mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
d0739b2ea8
Defaulting to host public IP addresses when all nodes are unhealthy does not obey the principle of least surprise. It has caused much confusion over the years. It often leads to problems when all nodes are unhealthy due to something like a cluster filesystem being unmounted. Change the default value for this tunable as the first step of completely removing this behaviour. Remove tests that set NoIPHostOnAllDisabled=1 and update the expected result for other tests where no nodes are healthy. Signed-off-by: Martin Schwenke <martin@meltin.net> Reviewed-by: Amitay Isaacs <amitay@gmail.com>
283 lines
9.0 KiB
C
283 lines
9.0 KiB
C
/*
|
|
Tunables utilities
|
|
|
|
Copyright (C) Amitay Isaacs 2016
|
|
|
|
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 "replace.h"
|
|
#include "system/locale.h"
|
|
#include "system/network.h"
|
|
|
|
#include <talloc.h>
|
|
|
|
#include "protocol/protocol.h"
|
|
|
|
#include "common/tunable.h"
|
|
|
|
static struct {
|
|
const char *label;
|
|
uint32_t value;
|
|
bool obsolete;
|
|
size_t offset;
|
|
} tunable_map[] = {
|
|
{ "MaxRedirectCount", 3, true,
|
|
offsetof(struct ctdb_tunable_list, max_redirect_count) },
|
|
{ "SeqnumInterval", 1000, false,
|
|
offsetof(struct ctdb_tunable_list, seqnum_interval) },
|
|
{ "ControlTimeout", 60, false,
|
|
offsetof(struct ctdb_tunable_list, control_timeout) },
|
|
{ "TraverseTimeout", 20, false,
|
|
offsetof(struct ctdb_tunable_list, traverse_timeout) },
|
|
{ "KeepaliveInterval", 5, false,
|
|
offsetof(struct ctdb_tunable_list, keepalive_interval) },
|
|
{ "KeepaliveLimit", 5, false,
|
|
offsetof(struct ctdb_tunable_list, keepalive_limit) },
|
|
{ "RecoverTimeout", 30, false,
|
|
offsetof(struct ctdb_tunable_list, recover_timeout) },
|
|
{ "RecoverInterval", 1, false,
|
|
offsetof(struct ctdb_tunable_list, recover_interval) },
|
|
{ "ElectionTimeout", 3, false,
|
|
offsetof(struct ctdb_tunable_list, election_timeout) },
|
|
{ "TakeoverTimeout", 9, false,
|
|
offsetof(struct ctdb_tunable_list, takeover_timeout) },
|
|
{ "MonitorInterval", 15, false,
|
|
offsetof(struct ctdb_tunable_list, monitor_interval) },
|
|
{ "TickleUpdateInterval", 20, false,
|
|
offsetof(struct ctdb_tunable_list, tickle_update_interval) },
|
|
{ "EventScriptTimeout", 30, false,
|
|
offsetof(struct ctdb_tunable_list, script_timeout) },
|
|
{ "MonitorTimeoutCount", 20, false,
|
|
offsetof(struct ctdb_tunable_list, monitor_timeout_count) },
|
|
{ "EventScriptUnhealthyOnTimeout", 0, true,
|
|
offsetof(struct ctdb_tunable_list, script_unhealthy_on_timeout) },
|
|
{ "RecoveryGracePeriod", 120, false,
|
|
offsetof(struct ctdb_tunable_list, recovery_grace_period) },
|
|
{ "RecoveryBanPeriod", 300, false,
|
|
offsetof(struct ctdb_tunable_list, recovery_ban_period) },
|
|
{ "DatabaseHashSize", 100001, false,
|
|
offsetof(struct ctdb_tunable_list, database_hash_size) },
|
|
{ "DatabaseMaxDead", 5, false,
|
|
offsetof(struct ctdb_tunable_list, database_max_dead) },
|
|
{ "RerecoveryTimeout", 10, false,
|
|
offsetof(struct ctdb_tunable_list, rerecovery_timeout) },
|
|
{ "EnableBans", 1, false,
|
|
offsetof(struct ctdb_tunable_list, enable_bans) },
|
|
{ "DeterministicIPs", 0, true,
|
|
offsetof(struct ctdb_tunable_list, deterministic_public_ips) },
|
|
{ "LCP2PublicIPs", 1, true,
|
|
offsetof(struct ctdb_tunable_list, lcp2_public_ip_assignment) },
|
|
{ "ReclockPingPeriod", 60, true,
|
|
offsetof(struct ctdb_tunable_list, reclock_ping_period) },
|
|
{ "NoIPFailback", 0, false,
|
|
offsetof(struct ctdb_tunable_list, no_ip_failback) },
|
|
{ "DisableIPFailover", 0, false,
|
|
offsetof(struct ctdb_tunable_list, disable_ip_failover) },
|
|
{ "VerboseMemoryNames", 0, false,
|
|
offsetof(struct ctdb_tunable_list, verbose_memory_names) },
|
|
{ "RecdPingTimeout", 60, false,
|
|
offsetof(struct ctdb_tunable_list, recd_ping_timeout) },
|
|
{ "RecdFailCount", 10, false,
|
|
offsetof(struct ctdb_tunable_list, recd_ping_failcount) },
|
|
{ "LogLatencyMs", 0, false,
|
|
offsetof(struct ctdb_tunable_list, log_latency_ms) },
|
|
{ "RecLockLatencyMs", 1000, false,
|
|
offsetof(struct ctdb_tunable_list, reclock_latency_ms) },
|
|
{ "RecoveryDropAllIPs", 120, false,
|
|
offsetof(struct ctdb_tunable_list, recovery_drop_all_ips) },
|
|
{ "VerifyRecoveryLock", 1, true,
|
|
offsetof(struct ctdb_tunable_list, verify_recovery_lock) },
|
|
{ "VacuumInterval", 10, false,
|
|
offsetof(struct ctdb_tunable_list, vacuum_interval) },
|
|
{ "VacuumMaxRunTime", 120, false,
|
|
offsetof(struct ctdb_tunable_list, vacuum_max_run_time) },
|
|
{ "RepackLimit", 10*1000, false,
|
|
offsetof(struct ctdb_tunable_list, repack_limit) },
|
|
{ "VacuumLimit", 5*1000, false,
|
|
offsetof(struct ctdb_tunable_list, vacuum_limit) },
|
|
{ "VacuumFastPathCount", 60, false,
|
|
offsetof(struct ctdb_tunable_list, vacuum_fast_path_count) },
|
|
{ "MaxQueueDropMsg", 1000*1000, false,
|
|
offsetof(struct ctdb_tunable_list, max_queue_depth_drop_msg) },
|
|
{ "AllowUnhealthyDBRead", 0, false,
|
|
offsetof(struct ctdb_tunable_list, allow_unhealthy_db_read) },
|
|
{ "StatHistoryInterval", 1, false,
|
|
offsetof(struct ctdb_tunable_list, stat_history_interval) },
|
|
{ "DeferredAttachTO", 120, false,
|
|
offsetof(struct ctdb_tunable_list, deferred_attach_timeout) },
|
|
{ "AllowClientDBAttach", 1, false,
|
|
offsetof(struct ctdb_tunable_list, allow_client_db_attach) },
|
|
{ "RecoverPDBBySeqNum", 1, true,
|
|
offsetof(struct ctdb_tunable_list, recover_pdb_by_seqnum) },
|
|
{ "DeferredRebalanceOnNodeAdd", 300, true,
|
|
offsetof(struct ctdb_tunable_list, deferred_rebalance_on_node_add) },
|
|
{ "FetchCollapse", 1, false,
|
|
offsetof(struct ctdb_tunable_list, fetch_collapse) },
|
|
{ "HopcountMakeSticky", 50, false,
|
|
offsetof(struct ctdb_tunable_list, hopcount_make_sticky) },
|
|
{ "StickyDuration", 600, false,
|
|
offsetof(struct ctdb_tunable_list, sticky_duration) },
|
|
{ "StickyPindown", 200, false,
|
|
offsetof(struct ctdb_tunable_list, sticky_pindown) },
|
|
{ "NoIPTakeover", 0, false,
|
|
offsetof(struct ctdb_tunable_list, no_ip_takeover) },
|
|
{ "DBRecordCountWarn", 100*1000, false,
|
|
offsetof(struct ctdb_tunable_list, db_record_count_warn) },
|
|
{ "DBRecordSizeWarn", 10*1000*1000, false,
|
|
offsetof(struct ctdb_tunable_list, db_record_size_warn) },
|
|
{ "DBSizeWarn", 100*1000*1000, false,
|
|
offsetof(struct ctdb_tunable_list, db_size_warn) },
|
|
{ "PullDBPreallocation", 10*1024*1024, false,
|
|
offsetof(struct ctdb_tunable_list, pulldb_preallocation_size) },
|
|
{ "NoIPHostOnAllDisabled", 1, false,
|
|
offsetof(struct ctdb_tunable_list, no_ip_host_on_all_disabled) },
|
|
{ "Samba3AvoidDeadlocks", 0, true,
|
|
offsetof(struct ctdb_tunable_list, samba3_hack) },
|
|
{ "TDBMutexEnabled", 1, false,
|
|
offsetof(struct ctdb_tunable_list, mutex_enabled) },
|
|
{ "LockProcessesPerDB", 200, false,
|
|
offsetof(struct ctdb_tunable_list, lock_processes_per_db) },
|
|
{ "RecBufferSizeLimit", 1000*1000, false,
|
|
offsetof(struct ctdb_tunable_list, rec_buffer_size_limit) },
|
|
{ "QueueBufferSize", 1024, false,
|
|
offsetof(struct ctdb_tunable_list, queue_buffer_size) },
|
|
{ "IPAllocAlgorithm", 2, false,
|
|
offsetof(struct ctdb_tunable_list, ip_alloc_algorithm) },
|
|
{ "AllowMixedVersions", 0, false,
|
|
offsetof(struct ctdb_tunable_list, allow_mixed_versions) },
|
|
{ NULL, 0, true, }
|
|
};
|
|
|
|
void ctdb_tunable_set_defaults(struct ctdb_tunable_list *tun_list)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; tunable_map[i].label != NULL; i++) {
|
|
size_t offset = tunable_map[i].offset;
|
|
uint32_t value = tunable_map[i].value;
|
|
uint32_t *value_ptr;
|
|
|
|
value_ptr = (uint32_t *)((uint8_t *)tun_list + offset);
|
|
*value_ptr = value;
|
|
}
|
|
}
|
|
|
|
bool ctdb_tunable_get_value(struct ctdb_tunable_list *tun_list,
|
|
const char *tunable_str, uint32_t *value)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; tunable_map[i].label != NULL; i++) {
|
|
if (strcasecmp(tunable_map[i].label, tunable_str) == 0) {
|
|
uint32_t *value_ptr;
|
|
|
|
value_ptr = (uint32_t *)((uint8_t *)tun_list +
|
|
tunable_map[i].offset);
|
|
*value = *value_ptr;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ctdb_tunable_set_value(struct ctdb_tunable_list *tun_list,
|
|
const char *tunable_str, uint32_t value,
|
|
bool *obsolete)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; tunable_map[i].label != NULL; i++) {
|
|
if (strcasecmp(tunable_map[i].label, tunable_str) == 0) {
|
|
uint32_t *value_ptr;
|
|
|
|
value_ptr = (uint32_t *)((uint8_t *)tun_list +
|
|
tunable_map[i].offset);
|
|
*value_ptr = value;
|
|
if (obsolete != NULL) {
|
|
*obsolete = tunable_map[i].obsolete;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
struct ctdb_var_list *ctdb_tunable_names(TALLOC_CTX *mem_ctx)
|
|
{
|
|
struct ctdb_var_list *list;
|
|
int i;
|
|
|
|
list = talloc_zero(mem_ctx, struct ctdb_var_list);
|
|
if (list == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
for (i=0; tunable_map[i].label != NULL; i++) {
|
|
if (tunable_map[i].obsolete) {
|
|
continue;
|
|
}
|
|
|
|
list->var = talloc_realloc(list, list->var, const char *,
|
|
list->count + 1);
|
|
if (list->var == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
list->var[list->count] = talloc_strdup(list,
|
|
tunable_map[i].label);
|
|
if (list->var[list->count] == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
list->count += 1;
|
|
}
|
|
|
|
return list;
|
|
|
|
fail:
|
|
TALLOC_FREE(list);
|
|
return NULL;
|
|
}
|
|
|
|
char *ctdb_tunable_names_to_string(TALLOC_CTX *mem_ctx)
|
|
{
|
|
char *str = NULL;
|
|
int i;
|
|
|
|
str = talloc_strdup(mem_ctx, ":");
|
|
if (str == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
for (i=0; tunable_map[i].label != NULL; i++) {
|
|
if (tunable_map[i].obsolete) {
|
|
continue;
|
|
}
|
|
|
|
str = talloc_asprintf_append(str, "%s:",
|
|
tunable_map[i].label);
|
|
if (str == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* Remove the last ':' */
|
|
str[strlen(str)-1] = '\0';
|
|
|
|
return str;
|
|
}
|