SERVER-7543 - don't over allocate extents, just round

mongodb · Nov 2, 2012 · f9b9242 · f9b9242
1 parent b4b2c54
commit f9b9242
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/jstests/capped_server7543.js b/jstests/capped_server7543.js
@@ -0,0 +1,11 @@
+
+mydb = db.getSisterDB( "capped_server7543" );
+mydb.dropDatabase();
+
+mydb.createCollection( "foo" ,  { capped : true , size : 12288 } );
+
+assert.eq( 12288, mydb.foo.stats().storageSize );
+assert.eq( 1, mydb.foo.validate(true).extentCount );
+
+mydb.dropDatabase();
+
diff --git a/src/mongo/db/pdfile.cpp b/src/mongo/db/pdfile.cpp
@@ -242,8 +242,10 @@ namespace mongo {
             BSONElement e = options.getField("size");
             if ( e.isNumber() ) {
                 size = e.numberLong();
-                size += 256;
+                size += 0xff;
                 size &= 0xffffffffffffff00LL;
+                if ( size < Extent::minSize() )
+                    size = Extent::minSize();
             }
         }