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03b27bd139
Signed-off-by: Christof Schmitt <cs@samba.org> Reviewed-by: Amitay Isaacs <amitay@gmail.com>
1369 lines
37 KiB
C
1369 lines
37 KiB
C
/*
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ctdb recovery code
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Copyright (C) Andrew Tridgell 2007
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Copyright (C) Ronnie Sahlberg 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "replace.h"
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#include "system/time.h"
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#include "system/network.h"
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#include "system/filesys.h"
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#include "system/wait.h"
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#include <talloc.h>
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#include <tevent.h>
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#include <tdb.h>
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#include "lib/tdb_wrap/tdb_wrap.h"
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#include "lib/util/dlinklist.h"
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#include "lib/util/debug.h"
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#include "lib/util/samba_util.h"
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#include "lib/util/util_process.h"
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#include "ctdb_private.h"
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#include "ctdb_client.h"
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#include "common/system.h"
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#include "common/common.h"
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#include "common/logging.h"
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int
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ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
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{
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struct ctdb_vnn_map_wire *map;
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size_t len;
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CHECK_CONTROL_DATA_SIZE(0);
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len = offsetof(struct ctdb_vnn_map_wire, map) + sizeof(uint32_t)*ctdb->vnn_map->size;
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map = talloc_size(outdata, len);
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CTDB_NO_MEMORY(ctdb, map);
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map->generation = ctdb->vnn_map->generation;
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map->size = ctdb->vnn_map->size;
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memcpy(map->map, ctdb->vnn_map->map, sizeof(uint32_t)*map->size);
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outdata->dsize = len;
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outdata->dptr = (uint8_t *)map;
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return 0;
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}
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int
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ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
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{
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struct ctdb_vnn_map_wire *map = (struct ctdb_vnn_map_wire *)indata.dptr;
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if (ctdb->recovery_mode != CTDB_RECOVERY_ACTIVE) {
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DEBUG(DEBUG_ERR, ("Attempt to set vnnmap when not in recovery\n"));
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return -1;
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}
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talloc_free(ctdb->vnn_map);
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ctdb->vnn_map = talloc(ctdb, struct ctdb_vnn_map);
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CTDB_NO_MEMORY(ctdb, ctdb->vnn_map);
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ctdb->vnn_map->generation = map->generation;
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ctdb->vnn_map->size = map->size;
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ctdb->vnn_map->map = talloc_array(ctdb->vnn_map, uint32_t, map->size);
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CTDB_NO_MEMORY(ctdb, ctdb->vnn_map->map);
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memcpy(ctdb->vnn_map->map, map->map, sizeof(uint32_t)*map->size);
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return 0;
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}
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int
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ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
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{
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uint32_t i, len;
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struct ctdb_db_context *ctdb_db;
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struct ctdb_dbid_map_old *dbid_map;
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CHECK_CONTROL_DATA_SIZE(0);
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len = 0;
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for(ctdb_db=ctdb->db_list;ctdb_db;ctdb_db=ctdb_db->next){
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len++;
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}
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outdata->dsize = offsetof(struct ctdb_dbid_map_old, dbs) + sizeof(dbid_map->dbs[0])*len;
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outdata->dptr = (unsigned char *)talloc_zero_size(outdata, outdata->dsize);
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if (!outdata->dptr) {
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DEBUG(DEBUG_ALERT, (__location__ " Failed to allocate dbmap array\n"));
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exit(1);
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}
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dbid_map = (struct ctdb_dbid_map_old *)outdata->dptr;
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dbid_map->num = len;
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for (i=0,ctdb_db=ctdb->db_list;ctdb_db;i++,ctdb_db=ctdb_db->next){
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dbid_map->dbs[i].db_id = ctdb_db->db_id;
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if (ctdb_db->persistent != 0) {
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dbid_map->dbs[i].flags |= CTDB_DB_FLAGS_PERSISTENT;
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}
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if (ctdb_db->readonly != 0) {
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dbid_map->dbs[i].flags |= CTDB_DB_FLAGS_READONLY;
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}
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if (ctdb_db->sticky != 0) {
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dbid_map->dbs[i].flags |= CTDB_DB_FLAGS_STICKY;
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}
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}
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return 0;
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}
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int
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ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata)
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{
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CHECK_CONTROL_DATA_SIZE(0);
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outdata->dptr = (unsigned char *)ctdb_node_list_to_map(ctdb->nodes,
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ctdb->num_nodes,
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outdata);
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if (outdata->dptr == NULL) {
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return -1;
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}
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outdata->dsize = talloc_get_size(outdata->dptr);
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return 0;
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}
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/*
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reload the nodes file
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*/
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int
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ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode)
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{
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int i, num_nodes;
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TALLOC_CTX *tmp_ctx;
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struct ctdb_node **nodes;
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tmp_ctx = talloc_new(ctdb);
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/* steal the old nodes file for a while */
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talloc_steal(tmp_ctx, ctdb->nodes);
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nodes = ctdb->nodes;
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ctdb->nodes = NULL;
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num_nodes = ctdb->num_nodes;
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ctdb->num_nodes = 0;
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/* load the new nodes file */
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ctdb_load_nodes_file(ctdb);
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for (i=0; i<ctdb->num_nodes; i++) {
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/* keep any identical pre-existing nodes and connections */
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if ((i < num_nodes) && ctdb_same_address(&ctdb->nodes[i]->address, &nodes[i]->address)) {
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talloc_free(ctdb->nodes[i]);
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ctdb->nodes[i] = talloc_steal(ctdb->nodes, nodes[i]);
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continue;
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}
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if (ctdb->nodes[i]->flags & NODE_FLAGS_DELETED) {
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continue;
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}
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/* any new or different nodes must be added */
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if (ctdb->methods->add_node(ctdb->nodes[i]) != 0) {
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DEBUG(DEBUG_CRIT, (__location__ " methods->add_node failed at %d\n", i));
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ctdb_fatal(ctdb, "failed to add node. shutting down\n");
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}
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if (ctdb->methods->connect_node(ctdb->nodes[i]) != 0) {
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DEBUG(DEBUG_CRIT, (__location__ " methods->add_connect failed at %d\n", i));
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ctdb_fatal(ctdb, "failed to connect to node. shutting down\n");
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}
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}
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/* tell the recovery daemon to reaload the nodes file too */
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ctdb_daemon_send_message(ctdb, ctdb->pnn, CTDB_SRVID_RELOAD_NODES, tdb_null);
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talloc_free(tmp_ctx);
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return 0;
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}
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/*
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a traverse function for pulling all relevent records from pulldb
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*/
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struct pulldb_data {
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struct ctdb_context *ctdb;
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struct ctdb_db_context *ctdb_db;
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struct ctdb_marshall_buffer *pulldata;
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uint32_t len;
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uint32_t allocated_len;
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bool failed;
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};
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static int traverse_pulldb(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
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{
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struct pulldb_data *params = (struct pulldb_data *)p;
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struct ctdb_rec_data_old *rec;
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struct ctdb_context *ctdb = params->ctdb;
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struct ctdb_db_context *ctdb_db = params->ctdb_db;
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/* add the record to the blob */
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rec = ctdb_marshall_record(params->pulldata, 0, key, NULL, data);
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if (rec == NULL) {
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params->failed = true;
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return -1;
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}
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if (params->len + rec->length >= params->allocated_len) {
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params->allocated_len = rec->length + params->len + ctdb->tunable.pulldb_preallocation_size;
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params->pulldata = talloc_realloc_size(NULL, params->pulldata, params->allocated_len);
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}
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if (params->pulldata == NULL) {
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DEBUG(DEBUG_CRIT,(__location__ " Failed to expand pulldb_data to %u\n", rec->length + params->len));
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ctdb_fatal(params->ctdb, "failed to allocate memory for recovery. shutting down\n");
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}
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params->pulldata->count++;
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memcpy(params->len+(uint8_t *)params->pulldata, rec, rec->length);
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params->len += rec->length;
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if (ctdb->tunable.db_record_size_warn != 0 && rec->length > ctdb->tunable.db_record_size_warn) {
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DEBUG(DEBUG_ERR,("Data record in %s is big. Record size is %d bytes\n", ctdb_db->db_name, (int)rec->length));
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}
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talloc_free(rec);
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return 0;
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}
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/*
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pull a bunch of records from a ltdb, filtering by lmaster
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*/
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int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata)
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{
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struct ctdb_pulldb *pull;
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struct ctdb_db_context *ctdb_db;
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struct pulldb_data params;
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struct ctdb_marshall_buffer *reply;
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pull = (struct ctdb_pulldb *)indata.dptr;
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ctdb_db = find_ctdb_db(ctdb, pull->db_id);
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if (!ctdb_db) {
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DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", pull->db_id));
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return -1;
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}
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if (!ctdb_db_frozen(ctdb_db)) {
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DEBUG(DEBUG_ERR,
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("rejecting ctdb_control_pull_db when not frozen\n"));
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return -1;
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}
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reply = talloc_zero(outdata, struct ctdb_marshall_buffer);
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CTDB_NO_MEMORY(ctdb, reply);
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reply->db_id = pull->db_id;
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params.ctdb = ctdb;
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params.ctdb_db = ctdb_db;
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params.pulldata = reply;
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params.len = offsetof(struct ctdb_marshall_buffer, data);
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params.allocated_len = params.len;
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params.failed = false;
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if (ctdb_db->unhealthy_reason) {
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/* this is just a warning, as the tdb should be empty anyway */
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DEBUG(DEBUG_WARNING,("db(%s) unhealty in ctdb_control_pull_db: %s\n",
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ctdb_db->db_name, ctdb_db->unhealthy_reason));
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}
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if (ctdb_lockdb_mark(ctdb_db) != 0) {
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DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entire db - failing\n"));
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return -1;
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}
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if (tdb_traverse_read(ctdb_db->ltdb->tdb, traverse_pulldb, ¶ms) == -1) {
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DEBUG(DEBUG_ERR,(__location__ " Failed to get traverse db '%s'\n", ctdb_db->db_name));
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ctdb_lockdb_unmark(ctdb_db);
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talloc_free(params.pulldata);
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return -1;
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}
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ctdb_lockdb_unmark(ctdb_db);
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outdata->dptr = (uint8_t *)params.pulldata;
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outdata->dsize = params.len;
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if (ctdb->tunable.db_record_count_warn != 0 && params.pulldata->count > ctdb->tunable.db_record_count_warn) {
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DEBUG(DEBUG_ERR,("Database %s is big. Contains %d records\n", ctdb_db->db_name, params.pulldata->count));
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}
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if (ctdb->tunable.db_size_warn != 0 && outdata->dsize > ctdb->tunable.db_size_warn) {
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DEBUG(DEBUG_ERR,("Database %s is big. Contains %d bytes\n", ctdb_db->db_name, (int)outdata->dsize));
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}
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return 0;
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}
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/*
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push a bunch of records into a ltdb, filtering by rsn
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*/
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int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata)
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{
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struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
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struct ctdb_db_context *ctdb_db;
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int i, ret;
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struct ctdb_rec_data_old *rec;
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if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
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DEBUG(DEBUG_ERR,(__location__ " invalid data in pulldb reply\n"));
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return -1;
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}
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ctdb_db = find_ctdb_db(ctdb, reply->db_id);
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if (!ctdb_db) {
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DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", reply->db_id));
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return -1;
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}
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if (!ctdb_db_frozen(ctdb_db)) {
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DEBUG(DEBUG_ERR,
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("rejecting ctdb_control_push_db when not frozen\n"));
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return -1;
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}
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if (ctdb_lockdb_mark(ctdb_db) != 0) {
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DEBUG(DEBUG_ERR,(__location__ " Failed to get lock on entire db - failing\n"));
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return -1;
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}
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rec = (struct ctdb_rec_data_old *)&reply->data[0];
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DEBUG(DEBUG_INFO,("starting push of %u records for dbid 0x%x\n",
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reply->count, reply->db_id));
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for (i=0;i<reply->count;i++) {
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TDB_DATA key, data;
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struct ctdb_ltdb_header *hdr;
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key.dptr = &rec->data[0];
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key.dsize = rec->keylen;
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data.dptr = &rec->data[key.dsize];
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data.dsize = rec->datalen;
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if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
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DEBUG(DEBUG_CRIT,(__location__ " bad ltdb record\n"));
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goto failed;
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}
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hdr = (struct ctdb_ltdb_header *)data.dptr;
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/* strip off any read only record flags. All readonly records
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are revoked implicitely by a recovery
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*/
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hdr->flags &= ~CTDB_REC_RO_FLAGS;
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data.dptr += sizeof(*hdr);
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data.dsize -= sizeof(*hdr);
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ret = ctdb_ltdb_store(ctdb_db, key, hdr, data);
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if (ret != 0) {
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DEBUG(DEBUG_CRIT, (__location__ " Unable to store record\n"));
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goto failed;
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}
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rec = (struct ctdb_rec_data_old *)(rec->length + (uint8_t *)rec);
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}
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DEBUG(DEBUG_DEBUG,("finished push of %u records for dbid 0x%x\n",
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reply->count, reply->db_id));
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if (ctdb_db->readonly) {
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DEBUG(DEBUG_CRIT,("Clearing the tracking database for dbid 0x%x\n",
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ctdb_db->db_id));
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if (tdb_wipe_all(ctdb_db->rottdb) != 0) {
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DEBUG(DEBUG_ERR,("Failed to wipe tracking database for 0x%x. Dropping read-only delegation support\n", ctdb_db->db_id));
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ctdb_db->readonly = false;
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tdb_close(ctdb_db->rottdb);
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ctdb_db->rottdb = NULL;
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ctdb_db->readonly = false;
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}
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while (ctdb_db->revokechild_active != NULL) {
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talloc_free(ctdb_db->revokechild_active);
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}
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}
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ctdb_lockdb_unmark(ctdb_db);
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return 0;
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failed:
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ctdb_lockdb_unmark(ctdb_db);
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return -1;
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}
|
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|
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struct ctdb_set_recmode_state {
|
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struct ctdb_context *ctdb;
|
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struct ctdb_req_control_old *c;
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uint32_t recmode;
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int fd[2];
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struct tevent_timer *te;
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struct tevent_fd *fde;
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pid_t child;
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struct timeval start_time;
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};
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|
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/*
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|
called if our set_recmode child times out. this would happen if
|
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ctdb_recovery_lock() would block.
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*/
|
|
static void ctdb_set_recmode_timeout(struct tevent_context *ev,
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|
struct tevent_timer *te,
|
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struct timeval t, void *private_data)
|
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{
|
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struct ctdb_set_recmode_state *state = talloc_get_type(private_data,
|
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struct ctdb_set_recmode_state);
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|
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/* we consider this a success, not a failure, as we failed to
|
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set the recovery lock which is what we wanted. This can be
|
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caused by the cluster filesystem being very slow to
|
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arbitrate locks immediately after a node failure.
|
|
*/
|
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DEBUG(DEBUG_ERR,(__location__ " set_recmode child process hung/timedout CFS slow to grant locks? (allowing recmode set anyway)\n"));
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state->ctdb->recovery_mode = state->recmode;
|
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ctdb_request_control_reply(state->ctdb, state->c, NULL, 0, NULL);
|
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talloc_free(state);
|
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}
|
|
|
|
|
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/* when we free the recmode state we must kill any child process.
|
|
*/
|
|
static int set_recmode_destructor(struct ctdb_set_recmode_state *state)
|
|
{
|
|
double l = timeval_elapsed(&state->start_time);
|
|
|
|
CTDB_UPDATE_RECLOCK_LATENCY(state->ctdb, "daemon reclock", reclock.ctdbd, l);
|
|
|
|
if (state->fd[0] != -1) {
|
|
state->fd[0] = -1;
|
|
}
|
|
if (state->fd[1] != -1) {
|
|
state->fd[1] = -1;
|
|
}
|
|
ctdb_kill(state->ctdb, state->child, SIGKILL);
|
|
return 0;
|
|
}
|
|
|
|
/* this is called when the client process has completed ctdb_recovery_lock()
|
|
and has written data back to us through the pipe.
|
|
*/
|
|
static void set_recmode_handler(struct tevent_context *ev,
|
|
struct tevent_fd *fde,
|
|
uint16_t flags, void *private_data)
|
|
{
|
|
struct ctdb_set_recmode_state *state= talloc_get_type(private_data,
|
|
struct ctdb_set_recmode_state);
|
|
char c = 0;
|
|
int ret;
|
|
|
|
/* we got a response from our child process so we can abort the
|
|
timeout.
|
|
*/
|
|
talloc_free(state->te);
|
|
state->te = NULL;
|
|
|
|
|
|
/* If, as expected, the child was unable to take the recovery
|
|
* lock then it will have written 0 into the pipe, so
|
|
* continue. However, any other value (e.g. 1) indicates that
|
|
* it was able to take the recovery lock when it should have
|
|
* been held by the recovery daemon on the recovery master.
|
|
*/
|
|
ret = sys_read(state->fd[0], &c, 1);
|
|
if (ret != 1 || c != 0) {
|
|
ctdb_request_control_reply(
|
|
state->ctdb, state->c, NULL, -1,
|
|
"Took recovery lock from daemon during recovery - probably a cluster filesystem lock coherence problem");
|
|
talloc_free(state);
|
|
return;
|
|
}
|
|
|
|
state->ctdb->recovery_mode = state->recmode;
|
|
|
|
/* release any deferred attach calls from clients */
|
|
if (state->recmode == CTDB_RECOVERY_NORMAL) {
|
|
ctdb_process_deferred_attach(state->ctdb);
|
|
}
|
|
|
|
ctdb_request_control_reply(state->ctdb, state->c, NULL, 0, NULL);
|
|
talloc_free(state);
|
|
return;
|
|
}
|
|
|
|
static void
|
|
ctdb_drop_all_ips_event(struct tevent_context *ev, struct tevent_timer *te,
|
|
struct timeval t, void *private_data)
|
|
{
|
|
struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
|
|
|
|
DEBUG(DEBUG_ERR,(__location__ " Been in recovery mode for too long. Dropping all IPS\n"));
|
|
talloc_free(ctdb->release_ips_ctx);
|
|
ctdb->release_ips_ctx = NULL;
|
|
|
|
ctdb_release_all_ips(ctdb);
|
|
}
|
|
|
|
/*
|
|
* Set up an event to drop all public ips if we remain in recovery for too
|
|
* long
|
|
*/
|
|
int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb)
|
|
{
|
|
if (ctdb->release_ips_ctx != NULL) {
|
|
talloc_free(ctdb->release_ips_ctx);
|
|
}
|
|
ctdb->release_ips_ctx = talloc_new(ctdb);
|
|
CTDB_NO_MEMORY(ctdb, ctdb->release_ips_ctx);
|
|
|
|
tevent_add_timer(ctdb->ev, ctdb->release_ips_ctx,
|
|
timeval_current_ofs(ctdb->tunable.recovery_drop_all_ips, 0),
|
|
ctdb_drop_all_ips_event, ctdb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
set the recovery mode
|
|
*/
|
|
int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
|
|
struct ctdb_req_control_old *c,
|
|
TDB_DATA indata, bool *async_reply,
|
|
const char **errormsg)
|
|
{
|
|
uint32_t recmode = *(uint32_t *)indata.dptr;
|
|
int i, ret;
|
|
struct ctdb_set_recmode_state *state;
|
|
pid_t parent = getpid();
|
|
struct ctdb_db_context *ctdb_db;
|
|
|
|
/* if we enter recovery but stay in recovery for too long
|
|
we will eventually drop all our ip addresses
|
|
*/
|
|
if (recmode == CTDB_RECOVERY_NORMAL) {
|
|
talloc_free(ctdb->release_ips_ctx);
|
|
ctdb->release_ips_ctx = NULL;
|
|
} else {
|
|
if (ctdb_deferred_drop_all_ips(ctdb) != 0) {
|
|
DEBUG(DEBUG_ERR,("Failed to set up deferred drop all ips\n"));
|
|
}
|
|
}
|
|
|
|
if (recmode != ctdb->recovery_mode) {
|
|
DEBUG(DEBUG_NOTICE,(__location__ " Recovery mode set to %s\n",
|
|
recmode==CTDB_RECOVERY_NORMAL?"NORMAL":"ACTIVE"));
|
|
}
|
|
|
|
if (recmode != CTDB_RECOVERY_NORMAL ||
|
|
ctdb->recovery_mode != CTDB_RECOVERY_ACTIVE) {
|
|
ctdb->recovery_mode = recmode;
|
|
return 0;
|
|
}
|
|
|
|
/* some special handling when ending recovery mode */
|
|
|
|
for (ctdb_db = ctdb->db_list; ctdb_db != NULL; ctdb_db = ctdb_db->next) {
|
|
if (ctdb_db->generation != ctdb->vnn_map->generation) {
|
|
DEBUG(DEBUG_ERR,
|
|
("Inconsistent DB generation %u for %s\n",
|
|
ctdb_db->generation, ctdb_db->db_name));
|
|
DEBUG(DEBUG_ERR, ("Recovery mode set to ACTIVE\n"));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* force the databases to thaw */
|
|
for (i=1; i<=NUM_DB_PRIORITIES; i++) {
|
|
if (ctdb_db_prio_frozen(ctdb, i)) {
|
|
ctdb_control_thaw(ctdb, i, false);
|
|
}
|
|
}
|
|
|
|
state = talloc(ctdb, struct ctdb_set_recmode_state);
|
|
CTDB_NO_MEMORY(ctdb, state);
|
|
|
|
state->start_time = timeval_current();
|
|
state->fd[0] = -1;
|
|
state->fd[1] = -1;
|
|
|
|
/* release any deferred attach calls from clients */
|
|
if (recmode == CTDB_RECOVERY_NORMAL) {
|
|
ctdb_process_deferred_attach(ctdb);
|
|
}
|
|
|
|
if (ctdb->recovery_lock_file == NULL) {
|
|
/* Not using recovery lock file */
|
|
ctdb->recovery_mode = recmode;
|
|
return 0;
|
|
}
|
|
|
|
/* For the rest of what needs to be done, we need to do this in
|
|
a child process since
|
|
1, the call to ctdb_recovery_lock() can block if the cluster
|
|
filesystem is in the process of recovery.
|
|
*/
|
|
ret = pipe(state->fd);
|
|
if (ret != 0) {
|
|
talloc_free(state);
|
|
DEBUG(DEBUG_CRIT,(__location__ " Failed to open pipe for set_recmode child\n"));
|
|
return -1;
|
|
}
|
|
|
|
state->child = ctdb_fork(ctdb);
|
|
if (state->child == (pid_t)-1) {
|
|
close(state->fd[0]);
|
|
close(state->fd[1]);
|
|
talloc_free(state);
|
|
return -1;
|
|
}
|
|
|
|
if (state->child == 0) {
|
|
char cc = 0;
|
|
close(state->fd[0]);
|
|
|
|
prctl_set_comment("ctdb_recmode");
|
|
debug_extra = talloc_asprintf(NULL, "set_recmode:");
|
|
/* Daemon should not be able to get the recover lock,
|
|
* as it should be held by the recovery master */
|
|
if (ctdb_recovery_lock(ctdb)) {
|
|
DEBUG(DEBUG_ERR,
|
|
("ERROR: Daemon able to take recovery lock on \"%s\" during recovery\n",
|
|
ctdb->recovery_lock_file));
|
|
ctdb_recovery_unlock(ctdb);
|
|
cc = 1;
|
|
}
|
|
|
|
sys_write(state->fd[1], &cc, 1);
|
|
/* make sure we die when our parent dies */
|
|
while (ctdb_kill(ctdb, parent, 0) == 0 || errno != ESRCH) {
|
|
sleep(5);
|
|
sys_write(state->fd[1], &cc, 1);
|
|
}
|
|
_exit(0);
|
|
}
|
|
close(state->fd[1]);
|
|
set_close_on_exec(state->fd[0]);
|
|
|
|
state->fd[1] = -1;
|
|
|
|
talloc_set_destructor(state, set_recmode_destructor);
|
|
|
|
DEBUG(DEBUG_DEBUG, (__location__ " Created PIPE FD:%d for setrecmode\n", state->fd[0]));
|
|
|
|
state->te = tevent_add_timer(ctdb->ev, state, timeval_current_ofs(5, 0),
|
|
ctdb_set_recmode_timeout, state);
|
|
|
|
state->fde = tevent_add_fd(ctdb->ev, state, state->fd[0], TEVENT_FD_READ,
|
|
set_recmode_handler, (void *)state);
|
|
|
|
if (state->fde == NULL) {
|
|
talloc_free(state);
|
|
return -1;
|
|
}
|
|
tevent_fd_set_auto_close(state->fde);
|
|
|
|
state->ctdb = ctdb;
|
|
state->recmode = recmode;
|
|
state->c = talloc_steal(state, c);
|
|
|
|
*async_reply = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
bool ctdb_recovery_have_lock(struct ctdb_context *ctdb)
|
|
{
|
|
return ctdb->recovery_lock_fd != -1;
|
|
}
|
|
|
|
/*
|
|
try and get the recovery lock in shared storage - should only work
|
|
on the recovery master recovery daemon. Anywhere else is a bug
|
|
*/
|
|
bool ctdb_recovery_lock(struct ctdb_context *ctdb)
|
|
{
|
|
struct flock lock;
|
|
|
|
ctdb->recovery_lock_fd = open(ctdb->recovery_lock_file,
|
|
O_RDWR|O_CREAT, 0600);
|
|
if (ctdb->recovery_lock_fd == -1) {
|
|
DEBUG(DEBUG_ERR,
|
|
("ctdb_recovery_lock: Unable to open %s - (%s)\n",
|
|
ctdb->recovery_lock_file, strerror(errno)));
|
|
return false;
|
|
}
|
|
|
|
set_close_on_exec(ctdb->recovery_lock_fd);
|
|
|
|
lock.l_type = F_WRLCK;
|
|
lock.l_whence = SEEK_SET;
|
|
lock.l_start = 0;
|
|
lock.l_len = 1;
|
|
lock.l_pid = 0;
|
|
|
|
if (fcntl(ctdb->recovery_lock_fd, F_SETLK, &lock) != 0) {
|
|
int saved_errno = errno;
|
|
close(ctdb->recovery_lock_fd);
|
|
ctdb->recovery_lock_fd = -1;
|
|
/* Fail silently on these errors, since they indicate
|
|
* lock contention, but log an error for any other
|
|
* failure. */
|
|
if (saved_errno != EACCES &&
|
|
saved_errno != EAGAIN) {
|
|
DEBUG(DEBUG_ERR,("ctdb_recovery_lock: Failed to get "
|
|
"recovery lock on '%s' - (%s)\n",
|
|
ctdb->recovery_lock_file,
|
|
strerror(saved_errno)));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void ctdb_recovery_unlock(struct ctdb_context *ctdb)
|
|
{
|
|
if (ctdb->recovery_lock_fd != -1) {
|
|
DEBUG(DEBUG_NOTICE, ("Releasing recovery lock\n"));
|
|
close(ctdb->recovery_lock_fd);
|
|
ctdb->recovery_lock_fd = -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
delete a record as part of the vacuum process
|
|
only delete if we are not lmaster or dmaster, and our rsn is <= the provided rsn
|
|
use non-blocking locks
|
|
|
|
return 0 if the record was successfully deleted (i.e. it does not exist
|
|
when the function returns)
|
|
or !0 is the record still exists in the tdb after returning.
|
|
*/
|
|
static int delete_tdb_record(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db, struct ctdb_rec_data_old *rec)
|
|
{
|
|
TDB_DATA key, data, data2;
|
|
struct ctdb_ltdb_header *hdr, *hdr2;
|
|
|
|
/* these are really internal tdb functions - but we need them here for
|
|
non-blocking lock of the freelist */
|
|
int tdb_lock_nonblock(struct tdb_context *tdb, int list, int ltype);
|
|
int tdb_unlock(struct tdb_context *tdb, int list, int ltype);
|
|
|
|
|
|
key.dsize = rec->keylen;
|
|
key.dptr = &rec->data[0];
|
|
data.dsize = rec->datalen;
|
|
data.dptr = &rec->data[rec->keylen];
|
|
|
|
if (ctdb_lmaster(ctdb, &key) == ctdb->pnn) {
|
|
DEBUG(DEBUG_INFO,(__location__ " Called delete on record where we are lmaster\n"));
|
|
return -1;
|
|
}
|
|
|
|
if (data.dsize != sizeof(struct ctdb_ltdb_header)) {
|
|
DEBUG(DEBUG_ERR,(__location__ " Bad record size\n"));
|
|
return -1;
|
|
}
|
|
|
|
hdr = (struct ctdb_ltdb_header *)data.dptr;
|
|
|
|
/* use a non-blocking lock */
|
|
if (tdb_chainlock_nonblock(ctdb_db->ltdb->tdb, key) != 0) {
|
|
return -1;
|
|
}
|
|
|
|
data2 = tdb_fetch(ctdb_db->ltdb->tdb, key);
|
|
if (data2.dptr == NULL) {
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
return 0;
|
|
}
|
|
|
|
if (data2.dsize < sizeof(struct ctdb_ltdb_header)) {
|
|
if (tdb_lock_nonblock(ctdb_db->ltdb->tdb, -1, F_WRLCK) == 0) {
|
|
if (tdb_delete(ctdb_db->ltdb->tdb, key) != 0) {
|
|
DEBUG(DEBUG_CRIT,(__location__ " Failed to delete corrupt record\n"));
|
|
}
|
|
tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
|
|
DEBUG(DEBUG_CRIT,(__location__ " Deleted corrupt record\n"));
|
|
}
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
free(data2.dptr);
|
|
return 0;
|
|
}
|
|
|
|
hdr2 = (struct ctdb_ltdb_header *)data2.dptr;
|
|
|
|
if (hdr2->rsn > hdr->rsn) {
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
DEBUG(DEBUG_INFO,(__location__ " Skipping record with rsn=%llu - called with rsn=%llu\n",
|
|
(unsigned long long)hdr2->rsn, (unsigned long long)hdr->rsn));
|
|
free(data2.dptr);
|
|
return -1;
|
|
}
|
|
|
|
/* do not allow deleting record that have readonly flags set. */
|
|
if (hdr->flags & CTDB_REC_RO_FLAGS) {
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
DEBUG(DEBUG_INFO,(__location__ " Skipping record with readonly flags set\n"));
|
|
free(data2.dptr);
|
|
return -1;
|
|
}
|
|
if (hdr2->flags & CTDB_REC_RO_FLAGS) {
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
DEBUG(DEBUG_INFO,(__location__ " Skipping record with readonly flags set\n"));
|
|
free(data2.dptr);
|
|
return -1;
|
|
}
|
|
|
|
if (hdr2->dmaster == ctdb->pnn) {
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
DEBUG(DEBUG_INFO,(__location__ " Attempted delete record where we are the dmaster\n"));
|
|
free(data2.dptr);
|
|
return -1;
|
|
}
|
|
|
|
if (tdb_lock_nonblock(ctdb_db->ltdb->tdb, -1, F_WRLCK) != 0) {
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
free(data2.dptr);
|
|
return -1;
|
|
}
|
|
|
|
if (tdb_delete(ctdb_db->ltdb->tdb, key) != 0) {
|
|
tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
DEBUG(DEBUG_INFO,(__location__ " Failed to delete record\n"));
|
|
free(data2.dptr);
|
|
return -1;
|
|
}
|
|
|
|
tdb_unlock(ctdb_db->ltdb->tdb, -1, F_WRLCK);
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
free(data2.dptr);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
struct recovery_callback_state {
|
|
struct ctdb_req_control_old *c;
|
|
};
|
|
|
|
|
|
/*
|
|
called when the 'recovered' event script has finished
|
|
*/
|
|
static void ctdb_end_recovery_callback(struct ctdb_context *ctdb, int status, void *p)
|
|
{
|
|
struct recovery_callback_state *state = talloc_get_type(p, struct recovery_callback_state);
|
|
|
|
ctdb_enable_monitoring(ctdb);
|
|
CTDB_INCREMENT_STAT(ctdb, num_recoveries);
|
|
|
|
if (status != 0) {
|
|
DEBUG(DEBUG_ERR,(__location__ " recovered event script failed (status %d)\n", status));
|
|
if (status == -ETIME) {
|
|
ctdb_ban_self(ctdb);
|
|
}
|
|
}
|
|
|
|
ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
|
|
talloc_free(state);
|
|
|
|
gettimeofday(&ctdb->last_recovery_finished, NULL);
|
|
|
|
if (ctdb->runstate == CTDB_RUNSTATE_FIRST_RECOVERY) {
|
|
ctdb_set_runstate(ctdb, CTDB_RUNSTATE_STARTUP);
|
|
}
|
|
}
|
|
|
|
/*
|
|
recovery has finished
|
|
*/
|
|
int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
|
|
struct ctdb_req_control_old *c,
|
|
bool *async_reply)
|
|
{
|
|
int ret;
|
|
struct recovery_callback_state *state;
|
|
|
|
DEBUG(DEBUG_NOTICE,("Recovery has finished\n"));
|
|
|
|
ctdb_persistent_finish_trans3_commits(ctdb);
|
|
|
|
state = talloc(ctdb, struct recovery_callback_state);
|
|
CTDB_NO_MEMORY(ctdb, state);
|
|
|
|
state->c = c;
|
|
|
|
ctdb_disable_monitoring(ctdb);
|
|
|
|
ret = ctdb_event_script_callback(ctdb, state,
|
|
ctdb_end_recovery_callback,
|
|
state,
|
|
CTDB_EVENT_RECOVERED, "%s", "");
|
|
|
|
if (ret != 0) {
|
|
ctdb_enable_monitoring(ctdb);
|
|
|
|
DEBUG(DEBUG_ERR,(__location__ " Failed to end recovery\n"));
|
|
talloc_free(state);
|
|
return -1;
|
|
}
|
|
|
|
/* tell the control that we will be reply asynchronously */
|
|
state->c = talloc_steal(state, c);
|
|
*async_reply = true;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
called when the 'startrecovery' event script has finished
|
|
*/
|
|
static void ctdb_start_recovery_callback(struct ctdb_context *ctdb, int status, void *p)
|
|
{
|
|
struct recovery_callback_state *state = talloc_get_type(p, struct recovery_callback_state);
|
|
|
|
if (status != 0) {
|
|
DEBUG(DEBUG_ERR,(__location__ " startrecovery event script failed (status %d)\n", status));
|
|
}
|
|
|
|
ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
|
|
talloc_free(state);
|
|
}
|
|
|
|
/*
|
|
run the startrecovery eventscript
|
|
*/
|
|
int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
|
|
struct ctdb_req_control_old *c,
|
|
bool *async_reply)
|
|
{
|
|
int ret;
|
|
struct recovery_callback_state *state;
|
|
|
|
DEBUG(DEBUG_NOTICE,(__location__ " startrecovery eventscript has been invoked\n"));
|
|
gettimeofday(&ctdb->last_recovery_started, NULL);
|
|
|
|
state = talloc(ctdb, struct recovery_callback_state);
|
|
CTDB_NO_MEMORY(ctdb, state);
|
|
|
|
state->c = talloc_steal(state, c);
|
|
|
|
ctdb_disable_monitoring(ctdb);
|
|
|
|
ret = ctdb_event_script_callback(ctdb, state,
|
|
ctdb_start_recovery_callback,
|
|
state,
|
|
CTDB_EVENT_START_RECOVERY,
|
|
"%s", "");
|
|
|
|
if (ret != 0) {
|
|
DEBUG(DEBUG_ERR,(__location__ " Failed to start recovery\n"));
|
|
talloc_free(state);
|
|
return -1;
|
|
}
|
|
|
|
/* tell the control that we will be reply asynchronously */
|
|
*async_reply = true;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
try to delete all these records as part of the vacuuming process
|
|
and return the records we failed to delete
|
|
*/
|
|
int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata)
|
|
{
|
|
struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
|
|
struct ctdb_db_context *ctdb_db;
|
|
int i;
|
|
struct ctdb_rec_data_old *rec;
|
|
struct ctdb_marshall_buffer *records;
|
|
|
|
if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
|
|
DEBUG(DEBUG_ERR,(__location__ " invalid data in try_delete_records\n"));
|
|
return -1;
|
|
}
|
|
|
|
ctdb_db = find_ctdb_db(ctdb, reply->db_id);
|
|
if (!ctdb_db) {
|
|
DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", reply->db_id));
|
|
return -1;
|
|
}
|
|
|
|
|
|
DEBUG(DEBUG_DEBUG,("starting try_delete_records of %u records for dbid 0x%x\n",
|
|
reply->count, reply->db_id));
|
|
|
|
|
|
/* create a blob to send back the records we couldnt delete */
|
|
records = (struct ctdb_marshall_buffer *)
|
|
talloc_zero_size(outdata,
|
|
offsetof(struct ctdb_marshall_buffer, data));
|
|
if (records == NULL) {
|
|
DEBUG(DEBUG_ERR,(__location__ " Out of memory\n"));
|
|
return -1;
|
|
}
|
|
records->db_id = ctdb_db->db_id;
|
|
|
|
|
|
rec = (struct ctdb_rec_data_old *)&reply->data[0];
|
|
for (i=0;i<reply->count;i++) {
|
|
TDB_DATA key, data;
|
|
|
|
key.dptr = &rec->data[0];
|
|
key.dsize = rec->keylen;
|
|
data.dptr = &rec->data[key.dsize];
|
|
data.dsize = rec->datalen;
|
|
|
|
if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
|
|
DEBUG(DEBUG_CRIT,(__location__ " bad ltdb record in indata\n"));
|
|
return -1;
|
|
}
|
|
|
|
/* If we cant delete the record we must add it to the reply
|
|
so the lmaster knows it may not purge this record
|
|
*/
|
|
if (delete_tdb_record(ctdb, ctdb_db, rec) != 0) {
|
|
size_t old_size;
|
|
struct ctdb_ltdb_header *hdr;
|
|
|
|
hdr = (struct ctdb_ltdb_header *)data.dptr;
|
|
data.dptr += sizeof(*hdr);
|
|
data.dsize -= sizeof(*hdr);
|
|
|
|
DEBUG(DEBUG_INFO, (__location__ " Failed to vacuum delete record with hash 0x%08x\n", ctdb_hash(&key)));
|
|
|
|
old_size = talloc_get_size(records);
|
|
records = talloc_realloc_size(outdata, records, old_size + rec->length);
|
|
if (records == NULL) {
|
|
DEBUG(DEBUG_ERR,(__location__ " Failed to expand\n"));
|
|
return -1;
|
|
}
|
|
records->count++;
|
|
memcpy(old_size+(uint8_t *)records, rec, rec->length);
|
|
}
|
|
|
|
rec = (struct ctdb_rec_data_old *)(rec->length + (uint8_t *)rec);
|
|
}
|
|
|
|
|
|
*outdata = ctdb_marshall_finish(records);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Store a record as part of the vacuum process:
|
|
* This is called from the RECEIVE_RECORD control which
|
|
* the lmaster uses to send the current empty copy
|
|
* to all nodes for storing, before it lets the other
|
|
* nodes delete the records in the second phase with
|
|
* the TRY_DELETE_RECORDS control.
|
|
*
|
|
* Only store if we are not lmaster or dmaster, and our
|
|
* rsn is <= the provided rsn. Use non-blocking locks.
|
|
*
|
|
* return 0 if the record was successfully stored.
|
|
* return !0 if the record still exists in the tdb after returning.
|
|
*/
|
|
static int store_tdb_record(struct ctdb_context *ctdb,
|
|
struct ctdb_db_context *ctdb_db,
|
|
struct ctdb_rec_data_old *rec)
|
|
{
|
|
TDB_DATA key, data, data2;
|
|
struct ctdb_ltdb_header *hdr, *hdr2;
|
|
int ret;
|
|
|
|
key.dsize = rec->keylen;
|
|
key.dptr = &rec->data[0];
|
|
data.dsize = rec->datalen;
|
|
data.dptr = &rec->data[rec->keylen];
|
|
|
|
if (ctdb_lmaster(ctdb, &key) == ctdb->pnn) {
|
|
DEBUG(DEBUG_INFO, (__location__ " Called store_tdb_record "
|
|
"where we are lmaster\n"));
|
|
return -1;
|
|
}
|
|
|
|
if (data.dsize != sizeof(struct ctdb_ltdb_header)) {
|
|
DEBUG(DEBUG_ERR, (__location__ " Bad record size\n"));
|
|
return -1;
|
|
}
|
|
|
|
hdr = (struct ctdb_ltdb_header *)data.dptr;
|
|
|
|
/* use a non-blocking lock */
|
|
if (tdb_chainlock_nonblock(ctdb_db->ltdb->tdb, key) != 0) {
|
|
DEBUG(DEBUG_INFO, (__location__ " Failed to lock chain in non-blocking mode\n"));
|
|
return -1;
|
|
}
|
|
|
|
data2 = tdb_fetch(ctdb_db->ltdb->tdb, key);
|
|
if (data2.dptr == NULL || data2.dsize < sizeof(struct ctdb_ltdb_header)) {
|
|
if (tdb_store(ctdb_db->ltdb->tdb, key, data, 0) == -1) {
|
|
DEBUG(DEBUG_ERR, (__location__ "Failed to store record\n"));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
DEBUG(DEBUG_INFO, (__location__ " Stored record\n"));
|
|
ret = 0;
|
|
goto done;
|
|
}
|
|
|
|
hdr2 = (struct ctdb_ltdb_header *)data2.dptr;
|
|
|
|
if (hdr2->rsn > hdr->rsn) {
|
|
DEBUG(DEBUG_INFO, (__location__ " Skipping record with "
|
|
"rsn=%llu - called with rsn=%llu\n",
|
|
(unsigned long long)hdr2->rsn,
|
|
(unsigned long long)hdr->rsn));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* do not allow vacuuming of records that have readonly flags set. */
|
|
if (hdr->flags & CTDB_REC_RO_FLAGS) {
|
|
DEBUG(DEBUG_INFO,(__location__ " Skipping record with readonly "
|
|
"flags set\n"));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
if (hdr2->flags & CTDB_REC_RO_FLAGS) {
|
|
DEBUG(DEBUG_INFO,(__location__ " Skipping record with readonly "
|
|
"flags set\n"));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
if (hdr2->dmaster == ctdb->pnn) {
|
|
DEBUG(DEBUG_INFO, (__location__ " Attempted to store record "
|
|
"where we are the dmaster\n"));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
if (tdb_store(ctdb_db->ltdb->tdb, key, data, 0) != 0) {
|
|
DEBUG(DEBUG_INFO,(__location__ " Failed to store record\n"));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
done:
|
|
tdb_chainunlock(ctdb_db->ltdb->tdb, key);
|
|
free(data2.dptr);
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Try to store all these records as part of the vacuuming process
|
|
* and return the records we failed to store.
|
|
*/
|
|
int32_t ctdb_control_receive_records(struct ctdb_context *ctdb,
|
|
TDB_DATA indata, TDB_DATA *outdata)
|
|
{
|
|
struct ctdb_marshall_buffer *reply = (struct ctdb_marshall_buffer *)indata.dptr;
|
|
struct ctdb_db_context *ctdb_db;
|
|
int i;
|
|
struct ctdb_rec_data_old *rec;
|
|
struct ctdb_marshall_buffer *records;
|
|
|
|
if (indata.dsize < offsetof(struct ctdb_marshall_buffer, data)) {
|
|
DEBUG(DEBUG_ERR,
|
|
(__location__ " invalid data in receive_records\n"));
|
|
return -1;
|
|
}
|
|
|
|
ctdb_db = find_ctdb_db(ctdb, reply->db_id);
|
|
if (!ctdb_db) {
|
|
DEBUG(DEBUG_ERR, (__location__ " Unknown db 0x%08x\n",
|
|
reply->db_id));
|
|
return -1;
|
|
}
|
|
|
|
DEBUG(DEBUG_DEBUG, ("starting receive_records of %u records for "
|
|
"dbid 0x%x\n", reply->count, reply->db_id));
|
|
|
|
/* create a blob to send back the records we could not store */
|
|
records = (struct ctdb_marshall_buffer *)
|
|
talloc_zero_size(outdata,
|
|
offsetof(struct ctdb_marshall_buffer, data));
|
|
if (records == NULL) {
|
|
DEBUG(DEBUG_ERR, (__location__ " Out of memory\n"));
|
|
return -1;
|
|
}
|
|
records->db_id = ctdb_db->db_id;
|
|
|
|
rec = (struct ctdb_rec_data_old *)&reply->data[0];
|
|
for (i=0; i<reply->count; i++) {
|
|
TDB_DATA key, data;
|
|
|
|
key.dptr = &rec->data[0];
|
|
key.dsize = rec->keylen;
|
|
data.dptr = &rec->data[key.dsize];
|
|
data.dsize = rec->datalen;
|
|
|
|
if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
|
|
DEBUG(DEBUG_CRIT, (__location__ " bad ltdb record "
|
|
"in indata\n"));
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* If we can not store the record we must add it to the reply
|
|
* so the lmaster knows it may not purge this record.
|
|
*/
|
|
if (store_tdb_record(ctdb, ctdb_db, rec) != 0) {
|
|
size_t old_size;
|
|
struct ctdb_ltdb_header *hdr;
|
|
|
|
hdr = (struct ctdb_ltdb_header *)data.dptr;
|
|
data.dptr += sizeof(*hdr);
|
|
data.dsize -= sizeof(*hdr);
|
|
|
|
DEBUG(DEBUG_INFO, (__location__ " Failed to store "
|
|
"record with hash 0x%08x in vacuum "
|
|
"via RECEIVE_RECORDS\n",
|
|
ctdb_hash(&key)));
|
|
|
|
old_size = talloc_get_size(records);
|
|
records = talloc_realloc_size(outdata, records,
|
|
old_size + rec->length);
|
|
if (records == NULL) {
|
|
DEBUG(DEBUG_ERR, (__location__ " Failed to "
|
|
"expand\n"));
|
|
return -1;
|
|
}
|
|
records->count++;
|
|
memcpy(old_size+(uint8_t *)records, rec, rec->length);
|
|
}
|
|
|
|
rec = (struct ctdb_rec_data_old *)(rec->length + (uint8_t *)rec);
|
|
}
|
|
|
|
*outdata = ctdb_marshall_finish(records);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
report capabilities
|
|
*/
|
|
int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata)
|
|
{
|
|
uint32_t *capabilities = NULL;
|
|
|
|
capabilities = talloc(outdata, uint32_t);
|
|
CTDB_NO_MEMORY(ctdb, capabilities);
|
|
*capabilities = ctdb->capabilities;
|
|
|
|
outdata->dsize = sizeof(uint32_t);
|
|
outdata->dptr = (uint8_t *)capabilities;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The recovery daemon will ping us at regular intervals.
|
|
If we havent been pinged for a while we assume the recovery
|
|
daemon is inoperable and we restart.
|
|
*/
|
|
static void ctdb_recd_ping_timeout(struct tevent_context *ev,
|
|
struct tevent_timer *te,
|
|
struct timeval t, void *p)
|
|
{
|
|
struct ctdb_context *ctdb = talloc_get_type(p, struct ctdb_context);
|
|
uint32_t *count = talloc_get_type(ctdb->recd_ping_count, uint32_t);
|
|
|
|
DEBUG(DEBUG_ERR, ("Recovery daemon ping timeout. Count : %u\n", *count));
|
|
|
|
if (*count < ctdb->tunable.recd_ping_failcount) {
|
|
(*count)++;
|
|
tevent_add_timer(ctdb->ev, ctdb->recd_ping_count,
|
|
timeval_current_ofs(ctdb->tunable.recd_ping_timeout, 0),
|
|
ctdb_recd_ping_timeout, ctdb);
|
|
return;
|
|
}
|
|
|
|
DEBUG(DEBUG_ERR, ("Final timeout for recovery daemon ping. Restarting recovery daemon. (This can be caused if the cluster filesystem has hung)\n"));
|
|
|
|
ctdb_stop_recoverd(ctdb);
|
|
ctdb_start_recoverd(ctdb);
|
|
}
|
|
|
|
int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb)
|
|
{
|
|
talloc_free(ctdb->recd_ping_count);
|
|
|
|
ctdb->recd_ping_count = talloc_zero(ctdb, uint32_t);
|
|
CTDB_NO_MEMORY(ctdb, ctdb->recd_ping_count);
|
|
|
|
if (ctdb->tunable.recd_ping_timeout != 0) {
|
|
tevent_add_timer(ctdb->ev, ctdb->recd_ping_count,
|
|
timeval_current_ofs(ctdb->tunable.recd_ping_timeout, 0),
|
|
ctdb_recd_ping_timeout, ctdb);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata)
|
|
{
|
|
uint32_t new_recmaster;
|
|
|
|
CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
|
|
new_recmaster = ((uint32_t *)(&indata.dptr[0]))[0];
|
|
|
|
if (ctdb->pnn != new_recmaster && ctdb->recovery_master == ctdb->pnn) {
|
|
DEBUG(DEBUG_NOTICE,
|
|
("This node (%u) is no longer the recovery master\n", ctdb->pnn));
|
|
}
|
|
|
|
if (ctdb->pnn == new_recmaster && ctdb->recovery_master != new_recmaster) {
|
|
DEBUG(DEBUG_NOTICE,
|
|
("This node (%u) is now the recovery master\n", ctdb->pnn));
|
|
}
|
|
|
|
ctdb->recovery_master = new_recmaster;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int32_t ctdb_control_stop_node(struct ctdb_context *ctdb)
|
|
{
|
|
DEBUG(DEBUG_NOTICE, ("Stopping node\n"));
|
|
ctdb_disable_monitoring(ctdb);
|
|
ctdb->nodes[ctdb->pnn]->flags |= NODE_FLAGS_STOPPED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int32_t ctdb_control_continue_node(struct ctdb_context *ctdb)
|
|
{
|
|
DEBUG(DEBUG_NOTICE, ("Continue node\n"));
|
|
ctdb->nodes[ctdb->pnn]->flags &= ~NODE_FLAGS_STOPPED;
|
|
|
|
return 0;
|
|
}
|
|
|