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/** BEGIN COPYRIGHT BLOCK
* 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; version 2 of the License.
*
* 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, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/*
* start.c
*/
#include "back-ldbm.h"
/*
* Start the LDBM plugin, and all its instances.
*/
int
ldbm_back_start( Slapi_PBlock *pb )
{
struct ldbminfo *li;
static int initialized = 0;
char *home_dir;
int action;
int retval;
LDAPDebug( LDAP_DEBUG_TRACE, "ldbm backend starting\n", 0, 0, 0 );
slapi_pblock_get( pb, SLAPI_PLUGIN_PRIVATE, &li );
/* parse the config file here */
if (0 != ldbm_config_load_dse_info(li)) {
LDAPDebug( LDAP_DEBUG_ANY, "start: Loading database configuration failed\n",
0, 0, 0 );
return SLAPI_FAIL_GENERAL;
}
/* register with the binder-based resource limit subsystem so that */
/* lookthroughlimit can be supported on a per-connection basis. */
if ( slapi_reslimit_register( SLAPI_RESLIMIT_TYPE_INT,
LDBM_LOOKTHROUGHLIMIT_AT, &li->li_reslimit_lookthrough_handle )
!= SLAPI_RESLIMIT_STATUS_SUCCESS ) {
LDAPDebug( LDAP_DEBUG_ANY, "start: Resource limit registration failed\n",
0, 0, 0 );
return SLAPI_FAIL_GENERAL;
}
/* If the db directory hasn't been set yet, we need to set it to
* the default. */
if (NULL == li->li_directory || '\0' == li->li_directory[0]) {
/* "get default" is a special string that tells the config
* routines to figure out the default db directory by
* reading cn=config. */
ldbm_config_internal_set(li, CONFIG_DIRECTORY, "get default");
}
/* sanity check the autosizing values,
no value or sum of values larger than 100.
*/
if ( (li->li_cache_autosize > 100) ||
(li->li_cache_autosize_split > 100) ||
(li->li_import_cache_autosize > 100) ||
((li->li_cache_autosize > 0) && (li->li_import_cache_autosize > 0) &&
(li->li_cache_autosize + li->li_import_cache_autosize > 100)) )
{
LDAPDebug( LDAP_DEBUG_ANY, "cache autosizing: bad settings, "
"value or sum of values can not larger than 100.\n", 0, 0, 0 );
} else
/* if cache autosize was selected, select the cache sizes now */
if ((li->li_cache_autosize > 0) || (li->li_import_cache_autosize > 0)) {
size_t pagesize, pages, procpages, availpages;
dblayer_sys_pages(&pagesize, &pages, &procpages, &availpages);
if (pagesize) {
char s[32]; /* big enough to hold %ld */
unsigned long cache_size_to_configure = 0;
int zone_pages, db_pages, entry_pages, import_pages;
Object *inst_obj;
ldbm_instance *inst;
/* autosizing dbCache and entryCache */
if (li->li_cache_autosize > 0) {
zone_pages = (li->li_cache_autosize * pages) / 100;
/* now split it according to user prefs */
db_pages = (li->li_cache_autosize_split * zone_pages) / 100;
/* fudge an extra instance into our calculations... */
entry_pages = (zone_pages - db_pages) /
(objset_size(li->li_instance_set) + 1);
LDAPDebug(LDAP_DEBUG_ANY, "cache autosizing. found %dk physical memory\n",
pages*(pagesize/1024), 0, 0);
LDAPDebug(LDAP_DEBUG_ANY, "cache autosizing: db cache: %dk, "
"each entry cache (%d total): %dk\n",
db_pages*(pagesize/1024), objset_size(li->li_instance_set),
entry_pages*(pagesize/1024));
/* libdb allocates 1.25x the amount we tell it to, but only for values < 500Meg */
if (cache_size_to_configure < (500 * MEGABYTE)) {
cache_size_to_configure = (unsigned long)((db_pages * pagesize) / 1.25);
} else {
cache_size_to_configure = (unsigned long)(db_pages * pagesize);
}
sprintf(s, "%lu", cache_size_to_configure);
ldbm_config_internal_set(li, CONFIG_DBCACHESIZE, s);
li->li_cache_autosize_ec = (unsigned long)entry_pages * pagesize;
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
cache_set_max_entries(&(inst->inst_cache), -1);
cache_set_max_size(&(inst->inst_cache),
li->li_cache_autosize_ec, CACHE_TYPE_ENTRY);
}
}
/* autosizing importCache */
if (li->li_import_cache_autosize > 0) {
/* For some reason, -1 means 50 ... */
if (li->li_import_cache_autosize == -1) {
li->li_import_cache_autosize = 50;
}
import_pages = (li->li_import_cache_autosize * pages) / 100;
LDAPDebug(LDAP_DEBUG_ANY, "cache autosizing: import cache: %dk \n",
import_pages*(pagesize/1024), NULL, NULL);
sprintf(s, "%lu", (unsigned long)(import_pages * pagesize));
ldbm_config_internal_set(li, CONFIG_IMPORT_CACHESIZE, s);
}
}
}
retval = check_db_version(li, &action);
if (0 != retval)
{
LDAPDebug( LDAP_DEBUG_ANY, "start: db version is not supported\n",
0, 0, 0);
return SLAPI_FAIL_GENERAL;
}
if (action & (DBVERSION_UPGRADE_3_4|DBVERSION_UPGRADE_4_4))
{
retval = dblayer_start(li,DBLAYER_CLEAN_RECOVER_MODE);
}
else
{
retval = dblayer_start(li,DBLAYER_NORMAL_MODE);
}
if (0 != retval) {
char *msg;
LDAPDebug( LDAP_DEBUG_ANY, "start: Failed to init database, err=%d %s\n",
retval, (msg = dblayer_strerror( retval )) ? msg : "", 0 );
if (LDBM_OS_ERR_IS_DISKFULL(retval)) return return_on_disk_full(li);
else return SLAPI_FAIL_GENERAL;
}
/* Walk down the instance list, starting all the instances. */
retval = ldbm_instance_startall(li);
if (0 != retval) {
char *msg;
LDAPDebug( LDAP_DEBUG_ANY, "start: Failed to start databases, err=%d %s\n",
retval, (msg = dblayer_strerror( retval )) ? msg : "", 0 );
if (LDBM_OS_ERR_IS_DISKFULL(retval)) return return_on_disk_full(li);
else {
if ((li->li_cache_autosize > 0) && (li->li_cache_autosize <= 100)) {
LDAPDebug( LDAP_DEBUG_ANY, "Failed to allocate %d byte dbcache. "
"Please reduce the value of %s and restart the server.\n",
li->li_dbcachesize, CONFIG_CACHE_AUTOSIZE, 0);
}
return SLAPI_FAIL_GENERAL;
}
}
/* write DBVERSION file if one does not exist */
home_dir = dblayer_get_home_dir(li, NULL);
if (!dbversion_exists(li, home_dir))
{
dbversion_write (li, home_dir, NULL, DBVERSION_ALL);
}
/* this function is called every time new db is initialized */
/* currently it is called the 2nd time when changelog db is */
/* dynamically created. Code below should only be called once */
if (!initialized)
{
ldbm_compute_init();
initialized = 1;
}
/* initialize the USN counter */
ldbm_usn_init(li);
LDAPDebug( LDAP_DEBUG_TRACE, "ldbm backend done starting\n", 0, 0, 0 );
return( 0 );
}
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