Пример #1
0
static int
mdb_db_open( BackendDB *be, ConfigReply *cr )
{
	int rc, i;
	struct mdb_info *mdb = (struct mdb_info *) be->be_private;
	struct stat stat1;
	uint32_t flags;
	char *dbhome;
	MDB_txn *txn;

	if ( be->be_suffix == NULL ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": need suffix.\n",
			1, 0, 0 );
		return -1;
	}

	Debug( LDAP_DEBUG_ARGS,
		LDAP_XSTRING(mdb_db_open) ": \"%s\"\n",
		be->be_suffix[0].bv_val, 0, 0 );

	/* Check existence of dbenv_home. Any error means trouble */
	rc = stat( mdb->mi_dbenv_home, &stat1 );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"cannot access database directory \"%s\" (%d).\n",
			be->be_suffix[0].bv_val, mdb->mi_dbenv_home, errno );
		return -1;
	}

	/* mdb is always clean */
	be->be_flags |= SLAP_DBFLAG_CLEAN;

	rc = mdb_env_create( &mdb->mi_dbenv );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_create failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	if ( mdb->mi_readers ) {
		rc = mdb_env_set_maxreaders( mdb->mi_dbenv, mdb->mi_readers );
		if( rc != 0 ) {
			Debug( LDAP_DEBUG_ANY,
				LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
				"mdb_env_set_maxreaders failed: %s (%d).\n",
				be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
			goto fail;
		}
	}

	rc = mdb_env_set_mapsize( mdb->mi_dbenv, mdb->mi_mapsize );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_mapsize failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	rc = mdb_env_set_maxdbs( mdb->mi_dbenv, MDB_INDICES );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_maxdbs failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

#ifdef HAVE_EBCDIC
	strcpy( path, mdb->mi_dbenv_home );
	__atoe( path );
	dbhome = path;
#else
	dbhome = mdb->mi_dbenv_home;
#endif

	Debug( LDAP_DEBUG_TRACE,
		LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
		"dbenv_open(%s).\n",
		be->be_suffix[0].bv_val, mdb->mi_dbenv_home, 0);

	flags = mdb->mi_dbenv_flags;

	if ( slapMode & SLAP_TOOL_QUICK )
		flags |= MDB_NOSYNC|MDB_WRITEMAP;

	if ( slapMode & SLAP_TOOL_READONLY)
		flags |= MDB_RDONLY;

	rc = mdb_env_open( mdb->mi_dbenv, dbhome,
			flags, mdb->mi_dbenv_mode );

	if ( rc ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened: %s (%d). "
			"Restore from backup!\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	rc = mdb_txn_begin( mdb->mi_dbenv, NULL, flags & MDB_RDONLY, &txn );
	if ( rc ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened: %s (%d). "
			"Restore from backup!\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	/* open (and create) main databases */
	for( i = 0; mdmi_databases[i].bv_val; i++ ) {
		flags = MDB_INTEGERKEY;
		if( i == MDB_ID2ENTRY ) {
			if ( !(slapMode & (SLAP_TOOL_READMAIN|SLAP_TOOL_READONLY) ))
				flags |= MDB_CREATE;
		} else {
			if ( i == MDB_DN2ID )
				flags |= MDB_DUPSORT;
			if ( !(slapMode & SLAP_TOOL_READONLY) )
				flags |= MDB_CREATE;
		}

		rc = mdb_dbi_open( txn,
			mdmi_databases[i].bv_val,
			flags,
			&mdb->mi_dbis[i] );

		if ( rc != 0 ) {
			snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
				"mdb_dbi_open(%s/%s) failed: %s (%d).", 
				be->be_suffix[0].bv_val, 
				mdb->mi_dbenv_home, mdmi_databases[i].bv_val,
				mdb_strerror(rc), rc );
			Debug( LDAP_DEBUG_ANY,
				LDAP_XSTRING(mdb_db_open) ": %s\n",
				cr->msg, 0, 0 );
			goto fail;
		}

		if ( i == MDB_ID2ENTRY )
			mdb_set_compare( txn, mdb->mi_dbis[i], mdb_id_compare );
		else if ( i == MDB_DN2ID ) {
			MDB_cursor *mc;
			MDB_val key, data;
			ID id;
			mdb_set_dupsort( txn, mdb->mi_dbis[i], mdb_dup_compare );
			/* check for old dn2id format */
			rc = mdb_cursor_open( txn, mdb->mi_dbis[i], &mc );
			/* first record is always ID 0 */
			rc = mdb_cursor_get( mc, &key, &data, MDB_FIRST );
			if ( rc == 0 ) {
				rc = mdb_cursor_get( mc, &key, &data, MDB_NEXT );
				if ( rc == 0 ) {
					int len;
					unsigned char *ptr;
					ptr = data.mv_data;
					len = (ptr[0] & 0x7f) << 8 | ptr[1];
					if (data.mv_size < 2*len + 4 + 2*sizeof(ID)) {
						snprintf( cr->msg, sizeof(cr->msg),
						"database \"%s\": DN index needs upgrade, "
						"run \"slapindex entryDN\".",
						be->be_suffix[0].bv_val );
						Debug( LDAP_DEBUG_ANY,
							LDAP_XSTRING(mdb_db_open) ": %s\n",
							cr->msg, 0, 0 );
						if ( !(slapMode & SLAP_TOOL_READMAIN ))
							rc = LDAP_OTHER;
						mdb->mi_flags |= MDB_NEED_UPGRADE;
					}
				}
			}
			mdb_cursor_close( mc );
			if ( rc == LDAP_OTHER )
				goto fail;
		}
	}

	rc = mdb_ad_read( mdb, txn );
	if ( rc ) {
		mdb_txn_abort( txn );
		goto fail;
	}

	/* slapcat doesn't need indexes. avoid a failure if
	 * a configured index wasn't created yet.
	 */
	if ( !(slapMode & SLAP_TOOL_READONLY) ) {
		rc = mdb_attr_dbs_open( be, txn, cr );
		if ( rc ) {
			mdb_txn_abort( txn );
			goto fail;
		}
	}

	rc = mdb_txn_commit(txn);
	if ( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database %s: "
			"txn_commit failed: %s (%d)\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	/* monitor setup */
	rc = mdb_monitor_db_open( be );
	if ( rc != 0 ) {
		goto fail;
	}

	mdb->mi_flags |= MDB_IS_OPEN;

	return 0;

fail:
	mdb_db_close( be, NULL );
	return rc;
}
Пример #2
0
static int
mdb_db_open( BackendDB *be, ConfigReply *cr )
{
	int rc, i;
	struct mdb_info *mdb = (struct mdb_info *) be->be_private;
	struct stat stat1;
	uint32_t flags;
	char *dbhome;
	MDB_txn *txn;

	if ( be->be_suffix == NULL ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": need suffix.\n" );
		return -1;
	}

	Debug( LDAP_DEBUG_ARGS,
		LDAP_XSTRING(mdb_db_open) ": \"%s\"\n",
		be->be_suffix[0].bv_val );

	/* Check existence of dbenv_home. Any error means trouble */
	rc = stat( mdb->mi_dbenv_home, &stat1 );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"cannot access database directory \"%s\" (%d).\n",
			be->be_suffix[0].bv_val, mdb->mi_dbenv_home, errno );
		return -1;
	}

	/* mdb is always clean */
	be->be_flags |= SLAP_DBFLAG_CLEAN;

	rc = mdb_env_create( &mdb->mi_dbenv );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_create failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	mdb_env_set_userctx(mdb->mi_dbenv, mdb);

	if ( mdb->mi_readers ) {
		rc = mdb_env_set_maxreaders( mdb->mi_dbenv, mdb->mi_readers );
		if( rc != 0 ) {
			Debug( LDAP_DEBUG_ANY,
				LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
				"mdb_env_set_maxreaders failed: %s (%d).\n",
				be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
			goto fail;
		}
	}

	rc = mdb_env_set_mapsize( mdb->mi_dbenv, mdb->mi_mapsize );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_mapsize failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	rc = mdb_env_set_maxdbs( mdb->mi_dbenv, MDB_INDICES );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_maxdbs failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

#ifdef MDBX_LIFORECLAIM
#if MDBX_MODE_ENABLED
	rc = mdbx_env_set_syncbytes( mdb->mi_dbenv, mdb->mi_txn_cp_kbyte * 1024ul);
#else
	rc = mdb_env_set_syncbytes( mdb->mi_dbenv, mdb->mi_txn_cp_kbyte * 1024ul);
#endif /* MDBX_MODE_ENABLED */
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_sync_threshold failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

#if MDBX_MODE_ENABLED
	mdbx_env_set_oomfunc( mdb->mi_dbenv, mdb_oom_handler );
#else
	mdb_env_set_oomfunc( mdb->mi_dbenv, mdb_oom_handler );
#endif /* MDBX_MODE_ENABLED */

	if ( (slapMode & SLAP_SERVER_MODE) && SLAP_MULTIMASTER(be) &&
			((MDBX_OOM_YIELD & mdb->mi_oom_flags) == 0 || mdb->mi_renew_lag == 0)) {
		snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
			"for properly operation in multi-master mode"
			" 'oom-handler yield' and 'dreamcatcher' are recommended",
			be->be_suffix[0].bv_val );
		Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(mdb_db_open) ": %s\n", cr->msg );
	}
#endif /* MDBX_LIFORECLAIM */

	dbhome = mdb->mi_dbenv_home;

	Debug( LDAP_DEBUG_TRACE,
		LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
		"dbenv_open(%s).\n",
		be->be_suffix[0].bv_val, mdb->mi_dbenv_home);

	flags = mdb->mi_dbenv_flags;

#ifdef MDBX_PAGEPERTURB
	if (reopenldap_mode_check())
		flags |= MDBX_PAGEPERTURB;
#endif

	if ( slapMode & SLAP_TOOL_QUICK )
		flags |= MDB_NOSYNC|MDB_WRITEMAP;

	if ( slapMode & SLAP_TOOL_READONLY)
		flags |= MDB_RDONLY;

	rc = mdb_env_open( mdb->mi_dbenv, dbhome,
			flags, mdb->mi_dbenv_mode );

	if ( rc ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened: %s (%d). "
			"Restore from backup!\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	rc = mdb_txn_begin( mdb->mi_dbenv, NULL, flags & MDB_RDONLY, &txn );
	if ( rc ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened: %s (%d). "
			"Restore from backup!\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	/* open (and create) main databases */
	for( i = 0; mdmi_databases[i].bv_val; i++ ) {
		flags = MDB_INTEGERKEY;
		if( i == MDB_ID2ENTRY ) {
			if ( !(slapMode & (SLAP_TOOL_READMAIN|SLAP_TOOL_READONLY) ))
				flags |= MDB_CREATE;
		} else {
			if ( i == MDB_DN2ID )
				flags |= MDB_DUPSORT;
			if ( !(slapMode & SLAP_TOOL_READONLY) )
				flags |= MDB_CREATE;
		}

		rc = mdb_dbi_open( txn,
			mdmi_databases[i].bv_val,
			flags,
			&mdb->mi_dbis[i] );

		if ( rc != 0 ) {
			snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
				"mdb_dbi_open(%s/%s) failed: %s (%d).",
				be->be_suffix[0].bv_val,
				mdb->mi_dbenv_home, mdmi_databases[i].bv_val,
				mdb_strerror(rc), rc );
			Debug( LDAP_DEBUG_ANY,
				LDAP_XSTRING(mdb_db_open) ": %s\n",
				cr->msg );
			goto fail;
		}

		if ( i == MDB_ID2ENTRY )
			mdb_set_compare( txn, mdb->mi_dbis[i], mdb_id_compare );
		else if ( i == MDB_DN2ID ) {
			MDB_cursor *mc;
			MDB_val key, data;
			mdb_set_dupsort( txn, mdb->mi_dbis[i], mdb_dup_compare );
			/* check for old dn2id format */
			rc = mdb_cursor_open( txn, mdb->mi_dbis[i], &mc );
			/* first record is always ID 0 */
			rc = mdb_cursor_get( mc, &key, &data, MDB_FIRST );
			if ( rc == 0 ) {
				rc = mdb_cursor_get( mc, &key, &data, MDB_NEXT );
				if ( rc == 0 ) {
					int len;
					unsigned char *ptr;
					ptr = data.mv_data;
					len = (ptr[0] & 0x7f) << 8 | ptr[1];
					if (data.mv_size < 2*len + 4 + 2*sizeof(ID)) {
						snprintf( cr->msg, sizeof(cr->msg),
						"database \"%s\": DN index needs upgrade, "
						"run \"slapindex entryDN\".",
						be->be_suffix[0].bv_val );
						Debug( LDAP_DEBUG_ANY,
							LDAP_XSTRING(mdb_db_open) ": %s\n",
							cr->msg );
						if ( !(slapMode & SLAP_TOOL_READMAIN ))
							rc = LDAP_OTHER;
						mdb->mi_flags |= MDB_NEED_UPGRADE;
					}
				}
			}
			mdb_cursor_close( mc );
			if ( rc == LDAP_OTHER )
				goto fail;
		}
	}

	rc = mdb_ad_read( mdb, txn );
	if ( rc ) {
		mdb_txn_abort( txn );
		goto fail;
	}

	/* slapcat doesn't need indexes. avoid a failure if
	 * a configured index wasn't created yet.
	 */
	if ( !(slapMode & SLAP_TOOL_READONLY) ) {
		rc = mdb_attr_dbs_open( be, txn, cr );
		if ( rc ) {
			mdb_txn_abort( txn );
			goto fail;
		}
	}

	rc = mdb_txn_commit(txn);
	if ( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database %s: "
			"txn_commit failed: %s (%d)\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	/* monitor setup */
	rc = mdb_monitor_db_open( be );
	if ( rc != 0 ) {
		goto fail;
	}

	mdb->mi_flags |= MDB_IS_OPEN;

	return 0;

fail:
	mdb_db_close( be, NULL );
	return rc;
}
Пример #3
0
static int
mdb_db_open( BackendDB *be, ConfigReply *cr )
{
	int rc, i;
	struct mdb_info *mdb = (struct mdb_info *) be->be_private;
	struct stat stat1;
	uint32_t flags;
	char *dbhome;
	MDB_txn *txn;

	if ( be->be_suffix == NULL ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": need suffix.\n",
			1, 0, 0 );
		return -1;
	}

	Debug( LDAP_DEBUG_ARGS,
		LDAP_XSTRING(mdb_db_open) ": \"%s\"\n",
		be->be_suffix[0].bv_val, 0, 0 );

	/* Check existence of dbenv_home. Any error means trouble */
	rc = stat( mdb->mi_dbenv_home, &stat1 );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"cannot access database directory \"%s\" (%d).\n",
			be->be_suffix[0].bv_val, mdb->mi_dbenv_home, errno );
		return -1;
	}

	/* mdb is always clean */
	be->be_flags |= SLAP_DBFLAG_CLEAN;

	rc = mdb_env_create( &mdb->mi_dbenv );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_create failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	if ( mdb->mi_readers ) {
		rc = mdb_env_set_maxreaders( mdb->mi_dbenv, mdb->mi_readers );
		if( rc != 0 ) {
			Debug( LDAP_DEBUG_ANY,
				LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
				"mdb_env_set_maxreaders failed: %s (%d).\n",
				be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
			goto fail;
		}
	}

	rc = mdb_env_set_mapsize( mdb->mi_dbenv, mdb->mi_mapsize );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_mapsize failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

	rc = mdb_env_set_maxdbs( mdb->mi_dbenv, MDB_INDICES );
	if( rc != 0 ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
			"mdb_env_set_maxdbs failed: %s (%d).\n",
			be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
		goto fail;
	}

#ifdef HAVE_EBCDIC
	strcpy( path, mdb->mi_dbenv_home );
	__atoe( path );
	dbhome = path;
#else
	dbhome = mdb->mi_dbenv_home;
#endif

	Debug( LDAP_DEBUG_TRACE,
		LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
		"dbenv_open(%s).\n",
		be->be_suffix[0].bv_val, mdb->mi_dbenv_home, 0);

	flags = mdb->mi_dbenv_flags;

	if ( slapMode & SLAP_TOOL_QUICK )
		flags |= MDB_NOSYNC;

	if ( slapMode & SLAP_TOOL_READONLY)
		flags |= MDB_RDONLY;

	rc = mdb_env_open( mdb->mi_dbenv, dbhome,
			flags, mdb->mi_dbenv_mode );

	if ( rc ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened, err %d. "
			"Restore from backup!\n",
			be->be_suffix[0].bv_val, rc, 0 );
		goto fail;
	}

	rc = mdb_txn_begin( mdb->mi_dbenv, NULL, 0, &txn );
	if ( rc ) {
		Debug( LDAP_DEBUG_ANY,
			LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened, err %d. "
			"Restore from backup!\n",
			be->be_suffix[0].bv_val, rc, 0 );
		goto fail;
	}

	/* open (and create) main databases */
	for( i = 0; mdmi_databases[i].bv_val; i++ ) {
		flags = MDB_INTEGERKEY;
		if( i == MDB_ID2ENTRY ) {
			if ( !(slapMode & (SLAP_TOOL_READMAIN|SLAP_TOOL_READONLY) ))
				flags |= MDB_CREATE;
		} else {
			if ( i == MDB_DN2ID )
				flags |= MDB_DUPSORT;
			if ( !(slapMode & SLAP_TOOL_READONLY) )
				flags |= MDB_CREATE;
		}

		rc = mdb_open( txn,
			mdmi_databases[i].bv_val,
			flags,
			&mdb->mi_dbis[i] );

		if ( rc != 0 ) {
			snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
				"mdb_open(%s/%s) failed: %s (%d).", 
				be->be_suffix[0].bv_val, 
				mdb->mi_dbenv_home, mdmi_databases[i].bv_val,
				mdb_strerror(rc), rc );
			Debug( LDAP_DEBUG_ANY,
				LDAP_XSTRING(mdb_db_open) ": %s\n",
				cr->msg, 0, 0 );
			goto fail;
		}

		if ( i == MDB_ID2ENTRY )
			mdb_set_compare( txn, mdb->mi_dbis[i], mdb_id_compare );
		else if ( i == MDB_DN2ID )
			mdb_set_dupsort( txn, mdb->mi_dbis[i], mdb_dup_compare );

	}

	rc = mdb_ad_read( mdb, txn );
	if ( rc ) {
		mdb_txn_abort( txn );
		goto fail;
	}

	rc = mdb_attr_dbs_open( be, txn, cr );
	if ( rc ) {
		mdb_txn_abort( txn );
		goto fail;
	}

	rc = mdb_txn_commit(txn);
	if ( rc != 0 ) {
		goto fail;
	}

	/* monitor setup */
	rc = mdb_monitor_db_open( be );
	if ( rc != 0 ) {
		goto fail;
	}

	mdb->mi_flags |= MDB_IS_OPEN;

	return 0;

fail:
	mdb_db_close( be, NULL );
	return rc;
}