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 if (parse_ip(ctdb->nodes[i]->address.address, &node_map->nodes[i].addr) == 0) {
167 DEBUG(DEBUG_ERR, (__location__ " Failed to parse %s into a sockaddr\n", ctdb->nodes[i]->address.address));
170 node_map->nodes[i].pnn = ctdb->nodes[i]->pnn;
171 node_map->nodes[i].flags = ctdb->nodes[i]->flags;
178 get an old style ipv4-only nodemap
181 ctdb_control_getnodemapv4(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
183 uint32_t i, num_nodes;
184 struct ctdb_node_mapv4 *node_map;
186 CHECK_CONTROL_DATA_SIZE(0);
188 num_nodes = ctdb->num_nodes;
190 outdata->dsize = offsetof(struct ctdb_node_mapv4, nodes) + num_nodes*sizeof(struct ctdb_node_and_flagsv4);
191 outdata->dptr = (unsigned char *)talloc_zero_size(outdata, outdata->dsize);
192 if (!outdata->dptr) {
193 DEBUG(DEBUG_ALERT, (__location__ " Failed to allocate nodemap array\n"));
197 node_map = (struct ctdb_node_mapv4 *)outdata->dptr;
198 node_map->num = num_nodes;
199 for (i=0; i<num_nodes; i++) {
200 if (parse_ipv4(ctdb->nodes[i]->address.address, 0, &node_map->nodes[i].sin) == 0) {
201 DEBUG(DEBUG_ERR, (__location__ " Failed to parse %s into a sockaddr\n", ctdb->nodes[i]->address.address));
205 node_map->nodes[i].pnn = ctdb->nodes[i]->pnn;
206 node_map->nodes[i].flags = ctdb->nodes[i]->flags;
213 ctdb_reload_nodes_event(struct event_context *ev, struct timed_event *te,
214 struct timeval t, void *private_data)
218 struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
220 ctdb_load_nodes_file(ctdb);
222 for (i=0; i<ctdb->num_nodes; i++) {
223 if (ctdb->methods->add_node(ctdb->nodes[i]) != 0) {
224 DEBUG(DEBUG_CRIT, (__location__ " methods->add_node failed at %d\n", i));
225 ctdb_fatal(ctdb, "failed to add node. shutting down\n");
228 ctdb->methods->start(ctdb);
234 reload the nodes file after a short delay (so that we can send the response
238 ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode)
240 event_add_timed(ctdb->ev, ctdb, timeval_current_ofs(1,0), ctdb_reload_nodes_event, ctdb);
246 a traverse function for pulling all relevent records from pulldb
249 struct ctdb_context *ctdb;
250 struct ctdb_marshall_buffer *pulldata;
255 static int traverse_pulldb(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
257 struct pulldb_data *params = (struct pulldb_data *)p;
258 struct ctdb_rec_data *rec;
260 /* add the record to the blob */
261 rec = ctdb_marshall_record(params->pulldata, 0, key, NULL, data);
263 params->failed = true;
266 params->pulldata = talloc_realloc_size(NULL, params->pulldata, rec->length + params->len);
267 if (params->pulldata == NULL) {
268 DEBUG(DEBUG_ERR,(__location__ " Failed to expand pulldb_data to %u (%u records)\n",
269 rec->length + params->len, params->pulldata->count));
270 params->failed = true;
273 params->pulldata->count++;
274 memcpy(params->len+(uint8_t *)params->pulldata, rec, rec->length);
275 params->len += rec->length;
282 pul a bunch of records from a ltdb, filtering by lmaster
284 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata)
286 struct ctdb_control_pulldb *pull;
287 struct ctdb_db_context *ctdb_db;
288 struct pulldb_data params;
289 struct ctdb_marshall_buffer *reply;
291 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
292 DEBUG(DEBUG_DEBUG,("rejecting ctdb_control_pull_db when not frozen\n"));
296 pull = (struct ctdb_control_pulldb *)indata.dptr;
298 ctdb_db = find_ctdb_db(ctdb, pull->db_id);
300 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", pull->db_id));
304 reply = talloc_zero(outdata, struct ctdb_marshall_buffer);
305 CTDB_NO_MEMORY(ctdb, reply);
307 reply->db_id = pull->db_id;
310 params.pulldata = reply;
311 params.len = offsetof(struct ctdb_marshall_buffer, data);
312 params.failed = false;
314 if (ctdb_lock_all_databases_mark(ctdb) != 0) {
315 DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entired db - failing\n"));
319 if (tdb_traverse_read(ctdb_db->ltdb->tdb, traverse_pulldb, ¶ms) == -1) {
320 DEBUG(DEBUG_ERR,(__location__ " Failed to get traverse db '%s'\n", ctdb_db->db_name));
321 ctdb_lock_all_databases_unmark(ctdb);
322 talloc_free(params.pulldata);
326 ctdb_lock_all_databases_unmark(ctdb);
328 outdata->dptr = (uint8_t *)params.pulldata;
329 outdata->dsize = params.len;
335 push a bunch of records into a ltdb, filtering by rsn
337 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata)
339 struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
340 struct ctdb_db_context *ctdb_db;
342 struct ctdb_rec_data *rec;
344 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
345 DEBUG(DEBUG_DEBUG,("rejecting ctdb_control_push_db when not frozen\n"));
349 if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
350 DEBUG(DEBUG_ERR,(__location__ " invalid data in pulldb reply\n"));
354 ctdb_db = find_ctdb_db(ctdb, reply->db_id);
356 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", reply->db_id));
360 if (ctdb_lock_all_databases_mark(ctdb) != 0) {
361 DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entired db - failing\n"));
365 rec = (struct ctdb_rec_data *)&reply->data[0];
367 DEBUG(DEBUG_INFO,("starting push of %u records for dbid 0x%x\n",
368 reply->count, reply->db_id));
370 for (i=0;i<reply->count;i++) {
372 struct ctdb_ltdb_header *hdr;
374 key.dptr = &rec->data[0];
375 key.dsize = rec->keylen;
376 data.dptr = &rec->data[key.dsize];
377 data.dsize = rec->datalen;
379 if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
380 DEBUG(DEBUG_CRIT,(__location__ " bad ltdb record\n"));
383 hdr = (struct ctdb_ltdb_header *)data.dptr;
384 data.dptr += sizeof(*hdr);
385 data.dsize -= sizeof(*hdr);
387 ret = ctdb_ltdb_store(ctdb_db, key, hdr, data);
389 DEBUG(DEBUG_CRIT, (__location__ " Unable to store record\n"));
393 rec = (struct ctdb_rec_data *)(rec->length + (uint8_t *)rec);
396 DEBUG(DEBUG_DEBUG,("finished push of %u records for dbid 0x%x\n",
397 reply->count, reply->db_id));
399 ctdb_lock_all_databases_unmark(ctdb);
403 ctdb_lock_all_databases_unmark(ctdb);
408 static int traverse_setdmaster(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
410 uint32_t *dmaster = (uint32_t *)p;
411 struct ctdb_ltdb_header *header = (struct ctdb_ltdb_header *)data.dptr;
414 /* skip if already correct */
415 if (header->dmaster == *dmaster) {
419 header->dmaster = *dmaster;
421 ret = tdb_store(tdb, key, data, TDB_REPLACE);
423 DEBUG(DEBUG_CRIT,(__location__ " failed to write tdb data back ret:%d\n",ret));
427 /* TODO: add error checking here */
432 int32_t ctdb_control_set_dmaster(struct ctdb_context *ctdb, TDB_DATA indata)
434 struct ctdb_control_set_dmaster *p = (struct ctdb_control_set_dmaster *)indata.dptr;
435 struct ctdb_db_context *ctdb_db;
437 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
438 DEBUG(DEBUG_DEBUG,("rejecting ctdb_control_set_dmaster when not frozen\n"));
442 ctdb_db = find_ctdb_db(ctdb, p->db_id);
444 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", p->db_id));
448 if (ctdb_lock_all_databases_mark(ctdb) != 0) {
449 DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entired db - failing\n"));
453 tdb_traverse(ctdb_db->ltdb->tdb, traverse_setdmaster, &p->dmaster);
455 ctdb_lock_all_databases_unmark(ctdb);
460 struct ctdb_set_recmode_state {
461 struct ctdb_context *ctdb;
462 struct ctdb_req_control *c;
465 struct timed_event *te;
466 struct fd_event *fde;
471 called if our set_recmode child times out. this would happen if
472 ctdb_recovery_lock() would block.
474 static void ctdb_set_recmode_timeout(struct event_context *ev, struct timed_event *te,
475 struct timeval t, void *private_data)
477 struct ctdb_set_recmode_state *state = talloc_get_type(private_data,
478 struct ctdb_set_recmode_state);
480 ctdb_request_control_reply(state->ctdb, state->c, NULL, -1, "timeout in ctdb_set_recmode");
485 /* when we free the recmode state we must kill any child process.
487 static int set_recmode_destructor(struct ctdb_set_recmode_state *state)
489 kill(state->child, SIGKILL);
493 /* this is called when the client process has completed ctdb_recovery_lock()
494 and has written data back to us through the pipe.
496 static void set_recmode_handler(struct event_context *ev, struct fd_event *fde,
497 uint16_t flags, void *private_data)
499 struct ctdb_set_recmode_state *state= talloc_get_type(private_data,
500 struct ctdb_set_recmode_state);
504 /* we got a response from our child process so we can abort the
507 talloc_free(state->te);
511 /* read the childs status when trying to lock the reclock file.
512 child wrote 0 if everything is fine and 1 if it did manage
513 to lock the file, which would be a problem since that means
514 we got a request to exit from recovery but we could still lock
515 the file which at this time SHOULD be locked by the recovery
516 daemon on the recmaster
518 ret = read(state->fd[0], &c, 1);
519 if (ret != 1 || c != 0) {
520 ctdb_request_control_reply(state->ctdb, state->c, NULL, -1, "managed to lock reclock file from inside daemon");
525 state->ctdb->recovery_mode = state->recmode;
527 ctdb_request_control_reply(state->ctdb, state->c, NULL, 0, NULL);
533 ctdb_drop_all_ips_event(struct event_context *ev, struct timed_event *te,
534 struct timeval t, void *private_data)
536 struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
538 DEBUG(DEBUG_INFO,(__location__ " Been in recovery mode for too long. Dropping all IPS\n"));
539 talloc_free(ctdb->release_ips_ctx);
540 ctdb->release_ips_ctx = NULL;
542 ctdb_release_all_ips(ctdb);
546 set the recovery mode
548 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
549 struct ctdb_req_control *c,
550 TDB_DATA indata, bool *async_reply,
551 const char **errormsg)
553 uint32_t recmode = *(uint32_t *)indata.dptr;
555 struct ctdb_set_recmode_state *state;
556 pid_t parent = getpid();
558 /* if we enter recovery but stay in recovery for too long
559 we will eventually drop all our ip addresses
561 if (recmode == CTDB_RECOVERY_NORMAL) {
562 talloc_free(ctdb->release_ips_ctx);
563 ctdb->release_ips_ctx = NULL;
565 talloc_free(ctdb->release_ips_ctx);
566 ctdb->release_ips_ctx = talloc_new(ctdb);
567 CTDB_NO_MEMORY(ctdb, ctdb->release_ips_ctx);
569 event_add_timed(ctdb->ev, ctdb->release_ips_ctx, timeval_current_ofs(5,0), ctdb_drop_all_ips_event, ctdb);
573 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
574 DEBUG(DEBUG_ERR,("Attempt to change recovery mode to %u when not frozen\n",
576 (*errormsg) = "Cannot change recovery mode while not frozen";
580 if (recmode != ctdb->recovery_mode) {
581 DEBUG(DEBUG_NOTICE,(__location__ " Recovery mode set to %s\n",
582 recmode==CTDB_RECOVERY_NORMAL?"NORMAL":"ACTIVE"));
585 if (recmode != CTDB_RECOVERY_NORMAL ||
586 ctdb->recovery_mode != CTDB_RECOVERY_ACTIVE) {
587 ctdb->recovery_mode = recmode;
591 /* some special handling when ending recovery mode */
593 /* force the databased to thaw */
594 if (ctdb->freeze_handle) {
595 ctdb_control_thaw(ctdb);
598 state = talloc(ctdb, struct ctdb_set_recmode_state);
599 CTDB_NO_MEMORY(ctdb, state);
601 /* For the rest of what needs to be done, we need to do this in
602 a child process since
603 1, the call to ctdb_recovery_lock() can block if the cluster
604 filesystem is in the process of recovery.
605 2, running of the script may take a while.
607 ret = pipe(state->fd);
610 DEBUG(DEBUG_CRIT,(__location__ " Failed to open pipe for set_recmode child\n"));
614 state->child = fork();
615 if (state->child == (pid_t)-1) {
622 if (state->child == 0) {
626 /* we should not be able to get the lock on the nodes list,
627 as it should be held by the recovery master
629 if (ctdb_recovery_lock(ctdb, false)) {
630 DEBUG(DEBUG_CRIT,("ERROR: recovery lock file %s not locked when recovering!\n", ctdb->recovery_lock_file));
634 write(state->fd[1], &cc, 1);
635 /* make sure we die when our parent dies */
636 while (kill(parent, 0) == 0 || errno != ESRCH) {
643 talloc_set_destructor(state, set_recmode_destructor);
645 state->te = event_add_timed(ctdb->ev, state, timeval_current_ofs(3, 0),
646 ctdb_set_recmode_timeout, state);
648 state->fde = event_add_fd(ctdb->ev, state, state->fd[0],
649 EVENT_FD_READ|EVENT_FD_AUTOCLOSE,
652 if (state->fde == NULL) {
658 state->recmode = recmode;
659 state->c = talloc_steal(state, c);
668 try and get the recovery lock in shared storage - should only work
669 on the recovery master recovery daemon. Anywhere else is a bug
671 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep)
675 if (ctdb->recovery_lock_fd != -1) {
676 close(ctdb->recovery_lock_fd);
678 ctdb->recovery_lock_fd = open(ctdb->recovery_lock_file, O_RDWR|O_CREAT, 0600);
679 if (ctdb->recovery_lock_fd == -1) {
680 DEBUG(DEBUG_ERR,("ctdb_recovery_lock: Unable to open %s - (%s)\n",
681 ctdb->recovery_lock_file, strerror(errno)));
685 set_close_on_exec(ctdb->recovery_lock_fd);
687 lock.l_type = F_WRLCK;
688 lock.l_whence = SEEK_SET;
693 if (fcntl(ctdb->recovery_lock_fd, F_SETLK, &lock) != 0) {
694 close(ctdb->recovery_lock_fd);
695 ctdb->recovery_lock_fd = -1;
697 DEBUG(DEBUG_CRIT,("ctdb_recovery_lock: Failed to get recovery lock on '%s'\n", ctdb->recovery_lock_file));
703 close(ctdb->recovery_lock_fd);
704 ctdb->recovery_lock_fd = -1;
707 DEBUG(DEBUG_NOTICE,("ctdb_recovery_lock: Got recovery lock on '%s'\n", ctdb->recovery_lock_file));
713 delete a record as part of the vacuum process
714 only delete if we are not lmaster or dmaster, and our rsn is <= the provided rsn
715 use non-blocking locks
717 return 0 if the record was successfully deleted (i.e. it does not exist
718 when the function returns)
719 or !0 is the record still exists in the tdb after returning.
721 static int delete_tdb_record(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db, struct ctdb_rec_data *rec)
724 struct ctdb_ltdb_header *hdr, *hdr2;
726 /* these are really internal tdb functions - but we need them here for
727 non-blocking lock of the freelist */
728 int tdb_lock_nonblock(struct tdb_context *tdb, int list, int ltype);
729 int tdb_unlock(struct tdb_context *tdb, int list, int ltype);
732 key.dsize = rec->keylen;
733 key.dptr = &rec->data[0];
734 data.dsize = rec->datalen;
735 data.dptr = &rec->data[rec->keylen];
737 if (ctdb_lmaster(ctdb, &key) == ctdb->pnn) {
738 DEBUG(DEBUG_INFO,(__location__ " Called delete on record where we are lmaster\n"));
742 if (data.dsize != sizeof(struct ctdb_ltdb_header)) {
743 DEBUG(DEBUG_ERR,(__location__ " Bad record size\n"));
747 hdr = (struct ctdb_ltdb_header *)data.dptr;
749 /* use a non-blocking lock */
750 if (tdb_chainlock_nonblock(ctdb_db->ltdb->tdb, key) != 0) {
754 data = tdb_fetch(ctdb_db->ltdb->tdb, key);
755 if (data.dptr == NULL) {
756 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
760 if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
761 if (tdb_lock_nonblock(ctdb_db->ltdb->tdb, -1, F_WRLCK) == 0) {
762 tdb_delete(ctdb_db->ltdb->tdb, key);
763 tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
764 DEBUG(DEBUG_CRIT,(__location__ " Deleted corrupt record\n"));
766 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
771 hdr2 = (struct ctdb_ltdb_header *)data.dptr;
773 if (hdr2->rsn > hdr->rsn) {
774 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
775 DEBUG(DEBUG_INFO,(__location__ " Skipping record with rsn=%llu - called with rsn=%llu\n",
776 (unsigned long long)hdr2->rsn, (unsigned long long)hdr->rsn));
781 if (hdr2->dmaster == ctdb->pnn) {
782 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
783 DEBUG(DEBUG_INFO,(__location__ " Attempted delete record where we are the dmaster\n"));
788 if (tdb_lock_nonblock(ctdb_db->ltdb->tdb, -1, F_WRLCK) != 0) {
789 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
794 if (tdb_delete(ctdb_db->ltdb->tdb, key) != 0) {
795 tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
796 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
797 DEBUG(DEBUG_INFO,(__location__ " Failed to delete record\n"));
802 tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
803 tdb_chainunlock(ctdb_db->ltdb->tdb, key);
810 struct recovery_callback_state {
811 struct ctdb_req_control *c;
816 called when the 'recovered' event script has finished
818 static void ctdb_end_recovery_callback(struct ctdb_context *ctdb, int status, void *p)
820 struct recovery_callback_state *state = talloc_get_type(p, struct recovery_callback_state);
822 ctdb_enable_monitoring(ctdb);
825 DEBUG(DEBUG_ERR,(__location__ " recovered event script failed (status %d)\n", status));
828 ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
831 gettimeofday(&ctdb->last_recovery_finished, NULL);
835 recovery has finished
837 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
838 struct ctdb_req_control *c,
842 struct recovery_callback_state *state;
844 DEBUG(DEBUG_NOTICE,("Recovery has finished\n"));
846 state = talloc(ctdb, struct recovery_callback_state);
847 CTDB_NO_MEMORY(ctdb, state);
849 state->c = talloc_steal(state, c);
851 ctdb_disable_monitoring(ctdb);
853 ret = ctdb_event_script_callback(ctdb,
854 timeval_current_ofs(ctdb->tunable.script_timeout, 0),
856 ctdb_end_recovery_callback,
860 ctdb_enable_monitoring(ctdb);
862 DEBUG(DEBUG_ERR,(__location__ " Failed to end recovery\n"));
867 /* tell the control that we will be reply asynchronously */
873 called when the 'startrecovery' event script has finished
875 static void ctdb_start_recovery_callback(struct ctdb_context *ctdb, int status, void *p)
877 struct recovery_callback_state *state = talloc_get_type(p, struct recovery_callback_state);
880 DEBUG(DEBUG_ERR,(__location__ " startrecovery event script failed (status %d)\n", status));
883 ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
888 run the startrecovery eventscript
890 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
891 struct ctdb_req_control *c,
895 struct recovery_callback_state *state;
897 DEBUG(DEBUG_NOTICE,(__location__ " startrecovery eventscript has been invoked\n"));
898 gettimeofday(&ctdb->last_recovery_started, NULL);
900 state = talloc(ctdb, struct recovery_callback_state);
901 CTDB_NO_MEMORY(ctdb, state);
903 state->c = talloc_steal(state, c);
905 ctdb_disable_monitoring(ctdb);
907 ret = ctdb_event_script_callback(ctdb,
908 timeval_current_ofs(ctdb->tunable.script_timeout, 0),
910 ctdb_start_recovery_callback,
911 state, "startrecovery");
914 DEBUG(DEBUG_ERR,(__location__ " Failed to start recovery\n"));
919 /* tell the control that we will be reply asynchronously */
925 try to delete all these records as part of the vacuuming process
926 and return the records we failed to delete
928 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata)
930 struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
931 struct ctdb_db_context *ctdb_db;
933 struct ctdb_rec_data *rec;
934 struct ctdb_marshall_buffer *records;
936 if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
937 DEBUG(DEBUG_ERR,(__location__ " invalid data in try_delete_records\n"));
941 ctdb_db = find_ctdb_db(ctdb, reply->db_id);
943 DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", reply->db_id));
948 DEBUG(DEBUG_DEBUG,("starting try_delete_records of %u records for dbid 0x%x\n",
949 reply->count, reply->db_id));
952 /* create a blob to send back the records we couldnt delete */
953 records = (struct ctdb_marshall_buffer *)
954 talloc_zero_size(outdata,
955 offsetof(struct ctdb_marshall_buffer, data));
956 if (records == NULL) {
957 DEBUG(DEBUG_ERR,(__location__ " Out of memory\n"));
960 records->db_id = ctdb_db->db_id;
963 rec = (struct ctdb_rec_data *)&reply->data[0];
964 for (i=0;i<reply->count;i++) {
967 key.dptr = &rec->data[0];
968 key.dsize = rec->keylen;
969 data.dptr = &rec->data[key.dsize];
970 data.dsize = rec->datalen;
972 if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
973 DEBUG(DEBUG_CRIT,(__location__ " bad ltdb record in indata\n"));
977 /* If we cant delete the record we must add it to the reply
978 so the lmaster knows it may not purge this record
980 if (delete_tdb_record(ctdb, ctdb_db, rec) != 0) {
982 struct ctdb_ltdb_header *hdr;
984 hdr = (struct ctdb_ltdb_header *)data.dptr;
985 data.dptr += sizeof(*hdr);
986 data.dsize -= sizeof(*hdr);
988 DEBUG(DEBUG_INFO, (__location__ " Failed to vacuum delete record with hash 0x%08x\n", ctdb_hash(&key)));
990 old_size = talloc_get_size(records);
991 records = talloc_realloc_size(outdata, records, old_size + rec->length);
992 if (records == NULL) {
993 DEBUG(DEBUG_ERR,(__location__ " Failed to expand\n"));
997 memcpy(old_size+(uint8_t *)records, rec, rec->length);
1000 rec = (struct ctdb_rec_data *)(rec->length + (uint8_t *)rec);
1004 outdata->dptr = (uint8_t *)records;
1005 outdata->dsize = talloc_get_size(records);
1013 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata)
1015 uint32_t *capabilities = NULL;
1017 capabilities = talloc(outdata, uint32_t);
1018 CTDB_NO_MEMORY(ctdb, capabilities);
1019 *capabilities = ctdb->capabilities;
1021 outdata->dsize = sizeof(uint32_t);
1022 outdata->dptr = (uint8_t *)capabilities;
1027 static void ctdb_recd_ping_timeout(struct event_context *ev, struct timed_event *te, struct timeval t, void *p)
1029 struct ctdb_context *ctdb = talloc_get_type(p, struct ctdb_context);
1030 uint32_t *count = talloc_get_type(ctdb->recd_ping_count, uint32_t);
1032 DEBUG(DEBUG_ERR, (__location__ " Recovery daemon ping timeout. Count : %u\n", *count));
1034 if (*count < ctdb->tunable.recd_ping_failcount) {
1036 event_add_timed(ctdb->ev, ctdb->recd_ping_count,
1037 timeval_current_ofs(ctdb->tunable.recd_ping_timeout, 0),
1038 ctdb_recd_ping_timeout, ctdb);
1042 DEBUG(DEBUG_ERR, (__location__ " Final timeout for recovery daemon ping. Shutting down ctdb daemon\n"));
1044 ctdb_stop_recoverd(ctdb);
1045 ctdb_stop_keepalive(ctdb);
1046 ctdb_stop_monitoring(ctdb);
1047 ctdb_release_all_ips(ctdb);
1048 if (ctdb->methods != NULL) {
1049 ctdb->methods->shutdown(ctdb);
1051 ctdb_event_script(ctdb, "shutdown");
1052 DEBUG(DEBUG_ERR, (__location__ " Recovery daemon ping timeout. Daemon has been shut down.\n"));
1056 /* The recovery daemon will ping us at regular intervals.
1057 If we havent been pinged for a while we assume the recovery
1058 daemon is inoperable and we shut down.
1060 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb)
1062 talloc_free(ctdb->recd_ping_count);
1064 ctdb->recd_ping_count = talloc_zero(ctdb, uint32_t);
1065 CTDB_NO_MEMORY(ctdb, ctdb->recd_ping_count);
1067 if (ctdb->tunable.recd_ping_timeout != 0) {
1068 event_add_timed(ctdb->ev, ctdb->recd_ping_count,
1069 timeval_current_ofs(ctdb->tunable.recd_ping_timeout, 0),
1070 ctdb_recd_ping_timeout, ctdb);
1078 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata)
1080 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
1081 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
1082 DEBUG(DEBUG_NOTICE,("Attempt to set recmaster when not frozen\n"));
1085 ctdb->recovery_master = ((uint32_t *)(&indata.dptr[0]))[0];