4 Copyright (C) Andrew Tridgell 2007
5 Copyright (C) Ronnie Sahlberg 2007
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "lib/events/events.h"
22 #include "lib/tdb/include/tdb.h"
23 #include "system/time.h"
24 #include "system/network.h"
25 #include "system/filesys.h"
26 #include "system/wait.h"
27 #include "../include/ctdb_private.h"
28 #include "lib/util/dlinklist.h"
32 lock all databases - mark only
34 static int ctdb_lock_all_databases_mark(struct ctdb_context *ctdb)
36 struct ctdb_db_context *ctdb_db;
37 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
38 DEBUG(DEBUG_ERR,("Attempt to mark all databases locked when not frozen\n"));
41 for (ctdb_db=ctdb->db_list;ctdb_db;ctdb_db=ctdb_db->next) {
42 if (tdb_lockall_mark(ctdb_db->ltdb->tdb) != 0) {
50 lock all databases - unmark only
52 static int ctdb_lock_all_databases_unmark(struct ctdb_context *ctdb)
54 struct ctdb_db_context *ctdb_db;
55 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
56 DEBUG(DEBUG_ERR,("Attempt to unmark all databases locked when not frozen\n"));
59 for (ctdb_db=ctdb->db_list;ctdb_db;ctdb_db=ctdb_db->next) {
60 if (tdb_lockall_unmark(ctdb_db->ltdb->tdb) != 0) {
69 ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
71 CHECK_CONTROL_DATA_SIZE(0);
72 struct ctdb_vnn_map_wire *map;
75 len = offsetof(struct ctdb_vnn_map_wire, map) + sizeof(uint32_t)*ctdb->vnn_map->size;
76 map = talloc_size(outdata, len);
77 CTDB_NO_MEMORY(ctdb, map);
79 map->generation = ctdb->vnn_map->generation;
80 map->size = ctdb->vnn_map->size;
81 memcpy(map->map, ctdb->vnn_map->map, sizeof(uint32_t)*map->size);
84 outdata->dptr = (uint8_t *)map;
90 ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
92 struct ctdb_vnn_map_wire *map = (struct ctdb_vnn_map_wire *)indata.dptr;
94 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
95 DEBUG(DEBUG_ERR,("Attempt to set vnnmap when not frozen\n"));
99 talloc_free(ctdb->vnn_map);
101 ctdb->vnn_map = talloc(ctdb, struct ctdb_vnn_map);
102 CTDB_NO_MEMORY(ctdb, ctdb->vnn_map);
104 ctdb->vnn_map->generation = map->generation;
105 ctdb->vnn_map->size = map->size;
106 ctdb->vnn_map->map = talloc_array(ctdb->vnn_map, uint32_t, map->size);
107 CTDB_NO_MEMORY(ctdb, ctdb->vnn_map->map);
109 memcpy(ctdb->vnn_map->map, map->map, sizeof(uint32_t)*map->size);
115 ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
118 struct ctdb_db_context *ctdb_db;
119 struct ctdb_dbid_map *dbid_map;
121 CHECK_CONTROL_DATA_SIZE(0);
124 for(ctdb_db=ctdb->db_list;ctdb_db;ctdb_db=ctdb_db->next){
129 outdata->dsize = offsetof(struct ctdb_dbid_map, dbs) + sizeof(dbid_map->dbs[0])*len;
130 outdata->dptr = (unsigned char *)talloc_zero_size(outdata, outdata->dsize);
131 if (!outdata->dptr) {
132 DEBUG(DEBUG_ALERT, (__location__ " Failed to allocate dbmap array\n"));
136 dbid_map = (struct ctdb_dbid_map *)outdata->dptr;
138 for (i=0,ctdb_db=ctdb->db_list;ctdb_db;i++,ctdb_db=ctdb_db->next){
139 dbid_map->dbs[i].dbid = ctdb_db->db_id;
140 dbid_map->dbs[i].persistent = ctdb_db->persistent;
147 ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
149 uint32_t i, num_nodes;
150 struct ctdb_node_map *node_map;
152 CHECK_CONTROL_DATA_SIZE(0);
154 num_nodes = ctdb->num_nodes;
156 outdata->dsize = offsetof(struct ctdb_node_map, nodes) + num_nodes*sizeof(struct ctdb_node_and_flags);
157 outdata->dptr = (unsigned char *)talloc_zero_size(outdata, outdata->dsize);
158 if (!outdata->dptr) {
159 DEBUG(DEBUG_ALERT, (__location__ " Failed to allocate nodemap array\n"));
163 node_map = (struct ctdb_node_map *)outdata->dptr;
164 node_map->num = num_nodes;
165 for (i=0; i<num_nodes; i++) {
166 inet_aton(ctdb->nodes[i]->address.address, &node_map->nodes[i].sin.sin_addr);
167 node_map->nodes[i].pnn = ctdb->nodes[i]->pnn;
168 node_map->nodes[i].flags = ctdb->nodes[i]->flags;
175 ctdb_reload_nodes_event(struct event_context *ev, struct timed_event *te,
176 struct timeval t, void *private_data)
179 struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
180 int ctdb_tcp_init(struct ctdb_context *);
182 /* shut down the transport */
183 if (ctdb->methods != NULL) {
184 ctdb->methods->shutdown(ctdb);
187 /* start the transport again */
188 ctdb_load_nodes_file(ctdb);
189 ret = ctdb_tcp_init(ctdb);
191 DEBUG(DEBUG_CRIT, (__location__ " Failed to init TCP\n"));
195 if (ctdb->methods == NULL) {
196 DEBUG(DEBUG_ALERT,(__location__ " Can not restart transport. ctdb->methods==NULL\n"));
197 ctdb_fatal(ctdb, "can not reinitialize transport.");
199 ctdb->methods->initialise(ctdb);
200 ctdb->methods->start(ctdb);
206 reload the nodes file after a short delay (so that we can send the response
210 ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode)
212 event_add_timed(ctdb->ev, ctdb, timeval_current_ofs(1,0), ctdb_reload_nodes_event, ctdb);
218 a traverse function for pulling all relevent records from pulldb
221 struct ctdb_context *ctdb;
222 struct ctdb_marshall_buffer *pulldata;
227 static int traverse_pulldb(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
229 struct pulldb_data *params = (struct pulldb_data *)p;
230 struct ctdb_rec_data *rec;
232 /* add the record to the blob */
233 rec = ctdb_marshall_record(params->pulldata, 0, key, NULL, data);
235 params->failed = true;
238 params->pulldata = talloc_realloc_size(NULL, params->pulldata, rec->length + params->len);
239 if (params->pulldata == NULL) {
240 DEBUG(DEBUG_ERR,(__location__ " Failed to expand pulldb_data to %u (%u records)\n",
241 rec->length + params->len, params->pulldata->count));
242 params->failed = true;
245 params->pulldata->count++;
246 memcpy(params->len+(uint8_t *)params->pulldata, rec, rec->length);
247 params->len += rec->length;
254 pul a bunch of records from a ltdb, filtering by lmaster
256 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata)
258 struct ctdb_control_pulldb *pull;
259 struct ctdb_db_context *ctdb_db;
260 struct pulldb_data params;
261 struct ctdb_marshall_buffer *reply;
263 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
264 DEBUG(DEBUG_DEBUG,("rejecting ctdb_control_pull_db when not frozen\n"));
268 pull = (struct ctdb_control_pulldb *)indata.dptr;
270 ctdb_db = find_ctdb_db(ctdb, pull->db_id);
272 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", pull->db_id));
276 reply = talloc_zero(outdata, struct ctdb_marshall_buffer);
277 CTDB_NO_MEMORY(ctdb, reply);
279 reply->db_id = pull->db_id;
282 params.pulldata = reply;
283 params.len = offsetof(struct ctdb_marshall_buffer, data);
284 params.failed = false;
286 if (ctdb_lock_all_databases_mark(ctdb) != 0) {
287 DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entired db - failing\n"));
291 if (tdb_traverse_read(ctdb_db->ltdb->tdb, traverse_pulldb, ¶ms) == -1) {
292 DEBUG(DEBUG_ERR,(__location__ " Failed to get traverse db '%s'\n", ctdb_db->db_name));
293 ctdb_lock_all_databases_unmark(ctdb);
294 talloc_free(params.pulldata);
298 ctdb_lock_all_databases_unmark(ctdb);
300 outdata->dptr = (uint8_t *)params.pulldata;
301 outdata->dsize = params.len;
307 push a bunch of records into a ltdb, filtering by rsn
309 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata)
311 struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
312 struct ctdb_db_context *ctdb_db;
314 struct ctdb_rec_data *rec;
316 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
317 DEBUG(DEBUG_DEBUG,("rejecting ctdb_control_push_db when not frozen\n"));
321 if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
322 DEBUG(DEBUG_ERR,(__location__ " invalid data in pulldb reply\n"));
326 ctdb_db = find_ctdb_db(ctdb, reply->db_id);
328 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", reply->db_id));
332 if (ctdb_lock_all_databases_mark(ctdb) != 0) {
333 DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entired db - failing\n"));
337 rec = (struct ctdb_rec_data *)&reply->data[0];
339 DEBUG(DEBUG_INFO,("starting push of %u records for dbid 0x%x\n",
340 reply->count, reply->db_id));
342 for (i=0;i<reply->count;i++) {
344 struct ctdb_ltdb_header *hdr;
346 key.dptr = &rec->data[0];
347 key.dsize = rec->keylen;
348 data.dptr = &rec->data[key.dsize];
349 data.dsize = rec->datalen;
351 if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
352 DEBUG(DEBUG_CRIT,(__location__ " bad ltdb record\n"));
355 hdr = (struct ctdb_ltdb_header *)data.dptr;
356 data.dptr += sizeof(*hdr);
357 data.dsize -= sizeof(*hdr);
359 ret = ctdb_ltdb_store(ctdb_db, key, hdr, data);
361 DEBUG(DEBUG_CRIT, (__location__ " Unable to store record\n"));
365 rec = (struct ctdb_rec_data *)(rec->length + (uint8_t *)rec);
368 DEBUG(DEBUG_DEBUG,("finished push of %u records for dbid 0x%x\n",
369 reply->count, reply->db_id));
371 ctdb_lock_all_databases_unmark(ctdb);
375 ctdb_lock_all_databases_unmark(ctdb);
380 static int traverse_setdmaster(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
382 uint32_t *dmaster = (uint32_t *)p;
383 struct ctdb_ltdb_header *header = (struct ctdb_ltdb_header *)data.dptr;
386 /* skip if already correct */
387 if (header->dmaster == *dmaster) {
391 header->dmaster = *dmaster;
393 ret = tdb_store(tdb, key, data, TDB_REPLACE);
395 DEBUG(DEBUG_CRIT,(__location__ " failed to write tdb data back ret:%d\n",ret));
399 /* TODO: add error checking here */
404 int32_t ctdb_control_set_dmaster(struct ctdb_context *ctdb, TDB_DATA indata)
406 struct ctdb_control_set_dmaster *p = (struct ctdb_control_set_dmaster *)indata.dptr;
407 struct ctdb_db_context *ctdb_db;
409 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
410 DEBUG(DEBUG_DEBUG,("rejecting ctdb_control_set_dmaster when not frozen\n"));
414 ctdb_db = find_ctdb_db(ctdb, p->db_id);
416 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", p->db_id));
420 if (ctdb_lock_all_databases_mark(ctdb) != 0) {
421 DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entired db - failing\n"));
425 tdb_traverse(ctdb_db->ltdb->tdb, traverse_setdmaster, &p->dmaster);
427 ctdb_lock_all_databases_unmark(ctdb);
432 struct ctdb_set_recmode_state {
433 struct ctdb_context *ctdb;
434 struct ctdb_req_control *c;
437 struct timed_event *te;
438 struct fd_event *fde;
443 called if our set_recmode child times out. this would happen if
444 ctdb_recovery_lock() would block.
446 static void ctdb_set_recmode_timeout(struct event_context *ev, struct timed_event *te,
447 struct timeval t, void *private_data)
449 struct ctdb_set_recmode_state *state = talloc_get_type(private_data,
450 struct ctdb_set_recmode_state);
452 ctdb_request_control_reply(state->ctdb, state->c, NULL, -1, "timeout in ctdb_set_recmode");
457 /* when we free the recmode state we must kill any child process.
459 static int set_recmode_destructor(struct ctdb_set_recmode_state *state)
461 kill(state->child, SIGKILL);
465 /* this is called when the client process has completed ctdb_recovery_lock()
466 and has written data back to us through the pipe.
468 static void set_recmode_handler(struct event_context *ev, struct fd_event *fde,
469 uint16_t flags, void *private_data)
471 struct ctdb_set_recmode_state *state= talloc_get_type(private_data,
472 struct ctdb_set_recmode_state);
476 /* we got a response from our child process so we can abort the
479 talloc_free(state->te);
483 /* read the childs status when trying to lock the reclock file.
484 child wrote 0 if everything is fine and 1 if it did manage
485 to lock the file, which would be a problem since that means
486 we got a request to exit from recovery but we could still lock
487 the file which at this time SHOULD be locked by the recovery
488 daemon on the recmaster
490 ret = read(state->fd[0], &c, 1);
491 if (ret != 1 || c != 0) {
492 ctdb_request_control_reply(state->ctdb, state->c, NULL, -1, "managed to lock reclock file from inside daemon");
497 state->ctdb->recovery_mode = state->recmode;
499 ctdb_request_control_reply(state->ctdb, state->c, NULL, 0, NULL);
505 set the recovery mode
507 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
508 struct ctdb_req_control *c,
509 TDB_DATA indata, bool *async_reply,
510 const char **errormsg)
512 uint32_t recmode = *(uint32_t *)indata.dptr;
514 struct ctdb_set_recmode_state *state;
515 pid_t parent = getpid();
517 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
518 DEBUG(DEBUG_ERR,("Attempt to change recovery mode to %u when not frozen\n",
520 (*errormsg) = "Cannot change recovery mode while not frozen";
524 if (recmode != ctdb->recovery_mode) {
525 DEBUG(DEBUG_NOTICE,(__location__ " Recovery mode set to %s\n",
526 recmode==CTDB_RECOVERY_NORMAL?"NORMAL":"ACTIVE"));
529 if (recmode != CTDB_RECOVERY_NORMAL ||
530 ctdb->recovery_mode != CTDB_RECOVERY_ACTIVE) {
531 ctdb->recovery_mode = recmode;
535 /* some special handling when ending recovery mode */
537 /* force the databased to thaw */
538 if (ctdb->freeze_handle) {
539 ctdb_control_thaw(ctdb);
542 state = talloc(ctdb, struct ctdb_set_recmode_state);
543 CTDB_NO_MEMORY(ctdb, state);
545 /* For the rest of what needs to be done, we need to do this in
546 a child process since
547 1, the call to ctdb_recovery_lock() can block if the cluster
548 filesystem is in the process of recovery.
549 2, running of the script may take a while.
551 ret = pipe(state->fd);
554 DEBUG(DEBUG_CRIT,(__location__ " Failed to open pipe for set_recmode child\n"));
558 state->child = fork();
559 if (state->child == (pid_t)-1) {
566 if (state->child == 0) {
570 /* we should not be able to get the lock on the nodes list,
571 as it should be held by the recovery master
573 if (ctdb_recovery_lock(ctdb, false)) {
574 DEBUG(DEBUG_CRIT,("ERROR: recovery lock file %s not locked when recovering!\n", ctdb->recovery_lock_file));
578 write(state->fd[1], &cc, 1);
579 /* make sure we die when our parent dies */
580 while (kill(parent, 0) == 0 || errno != ESRCH) {
587 talloc_set_destructor(state, set_recmode_destructor);
589 state->te = event_add_timed(ctdb->ev, state, timeval_current_ofs(3, 0),
590 ctdb_set_recmode_timeout, state);
592 state->fde = event_add_fd(ctdb->ev, state, state->fd[0],
593 EVENT_FD_READ|EVENT_FD_AUTOCLOSE,
596 if (state->fde == NULL) {
602 state->recmode = recmode;
603 state->c = talloc_steal(state, c);
612 try and get the recovery lock in shared storage - should only work
613 on the recovery master recovery daemon. Anywhere else is a bug
615 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep)
619 if (ctdb->recovery_lock_fd != -1) {
620 close(ctdb->recovery_lock_fd);
622 ctdb->recovery_lock_fd = open(ctdb->recovery_lock_file, O_RDWR|O_CREAT, 0600);
623 if (ctdb->recovery_lock_fd == -1) {
624 DEBUG(DEBUG_ERR,("ctdb_recovery_lock: Unable to open %s - (%s)\n",
625 ctdb->recovery_lock_file, strerror(errno)));
629 set_close_on_exec(ctdb->recovery_lock_fd);
631 lock.l_type = F_WRLCK;
632 lock.l_whence = SEEK_SET;
637 if (fcntl(ctdb->recovery_lock_fd, F_SETLK, &lock) != 0) {
638 close(ctdb->recovery_lock_fd);
639 ctdb->recovery_lock_fd = -1;
641 DEBUG(DEBUG_CRIT,("ctdb_recovery_lock: Failed to get recovery lock on '%s'\n", ctdb->recovery_lock_file));
647 close(ctdb->recovery_lock_fd);
648 ctdb->recovery_lock_fd = -1;
651 DEBUG(DEBUG_NOTICE,("ctdb_recovery_lock: Got recovery lock on '%s'\n", ctdb->recovery_lock_file));
657 delete a record as part of the vacuum process
658 only delete if we are not lmaster or dmaster, and our rsn is <= the provided rsn
659 use non-blocking locks
661 return 0 if the record was successfully deleted (i.e. it does not exist
662 when the function returns)
663 or !0 is the record still exists in the tdb after returning.
665 static int delete_tdb_record(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db, struct ctdb_rec_data *rec)
668 struct ctdb_ltdb_header *hdr, *hdr2;
670 /* these are really internal tdb functions - but we need them here for
671 non-blocking lock of the freelist */
672 int tdb_lock_nonblock(struct tdb_context *tdb, int list, int ltype);
673 int tdb_unlock(struct tdb_context *tdb, int list, int ltype);
676 key.dsize = rec->keylen;
677 key.dptr = &rec->data[0];
678 data.dsize = rec->datalen;
679 data.dptr = &rec->data[rec->keylen];
681 if (ctdb_lmaster(ctdb, &key) == ctdb->pnn) {
682 DEBUG(DEBUG_INFO,(__location__ " Called delete on record where we are lmaster\n"));
686 if (data.dsize != sizeof(struct ctdb_ltdb_header)) {
687 DEBUG(DEBUG_ERR,(__location__ " Bad record size\n"));
691 hdr = (struct ctdb_ltdb_header *)data.dptr;
693 /* use a non-blocking lock */
694 if (tdb_chainlock_nonblock(ctdb_db->ltdb->tdb, key) != 0) {
698 data = tdb_fetch(ctdb_db->ltdb->tdb, key);
699 if (data.dptr == NULL) {
700 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
704 if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
705 if (tdb_lock_nonblock(ctdb_db->ltdb->tdb, -1, F_WRLCK) == 0) {
706 tdb_delete(ctdb_db->ltdb->tdb, key);
707 tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
708 DEBUG(DEBUG_CRIT,(__location__ " Deleted corrupt record\n"));
710 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
715 hdr2 = (struct ctdb_ltdb_header *)data.dptr;
717 if (hdr2->rsn > hdr->rsn) {
718 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
719 DEBUG(DEBUG_INFO,(__location__ " Skipping record with rsn=%llu - called with rsn=%llu\n",
720 (unsigned long long)hdr2->rsn, (unsigned long long)hdr->rsn));
725 if (hdr2->dmaster == ctdb->pnn) {
726 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
727 DEBUG(DEBUG_INFO,(__location__ " Attempted delete record where we are the dmaster\n"));
732 if (tdb_lock_nonblock(ctdb_db->ltdb->tdb, -1, F_WRLCK) != 0) {
733 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
738 if (tdb_delete(ctdb_db->ltdb->tdb, key) != 0) {
739 tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
740 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
741 DEBUG(DEBUG_INFO,(__location__ " Failed to delete record\n"));
746 tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
747 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
754 struct recovery_callback_state {
755 struct ctdb_req_control *c;
760 called when the 'recovered' event script has finished
762 static void ctdb_end_recovery_callback(struct ctdb_context *ctdb, int status, void *p)
764 struct recovery_callback_state *state = talloc_get_type(p, struct recovery_callback_state);
766 ctdb_enable_monitoring(ctdb);
769 DEBUG(DEBUG_ERR,(__location__ " recovered event script failed (status %d)\n", status));
772 ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
775 gettimeofday(&ctdb->last_recovery_finished, NULL);
779 recovery has finished
781 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
782 struct ctdb_req_control *c,
786 struct recovery_callback_state *state;
788 DEBUG(DEBUG_NOTICE,("Recovery has finished\n"));
790 state = talloc(ctdb, struct recovery_callback_state);
791 CTDB_NO_MEMORY(ctdb, state);
793 state->c = talloc_steal(state, c);
795 ctdb_disable_monitoring(ctdb);
797 ret = ctdb_event_script_callback(ctdb,
798 timeval_current_ofs(ctdb->tunable.script_timeout, 0),
800 ctdb_end_recovery_callback,
804 ctdb_enable_monitoring(ctdb);
806 DEBUG(DEBUG_ERR,(__location__ " Failed to end recovery\n"));
811 /* tell the control that we will be reply asynchronously */
817 called when the 'startrecovery' event script has finished
819 static void ctdb_start_recovery_callback(struct ctdb_context *ctdb, int status, void *p)
821 struct recovery_callback_state *state = talloc_get_type(p, struct recovery_callback_state);
824 DEBUG(DEBUG_ERR,(__location__ " startrecovery event script failed (status %d)\n", status));
827 ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
832 run the startrecovery eventscript
834 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
835 struct ctdb_req_control *c,
839 struct recovery_callback_state *state;
841 DEBUG(DEBUG_NOTICE,(__location__ " startrecovery eventscript has been invoked\n"));
842 gettimeofday(&ctdb->last_recovery_started, NULL);
844 state = talloc(ctdb, struct recovery_callback_state);
845 CTDB_NO_MEMORY(ctdb, state);
847 state->c = talloc_steal(state, c);
849 ctdb_disable_monitoring(ctdb);
851 ret = ctdb_event_script_callback(ctdb,
852 timeval_current_ofs(ctdb->tunable.script_timeout, 0),
854 ctdb_start_recovery_callback,
855 state, "startrecovery");
858 DEBUG(DEBUG_ERR,(__location__ " Failed to start recovery\n"));
863 /* tell the control that we will be reply asynchronously */
869 try to delete all these records as part of the vacuuming process
870 and return the records we failed to delete
872 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata)
874 struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
875 struct ctdb_db_context *ctdb_db;
877 struct ctdb_rec_data *rec;
878 struct ctdb_marshall_buffer *records;
880 if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
881 DEBUG(DEBUG_ERR,(__location__ " invalid data in try_delete_records\n"));
885 ctdb_db = find_ctdb_db(ctdb, reply->db_id);
887 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", reply->db_id));
892 DEBUG(DEBUG_DEBUG,("starting try_delete_records of %u records for dbid 0x%x\n",
893 reply->count, reply->db_id));
896 /* create a blob to send back the records we couldnt delete */
897 records = (struct ctdb_marshall_buffer *)
898 talloc_zero_size(outdata,
899 offsetof(struct ctdb_marshall_buffer, data));
900 if (records == NULL) {
901 DEBUG(DEBUG_ERR,(__location__ " Out of memory\n"));
904 records->db_id = ctdb_db->db_id;
907 rec = (struct ctdb_rec_data *)&reply->data[0];
908 for (i=0;i<reply->count;i++) {
911 key.dptr = &rec->data[0];
912 key.dsize = rec->keylen;
913 data.dptr = &rec->data[key.dsize];
914 data.dsize = rec->datalen;
916 if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
917 DEBUG(DEBUG_CRIT,(__location__ " bad ltdb record in indata\n"));
921 /* If we cant delete the record we must add it to the reply
922 so the lmaster knows it may not purge this record
924 if (delete_tdb_record(ctdb, ctdb_db, rec) != 0) {
926 struct ctdb_ltdb_header *hdr;
928 hdr = (struct ctdb_ltdb_header *)data.dptr;
929 data.dptr += sizeof(*hdr);
930 data.dsize -= sizeof(*hdr);
932 DEBUG(DEBUG_INFO, (__location__ " Failed to vacuum delete record with hash 0x%08x\n", ctdb_hash(&key)));
934 old_size = talloc_get_size(records);
935 records = talloc_realloc_size(outdata, records, old_size + rec->length);
936 if (records == NULL) {
937 DEBUG(DEBUG_ERR,(__location__ " Failed to expand\n"));
941 memcpy(old_size+(uint8_t *)records, rec, rec->length);
944 rec = (struct ctdb_rec_data *)(rec->length + (uint8_t *)rec);
948 outdata->dptr = (uint8_t *)records;
949 outdata->dsize = talloc_get_size(records);
957 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata)
959 uint32_t *capabilities = NULL;
961 capabilities = talloc(outdata, uint32_t);
962 CTDB_NO_MEMORY(ctdb, capabilities);
963 *capabilities = ctdb->capabilities;
965 outdata->dsize = sizeof(uint32_t);
966 outdata->dptr = (uint8_t *)capabilities;