1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/** 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);
}
/* 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 );
}
|
