4 Copyright (C) Andrew Tridgell 2006
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #ifndef _CTDB_PRIVATE_H
21 #define _CTDB_PRIVATE_H
23 #include "ctdb_client.h"
24 #include <sys/socket.h>
27 recovery daemon memdump reply address
29 struct rd_memdump_reply {
35 description for a TAKEOVER_RUN message reply address
37 struct takeover_run_reply {
43 * pid of the ctdbd daemon
45 extern pid_t ctdbd_pid;
48 a tcp connection description
49 also used by tcp_add and tcp_remove controls
51 struct ctdb_tcp_connection {
52 ctdb_sock_addr src_addr;
53 ctdb_sock_addr dst_addr;
56 /* the wire representation for a tcp tickle array */
57 struct ctdb_tcp_wire_array {
59 struct ctdb_tcp_connection connections[1];
62 /* the list of tcp tickles used by get/set tcp tickle list */
63 struct ctdb_control_tcp_tickle_list {
65 struct ctdb_tcp_wire_array tickles;
69 array of tcp connections
71 struct ctdb_tcp_array {
73 struct ctdb_tcp_connection *connections;
77 /* all tunable variables go in here */
79 uint32_t max_redirect_count;
80 uint32_t seqnum_interval; /* unit is ms */
81 uint32_t control_timeout;
82 uint32_t traverse_timeout;
83 uint32_t keepalive_interval;
84 uint32_t keepalive_limit;
86 uint32_t recover_timeout;
87 uint32_t recover_interval;
88 uint32_t election_timeout;
89 uint32_t takeover_timeout;
90 uint32_t monitor_interval;
91 uint32_t tickle_update_interval;
92 uint32_t script_timeout;
93 uint32_t script_timeout_count; /* allow dodgy scripts to hang this many times in a row before we mark the node unhealthy */
94 uint32_t script_unhealthy_on_timeout; /* obsolete */
95 uint32_t recovery_grace_period;
96 uint32_t recovery_ban_period;
97 uint32_t database_hash_size;
98 uint32_t database_max_dead;
99 uint32_t rerecovery_timeout;
100 uint32_t enable_bans;
101 uint32_t deterministic_public_ips;
102 uint32_t reclock_ping_period;
103 uint32_t no_ip_failback;
104 uint32_t verbose_memory_names;
105 uint32_t recd_ping_timeout;
106 uint32_t recd_ping_failcount;
107 uint32_t log_latency_ms;
108 uint32_t reclock_latency_ms;
109 uint32_t recovery_drop_all_ips;
110 uint32_t verify_recovery_lock;
111 uint32_t vacuum_default_interval;
112 uint32_t vacuum_max_run_time;
113 uint32_t repack_limit;
114 uint32_t vacuum_limit;
115 uint32_t vacuum_min_interval;
116 uint32_t vacuum_max_interval;
117 uint32_t max_queue_depth_drop_msg;
118 uint32_t use_status_events_for_monitoring;
119 uint32_t allow_unhealthy_db_read;
120 uint32_t stat_history_interval;
124 an installed ctdb remote call
126 struct ctdb_registered_call {
127 struct ctdb_registered_call *next, *prev;
133 this address structure might need to be generalised later for some
136 struct ctdb_address {
142 check that a pnn is valid
144 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
147 /* called from the queue code when a packet comes in. Called with data==NULL
149 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
152 /* used for callbacks in ctdb_control requests */
153 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
154 int32_t status, TDB_DATA data,
155 const char *errormsg,
158 structure describing a connected client in the daemon
161 struct ctdb_context *ctdb;
163 struct ctdb_queue *queue;
166 struct ctdb_tcp_list *tcp_list;
168 uint32_t num_persistent_updates;
169 struct ctdb_client_notify_list *notify;
174 /* state associated with a public ip address */
176 struct ctdb_vnn *prev, *next;
178 struct ctdb_iface *iface;
180 ctdb_sock_addr public_address;
181 uint8_t public_netmask_bits;
183 /* the node number that is serving this public address, if any.
184 If no node serves this ip it is set to -1 */
187 /* List of clients to tickle for this public address */
188 struct ctdb_tcp_array *tcp_array;
190 /* whether we need to update the other nodes with changes to our list
191 of connected clients */
192 bool tcp_update_needed;
194 /* a context to hang sending gratious arp events off */
195 TALLOC_CTX *takeover_ctx;
197 struct ctdb_kill_tcp *killtcp;
201 state associated with one node
204 struct ctdb_context *ctdb;
205 struct ctdb_address address;
206 const char *name; /* for debug messages */
207 void *private_data; /* private to transport */
211 /* used by the dead node monitoring */
216 /* used to track node capabilities, is only valid/tracked inside the
219 uint32_t capabilities;
221 /* a list of controls pending to this node, so we can time them out quickly
222 if the node becomes disconnected */
223 struct daemon_control_state *pending_controls;
225 /* used by the recovery daemon when distributing ip addresses
226 across the nodes. it needs to know which public ip's can be handled
229 struct ctdb_all_public_ips *known_public_ips;
230 struct ctdb_all_public_ips *available_public_ips;
231 /* used by the recovery dameon to track when a node should be banned */
232 struct ctdb_banning_state *ban_state;
236 transport specific methods
238 struct ctdb_methods {
239 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
240 int (*start)(struct ctdb_context *); /* start the transport */
241 int (*add_node)(struct ctdb_node *); /* setup a new node */
242 int (*connect_node)(struct ctdb_node *); /* connect to node */
243 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
244 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
245 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
246 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
250 transport calls up to the ctdb layer
252 struct ctdb_upcalls {
253 /* recv_pkt is called when a packet comes in */
254 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
256 /* node_dead is called when an attempt to send to a node fails */
257 void (*node_dead)(struct ctdb_node *);
259 /* node_connected is called when a connection to a node is established */
260 void (*node_connected)(struct ctdb_node *);
263 /* list of message handlers - needs to be changed to a more efficient data
264 structure so we can find a message handler given a srvid quickly */
265 struct ctdb_message_list {
266 struct ctdb_context *ctdb;
267 struct ctdb_message_list *next, *prev;
269 ctdb_msg_fn_t message_handler;
270 void *message_private;
273 /* additional data required for the daemon mode */
274 struct ctdb_daemon_data {
277 struct ctdb_queue *queue;
281 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
283 if (value > ctdb->statistics.counter) { \
284 ctdb->statistics.counter = c->hopcount; \
286 if (value > ctdb->statistics_current.counter) { \
287 ctdb->statistics_current.counter = c->hopcount; \
291 #define CTDB_INCREMENT_STAT(ctdb, counter) \
293 ctdb->statistics.counter++; \
294 ctdb->statistics_current.counter++; \
297 #define CTDB_DECREMENT_STAT(ctdb, counter) \
299 if (ctdb->statistics.counter > 0) \
300 ctdb->statistics.counter--; \
301 if (ctdb->statistics_current.counter > 0) \
302 ctdb->statistics_current.counter--; \
305 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
307 if (value > ctdb->statistics.counter) \
308 ctdb->statistics.counter = value; \
309 if (value > ctdb->statistics_current.counter) \
310 ctdb->statistics_current.counter = value; \
312 if (ctdb->tunable.reclock_latency_ms != 0) { \
313 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
314 DEBUG(DEBUG_ERR, ("High RECLOCK latency %fs for operation %s\n", value, name)); \
320 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
322 double l = timeval_elapsed(&t); \
323 if (l > ctdb->statistics.counter) \
324 ctdb->statistics.counter = l; \
325 if (l > ctdb->statistics_current.counter) \
326 ctdb->statistics_current.counter = l; \
328 if (ctdb->tunable.log_latency_ms !=0) { \
329 if (l*1000 > ctdb->tunable.log_latency_ms) { \
330 DEBUG(DEBUG_WARNING, ("High latency %.6fs for operation %s on database %s\n", l, operation, db->db_name));\
339 #define INVALID_GENERATION 1
340 /* table that contains the mapping between a hash value and lmaster
342 struct ctdb_vnn_map {
349 a wire representation of the vnn map
351 struct ctdb_vnn_map_wire {
357 /* a structure that contains the elements required for the write record
360 struct ctdb_write_record {
364 unsigned char blob[1];
367 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
369 #define CTDB_MONITORING_ACTIVE 0
370 #define CTDB_MONITORING_DISABLED 1
372 /* The different capabilities of the ctdb daemon. */
373 #define CTDB_CAP_RECMASTER 0x00000001
374 #define CTDB_CAP_LMASTER 0x00000002
375 /* This capability is set if CTDB_LVS_PUBLIC_IP is set */
376 #define CTDB_CAP_LVS 0x00000004
377 /* This capability is set if NATGW is enabled */
378 #define CTDB_CAP_NATGW 0x00000008
380 #define NUM_DB_PRIORITIES 3
381 /* main state of the ctdb daemon */
382 struct ctdb_context {
383 struct tevent_context *ev;
384 struct timeval ctdbd_start_time;
385 struct timeval last_recovery_started;
386 struct timeval last_recovery_finished;
387 uint32_t recovery_mode;
388 TALLOC_CTX *tickle_update_context;
389 TALLOC_CTX *keepalive_ctx;
390 struct ctdb_tunable tunable;
391 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
392 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
393 bool freeze_transaction_started;
394 uint32_t freeze_transaction_id;
395 struct ctdb_address address;
397 const char *db_directory;
398 const char *db_directory_persistent;
399 const char *db_directory_state;
400 struct tdb_wrap *db_persistent_health;
401 uint32_t db_persistent_startup_generation;
402 uint64_t db_persistent_check_errors;
403 uint64_t max_persistent_check_errors;
404 const char *transport;
405 char *recovery_lock_file;
406 int recovery_lock_fd;
407 uint32_t pnn; /* our own pnn */
409 uint32_t num_connected;
411 uint32_t capabilities;
412 struct idr_context *idr;
414 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
415 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
416 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
417 struct ctdb_iface *ifaces; /* list of local interfaces */
419 const struct ctdb_methods *methods; /* transport methods */
420 const struct ctdb_upcalls *upcalls; /* transport upcalls */
421 void *private_data; /* private to transport */
422 struct ctdb_db_context *db_list;
423 struct ctdb_message_list *message_list;
424 struct ctdb_daemon_data daemon;
425 struct ctdb_statistics statistics;
426 struct ctdb_statistics statistics_current;
427 #define MAX_STAT_HISTORY 100
428 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
429 struct ctdb_vnn_map *vnn_map;
430 uint32_t num_clients;
431 uint32_t recovery_master;
432 struct ctdb_call_state *pending_calls;
433 struct ctdb_client_ip *client_ip_list;
434 bool do_checkpublicip;
435 struct trbt_tree *server_ids;
436 const char *event_script_dir;
437 const char *notification_script;
438 const char *default_public_interface;
444 struct ctdb_monitor_state *monitor;
445 struct ctdb_log_state *log;
446 int start_as_disabled;
447 int start_as_stopped;
449 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
450 uint32_t *recd_ping_count;
451 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
453 TALLOC_CTX *event_script_ctx;
455 struct ctdb_event_script_state *current_monitor;
456 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
458 TALLOC_CTX *banning_ctx;
460 struct ctdb_vacuum_child_context *vacuumers;
462 /* mapping from pid to ctdb_client * */
463 struct ctdb_client_pid_list *client_pids;
465 /* used in the recovery daemon to remember the ip allocation */
466 struct trbt_tree *ip_tree;
469 struct ctdb_db_context {
470 struct ctdb_db_context *next, *prev;
471 struct ctdb_context *ctdb;
477 struct tdb_wrap *ltdb;
478 struct ctdb_registered_call *calls; /* list of registered calls */
480 struct timed_event *seqnum_update;
481 struct ctdb_traverse_local_handle *traverse;
482 bool transaction_active;
483 struct ctdb_vacuum_handle *vacuum_handle;
484 char *unhealthy_reason;
488 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
489 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
490 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
491 return -1; }} while (0)
493 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
494 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
495 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
498 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
499 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
500 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
501 return NULL; }} while (0)
503 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
504 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
505 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
509 structure passed in set_call control
511 struct ctdb_control_set_call {
518 struct for kill_tcp control
520 struct ctdb_control_killtcp {
521 ctdb_sock_addr src_addr;
522 ctdb_sock_addr dst_addr;
526 struct holding a ctdb_sock_addr and an interface name,
527 used to add/remove public addresses
529 struct ctdb_control_ip_iface {
537 struct holding a ctdb_sock_addr and an interface name,
538 used for send_gratious_arp
540 struct ctdb_control_gratious_arp {
548 persistent store control - update this record on all other nodes
550 struct ctdb_control_persistent_store {
557 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
559 struct ctdb_node_flag_change {
566 struct for admin setting a ban
568 struct ctdb_ban_info {
573 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
575 #define CTDB_LMASTER_ANY 0xffffffff
578 state of a in-progress ctdb call
580 struct ctdb_call_state {
581 struct ctdb_call_state *next, *prev;
582 enum call_state state;
584 struct ctdb_req_call *c;
585 struct ctdb_db_context *ctdb_db;
587 struct ctdb_call *call;
590 void (*fn)(struct ctdb_call_state *);
596 /* used for fetch_lock */
597 struct ctdb_fetch_handle {
598 struct ctdb_db_context *ctdb_db;
601 struct ctdb_ltdb_header header;
604 /* internal prototypes */
605 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
606 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
607 bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
608 int ctdb_parse_address(struct ctdb_context *ctdb,
609 TALLOC_CTX *mem_ctx, const char *str,
610 struct ctdb_address *address);
611 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
612 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
613 uint32_t ctdb_hash(const TDB_DATA *key);
614 uint32_t ctdb_hash_string(const char *str);
615 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
616 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
617 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
618 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
619 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
620 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
622 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
623 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
624 TDB_DATA key, struct ctdb_ltdb_header *header,
625 TALLOC_CTX *mem_ctx, TDB_DATA *data);
626 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
627 struct ctdb_ltdb_header *header, TDB_DATA data);
628 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
629 struct ctdb_req_control *c,
631 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
632 struct ctdb_req_control *c,
634 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
635 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
636 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
637 TDB_DATA key, struct ctdb_req_header *hdr,
638 void (*recv_pkt)(void *, struct ctdb_req_header *),
639 void *recv_context, bool ignore_generation);
640 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
641 TDB_DATA key, struct ctdb_ltdb_header *header,
642 struct ctdb_req_header *hdr, TDB_DATA *data,
643 void (*recv_pkt)(void *, struct ctdb_req_header *),
644 void *recv_context, bool ignore_generation);
645 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
647 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
648 struct ctdb_call *call,
649 struct ctdb_ltdb_header *header,
653 int ctdbd_start(struct ctdb_context *ctdb);
654 struct ctdb_call_state *ctdbd_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
655 int ctdbd_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
658 queue a packet for sending
660 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
663 setup the fd used by the queue
665 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
668 setup a packet queue on a socket
670 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
671 TALLOC_CTX *mem_ctx, int fd, int alignment,
673 ctdb_queue_cb_fn_t callback,
674 void *private_data, const char *fmt, ...)
675 PRINTF_ATTRIBUTE(7,8);
678 allocate a packet for use in client<->daemon communication
680 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
682 enum ctdb_operation operation,
683 size_t length, size_t slength,
685 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
686 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
688 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
690 enum ctdb_operation operation,
691 size_t length, size_t slength,
693 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
694 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
696 int ctdb_queue_length(struct ctdb_queue *queue);
699 lock a record in the ltdb, given a key
701 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
704 unlock a record in the ltdb, given a key
706 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
710 make a ctdb call to the local daemon - async send. Called from client context.
712 This constructs a ctdb_call request and queues it for processing.
713 This call never blocks.
715 struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
716 struct ctdb_call *call);
719 make a recv call to the local ctdb daemon - called from client context
721 This is called when the program wants to wait for a ctdb_call to complete and get the
722 results. This call will block unless the call has already completed.
724 int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
726 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
727 uint64_t srvid, TDB_DATA data);
732 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
733 uint64_t srvid, TDB_DATA data);
736 struct lockwait_handle *ctdb_lockwait(struct ctdb_db_context *ctdb_db,
738 void (*callback)(void *), void *private_data);
740 struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
741 struct ctdb_call *call);
743 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
745 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
746 struct ctdb_call *call,
747 struct ctdb_ltdb_header *header);
749 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
750 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx, TDB_DATA *data,
753 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
755 void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
757 int ctdb_socket_connect(struct ctdb_context *ctdb);
759 #define CTDB_BAD_REQID ((uint32_t)-1)
760 uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
761 void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
762 void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
764 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
765 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
767 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
768 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
770 ctdb_control_callback_fn_t callback,
773 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
774 TDB_DATA *outdata, uint64_t tdb_flags, bool persistent);
776 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
777 ctdb_fn_t fn, int id);
779 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
780 uint32_t opcode, uint32_t flags, TDB_DATA data,
781 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
782 struct timeval *timeout, char **errormsg);
783 int ctdb_control_recv(struct ctdb_context *ctdb,
784 struct ctdb_client_control_state *state,
786 TDB_DATA *outdata, int32_t *status, char **errormsg);
788 struct ctdb_client_control_state *
789 ctdb_control_send(struct ctdb_context *ctdb,
790 uint32_t destnode, uint64_t srvid,
791 uint32_t opcode, uint32_t flags, TDB_DATA data,
793 struct timeval *timeout,
799 #define CHECK_CONTROL_DATA_SIZE(size) do { \
800 if (indata.dsize != size) { \
801 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
802 opcode, (unsigned)indata.dsize, (unsigned)size)); \
807 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
808 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
809 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
810 int ctdb_control_getnodemapv4(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
811 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
812 int ctdb_control_writerecord(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
815 struct ctdb_traverse_start {
822 structure used to pass record data between the child and parent
824 struct ctdb_rec_data {
833 /* structure used for pulldb control */
834 struct ctdb_control_pulldb {
839 /* structure used for sending lists of records */
840 struct ctdb_marshall_buffer {
846 /* set dmaster control structure */
847 struct ctdb_control_set_dmaster {
853 structure for setting a tunable
855 struct ctdb_control_set_tunable {
862 structure for getting a tunable
864 struct ctdb_control_get_tunable {
870 structure for listing tunables
872 struct ctdb_control_list_tunable {
874 /* returns a : separated list of tunable names */
879 struct ctdb_node_and_flagsv4 {
882 struct sockaddr_in sin;
885 struct ctdb_node_mapv4 {
887 struct ctdb_node_and_flagsv4 nodes[1];
890 struct ctdb_control_wipe_database {
892 uint32_t transaction_id;
896 state of a in-progress ctdb call in client
898 struct ctdb_client_call_state {
899 enum call_state state;
901 struct ctdb_db_context *ctdb_db;
902 struct ctdb_call *call;
904 void (*fn)(struct ctdb_client_call_state *);
910 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
911 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
912 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
913 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
914 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
915 TDB_DATA *outdata, uint32_t srcnode);
917 int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
919 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
920 int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
921 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
923 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
924 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
926 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
927 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
929 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
931 struct ctdb_ltdb_header *header,
932 TDB_DATA *key, TDB_DATA *data);
934 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
935 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
936 int32_t ctdb_control_set_dmaster(struct ctdb_context *ctdb, TDB_DATA indata);
938 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
939 struct ctdb_req_control *c,
940 TDB_DATA indata, bool *async_reply,
941 const char **errormsg);
942 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
943 TDB_DATA *outdata, int32_t status, const char *errormsg);
945 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
946 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority);
948 int ctdb_start_recoverd(struct ctdb_context *ctdb);
949 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
951 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
953 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
954 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
955 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
956 void ctdb_start_monitoring(struct ctdb_context *ctdb);
957 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
958 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
959 void ctdb_start_keepalive(struct ctdb_context *ctdb);
960 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
961 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
964 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
965 void ctdb_call_resend_all(struct ctdb_context *ctdb);
966 void ctdb_node_dead(struct ctdb_node *node);
967 void ctdb_node_connected(struct ctdb_node *node);
968 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
969 void ctdb_high_priority(struct ctdb_context *ctdb);
970 void ctdb_reduce_priority(struct ctdb_context *ctdb);
971 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
972 struct ctdb_req_control *c,
975 int32_t ctdb_control_takeover_ipv4(struct ctdb_context *ctdb,
976 struct ctdb_req_control *c,
979 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
980 struct ctdb_req_control *c,
983 int32_t ctdb_control_release_ipv4(struct ctdb_context *ctdb,
984 struct ctdb_req_control *c,
987 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
988 struct ctdb_req_control *c,
990 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
991 struct ctdb_req_control *c,
994 struct ctdb_public_ipv4 {
996 struct sockaddr_in sin;
999 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1000 uint32_t destnode, struct ctdb_public_ip *ip);
1001 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1002 uint32_t destnode, struct ctdb_public_ip *ip);
1004 struct ctdb_all_public_ipsv4 {
1006 struct ctdb_public_ipv4 ips[1];
1009 int32_t ctdb_control_get_public_ipsv4(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1010 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1011 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1012 struct timeval timeout,
1014 TALLOC_CTX *mem_ctx,
1015 struct ctdb_all_public_ips **ips);
1016 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1017 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1018 struct timeval timeout, uint32_t destnode,
1019 TALLOC_CTX *mem_ctx,
1021 struct ctdb_all_public_ips **ips);
1022 int ctdb_ctrl_get_public_ipsv4(struct ctdb_context *ctdb,
1023 struct timeval timeout, uint32_t destnode,
1024 TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
1027 #define CTDB_IFACE_SIZE IFNAMSIZ
1029 #define CTDB_IFACE_SIZE 16
1032 struct ctdb_control_iface_info {
1033 char name[CTDB_IFACE_SIZE+2];
1034 uint16_t link_state;
1035 uint32_t references;
1038 struct ctdb_control_public_ip_info {
1039 struct ctdb_public_ip ip;
1040 uint32_t active_idx;
1042 struct ctdb_control_iface_info ifaces[1];
1045 struct ctdb_control_get_ifaces {
1047 struct ctdb_control_iface_info ifaces[1];
1050 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1051 struct ctdb_req_control *c,
1054 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1055 struct ctdb_req_control *c,
1057 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1058 struct ctdb_req_control *c,
1060 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1061 struct timeval timeout, uint32_t destnode,
1062 TALLOC_CTX *mem_ctx,
1063 const ctdb_sock_addr *addr,
1064 struct ctdb_control_public_ip_info **info);
1065 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1066 struct timeval timeout, uint32_t destnode,
1067 TALLOC_CTX *mem_ctx,
1068 struct ctdb_control_get_ifaces **ifaces);
1069 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1070 struct timeval timeout, uint32_t destnode,
1071 TALLOC_CTX *mem_ctx,
1072 const struct ctdb_control_iface_info *info);
1074 /* from takeover/system.c */
1075 uint32_t uint16_checksum(uint16_t *data, size_t n);
1076 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1077 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1078 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1079 const ctdb_sock_addr *src,
1080 uint32_t seq, uint32_t ack, int rst);
1082 int ctdb_set_public_addresses(struct ctdb_context *ctdb, const char *alist);
1083 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1086 int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
1087 int ctdb_set_event_script_dir(struct ctdb_context *ctdb, const char *script_dir);
1088 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1089 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap);
1091 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1093 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1094 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1095 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1096 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1097 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1098 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1099 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1101 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1102 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1103 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1104 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1105 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1106 TALLOC_CTX *mem_ctx,
1107 void (*callback)(struct ctdb_context *, int, void *),
1110 enum ctdb_eventscript_call call,
1111 const char *fmt, ...) PRINTF_ATTRIBUTE(7,8);
1112 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1114 void set_nonblocking(int fd);
1115 void set_close_on_exec(int fd);
1117 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep);
1119 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1121 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1123 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1124 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1125 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1126 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1127 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1129 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1131 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1133 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1134 struct timeval timeout,
1136 struct ctdb_tunable *tunables);
1138 int ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1140 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1141 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1142 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1143 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1146 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1147 int ctdb_sys_close_capture_socket(void *private_data);
1148 int ctdb_sys_read_tcp_packet(int s, void *private_data, ctdb_sock_addr *src, ctdb_sock_addr *dst, uint32_t *ack_seq, uint32_t *seq);
1150 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1151 struct timeval timeout,
1153 struct ctdb_control_killtcp *killtcp);
1155 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1156 struct timeval timeout,
1158 struct ctdb_control_ip_iface *pub);
1160 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1161 struct timeval timeout,
1163 struct ctdb_control_ip_iface *pub);
1165 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1166 struct timeval timeout,
1168 ctdb_sock_addr *addr,
1169 const char *ifname);
1171 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1172 struct timeval timeout,
1174 TALLOC_CTX *mem_ctx,
1175 ctdb_sock_addr *addr,
1176 struct ctdb_control_tcp_tickle_list **list);
1179 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1182 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1184 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1186 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1188 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1191 int ctdb_attach_databases(struct ctdb_context *ctdb);
1193 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1194 struct ctdb_req_control *c,
1195 TDB_DATA recdata, bool *async_reply);
1196 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1197 struct ctdb_req_control *c, TDB_DATA recdata,
1199 int32_t ctdb_control_trans2_commit(struct ctdb_context *ctdb,
1200 struct ctdb_req_control *c,
1201 TDB_DATA recdata, bool *async_reply);
1203 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1204 struct ctdb_req_control *c,
1205 TDB_DATA recdata, bool *async_reply);
1207 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1208 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1209 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1210 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1211 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1212 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1217 int ctdb_vacuum(struct ctdb_context *ctdb, int argc, const char **argv);
1218 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1220 void ctdb_block_signal(int signum);
1221 void ctdb_unblock_signal(int signum);
1222 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1223 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1224 void ctdb_lockdown_memory(struct ctdb_context *ctdb);
1226 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1228 struct client_async_data {
1229 enum ctdb_controls opcode;
1230 bool dont_log_errors;
1232 uint32_t fail_count;
1233 client_async_callback callback;
1234 client_async_callback fail_callback;
1235 void *callback_data;
1237 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1238 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1239 int ctdb_client_async_control(struct ctdb_context *ctdb,
1240 enum ctdb_controls opcode,
1243 struct timeval timeout,
1244 bool dont_log_errors,
1246 client_async_callback client_callback,
1247 client_async_callback fail_callback,
1248 void *callback_data);
1250 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1252 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1254 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1255 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1257 int32_t ctdb_control_trans2_finished(struct ctdb_context *ctdb,
1258 struct ctdb_req_control *c);
1259 int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
1260 struct ctdb_req_control *c);
1261 int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
1262 struct ctdb_req_control *c,
1265 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1266 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1267 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1269 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1270 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1272 extern int script_log_level;
1273 extern bool fast_start;
1275 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1279 int ctdb_log_event_script_output(struct ctdb_context *ctdb, char *str, uint16_t len);
1280 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1282 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1283 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1285 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1286 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1288 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1289 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1291 int32_t ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1292 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1293 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1294 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata);
1295 void ctdb_ban_self(struct ctdb_context *ctdb);
1297 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1299 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1301 int start_syslog_daemon(struct ctdb_context *ctdb);
1303 /* Where to send the log messages back to */
1304 struct ctdb_get_log_addr {
1310 extern int log_ringbuf_size;
1312 int32_t ctdb_control_get_log(struct ctdb_context *ctdb, TDB_DATA addr);
1313 int32_t ctdb_control_clear_log(struct ctdb_context *ctdb);
1316 struct ctdb_log_state *ctdb_fork_with_logging(TALLOC_CTX *mem_ctx,
1317 struct ctdb_context *ctdb,
1318 void (*logfn)(const char *, uint16_t, void *),
1319 void *logfn_private, pid_t *pid);
1321 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1322 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1324 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1328 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1329 struct ctdb_db_context *ctdb_db);
1330 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1331 struct ctdb_db_context *ctdb_db,
1332 const char *reason,/* NULL means healthy */
1333 int num_healthy_nodes);
1334 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1336 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1338 void ctdb_fault_setup(void);
1340 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1341 struct ctdb_all_public_ips *ips);
1342 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1343 struct ctdb_public_ip *ip);
1345 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1347 int ctdb_statistics_init(struct ctdb_context *ctdb);
1349 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1350 struct ctdb_req_control *c,