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// check that there is preallocation on explicit createCollection() and no unncessary preallocation after restart
port = allocatePorts( 1 )[ 0 ];
var baseName = "jstests_preallocate2";
var m = startMongod( "--port", port, "--dbpath", "/data/db/" + baseName );
assert.eq( 0, m.getDBs().totalSize );
m.getDB( baseName ).createCollection( baseName + "1" );
assert.soon( function() { return m.getDBs().totalSize > 100000000; }, "expected second file to bring total size over 100MB" );
stopMongod( port );
var m = startMongoProgram( "mongod", "--port", port, "--dbpath", "/data/db/" + baseName );
size = m.getDBs().totalSize;
m.getDB( baseName ).createCollection( baseName + "2" );
sleep( 2000 ); // give prealloc a chance
assert.eq( size, m.getDBs().totalSize );
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