bk commit into 5.1 tree (Justin.He:1.2553) BUG#24560

[justin.he]

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ChangeSet@stripped, 2007-04-25 12:59:27+08:00, Justin.He@stripped +1 -0
  Bug#24560 Data nodes died(lgman) if undo_buffer_size from logfile group has small value

  storage/ndb/src/kernel/blocks/dbdict/Dbdict.cpp@stripped, 2007-04-25 12:59:24+08:00,
Justin.He@stripped +5 -1
    since undo_buffer_size cannot be less than 96KB in LGMAN block,
    add a check to verify this limitation

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	Justin.He
# Host:	dev3-240.dev.cn.tlan
# Root:	/home/justin.he/mysql/mysql-5.1/bug24560-5.1-new-ndb-bj

--- 1.122/storage/ndb/src/kernel/blocks/dbdict/Dbdict.cpp	2007-04-25 12:59:35 +08:00
+++ 1.123/storage/ndb/src/kernel/blocks/dbdict/Dbdict.cpp	2007-04-25 12:59:35 +08:00
@@ -18,6 +18,7 @@
 
 #define DBDICT_C
 #include "Dbdict.hpp"
+#include "diskpage.hpp"
 
 #include <ndb_limits.h>
 #include <NdbOut.hpp>
@@ -15547,7 +15548,10 @@
     } 
     else if(fg.FilegroupType == DictTabInfo::LogfileGroup)
     {
-      if(!fg.LF_UndoBufferSize)
+      /**
+       * undo_buffer_size can't be less than 96KB in LGMAN block 
+       */
+      if(fg.LF_UndoBufferSize < 3 * File_formats::NDB_PAGE_SIZE)
       {
 	op->m_errorCode = CreateFilegroupRef::InvalidUndoBufferSize;
 	break;