diff --git a/bdb/db/db_open.c b/bdb/db/db_open.c
index f6f96cda547..8352525361f 100644
--- a/bdb/db/db_open.c
+++ b/bdb/db/db_open.c
@@ -536,11 +536,9 @@ swap_retry:
 	 * and even a checksum error isn't a reason to panic the environment.
 	 */
 	if ((ret = __db_chk_meta(dbenv, dbp, meta, do_metachk)) != 0) {
-		if (ret == -1) {
+		if (ret == -1)
 			__db_err(dbenv,
 			    "%s: metadata page checksum error", name);
-			ret = EINVAL;
-		}
 		goto bad_format;
 	}
 
@@ -577,7 +575,7 @@ swap_retry:
 
 bad_format:
 	__db_err(dbenv, "%s: unexpected file type or format", name);
-	return (ret);
+	return (ret == 0 ? EINVAL : ret);
 }
 
 /*
diff --git a/bdb/log/log_put.c b/bdb/log/log_put.c
index bf6de2b0f7b..64276fa8315 100644
--- a/bdb/log/log_put.c
+++ b/bdb/log/log_put.c
@@ -268,6 +268,8 @@ __log_txn_lsn(dbenv, lsnp, mbytesp, bytesp)
 	if (mbytesp != NULL) {
 		*mbytesp = lp->stat.st_wc_mbytes;
 		*bytesp = (u_int32_t)(lp->stat.st_wc_bytes + lp->b_off);
+
+		lp->stat.st_wc_mbytes = lp->stat.st_wc_bytes = 0;
 	}
 
 	R_UNLOCK(dbenv, &dblp->reginfo);
diff --git a/bdb/mp/mp_fopen.c b/bdb/mp/mp_fopen.c
index a91bf264652..8fdefb0f5e9 100644
--- a/bdb/mp/mp_fopen.c
+++ b/bdb/mp/mp_fopen.c
@@ -344,6 +344,23 @@ __memp_fopen_int(dbmfp, mfp, path, flags, mode, pagesize)
 		goto err;
 	}
 
+	/*
+	 * Figure out the file's size.
+	 *
+	 * !!!
+	 * We can't use off_t's here, or in any code in the mainline library
+	 * for that matter.  (We have to use them in the os stubs, of course,
+	 * as there are system calls that take them as arguments.)  The reason
+	 * is some customers build in environments where an off_t is 32-bits,
+	 * but still run where offsets are 64-bits, and they pay us a lot of
+	 * money.
+	 */
+	if ((ret = __os_ioinfo(
+	    dbenv, rpath, dbmfp->fhp, &mbytes, &bytes, NULL)) != 0) {
+		__db_err(dbenv, "%s: %s", rpath, db_strerror(ret));
+		goto err;
+	}
+
 	/*
 	 * Get the file id if we weren't given one.  Generated file id's
 	 * don't use timestamps, otherwise there'd be no chance of any
@@ -470,6 +487,7 @@ alloc:	/* Allocate and initialize a new MPOOLFILE. */
 		F_SET(mfp, MP_DIRECT);
 	if (LF_ISSET(DB_EXTENT))
 		F_SET(mfp, MP_EXTENT);
+	F_SET(mfp, MP_CAN_MMAP);
 
 	if (path == NULL)
 		F_SET(mfp, MP_TEMP);
@@ -479,21 +497,6 @@ alloc:	/* Allocate and initialize a new MPOOLFILE. */
 		 * and find the number of the last page in the file, all the
 		 * time being careful not to overflow 32 bits.
 		 *
-		 * !!!
-		 * We can't use off_t's here, or in any code in the mainline
-		 * library for that matter.  (We have to use them in the os
-		 * stubs, of course, as there are system calls that take them
-		 * as arguments.)  The reason is that some customers build in
-		 * environments where an off_t is 32-bits, but still run where
-		 * offsets are 64-bits, and they pay us a lot of money.
-		 */
-		if ((ret = __os_ioinfo(
-		    dbenv, rpath, dbmfp->fhp, &mbytes, &bytes, NULL)) != 0) {
-			__db_err(dbenv, "%s: %s", rpath, db_strerror(ret));
-			goto err;
-		}
-
-		/*
 		 * During verify or recovery, we might have to cope with a
 		 * truncated file; if the file size is not a multiple of the
 		 * page size, round down to a page, we'll take care of the
@@ -582,7 +585,7 @@ check_map:
 	 * compiler will perpetrate, doing the comparison in a portable way is
 	 * flatly impossible.  Hope that mmap fails if the file is too large.
 	 */
-#define	DB_MAXMMAPSIZE	(10 * 1024 * 1024)	/* 10 Mb. */
+#define	DB_MAXMMAPSIZE	(10 * 1024 * 1024)	/* 10 MB. */
 	if (F_ISSET(mfp, MP_CAN_MMAP)) {
 		if (path == NULL)
 			F_CLR(mfp, MP_CAN_MMAP);
diff --git a/bdb/rep/rep_record.c b/bdb/rep/rep_record.c
index e725008786c..d3619f509b4 100644
--- a/bdb/rep/rep_record.c
+++ b/bdb/rep/rep_record.c
@@ -1198,6 +1198,9 @@ gap_check:		lp->wait_recs = 0;
 			 * replica get flushed now and again.
 			 */
 			ret = dbenv->log_flush(dbenv, &ckp_lsn);
+		/* Update the last_ckp in the txn region. */
+		if (ret == 0)
+			__txn_updateckp(dbenv, &rp->lsn);
 		break;
 	case DB___txn_regop:
 		if (!F_ISSET(dbenv, DB_ENV_REP_LOGSONLY))
diff --git a/bdb/txn/txn.c b/bdb/txn/txn.c
index 06fc8264afd..78c54791d06 100644
--- a/bdb/txn/txn.c
+++ b/bdb/txn/txn.c
@@ -1209,18 +1209,7 @@ do_ckp:	/* Look through the active transactions for the lowest begin LSN. */
 			return (ret);
 		}
 
-		/*
-		 * We want to make sure last_ckp only moves forward;  since
-		 * we drop locks above and in log_put, it's possible
-		 * for two calls to __txn_ckp_log to finish in a different
-		 * order from how they were called.
-		 */
-		R_LOCK(dbenv, &mgr->reginfo);
-		if (log_compare(&region->last_ckp, &ckp_lsn) < 0) {
-			region->last_ckp = ckp_lsn;
-			(void)time(&region->time_ckp);
-		}
-		R_UNLOCK(dbenv, &mgr->reginfo);
+		__txn_updateckp(dbenv, &ckp_lsn);
 	}
 	return (0);
 }
@@ -1404,3 +1393,36 @@ __txn_reset(dbenv)
 	return (__txn_recycle_log(dbenv,
 	    NULL, &scrap, 0, TXN_MINIMUM, TXN_MAXIMUM));
 }
+
+/*
+ * __txn_updateckp --
+ *	Update the last_ckp field in the transaction region.  This happens
+ * at the end of a normal checkpoint and also when a replication client
+ * receives a checkpoint record.
+ *
+ * PUBLIC: void __txn_updateckp __P((DB_ENV *, DB_LSN *));
+ */
+void
+__txn_updateckp(dbenv, lsnp)
+	DB_ENV *dbenv;
+	DB_LSN *lsnp;
+{
+	DB_TXNMGR *mgr;
+	DB_TXNREGION *region;
+
+	mgr = dbenv->tx_handle;
+	region = mgr->reginfo.primary;
+
+	/*
+	 * We want to make sure last_ckp only moves forward;  since
+	 * we drop locks above and in log_put, it's possible
+	 * for two calls to __txn_ckp_log to finish in a different
+	 * order from how they were called.
+	 */
+	R_LOCK(dbenv, &mgr->reginfo);
+	if (log_compare(&region->last_ckp, lsnp) < 0) {
+		region->last_ckp = *lsnp;
+		(void)time(&region->time_ckp);
+	}
+	R_UNLOCK(dbenv, &mgr->reginfo);
+}
diff --git a/sql/ha_berkeley.cc b/sql/ha_berkeley.cc
index 1b8a2d9b3f8..adc2e0db195 100644
--- a/sql/ha_berkeley.cc
+++ b/sql/ha_berkeley.cc
@@ -1940,6 +1940,24 @@ int ha_berkeley::delete_table(const char *name)
   DBUG_RETURN(error);
 }
 
+
+int ha_berkeley::rename_table(const char * from, const char * to)
+{
+  int error;
+  char from_buff[FN_REFLEN];
+  char to_buff[FN_REFLEN];
+
+  if ((error= db_create(&file, db_env, 0)))
+    my_errno= error;
+  else
+    error= file->rename(file, 
+			fn_format(from_buff, from, "", ha_berkeley_ext, 2 | 4),
+			NULL, fn_format(to_buff, to, "", ha_berkeley_ext,
+					2 | 4), 0);
+  return error;
+}
+
+
 /*
   How many seeks it will take to read through the table
   This is to be comparable to the number returned by records_in_range so
diff --git a/sql/ha_berkeley.h b/sql/ha_berkeley.h
index dfdd12470d6..dd42e7ab9e2 100644
--- a/sql/ha_berkeley.h
+++ b/sql/ha_berkeley.h
@@ -152,6 +152,7 @@ class ha_berkeley: public handler
   int create(const char *name, register TABLE *form,
 	     HA_CREATE_INFO *create_info);
   int delete_table(const char *name);
+  int rename_table(const char* from, const char* to);
   THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
 			     enum thr_lock_type lock_type);