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/* $Id: tstVDDiscard.vd $ */
/**
* Storage: Testcase for discarding data in a disk.
*/
/*
* Copyright (C) 2011-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
void main()
{
/* Init I/O RNG for generating random data for writes. */
iorngcreate(10M, "manual", 1234567890);
print("Testing VDI");
/* Create disk containers, read verification is on. */
createdisk("disk", true /* fVerify */);
/* Create the disk. */
create("disk", "base", "tstCompact.vdi", "dynamic", "VDI", 2G, false /* fIgnoreFlush */, false);
/* Fill the disk with random data */
io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 100, "none");
/* Read the data to verify it once. */
io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
close("disk", "single", false);
open("disk", "tstCompact.vdi", "VDI", true, false, false, true, false, false);
printfilesize("disk", 0);
discard("disk", true, "6,0M,512K,1M,512K,2M,512K,3M,512K,4M,512K,5M,512K");
discard("disk", true, "6,6M,512K,7M,512K,8M,512K,9M,512K,10M,512K,11M,512K");
discard("disk", true, "1,512K,512K");
discard("disk", false, "1,1024K,64K");
printfilesize("disk", 0);
print("Discard whole block");
discard("disk", true, "1,20M,1M");
printfilesize("disk", 0);
print("Split Discard");
discard("disk", true, "1,21M,512K");
printfilesize("disk", 0);
discard("disk", true, "1,22016K,512K");
printfilesize("disk", 0);
/* Cleanup */
close("disk", "single", true);
destroydisk("disk");
/* Destroy RNG and pattern */
iorngdestroy();
}
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