From f8230b451c51d6f5aed23960dc8438b569f50c30 Mon Sep 17 00:00:00 2001 From: Mark Reynolds Date: Mon, 15 May 2017 13:30:22 -0400 Subject: [PATCH] Ticket 49257 - Reject dbcachesize updates while auto cache sizing is enabled Description: We should reject updates to nsslapd-dbcachesize while auto cache sizing is in effect. This is because at startup we would overwrite the manually set dbcache size anyway. It would never take effect, so it should be rejected. https://pagure.io/389-ds-base/issue/49257 Reviewed by: ? --- ldap/servers/slapd/back-ldbm/ldbm_config.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/ldap/servers/slapd/back-ldbm/ldbm_config.c b/ldap/servers/slapd/back-ldbm/ldbm_config.c index 008e8aa..33012e8 100644 --- a/ldap/servers/slapd/back-ldbm/ldbm_config.c +++ b/ldap/servers/slapd/back-ldbm/ldbm_config.c @@ -420,7 +420,7 @@ static int ldbm_config_dbcachesize_set(void *arg, void *value, char *errorbuf, i /* Stop the user configuring a stupidly small cache */ /* min: 8KB (page size) * def thrd cnts (threadnumber==20). */ #define DBDEFMINSIZ 500000 - /* We allow a value of 0, because the autotuting in start.c will + /* We allow a value of 0, because the autotuning in start.c will * register that, and trigger the recalculation of the dbcachesize as * needed on the next start up. */ @@ -443,7 +443,18 @@ static int ldbm_config_dbcachesize_set(void *arg, void *value, char *errorbuf, i return LDAP_UNWILLING_TO_PERFORM; } } + if (CONFIG_PHASE_RUNNING == phase) { + if (val > 0 && li->li_cache_autosize) { + /* We are auto-tuning the cache, so this change would be overwritten - return an error */ + slapi_create_errormsg(errorbuf, SLAPI_DSE_RETURNTEXT_SIZE, + "Error: \"nsslapd-dbcachesize\" can not be updated while \"nsslapd-cache-autosize\" is set " + "in \"cn=config,cn=ldbm database,cn=plugins,cn=config\"."); + slapi_log_err(SLAPI_LOG_ERR, "ldbm_config_dbcachesize_set", + "\"nsslapd-dbcachesize\" can not be set while \"nsslapd-cache-autosize\" is set " + "in \"cn=config,cn=ldbm database,cn=plugins,cn=config\".\n"); + return LDAP_UNWILLING_TO_PERFORM; + } li->li_new_dbcachesize = val; if (val == 0) { slapi_log_err(SLAPI_LOG_NOTICE, "ldbm_config_dbcachesize_set", "cache size reset to 0, will be autosized on next startup.\n"); -- 2.9.3