected,
361 .lib_handler_fn = message_handler_req_lib_votequorum_setvotes,
365 .lib_handler_fn = message_handler_req_lib_votequorum_trackstart,
369 .lib_handler_fn = message_handler_req_lib_votequorum_trackstop,
373 .lib_handler_fn = message_handler_req_lib_votequorum_qdevice_register,
377 .lib_handler_fn = message_handler_req_lib_votequorum_qdevice_unregister,
381 .lib_handler_fn = message_handler_req_lib_votequorum_qdevice_update,
385 .lib_handler_fn = message_handler_req_lib_votequorum_qdevice_poll,
389 .lib_handler_fn = message_handler_req_lib_votequorum_qdevice_master_wins,
395 .
name =
"corosync vote quorum service v1.0",
398 .private_data_size =
sizeof (
struct quorum_pd),
401 .lib_init_fn = quorum_lib_init_fn,
402 .lib_exit_fn = quorum_lib_exit_fn,
403 .lib_engine = quorum_lib_service,
405 .exec_init_fn = votequorum_exec_init_fn,
406 .exec_exit_fn = votequorum_exec_exit_fn,
407 .exec_engine = votequorum_exec_engine,
409 .sync_init = votequorum_sync_init,
410 .sync_process = votequorum_sync_process,
411 .sync_activate = votequorum_sync_activate,
412 .sync_abort = votequorum_sync_abort
417 return (&votequorum_service_engine);
422 .
name =
"corosync_votequorum",
432 #define max(a,b) (((a) > (b)) ? (a) : (b)) 434 static void node_add_ordered(
struct cluster_node *newnode)
437 struct qb_list_head *tmp;
441 qb_list_for_each(tmp, &cluster_members_list) {
449 qb_list_add(&newnode->
list, &cluster_members_list);
451 qb_list_add_tail(&newnode->
list, &node->
list);
460 struct qb_list_head *tmp;
465 cl = (
struct cluster_node *)&cluster_nodes[cluster_nodes_entries];
466 cluster_nodes_entries++;
468 qb_list_for_each(tmp, &cluster_members_list) {
487 node_add_ordered(cl);
496 static struct cluster_node *find_node_by_nodeid(
unsigned int nodeid)
499 struct qb_list_head *tmp;
513 qb_list_for_each(tmp, &cluster_members_list) {
525 static void get_lowest_node_id(
void)
528 struct qb_list_head *tmp;
534 qb_list_for_each(tmp, &cluster_members_list) {
537 (node->
node_id < lowest_node_id)) {
538 lowest_node_id = node->
node_id;
547 static void get_highest_node_id(
void)
550 struct qb_list_head *tmp;
556 qb_list_for_each(tmp, &cluster_members_list) {
559 (node->
node_id > highest_node_id)) {
560 highest_node_id = node->
node_id;
569 static int check_low_node_id_partition(
void)
572 struct qb_list_head *tmp;
577 qb_list_for_each(tmp, &cluster_members_list) {
580 (node->
node_id == lowest_node_id)) {
589 static int check_high_node_id_partition(
void)
592 struct qb_list_head *tmp;
597 qb_list_for_each(tmp, &cluster_members_list) {
600 (node->
node_id == highest_node_id)) {
609 static int is_in_nodelist(
int nodeid,
unsigned int *members,
int entries)
614 for (i=0; i<entries; i++) {
615 if (nodeid == members[i]) {
637 static int check_auto_tie_breaker(
void)
644 res = check_low_node_id_partition();
650 res = check_high_node_id_partition();
657 for (i=0; i < atb_nodelist_entries; i++) {
658 if (is_in_nodelist(atb_nodelist[i], quorum_members, quorum_members_entries)) {
665 for (j=0; j<i; j++) {
666 if (is_in_nodelist(atb_nodelist[j], previous_quorum_members, previous_quorum_members_entries)) {
693 static void parse_atb_string(
char *atb_string)
701 if (!strcmp(atb_string,
"lowest"))
704 if (!strcmp(atb_string,
"highest"))
707 if (atoi(atb_string)) {
709 atb_nodelist_entries = 0;
712 num = strtol(ptr, &ptr, 10);
715 atb_nodelist[atb_nodelist_entries++] = num;
719 if (atb_nodelist_entries) {
728 log_printf(
LOGSYS_LEVEL_WARNING,
"auto_tie_breaker_nodes is not valid. It must be 'lowest', 'highest' or a space-separated list of node IDs. auto_tie_breaker is disabled");
734 static int check_qdevice_master(
void)
737 struct qb_list_head *tmp;
742 qb_list_for_each(tmp, &cluster_members_list) {
755 static void decode_flags(uint32_t
flags)
760 "flags: quorate: %s Leaving: %s WFA Status: %s First: %s Qdevice: %s QdeviceAlive: %s QdeviceCastVote: %s QdeviceMasterWins: %s",
776 static int load_ev_tracking_barrier(
void)
779 char filename[PATH_MAX];
783 snprintf(filename,
sizeof(filename) - 1,
"%s/ev_tracking",
get_state_dir());
785 ev_tracking_fd = open(filename, O_RDWR, 0700);
786 if (ev_tracking_fd != -1) {
787 res = read (ev_tracking_fd, &ev_tracking_barrier,
sizeof(uint32_t));
788 close(ev_tracking_fd);
789 if (res ==
sizeof (uint32_t)) {
795 ev_tracking_barrier = 0;
797 ev_tracking_fd = open (filename, O_CREAT|O_RDWR, 0700);
798 if (ev_tracking_fd != -1) {
799 res = write (ev_tracking_fd, &ev_tracking_barrier,
sizeof (uint32_t));
800 if ((res == -1) || (res !=
sizeof (uint32_t))) {
802 "Unable to write to %s", filename);
804 close(ev_tracking_fd);
809 "Unable to create %s file", filename);
816 static void update_wait_for_all_status(uint8_t wfa_status)
820 wait_for_all_status = wfa_status;
821 if (wait_for_all_status) {
827 wait_for_all_status);
832 static void update_two_node(
void)
851 static void update_qdevice_can_operate(uint8_t status)
855 qdevice_can_operate = status;
856 icmap_set_uint8(
"runtime.votequorum.qdevice_can_operate", qdevice_can_operate);
861 static void update_qdevice_master_wins(uint8_t allow)
865 qdevice_master_wins = allow;
866 icmap_set_uint8(
"runtime.votequorum.qdevice_master_wins", qdevice_master_wins);
871 static void update_ev_tracking_barrier(uint32_t ev_t_barrier)
877 ev_tracking_barrier = ev_t_barrier;
878 icmap_set_uint32(
"runtime.votequorum.ev_tracking_barrier", ev_tracking_barrier);
880 if (lseek (ev_tracking_fd, 0, SEEK_SET) != 0) {
882 "Unable to update ev_tracking_barrier on disk data!!!");
887 res = write (ev_tracking_fd, &ev_tracking_barrier,
sizeof (uint32_t));
888 if (res !=
sizeof (uint32_t)) {
890 "Unable to update ev_tracking_barrier on disk data!!!");
892 #ifdef HAVE_FDATASYNC 893 fdatasync(ev_tracking_fd);
895 fsync(ev_tracking_fd);
905 static int calculate_quorum(
int allow_decrease,
unsigned int max_expected,
unsigned int *ret_total_votes)
907 struct qb_list_head *nodelist;
909 unsigned int total_votes = 0;
910 unsigned int highest_expected = 0;
911 unsigned int newquorum, q1, q2;
912 unsigned int total_nodes = 0;
916 if ((allow_downscale) && (allow_decrease) && (max_expected)) {
917 max_expected =
max(ev_barrier, max_expected);
920 qb_list_for_each(nodelist, &cluster_members_list) {
921 node = qb_list_entry(nodelist,
struct cluster_node, list);
928 total_votes += node->
votes;
935 total_votes += qdevice->
votes;
939 if (max_expected > 0) {
940 highest_expected = max_expected;
947 q1 = (highest_expected + 2) / 2;
948 q2 = (total_votes + 2) / 2;
949 newquorum =
max(q1, q2);
955 if (!allow_decrease) {
956 newquorum =
max(quorum, newquorum);
966 if (two_node && total_nodes <= 2) {
970 if (ret_total_votes) {
971 *ret_total_votes = total_votes;
978 static void update_node_expected_votes(
int new_expected_votes)
980 struct qb_list_head *nodelist;
983 if (new_expected_votes) {
984 qb_list_for_each(nodelist, &cluster_members_list) {
985 node = qb_list_entry(nodelist,
struct cluster_node, list);
994 static void are_we_quorate(
unsigned int total_votes)
997 int quorum_change = 0;
1005 if ((wait_for_all) && (wait_for_all_status)) {
1008 "Waiting for all cluster members. " 1009 "Current votes: %d expected_votes: %d",
1011 cluster_is_quorate = 0;
1014 update_wait_for_all_status(0);
1017 if (quorum > total_votes) {
1021 get_lowest_node_id();
1022 get_highest_node_id();
1025 if ((auto_tie_breaker !=
ATB_NONE) &&
1029 (previous_quorum_members_entries - quorum_members_entries < quorum) &&
1030 (check_auto_tie_breaker() == 1)) {
1034 if ((qdevice_master_wins) &&
1036 (check_qdevice_master() == 1)) {
1041 if (cluster_is_quorate && !quorate) {
1045 if (!cluster_is_quorate && quorate) {
1051 if (cluster_is_quorate) {
1059 update_wait_for_all_status(0);
1061 update_wait_for_all_status(1);
1065 if ((quorum_change) &&
1066 (sync_in_progress == 0)) {
1067 quorum_callback(quorum_members, quorum_members_entries,
1068 cluster_is_quorate, &quorum_ringid);
1069 votequorum_exec_send_quorum_notification(NULL, 0L);
1075 static void get_total_votes(
unsigned int *totalvotes,
unsigned int *current_members)
1077 unsigned int total_votes = 0;
1078 unsigned int cluster_members = 0;
1079 struct qb_list_head *nodelist;
1084 qb_list_for_each(nodelist, &cluster_members_list) {
1085 node = qb_list_entry(nodelist,
struct cluster_node, list);
1088 total_votes += node->
votes;
1092 if (qdevice->
votes) {
1093 total_votes += qdevice->
votes;
1097 *totalvotes = total_votes;
1098 *current_members = cluster_members;
1106 static void recalculate_quorum(
int allow_decrease,
int by_current_nodes)
1108 unsigned int total_votes = 0;
1109 unsigned int cluster_members = 0;
1113 get_total_votes(&total_votes, &cluster_members);
1115 if (!by_current_nodes) {
1116 cluster_members = 0;
1125 votequorum_exec_send_expectedvotes_notification();
1128 if ((ev_tracking) &&
1133 quorum = calculate_quorum(allow_decrease, cluster_members, &total_votes);
1134 update_node_expected_votes(cluster_members);
1136 are_we_quorate(total_votes);
1145 static int votequorum_read_nodelist_configuration(uint32_t *
votes,
1147 uint32_t *expected_votes)
1150 const char *iter_key;
1152 uint32_t our_pos, node_pos, last_node_pos=-1;
1153 uint32_t nodecount = 0;
1154 uint32_t nodelist_expected_votes = 0;
1155 uint32_t node_votes = 0;
1162 "No nodelist defined or our node is not in the nodelist");
1170 res = sscanf(iter_key,
"nodelist.node.%u.%s", &node_pos, tmp_key);
1180 if (last_node_pos == node_pos) {
1183 last_node_pos = node_pos;
1192 nodelist_expected_votes = nodelist_expected_votes + node_votes;
1194 if (node_pos == our_pos) {
1195 *votes = node_votes;
1199 *expected_votes = nodelist_expected_votes;
1209 static int votequorum_qdevice_is_configured(uint32_t *qdevice_votes)
1211 char *qdevice_model = NULL;
1217 if (strlen(qdevice_model)) {
1219 *qdevice_votes = -1;
1227 update_qdevice_can_operate(1);
1231 free(qdevice_model);
1239 #define VOTEQUORUM_READCONFIG_STARTUP 0 1240 #define VOTEQUORUM_READCONFIG_RUNTIME 1 1242 static char *votequorum_readconfig(
int runtime)
1244 uint32_t node_votes = 0, qdevice_votes = 0;
1245 uint32_t node_expected_votes = 0, expected_votes = 0;
1246 uint32_t node_count = 0;
1248 int have_nodelist, have_qdevice;
1249 char *atb_string = NULL;
1267 auto_tie_breaker = initial_auto_tie_breaker;
1275 have_nodelist = votequorum_read_nodelist_configuration(&node_votes, &node_count, &node_expected_votes);
1276 have_qdevice = votequorum_qdevice_is_configured(&qdevice_votes);
1283 if ((!have_nodelist) && (!expected_votes)) {
1285 error = (
char *)
"configuration error: nodelist or quorum.expected_votes must be configured!";
1298 if ((two_node) && (have_qdevice)) {
1300 error = (
char *)
"configuration error: two_node and quorum device cannot be configured at the same time!";
1309 update_qdevice_can_operate(0);
1325 icmap_get_uint32(
"quorum.last_man_standing_window", &last_man_standing_window);
1339 "auto_tie_breaker_node: is meaningless if auto_tie_breaker is set to 0");
1343 if (atb && atb_string) {
1344 parse_atb_string(atb_string);
1347 initial_auto_tie_breaker = auto_tie_breaker;
1350 if (allow_downscale) {
1355 if (load_ev_tracking_barrier() < 0) {
1357 return ((
char *)
"Unable to load ev_tracking file!");
1359 update_ev_tracking_barrier(ev_tracking_barrier);
1367 if (two_node && auto_tie_breaker !=
ATB_NONE) {
1377 if ((auto_tie_breaker !=
ATB_NONE) && (node_expected_votes % 2) &&
1379 if (last_man_standing) {
1388 error = (
char *)
"configuration error: auto_tie_breaker & last_man_standing not available in odd sized cluster";
1407 if ((have_qdevice) && (last_man_standing)) {
1409 error = (
char *)
"configuration error: quorum.device is not compatible with last_man_standing";
1414 update_qdevice_can_operate(0);
1418 if ((have_qdevice) && (auto_tie_breaker !=
ATB_NONE)) {
1420 error = (
char *)
"configuration error: quorum.device is not compatible with auto_tie_breaker";
1425 update_qdevice_can_operate(0);
1429 if ((have_qdevice) && (allow_downscale)) {
1431 error = (
char *)
"configuration error: quorum.device is not compatible with allow_downscale";
1436 update_qdevice_can_operate(0);
1445 if ((expected_votes) && (have_qdevice) && (qdevice_votes == -1)) {
1447 error = (
char *)
"configuration error: quorum.device.votes must be specified when quorum.expected_votes is set";
1452 update_qdevice_can_operate(0);
1461 if ((have_qdevice) &&
1462 (qdevice_votes == -1) &&
1464 (node_count != node_expected_votes)) {
1466 error = (
char *)
"configuration error: quorum.device.votes must be specified when not all nodes votes 1";
1471 update_qdevice_can_operate(0);
1479 if ((qdevice_votes > 0) && (expected_votes)) {
1480 int delta = expected_votes - qdevice_votes;
1483 error = (
char *)
"configuration error: quorum.device.votes is too high or expected_votes is too low";
1488 update_qdevice_can_operate(0);
1497 if ((have_qdevice) &&
1498 (qdevice_votes == -1) &&
1499 (!expected_votes) &&
1501 (node_count == node_expected_votes)) {
1502 qdevice_votes = node_expected_votes - 1;
1503 node_expected_votes = node_expected_votes + qdevice_votes;
1509 log_printf(
LOGSYS_LEVEL_DEBUG,
"ev_tracking=%d, ev_tracking_barrier = %d: expected_votes = %d\n", ev_tracking, ev_tracking_barrier, expected_votes);
1512 expected_votes = ev_tracking_barrier;
1515 if (have_nodelist) {
1516 us->
votes = node_votes;
1523 if (expected_votes) {
1531 if (!have_qdevice) {
1535 if (qdevice_votes != -1) {
1536 qdevice->
votes = qdevice_votes;
1542 update_wait_for_all_status(1);
1550 static void votequorum_refresh_config(
1552 const char *key_name,
1557 int old_votes, old_expected_votes;
1567 if (
icmap_get_uint8(
"config.totemconfig_reload_in_progress", &reloading) ==
CS_OK && reloading) {
1572 if (strcmp(key_name,
"quorum.cancel_wait_for_all") == 0 &&
1582 old_votes = us->
votes;
1593 votequorum_exec_send_nodeinfo(us->
node_id);
1595 if (us->
votes != old_votes) {
1611 static void votequorum_exec_add_config_notification(
void)
1621 votequorum_refresh_config,
1623 &icmap_track_nodelist);
1627 votequorum_refresh_config,
1629 &icmap_track_quorum);
1633 votequorum_refresh_config,
1635 &icmap_track_reload);
1644 static int votequorum_exec_send_reconfigure(uint8_t
param,
unsigned int nodeid, uint32_t
value)
1647 struct iovec iov[1];
1655 req_exec_quorum_reconfigure.
_pad0 = 0;
1656 req_exec_quorum_reconfigure.
_pad1 = 0;
1657 req_exec_quorum_reconfigure.
_pad2 = 0;
1660 req_exec_quorum_reconfigure.header.size =
sizeof(req_exec_quorum_reconfigure);
1662 iov[0].iov_base = (
void *)&req_exec_quorum_reconfigure;
1663 iov[0].iov_len =
sizeof(req_exec_quorum_reconfigure);
1671 static int votequorum_exec_send_nodeinfo(uint32_t nodeid)
1674 struct iovec iov[1];
1680 node = find_node_by_nodeid(nodeid);
1686 req_exec_quorum_nodeinfo.
votes = node->
votes;
1688 req_exec_quorum_nodeinfo.
flags = node->
flags;
1690 decode_flags(node->
flags);
1694 req_exec_quorum_nodeinfo.header.size =
sizeof(req_exec_quorum_nodeinfo);
1696 iov[0].iov_base = (
void *)&req_exec_quorum_nodeinfo;
1697 iov[0].iov_len =
sizeof(req_exec_quorum_nodeinfo);
1705 static int votequorum_exec_send_qdevice_reconfigure(
const char *
oldname,
const char *
newname)
1708 struct iovec iov[1];
1714 req_exec_quorum_qdevice_reconfigure.header.size =
sizeof(req_exec_quorum_qdevice_reconfigure);
1715 strcpy(req_exec_quorum_qdevice_reconfigure.
oldname, oldname);
1716 strcpy(req_exec_quorum_qdevice_reconfigure.
newname, newname);
1718 iov[0].iov_base = (
void *)&req_exec_quorum_qdevice_reconfigure;
1719 iov[0].iov_len =
sizeof(req_exec_quorum_qdevice_reconfigure);
1727 static int votequorum_exec_send_qdevice_reg(uint32_t
operation,
const char *qdevice_name_req)
1730 struct iovec iov[1];
1736 req_exec_quorum_qdevice_reg.header.size =
sizeof(req_exec_quorum_qdevice_reg);
1738 strcpy(req_exec_quorum_qdevice_reg.
qdevice_name, qdevice_name_req);
1740 iov[0].iov_base = (
void *)&req_exec_quorum_qdevice_reg;
1741 iov[0].iov_len =
sizeof(req_exec_quorum_qdevice_reg);
1749 static int votequorum_exec_send_quorum_notification(
void *conn, uint64_t context)
1752 struct qb_list_head *tmp;
1755 int cluster_members = 0;
1763 qb_list_for_each(tmp, &cluster_members_list) {
1774 res_lib_votequorum_notification->quorate = cluster_is_quorate;
1775 res_lib_votequorum_notification->context = context;
1776 res_lib_votequorum_notification->node_list_entries = cluster_members;
1778 res_lib_votequorum_notification->header.size = size;
1779 res_lib_votequorum_notification->header.error =
CS_OK;
1782 qb_list_for_each(tmp, &cluster_members_list) {
1784 res_lib_votequorum_notification->node_list[i].nodeid = node->
node_id;
1785 res_lib_votequorum_notification->node_list[i++].state = node->
state;
1789 res_lib_votequorum_notification->node_list[i++].state = qdevice->
state;
1800 qb_list_for_each(tmp, &trackers_list) {
1801 qpd = qb_list_entry(tmp,
struct quorum_pd, list);
1812 static int votequorum_exec_send_nodelist_notification(
void *conn, uint64_t context)
1817 struct qb_list_head *tmp;
1827 res_lib_votequorum_notification->node_list_entries = quorum_members_entries;
1828 res_lib_votequorum_notification->ring_id.nodeid = quorum_ringid.
nodeid;
1829 res_lib_votequorum_notification->ring_id.seq = quorum_ringid.
seq;
1830 res_lib_votequorum_notification->context = context;
1832 for (i=0; i<quorum_members_entries; i++) {
1833 res_lib_votequorum_notification->node_list[i] = quorum_members[i];
1837 res_lib_votequorum_notification->header.size = size;
1838 res_lib_votequorum_notification->header.error =
CS_OK;
1848 qb_list_for_each(tmp, &trackers_list) {
1849 qpd = qb_list_entry(tmp,
struct quorum_pd, list);
1860 static void votequorum_exec_send_expectedvotes_notification(
void)
1864 struct qb_list_head *tmp;
1871 res_lib_votequorum_expectedvotes_notification.header.size =
sizeof(res_lib_votequorum_expectedvotes_notification);
1872 res_lib_votequorum_expectedvotes_notification.header.error =
CS_OK;
1873 res_lib_votequorum_expectedvotes_notification.expected_votes = us->
expected_votes;
1875 qb_list_for_each(tmp, &trackers_list) {
1876 qpd = qb_list_entry(tmp,
struct quorum_pd, list);
1877 res_lib_votequorum_expectedvotes_notification.context = qpd->
tracking_context;
1879 sizeof(
struct res_lib_votequorum_expectedvotes_notification));
1885 static void exec_votequorum_qdevice_reconfigure_endian_convert (
void *message)
1892 static void message_handler_req_exec_votequorum_qdevice_reconfigure (
1893 const void *message,
1894 unsigned int nodeid)
1902 req_exec_quorum_qdevice_reconfigure->
oldname,
1903 req_exec_quorum_qdevice_reconfigure->
newname);
1905 if (!strcmp(req_exec_quorum_qdevice_reconfigure->
oldname, qdevice_name)) {
1908 strcpy(qdevice_name, req_exec_quorum_qdevice_reconfigure->
newname);
1919 static void exec_votequorum_qdevice_reg_endian_convert (
void *message)
1930 static void message_handler_req_exec_votequorum_qdevice_reg (
1931 const void *message,
1932 unsigned int nodeid)
1936 int wipe_qdevice_name = 1;
1938 struct qb_list_head *tmp;
1947 switch(req_exec_quorum_qdevice_reg->
operation)
1951 if (!strlen(qdevice_name)) {
1953 strcpy(qdevice_name, req_exec_quorum_qdevice_reg->
qdevice_name);
1972 if (!qdevice_reg_conn) {
1981 if (!strlen(qdevice_name)) {
1982 strcpy(qdevice_name, req_exec_quorum_qdevice_reg->
qdevice_name);
1988 if ((!strncmp(req_exec_quorum_qdevice_reg->
qdevice_name,
1992 votequorum_exec_send_nodeinfo(us->
node_id);
1995 "A new qdevice with different name (new: %s old: %s) is trying to register!",
1996 req_exec_quorum_qdevice_reg->
qdevice_name, qdevice_name);
2000 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2002 res_lib_votequorum_status.header.error = error;
2003 corosync_api->
ipc_response_send(qdevice_reg_conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2004 qdevice_reg_conn = NULL;
2007 qb_list_for_each(tmp, &cluster_members_list) {
2011 wipe_qdevice_name = 0;
2015 if (wipe_qdevice_name) {
2024 static void exec_votequorum_nodeinfo_endian_convert (
void *message)
2038 static void message_handler_req_exec_votequorum_nodeinfo (
2039 const void *message,
2040 unsigned int sender_nodeid)
2047 nodestate_t old_state;
2049 int allow_downgrade = 0;
2051 unsigned int nodeid = req_exec_quorum_nodeinfo->
nodeid;
2058 req_exec_quorum_nodeinfo->
votes,
2060 req_exec_quorum_nodeinfo->
flags);
2063 decode_flags(req_exec_quorum_nodeinfo->
flags);
2066 node = find_node_by_nodeid(nodeid);
2068 node = allocate_node(nodeid);
2083 old_votes = node->
votes;
2085 old_state = node->
state;
2086 old_flags = node->
flags;
2090 struct cluster_node *sender_node = find_node_by_nodeid(sender_nodeid);
2092 assert(sender_node != NULL);
2094 if ((!cluster_is_quorate) &&
2096 node->
votes = req_exec_quorum_nodeinfo->
votes;
2104 node->
flags = req_exec_quorum_nodeinfo->
flags;
2105 node->
votes = req_exec_quorum_nodeinfo->
votes;
2110 allow_downgrade = 1;
2114 if ((!cluster_is_quorate) &&
2116 allow_downgrade = 1;
2126 if ((last_man_standing) && (node->
votes > 1)) {
2128 "cluster nodes votes are set to 1. Disabling LMS.");
2129 last_man_standing = 0;
2130 if (last_man_standing_timer_set) {
2132 last_man_standing_timer_set = 0;
2140 (old_votes != node->
votes) ||
2142 (old_flags != node->
flags) ||
2143 (old_state != node->
state)) {
2144 recalculate_quorum(allow_downgrade, by_node);
2147 if ((wait_for_all) &&
2150 update_wait_for_all_status(0);
2156 static void exec_votequorum_reconfigure_endian_convert (
void *message)
2168 static void message_handler_req_exec_votequorum_reconfigure (
2169 const void *message,
2170 unsigned int nodeid)
2178 nodeid, req_exec_quorum_reconfigure->
nodeid);
2180 switch(req_exec_quorum_reconfigure->
param)
2183 update_node_expected_votes(req_exec_quorum_reconfigure->
value);
2184 votequorum_exec_send_expectedvotes_notification();
2185 update_ev_barrier(req_exec_quorum_reconfigure->
value);
2189 recalculate_quorum(1, 0);
2193 node = find_node_by_nodeid(req_exec_quorum_reconfigure->
nodeid);
2198 node->
votes = req_exec_quorum_reconfigure->
value;
2199 recalculate_quorum(1, 0);
2203 update_wait_for_all_status(0);
2205 req_exec_quorum_reconfigure->
nodeid);
2206 recalculate_quorum(0, 0);
2215 static int votequorum_exec_exit_fn (
void)
2225 if (allow_downscale) {
2227 ret = votequorum_exec_send_nodeinfo(us->
node_id);
2230 if ((ev_tracking) && (ev_tracking_fd != -1)) {
2231 close(ev_tracking_fd);
2239 static void votequorum_set_icmap_ro_keys(
void)
2259 qb_list_init(&cluster_members_list);
2260 qb_list_init(&trackers_list);
2263 memset(cluster_nodes, 0,
sizeof(cluster_nodes));
2271 return ((
char *)
"Could not allocate node.");
2282 return ((
char *)
"Could not allocate node.");
2295 recalculate_quorum(0, 0);
2300 votequorum_set_icmap_ro_keys();
2305 votequorum_exec_add_config_notification();
2310 votequorum_exec_send_nodeinfo(us->
node_id);
2321 static void votequorum_last_man_standing_timer_fn(
void *arg)
2325 last_man_standing_timer_set = 0;
2326 if (cluster_is_quorate) {
2327 recalculate_quorum(1,1);
2333 static void votequorum_sync_init (
2334 const unsigned int *trans_list,
size_t trans_list_entries,
2335 const unsigned int *member_list,
size_t member_list_entries,
2345 sync_in_progress = 1;
2346 sync_nodeinfo_sent = 0;
2347 sync_wait_for_poll_or_timeout = 0;
2349 if (member_list_entries > 1) {
2359 for (i = 0; i < quorum_members_entries; i++) {
2361 for (j = 0; j < member_list_entries; j++) {
2362 if (quorum_members[i] == member_list[j]) {
2369 node = find_node_by_nodeid(quorum_members[i]);
2376 if (last_man_standing) {
2377 if (((member_list_entries >= quorum) && (left_nodes)) ||
2378 ((member_list_entries <= quorum) && (auto_tie_breaker !=
ATB_NONE) && (check_low_node_id_partition() == 1))) {
2379 if (last_man_standing_timer_set) {
2381 last_man_standing_timer_set = 0;
2383 corosync_api->
timer_add_duration((
unsigned long long)last_man_standing_window*1000000,
2384 NULL, votequorum_last_man_standing_timer_fn,
2385 &last_man_standing_timer);
2386 last_man_standing_timer_set = 1;
2390 memcpy(previous_quorum_members, quorum_members,
sizeof(
unsigned int) * quorum_members_entries);
2391 previous_quorum_members_entries = quorum_members_entries;
2393 memcpy(quorum_members, member_list,
sizeof(
unsigned int) * member_list_entries);
2394 quorum_members_entries = member_list_entries;
2395 memcpy(&quorum_ringid, ring_id,
sizeof(*ring_id));
2401 if (qdevice_timer_set) {
2404 corosync_api->
timer_add_duration((
unsigned long long)qdevice_sync_timeout*1000000, qdevice,
2405 qdevice_timer_fn, &qdevice_timer);
2406 qdevice_timer_set = 1;
2407 sync_wait_for_poll_or_timeout = 1;
2410 qdevice_name, qdevice_sync_timeout);
2416 static int votequorum_sync_process (
void)
2418 if (!sync_nodeinfo_sent) {
2419 votequorum_exec_send_nodeinfo(us->
node_id);
2421 if (strlen(qdevice_name)) {
2425 votequorum_exec_send_nodelist_notification(NULL, 0LL);
2426 sync_nodeinfo_sent = 1;
2440 static void votequorum_sync_activate (
void)
2442 recalculate_quorum(0, 0);
2443 quorum_callback(quorum_members, quorum_members_entries,
2444 cluster_is_quorate, &quorum_ringid);
2445 votequorum_exec_send_quorum_notification(NULL, 0L);
2447 sync_in_progress = 0;
2450 static void votequorum_sync_abort (
void)
2462 if (q_set_quorate_fn == NULL) {
2463 return ((
char *)
"Quorate function not set");
2467 quorum_callback = q_set_quorate_fn;
2470 &votequorum_service[0]);
2484 static int quorum_lib_init_fn (
void *conn)
2490 qb_list_init (&pd->
list);
2497 static int quorum_lib_exit_fn (
void *conn)
2504 qb_list_del (&quorum_pd->
list);
2505 qb_list_init (&quorum_pd->
list);
2517 static void qdevice_timer_fn(
void *arg)
2522 (!qdevice_timer_set)) {
2530 votequorum_exec_send_nodeinfo(us->
node_id);
2532 qdevice_timer_set = 0;
2533 sync_wait_for_poll_or_timeout = 0;
2542 static void message_handler_req_lib_votequorum_getinfo (
void *conn,
const void *message)
2547 unsigned int highest_expected = 0;
2548 unsigned int total_votes = 0;
2550 uint32_t nodeid = req_lib_votequorum_getinfo->
nodeid;
2560 node = find_node_by_nodeid(nodeid);
2563 struct qb_list_head *nodelist;
2565 qb_list_for_each(nodelist, &cluster_members_list) {
2566 iternode = qb_list_entry(nodelist,
struct cluster_node, list);
2571 total_votes += iternode->
votes;
2576 total_votes += qdevice->
votes;
2579 switch(node->
state) {
2590 res_lib_votequorum_getinfo.
state = node->
state;
2593 res_lib_votequorum_getinfo.
state = node->
state;
2594 res_lib_votequorum_getinfo.
votes = node->
votes;
2598 res_lib_votequorum_getinfo.
quorum = quorum;
2599 res_lib_votequorum_getinfo.
total_votes = total_votes;
2600 res_lib_votequorum_getinfo.
flags = 0;
2606 if (cluster_is_quorate) {
2612 if (last_man_standing) {
2615 if (auto_tie_breaker !=
ATB_NONE) {
2618 if (allow_downscale) {
2623 strcpy(res_lib_votequorum_getinfo.
qdevice_name, qdevice_name);
2642 res_lib_votequorum_getinfo.header.size =
sizeof(res_lib_votequorum_getinfo);
2644 res_lib_votequorum_getinfo.header.error = error;
2645 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_getinfo,
sizeof(res_lib_votequorum_getinfo));
2651 static void message_handler_req_lib_votequorum_setexpected (
void *conn,
const void *message)
2656 unsigned int newquorum;
2657 unsigned int total_votes;
2658 uint8_t allow_downscale_status = 0;
2662 allow_downscale_status = allow_downscale;
2663 allow_downscale = 0;
2668 newquorum = calculate_quorum(1, req_lib_votequorum_setexpected->
expected_votes, &total_votes);
2669 allow_downscale = allow_downscale_status;
2670 if (newquorum < total_votes / 2 ||
2671 newquorum > total_votes) {
2675 update_node_expected_votes(req_lib_votequorum_setexpected->
expected_votes);
2683 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2685 res_lib_votequorum_status.header.error = error;
2686 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2691 static void message_handler_req_lib_votequorum_setvotes (
void *conn,
const void *message)
2696 unsigned int newquorum;
2697 unsigned int total_votes;
2698 unsigned int saved_votes;
2704 nodeid = req_lib_votequorum_setvotes->
nodeid;
2705 node = find_node_by_nodeid(nodeid);
2714 saved_votes = node->
votes;
2715 node->
votes = req_lib_votequorum_setvotes->
votes;
2717 newquorum = calculate_quorum(1, 0, &total_votes);
2719 if (newquorum < total_votes / 2 ||
2720 newquorum > total_votes) {
2721 node->
votes = saved_votes;
2727 req_lib_votequorum_setvotes->
votes)) {
2732 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2734 res_lib_votequorum_status.header.error = error;
2735 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2740 static void message_handler_req_lib_votequorum_trackstart (
void *conn,
2741 const void *message)
2757 votequorum_exec_send_nodelist_notification(conn, req_lib_votequorum_trackstart->
context);
2758 votequorum_exec_send_quorum_notification(conn, req_lib_votequorum_trackstart->
context);
2776 qb_list_add (&quorum_pd->
list, &trackers_list);
2780 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2782 res_lib_votequorum_status.header.error = error;
2783 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2788 static void message_handler_req_lib_votequorum_trackstop (
void *conn,
2789 const void *message)
2800 qb_list_del (&quorum_pd->
list);
2801 qb_list_init (&quorum_pd->
list);
2806 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2808 res_lib_votequorum_status.header.error = error;
2809 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2814 static void message_handler_req_lib_votequorum_qdevice_register (
void *conn,
2815 const void *message)
2823 if (!qdevice_can_operate) {
2824 log_printf(
LOGSYS_LEVEL_INFO,
"Registration of quorum device is disabled by incorrect corosync.conf. See logs for more information");
2830 if ((!strncmp(req_lib_votequorum_qdevice_register->
name,
2835 "A new qdevice with different name (new: %s old: %s) is trying to re-register!",
2836 req_lib_votequorum_qdevice_register->
name, qdevice_name);
2841 if (qdevice_reg_conn != NULL) {
2843 "Registration request already in progress");
2847 qdevice_reg_conn = conn;
2849 req_lib_votequorum_qdevice_register->
name) != 0) {
2851 "Unable to send qdevice registration request to cluster");
2853 qdevice_reg_conn = NULL;
2862 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2864 res_lib_votequorum_status.header.error = error;
2865 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2870 static void message_handler_req_lib_votequorum_qdevice_unregister (
void *conn,
2871 const void *message)
2884 if (qdevice_timer_set) {
2886 qdevice_timer_set = 0;
2887 sync_wait_for_poll_or_timeout = 0;
2893 votequorum_exec_send_nodeinfo(us->
node_id);
2895 req_lib_votequorum_qdevice_unregister->
name);
2901 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2903 res_lib_votequorum_status.header.error = error;
2904 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2909 static void message_handler_req_lib_votequorum_qdevice_update (
void *conn,
2910 const void *message)
2923 votequorum_exec_send_qdevice_reconfigure(req_lib_votequorum_qdevice_update->
oldname,
2924 req_lib_votequorum_qdevice_update->
newname);
2930 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2932 res_lib_votequorum_status.header.error = error;
2933 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
2938 static void message_handler_req_lib_votequorum_qdevice_poll (
void *conn,
2939 const void *message)
2948 if (!qdevice_can_operate) {
2954 if (!(req_lib_votequorum_qdevice_poll->ring_id.nodeid == quorum_ringid.
nodeid &&
2955 req_lib_votequorum_qdevice_poll->ring_id.seq == quorum_ringid.
seq)) {
2958 req_lib_votequorum_qdevice_poll->ring_id.nodeid, req_lib_votequorum_qdevice_poll->ring_id.seq,
2959 quorum_ringid.
nodeid, quorum_ringid.
seq);
2968 if (qdevice_timer_set) {
2970 qdevice_timer_set = 0;
2973 oldflags = us->
flags;
2977 if (req_lib_votequorum_qdevice_poll->
cast_vote) {
2983 if (us->
flags != oldflags) {
2984 votequorum_exec_send_nodeinfo(us->
node_id);
2987 corosync_api->
timer_add_duration((
unsigned long long)qdevice_timeout*1000000, qdevice,
2988 qdevice_timer_fn, &qdevice_timer);
2989 qdevice_timer_set = 1;
2990 sync_wait_for_poll_or_timeout = 0;
2996 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
2998 res_lib_votequorum_status.header.error = error;
2999 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
3004 static void message_handler_req_lib_votequorum_qdevice_master_wins (
void *conn,
3005 const void *message)
3010 uint32_t oldflags = us->
flags;
3014 if (!qdevice_can_operate) {
3025 if (req_lib_votequorum_qdevice_master_wins->
allow) {
3031 if (us->
flags != oldflags) {
3032 votequorum_exec_send_nodeinfo(us->
node_id);
3035 update_qdevice_master_wins(req_lib_votequorum_qdevice_master_wins->
allow);
3041 res_lib_votequorum_status.header.size =
sizeof(res_lib_votequorum_status);
3043 res_lib_votequorum_status.header.error = error;
3044 corosync_api->
ipc_response_send(conn, &res_lib_votequorum_status,
sizeof(res_lib_votequorum_status));
char name[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
char newname[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
void *(* ipc_private_data_get)(void *conn)
#define VOTEQUORUM_INFO_QUORATE
char oldname[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
#define VOTEQUORUM_READCONFIG_STARTUP
void(* timer_delete)(corosync_timer_handle_t timer_handle)
int(* timer_add_duration)(unsigned long long nanoseconds_in_future, void *data, void(*timer_nf)(void *data), corosync_timer_handle_t *handle)
const char * icmap_iter_next(icmap_iter_t iter, size_t *value_len, icmap_value_types_t *type)
Return next item in iterator iter.
#define NODE_FLAGS_WFASTATUS
#define LOGSYS_LEVEL_INFO
#define NODE_FLAGS_QUORATE
#define VOTEQUORUM_QDEVICE_DEFAULT_SYNC_TIMEOUT
The corosync_service_engine struct.
void icmap_iter_finalize(icmap_iter_t iter)
Finalize iterator.
The req_lib_votequorum_qdevice_master_wins struct.
#define VOTEQUORUM_QDEVICE_OPERATION_UNREGISTER
#define MESSAGE_REQ_EXEC_VOTEQUORUM_RECONFIGURE
int(* ipc_response_send)(void *conn, const void *msg, size_t mlen)
char * votequorum_init(struct corosync_api_v1 *api, quorum_set_quorate_fn_t q_set_quorate_fn)
#define VOTEQUORUM_RECONFIG_PARAM_CANCEL_WFA
char name[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
char qdevice_name[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
The req_lib_votequorum_qdevice_unregister struct.
#define NODE_FLAGS_QDEVICE_MASTER_WINS
The res_lib_votequorum_quorum_notification struct.
The corosync_lib_handler struct.
unsigned int highest_expected
#define VOTEQUORUM_INFO_LAST_MAN_STANDING
#define VOTEQUORUM_INFO_WAIT_FOR_ALL
#define NODE_FLAGS_QDEVICE_CAST_VOTE
The res_lib_votequorum_status struct.
char name[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
#define MESSAGE_REQ_EXEC_VOTEQUORUM_QDEVICE_RECONFIGURE
The corosync_exec_handler struct.
#define VOTEQUORUM_INFO_TWONODE
int(* totem_mcast)(const struct iovec *iovec, unsigned int iov_len, unsigned int guarantee)
char qdevice_name[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
#define VOTEQUORUM_INFO_QDEVICE_REGISTERED
#define log_printf(level, format, args...)
unsigned int expected_votes
void(* exec_handler_fn)(const void *msg, unsigned int nodeid)
#define VOTEQUORUM_QDEVICE_NODEID
#define VOTEQUORUM_INFO_QDEVICE_MASTER_WINS
#define VOTEQUORUM_NODESTATE_MEMBER
#define SERVICE_ID_MAKE(a, b)
#define ICMAP_TRACK_DELETE
#define ICMAP_KEYNAME_MAXLEN
Maximum length of key in icmap.
void(* quorum_set_quorate_fn_t)(const unsigned int *view_list, size_t view_list_entries, int quorate, struct memb_ring_id *)
#define VOTEQUORUM_QDEVICE_OPERATION_REGISTER
cs_error_t icmap_get_uint8(const char *key_name, uint8_t *u8)
void(* error_memory_failure)(void) __attribute__((noreturn))
#define VOTEQUORUM_INFO_ALLOW_DOWNSCALE
#define LOGSYS_LEVEL_WARNING
#define ICMAP_TRACK_MODIFY
#define VOTEQUORUM_INFO_QDEVICE_ALIVE
cs_error_t icmap_set_uint32(const char *key_name, uint32_t value)
unsigned int(* totem_nodeid_get)(void)
#define CS_TRACK_CHANGES_ONLY
The req_lib_votequorum_getinfo struct.
char name[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
#define LOGSYS_LEVEL_ERROR
#define COROSYNC_LIB_FLOW_CONTROL_NOT_REQUIRED
The req_lib_votequorum_qdevice_update struct.
cs_error_t
The cs_error_t enum.
unsigned char track_flags
#define LOGSYS_LEVEL_DEBUG
LOGSYS_DECLARE_SUBSYS("VOTEQ")
The req_lib_votequorum_setvotes struct.
The corosync_api_v1 struct.
cs_error_t icmap_get_uint32(const char *key_name, uint32_t *u32)
The req_lib_votequorum_setexpected struct.
struct totem_message_header header
#define swab32(x)
The swab32 macro.
#define VOTEQUORUM_INFO_AUTO_TIE_BREAKER
struct corosync_service_engine * votequorum_get_service_engine_ver0(void)
The res_lib_votequorum_expectedvotes_notification struct.
The req_lib_votequorum_qdevice_register struct.
char * corosync_service_link_and_init(struct corosync_api_v1 *corosync_api, struct default_service *service)
Link and initialize a service.
char newname[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
#define VOTEQUORUM_NODESTATE_LEAVING
#define PROCESSOR_COUNT_MAX
unsigned int qdevice_votes
#define MESSAGE_REQ_EXEC_VOTEQUORUM_QDEVICE_REG
#define VOTEQUORUM_READCONFIG_RUNTIME
#define MESSAGE_REQ_EXEC_VOTEQUORUM_NODEINFO
The req_lib_votequorum_trackstart struct.
const char * get_state_dir(void)
#define VOTEQUORUM_RECONFIG_PARAM_NODE_VOTES
#define VOTEQUORUM_QDEVICE_MAX_NAME_LEN
qb_loop_timer_handle corosync_timer_handle_t
corosync_timer_handle_t
The req_lib_votequorum_qdevice_poll struct.
cs_error_t icmap_get_string(const char *key_name, char **str)
Shortcut for icmap_get for string type.
#define LOGSYS_LEVEL_CRIT
char oldname[VOTEQUORUM_QDEVICE_MAX_NAME_LEN]
#define NODE_FLAGS_LEAVING
#define COROSYNC_LIB_FLOW_CONTROL_REQUIRED
#define LOGSYS_LEVEL_NOTICE
cs_error_t icmap_set_uint8(const char *key_name, uint8_t value)
void(* lib_handler_fn)(void *conn, const void *msg)
The res_lib_votequorum_getinfo struct.
#define VOTEQUORUM_NODESTATE_DEAD
cs_error_t icmap_set_ro_access(const char *key_name, int prefix, int ro_access)
Set read-only access for given key (key_name) or prefix, If prefix is set.
#define VOTEQUORUM_INFO_QDEVICE_CAST_VOTE
int(* ipc_dispatch_send)(void *conn, const void *msg, size_t mlen)
#define VOTEQUORUM_QDEVICE_DEFAULT_TIMEOUT
icmap_iter_t icmap_iter_init(const char *prefix)
Initialize iterator with given prefix.
struct memb_ring_id ring_id
uint64_t tracking_context
#define VOTEQUORUM_RECONFIG_PARAM_EXPECTED_VOTES
#define NODE_FLAGS_QDEVICE_ALIVE
qb_map_iter_t * icmap_iter_t
Itterator type.
Structure passed as new_value and old_value in change callback.
#define NODE_FLAGS_QDEVICE_REGISTERED
cs_error_t icmap_track_add(const char *key_name, int32_t track_type, icmap_notify_fn_t notify_fn, void *user_data, icmap_track_t *icmap_track)
Add tracking function for given key_name.
struct qb_ipc_request_header header __attribute__((aligned(8)))
#define ICMAP_TRACK_PREFIX
Whole prefix is tracked, instead of key only (so "totem." tracking means that "totem.nodeid", "totem.version", ...
unsigned int expected_votes