diff options
Diffstat (limited to 'ctdb/server/ctdb_tunables.c')
| -rw-r--r-- | ctdb/server/ctdb_tunables.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/ctdb/server/ctdb_tunables.c b/ctdb/server/ctdb_tunables.c new file mode 100644 index 0000000000..f760cb57bd --- /dev/null +++ b/ctdb/server/ctdb_tunables.c @@ -0,0 +1,214 @@ +/* + ctdb tunables code + + Copyright (C) Andrew Tridgell 2007 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. +*/ +#include "includes.h" +#include "../include/ctdb_private.h" + +static const struct { + const char *name; + uint32_t default_v; + size_t offset; + bool obsolete; +} tunable_map[] = { + { "MaxRedirectCount", 3, offsetof(struct ctdb_tunable, max_redirect_count), false }, + { "SeqnumInterval", 1000, offsetof(struct ctdb_tunable, seqnum_interval), false }, + { "ControlTimeout", 60, offsetof(struct ctdb_tunable, control_timeout), false }, + { "TraverseTimeout", 20, offsetof(struct ctdb_tunable, traverse_timeout), false }, + { "KeepaliveInterval", 5, offsetof(struct ctdb_tunable, keepalive_interval), false }, + { "KeepaliveLimit", 5, offsetof(struct ctdb_tunable, keepalive_limit), false }, + { "RecoverTimeout", 120, offsetof(struct ctdb_tunable, recover_timeout), false }, + { "RecoverInterval", 1, offsetof(struct ctdb_tunable, recover_interval), false }, + { "ElectionTimeout", 3, offsetof(struct ctdb_tunable, election_timeout), false }, + { "TakeoverTimeout", 9, offsetof(struct ctdb_tunable, takeover_timeout), false }, + { "MonitorInterval", 15, offsetof(struct ctdb_tunable, monitor_interval), false }, + { "TickleUpdateInterval",20, offsetof(struct ctdb_tunable, tickle_update_interval), false }, + { "EventScriptTimeout", 30, offsetof(struct ctdb_tunable, script_timeout), false }, + { "EventScriptTimeoutCount", 20, offsetof(struct ctdb_tunable, script_timeout_count), false }, + { "EventScriptUnhealthyOnTimeout", 0, offsetof(struct ctdb_tunable, script_unhealthy_on_timeout), true }, + { "RecoveryGracePeriod", 120, offsetof(struct ctdb_tunable, recovery_grace_period), false }, + { "RecoveryBanPeriod", 300, offsetof(struct ctdb_tunable, recovery_ban_period), false }, + { "DatabaseHashSize", 100001, offsetof(struct ctdb_tunable, database_hash_size), false }, + { "DatabaseMaxDead", 5, offsetof(struct ctdb_tunable, database_max_dead), false }, + { "RerecoveryTimeout", 10, offsetof(struct ctdb_tunable, rerecovery_timeout), false }, + { "EnableBans", 1, offsetof(struct ctdb_tunable, enable_bans), false }, + { "DeterministicIPs", 0, offsetof(struct ctdb_tunable, deterministic_public_ips), false }, + { "LCP2PublicIPs", 1, offsetof(struct ctdb_tunable, lcp2_public_ip_assignment), false }, + { "ReclockPingPeriod", 60, offsetof(struct ctdb_tunable, reclock_ping_period), false }, + { "NoIPFailback", 0, offsetof(struct ctdb_tunable, no_ip_failback), false }, + { "DisableIPFailover", 0, offsetof(struct ctdb_tunable, disable_ip_failover), false }, + { "VerboseMemoryNames", 0, offsetof(struct ctdb_tunable, verbose_memory_names), false }, + { "RecdPingTimeout", 60, offsetof(struct ctdb_tunable, recd_ping_timeout), false }, + { "RecdFailCount", 10, offsetof(struct ctdb_tunable, recd_ping_failcount), false }, + { "LogLatencyMs", 0, offsetof(struct ctdb_tunable, log_latency_ms), false }, + { "RecLockLatencyMs", 1000, offsetof(struct ctdb_tunable, reclock_latency_ms), false }, + { "RecoveryDropAllIPs", 120, offsetof(struct ctdb_tunable, recovery_drop_all_ips), false }, + { "VerifyRecoveryLock", 1, offsetof(struct ctdb_tunable, verify_recovery_lock), false }, + { "VacuumInterval", 10, offsetof(struct ctdb_tunable, vacuum_interval), false }, + { "VacuumMaxRunTime", 120, offsetof(struct ctdb_tunable, vacuum_max_run_time), false }, + { "RepackLimit", 10000, offsetof(struct ctdb_tunable, repack_limit), false }, + { "VacuumLimit", 5000, offsetof(struct ctdb_tunable, vacuum_limit), false }, + { "VacuumFastPathCount", 60, offsetof(struct ctdb_tunable, vacuum_fast_path_count), false }, + { "MaxQueueDropMsg", 1000000, offsetof(struct ctdb_tunable, max_queue_depth_drop_msg), false }, + { "UseStatusEvents", 0, offsetof(struct ctdb_tunable, use_status_events_for_monitoring), false }, + { "AllowUnhealthyDBRead", 0, offsetof(struct ctdb_tunable, allow_unhealthy_db_read), false }, + { "StatHistoryInterval", 1, offsetof(struct ctdb_tunable, stat_history_interval), false }, + { "DeferredAttachTO", 120, offsetof(struct ctdb_tunable, deferred_attach_timeout), false }, + { "AllowClientDBAttach", 1, offsetof(struct ctdb_tunable, allow_client_db_attach), false }, + { "RecoverPDBBySeqNum", 1, offsetof(struct ctdb_tunable, recover_pdb_by_seqnum), false }, + { "DeferredRebalanceOnNodeAdd", 300, offsetof(struct ctdb_tunable, deferred_rebalance_on_node_add) }, + { "FetchCollapse", 1, offsetof(struct ctdb_tunable, fetch_collapse) }, + { "HopcountMakeSticky", 50, offsetof(struct ctdb_tunable, hopcount_make_sticky) }, + { "StickyDuration", 600, offsetof(struct ctdb_tunable, sticky_duration) }, + { "StickyPindown", 200, offsetof(struct ctdb_tunable, sticky_pindown) }, + { "NoIPTakeover", 0, offsetof(struct ctdb_tunable, no_ip_takeover), false }, + { "DBRecordCountWarn", 100000, offsetof(struct ctdb_tunable, db_record_count_warn), false }, + { "DBRecordSizeWarn", 10000000, offsetof(struct ctdb_tunable, db_record_size_warn), false }, + { "DBSizeWarn", 100000000, offsetof(struct ctdb_tunable, db_size_warn), false }, + { "PullDBPreallocation", 10*1024*1024, offsetof(struct ctdb_tunable, pulldb_preallocation_size), false }, + { "NoIPHostOnAllDisabled", 0, offsetof(struct ctdb_tunable, no_ip_host_on_all_disabled), false }, + { "Samba3AvoidDeadlocks", 0, offsetof(struct ctdb_tunable, samba3_hack), false }, +}; + +/* + set all tunables to defaults + */ +void ctdb_tunables_set_defaults(struct ctdb_context *ctdb) +{ + int i; + for (i=0;i<ARRAY_SIZE(tunable_map);i++) { + *(uint32_t *)(tunable_map[i].offset + (uint8_t*)&ctdb->tunable) = tunable_map[i].default_v; + } +} + + +/* + get a tunable + */ +int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata, + TDB_DATA *outdata) +{ + struct ctdb_control_get_tunable *t = + (struct ctdb_control_get_tunable *)indata.dptr; + char *name; + uint32_t val; + int i; + + if (indata.dsize < sizeof(*t) || + t->length > indata.dsize - offsetof(struct ctdb_control_get_tunable, name)) { + DEBUG(DEBUG_ERR,("Bad indata in ctdb_control_get_tunable\n")); + return -1; + } + + name = talloc_strndup(ctdb, (char*)t->name, t->length); + CTDB_NO_MEMORY(ctdb, name); + + for (i=0;i<ARRAY_SIZE(tunable_map);i++) { + if (strcasecmp(name, tunable_map[i].name) == 0) break; + } + talloc_free(name); + + if (i == ARRAY_SIZE(tunable_map)) { + return -EINVAL; + } + + val = *(uint32_t *)(tunable_map[i].offset + (uint8_t*)&ctdb->tunable); + + outdata->dptr = (uint8_t *)talloc(outdata, uint32_t); + CTDB_NO_MEMORY(ctdb, outdata->dptr); + + *(uint32_t *)outdata->dptr = val; + outdata->dsize = sizeof(uint32_t); + + return 0; +} + + +/* + set a tunable + */ +int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata) +{ + struct ctdb_control_set_tunable *t = + (struct ctdb_control_set_tunable *)indata.dptr; + char *name; + int i; + + if (indata.dsize < sizeof(*t) || + t->length > indata.dsize - offsetof(struct ctdb_control_set_tunable, name)) { + DEBUG(DEBUG_ERR,("Bad indata in ctdb_control_set_tunable\n")); + return -1; + } + + name = talloc_strndup(ctdb, (char *)t->name, t->length); + CTDB_NO_MEMORY(ctdb, name); + + for (i=0;i<ARRAY_SIZE(tunable_map);i++) { + if (strcasecmp(name, tunable_map[i].name) == 0) break; + } + + if (!strcmp(name, "VerifyRecoveryLock") && t->value != 0 + && ctdb->recovery_lock_file == NULL) { + DEBUG(DEBUG_ERR,("Can not activate tunable \"VerifyRecoveryLock\" since there is no recovery lock file set.\n")); + talloc_free(name); + return -1; + } + + talloc_free(name); + + if (i == ARRAY_SIZE(tunable_map)) { + return -1; + } + + *(uint32_t *)(tunable_map[i].offset + (uint8_t*)&ctdb->tunable) = t->value; + + return 0; +} + +/* + list tunables + */ +int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata) +{ + char *list = NULL; + int i; + struct ctdb_control_list_tunable *t; + + list = talloc_strdup(outdata, tunable_map[0].name); + CTDB_NO_MEMORY(ctdb, list); + + for (i=1;i<ARRAY_SIZE(tunable_map);i++) { + if (tunable_map[i].obsolete) { + continue; + } + list = talloc_asprintf_append(list, ":%s", tunable_map[i].name); + CTDB_NO_MEMORY(ctdb, list); + } + + outdata->dsize = offsetof(struct ctdb_control_list_tunable, data) + + strlen(list) + 1; + outdata->dptr = talloc_size(outdata, outdata->dsize); + CTDB_NO_MEMORY(ctdb, outdata->dptr); + + t = (struct ctdb_control_list_tunable *)outdata->dptr; + t->length = strlen(list)+1; + + memcpy(t->data, list, t->length); + talloc_free(list); + + return 0; +} |