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/>.
23 #define CTDB_IMMEDIATE_MIGRATION 0x00000001
34 structure passed to a ctdb call backend function
36 struct ctdb_call_info {
37 TDB_DATA key; /* record key */
38 TDB_DATA record_data; /* current data in the record */
39 TDB_DATA *new_data; /* optionally updated record data */
40 TDB_DATA *call_data; /* optionally passed from caller */
41 TDB_DATA *reply_data; /* optionally returned by function */
42 uint32_t status; /* optional reply status - defaults to zero */
45 #define CTDB_ERR_INVALID 1
46 #define CTDB_ERR_NOMEM 2
51 #define CTDB_FLAG_TORTURE (1<<1)
54 a message handler ID meaning "give me all messages"
56 #define CTDB_SRVID_ALL (~(uint64_t)0)
61 #define CTDB_SRVID_RECOVERY 0xF100000000000000LL
64 a message handler ID meaning that the cluster has been reconfigured
66 #define CTDB_SRVID_RECONFIGURE 0xF200000000000000LL
69 a message handler ID meaning that an IP address has been released
71 #define CTDB_SRVID_RELEASE_IP 0xF300000000000000LL
74 a message ID meaning that a nodes flags have changed
76 #define CTDB_SRVID_NODE_FLAGS_CHANGED 0xF400000000000000LL
79 a message ID meaning that a node should be banned
81 #define CTDB_SRVID_BAN_NODE 0xF500000000000000LL
84 a message ID meaning that a node should be unbanned
86 #define CTDB_SRVID_UNBAN_NODE 0xF600000000000000LL
89 a message to tell the recovery daemon to fetch a set of records
91 #define CTDB_SRVID_VACUUM_FETCH 0xF700000000000000LL
94 /* used on the domain socket, send a pdu to the local daemon */
95 #define CTDB_CURRENT_NODE 0xF0000001
96 /* send a broadcast to all nodes in the cluster, active or not */
97 #define CTDB_BROADCAST_ALL 0xF0000002
98 /* send a broadcast to all nodes in the current vnn map */
99 #define CTDB_BROADCAST_VNNMAP 0xF0000003
100 /* send a broadcast to all connected nodes */
101 #define CTDB_BROADCAST_CONNECTED 0xF0000004
104 enum control_state {CTDB_CONTROL_WAIT, CTDB_CONTROL_DONE, CTDB_CONTROL_ERROR, CTDB_CONTROL_TIMEOUT};
106 struct ctdb_client_control_state {
107 struct ctdb_context *ctdb;
111 enum control_state state;
113 struct ctdb_req_control *c;
115 /* if we have a callback registered for the completion (or failure) of
117 if a callback is used, it MUST talloc_free the cb_data passed to it
120 void (*fn)(struct ctdb_client_control_state *);
126 struct event_context;
129 initialise ctdb subsystem
131 struct ctdb_context *ctdb_init(struct event_context *ev);
136 int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport);
139 set the directory for the local databases
141 int ctdb_set_tdb_dir(struct ctdb_context *ctdb, const char *dir);
142 int ctdb_set_tdb_dir_persistent(struct ctdb_context *ctdb, const char *dir);
147 void ctdb_set_flags(struct ctdb_context *ctdb, unsigned flags);
150 set max acess count before a dmaster migration
152 void ctdb_set_max_lacount(struct ctdb_context *ctdb, unsigned count);
155 tell ctdb what address to listen on, in transport specific format
157 int ctdb_set_address(struct ctdb_context *ctdb, const char *address);
159 int ctdb_set_socketname(struct ctdb_context *ctdb, const char *socketname);
162 tell ctdb what nodes are available. This takes a filename, which will contain
163 1 node address per line, in a transport specific format
165 int ctdb_set_nlist(struct ctdb_context *ctdb, const char *nlist);
168 Check that a specific ip address exists in the node list and returns
169 the id for the node or -1
171 int ctdb_ip_to_nodeid(struct ctdb_context *ctdb, const char *nodeip);
174 start the ctdb protocol
176 int ctdb_start(struct ctdb_context *ctdb);
177 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork);
180 attach to a ctdb database
182 struct ctdb_db_context *ctdb_attach(struct ctdb_context *ctdb, const char *name, bool persistent);
185 find an attached ctdb_db handle given a name
187 struct ctdb_db_context *ctdb_db_handle(struct ctdb_context *ctdb, const char *name);
190 error string for last ctdb error
192 const char *ctdb_errstr(struct ctdb_context *);
194 /* a ctdb call function */
195 typedef int (*ctdb_fn_t)(struct ctdb_call_info *);
198 setup a ctdb call function
200 int ctdb_set_call(struct ctdb_db_context *ctdb_db, ctdb_fn_t fn, uint32_t id);
205 make a ctdb call. The associated ctdb call function will be called on the DMASTER
208 int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
211 initiate an ordered ctdb cluster shutdown
212 this function will never return
214 void ctdb_shutdown(struct ctdb_context *ctdb);
216 /* return pnn of this node */
217 uint32_t ctdb_get_pnn(struct ctdb_context *ctdb);
220 return the number of nodes
222 uint32_t ctdb_get_num_nodes(struct ctdb_context *ctdb);
224 /* setup a handler for ctdb messages */
225 typedef void (*ctdb_message_fn_t)(struct ctdb_context *, uint64_t srvid,
226 TDB_DATA data, void *);
227 int ctdb_set_message_handler(struct ctdb_context *ctdb, uint64_t srvid,
228 ctdb_message_fn_t handler,
232 int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
233 struct ctdb_client_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
234 int ctdb_call_recv(struct ctdb_client_call_state *state, struct ctdb_call *call);
236 /* send a ctdb message */
237 int ctdb_send_message(struct ctdb_context *ctdb, uint32_t pnn,
238 uint64_t srvid, TDB_DATA data);
242 Fetch a ctdb record from a remote node
243 . Underneath this will force the
244 dmaster for the record to be moved to the local node.
246 struct ctdb_record_handle *ctdb_fetch_lock(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx,
247 TDB_DATA key, TDB_DATA *data);
249 int ctdb_record_store(struct ctdb_record_handle *h, TDB_DATA data);
251 int ctdb_fetch(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx,
252 TDB_DATA key, TDB_DATA *data);
254 int ctdb_register_message_handler(struct ctdb_context *ctdb,
257 ctdb_message_fn_t handler,
260 struct ctdb_db_context *find_ctdb_db(struct ctdb_context *ctdb, uint32_t id);
263 struct ctdb_context *ctdb_cmdline_client(struct event_context *ev);
265 struct ctdb_statistics;
266 int ctdb_ctrl_statistics(struct ctdb_context *ctdb, uint32_t destnode, struct ctdb_statistics *status);
268 int ctdb_ctrl_shutdown(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
271 int ctdb_ctrl_getvnnmap(struct ctdb_context *ctdb,
272 struct timeval timeout, uint32_t destnode,
273 TALLOC_CTX *mem_ctx, struct ctdb_vnn_map **vnnmap);
274 int ctdb_ctrl_setvnnmap(struct ctdb_context *ctdb,
275 struct timeval timeout, uint32_t destnode,
276 TALLOC_CTX *mem_ctx, struct ctdb_vnn_map *vnnmap);
278 /* table that contains a list of all dbids on a node
280 struct ctdb_dbid_map {
287 int ctdb_ctrl_getdbmap(struct ctdb_context *ctdb,
288 struct timeval timeout, uint32_t destnode,
289 TALLOC_CTX *mem_ctx, struct ctdb_dbid_map **dbmap);
292 struct ctdb_node_map;
294 int ctdb_ctrl_getnodemap(struct ctdb_context *ctdb,
295 struct timeval timeout, uint32_t destnode,
296 TALLOC_CTX *mem_ctx, struct ctdb_node_map **nodemap);
298 struct ctdb_key_list {
302 struct ctdb_ltdb_header *headers;
306 int ctdb_ctrl_pulldb(
307 struct ctdb_context *ctdb, uint32_t destnode, uint32_t dbid,
308 uint32_t lmaster, TALLOC_CTX *mem_ctx,
309 struct timeval timeout, TDB_DATA *outdata);
311 struct ctdb_client_control_state *ctdb_ctrl_pulldb_send(
312 struct ctdb_context *ctdb, uint32_t destnode, uint32_t dbid,
313 uint32_t lmaster, TALLOC_CTX *mem_ctx, struct timeval timeout);
315 int ctdb_ctrl_pulldb_recv(
316 struct ctdb_context *ctdb,
317 TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state,
320 int ctdb_ctrl_pushdb(
321 struct ctdb_context *ctdb, uint32_t destnode, uint32_t dbid,
323 struct timeval timeout, TDB_DATA indata);
325 struct ctdb_client_control_state *ctdb_ctrl_pushdb_send(
326 struct ctdb_context *ctdb, uint32_t destnode, uint32_t dbid,
327 TALLOC_CTX *mem_ctx, struct timeval timeout,
330 int ctdb_ctrl_pushdb_recv(
331 struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx,
332 struct ctdb_client_control_state *state);
335 int ctdb_ctrl_copydb(struct ctdb_context *ctdb,
336 struct timeval timeout, uint32_t sourcenode,
337 uint32_t destnode, uint32_t dbid, uint32_t lmaster,
338 TALLOC_CTX *mem_ctx);
340 int ctdb_ctrl_getdbpath(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t dbid, TALLOC_CTX *mem_ctx, const char **path);
341 int ctdb_ctrl_getdbname(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t dbid, TALLOC_CTX *mem_ctx, const char **name);
342 int ctdb_ctrl_createdb(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, TALLOC_CTX *mem_ctx, const char *name, bool persistent);
344 int ctdb_ctrl_process_exists(struct ctdb_context *ctdb, uint32_t destnode, pid_t pid);
346 int ctdb_ctrl_ping(struct ctdb_context *ctdb, uint32_t destnode);
348 int ctdb_ctrl_get_config(struct ctdb_context *ctdb);
350 int ctdb_ctrl_get_debuglevel(struct ctdb_context *ctdb, uint32_t destnode, uint32_t *level);
351 int ctdb_ctrl_set_debuglevel(struct ctdb_context *ctdb, uint32_t destnode, uint32_t level);
354 change dmaster for all keys in the database to the new value
356 int ctdb_ctrl_setdmaster(struct ctdb_context *ctdb,
357 struct timeval timeout, uint32_t destnode,
358 TALLOC_CTX *mem_ctx, uint32_t dbid, uint32_t dmaster);
361 write a record on a specific db (this implicitely updates dmaster of the record to locally be the vnn of the node where the control is executed on)
363 int ctdb_ctrl_write_record(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid, TDB_DATA key, TDB_DATA data);
365 #define CTDB_RECOVERY_NORMAL 0
366 #define CTDB_RECOVERY_ACTIVE 1
369 get the recovery mode of a remote node
371 int ctdb_ctrl_getrecmode(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, uint32_t *recmode);
373 struct ctdb_client_control_state *ctdb_ctrl_getrecmode_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode);
375 int ctdb_ctrl_getrecmode_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state, uint32_t *recmode);
379 set the recovery mode of a remote node
381 int ctdb_ctrl_setrecmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t recmode);
383 get the monitoring mode of a remote node
385 int ctdb_ctrl_getmonmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *monmode);
388 get the recovery master of a remote node
390 int ctdb_ctrl_getrecmaster(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, uint32_t *recmaster);
392 struct ctdb_client_control_state *ctdb_ctrl_getrecmaster_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode);
394 int ctdb_ctrl_getrecmaster_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state, uint32_t *recmaster);
399 set the recovery master of a remote node
401 int ctdb_ctrl_setrecmaster(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t recmaster);
403 uint32_t *ctdb_get_connected_nodes(struct ctdb_context *ctdb,
404 struct timeval timeout,
406 uint32_t *num_nodes);
408 int ctdb_statistics_reset(struct ctdb_context *ctdb, uint32_t destnode);
410 int ctdb_set_logfile(struct ctdb_context *ctdb, const char *logfile, bool use_syslog);
412 typedef int (*ctdb_traverse_func)(struct ctdb_context *, TDB_DATA, TDB_DATA, void *);
413 int ctdb_traverse(struct ctdb_db_context *ctdb_db, ctdb_traverse_func fn, void *private_data);
415 int ctdb_dump_db(struct ctdb_db_context *ctdb_db, FILE *f);
418 get the pid of a ctdb daemon
420 int ctdb_ctrl_getpid(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *pid);
422 int ctdb_ctrl_freeze(struct ctdb_context *ctdb, struct timeval timeout,
425 struct ctdb_client_control_state *
426 ctdb_ctrl_freeze_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx,
427 struct timeval timeout, uint32_t destnode);
429 int ctdb_ctrl_freeze_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx,
430 struct ctdb_client_control_state *state);
432 int ctdb_ctrl_thaw(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
434 int ctdb_ctrl_getpnn(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
436 int ctdb_ctrl_get_tunable(struct ctdb_context *ctdb,
437 struct timeval timeout,
439 const char *name, uint32_t *value);
441 int ctdb_ctrl_set_tunable(struct ctdb_context *ctdb,
442 struct timeval timeout,
444 const char *name, uint32_t value);
446 int ctdb_ctrl_list_tunables(struct ctdb_context *ctdb,
447 struct timeval timeout,
450 const char ***list, uint32_t *count);
452 int ctdb_ctrl_modflags(struct ctdb_context *ctdb,
453 struct timeval timeout,
455 uint32_t set, uint32_t clear);
457 enum ctdb_server_id_type { SERVER_TYPE_SAMBA=1 };
459 struct ctdb_server_id {
460 enum ctdb_server_id_type type;
465 struct ctdb_server_id_list {
467 struct ctdb_server_id server_ids[1];
471 int ctdb_ctrl_register_server_id(struct ctdb_context *ctdb,
472 struct timeval timeout,
473 struct ctdb_server_id *id);
474 int ctdb_ctrl_unregister_server_id(struct ctdb_context *ctdb,
475 struct timeval timeout,
476 struct ctdb_server_id *id);
477 int ctdb_ctrl_check_server_id(struct ctdb_context *ctdb,
478 struct timeval timeout, uint32_t destnode,
479 struct ctdb_server_id *id, uint32_t *status);
480 int ctdb_ctrl_get_server_id_list(struct ctdb_context *ctdb,
482 struct timeval timeout, uint32_t destnode,
483 struct ctdb_server_id_list **svid_list);
486 struct timeval current_time;
487 struct timeval ctdbd_start_time;
488 struct timeval last_recovery_time;
491 int ctdb_socket_connect(struct ctdb_context *ctdb);
494 get the uptime of a remote node
496 int ctdb_ctrl_uptime(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, struct ctdb_uptime **uptime);
498 struct ctdb_client_control_state *ctdb_ctrl_uptime_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode);
500 int ctdb_ctrl_uptime_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state, struct ctdb_uptime **uptime);