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/* $Id: tstVDCompact.vd $ */
/**
* Storage: Testcase for compacting disks.
*/
/*
* 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 tstCompact(string strMsg, string strBackend)
{
print(strMsg);
/* Create disk containers, read verification is on. */
createdisk("disk", true);
create("disk", "base", "tstCompact.disk", "dynamic", strBackend, 200M, false, 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");
/* Fill a part with 0's. */
io("disk", false, 1, "seq", 64K, 100M, 150M, 50M, 100, "zero");
/* Now compact. */
compact("disk", 0);
/* Read again to verify that the content hasn't changed. */
io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
/* Fill everything with 0. */
io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 100, "zero");
/* Now compact again. */
compact("disk", 0);
/* Read again to verify that the content hasn't changed. */
io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
close("disk", "single", true);
destroydisk("disk");
}
void tstSnapshotCompact(string strMsg, string strBackend)
{
print(strMsg);
/* Create disk containers, read verification is on. */
createdisk("disk", true);
create("disk", "base", "tstCompact.disk", "dynamic", strBackend, 200M, false, false);
/* Fill the disk with random data. */
io("disk", false, 1, "seq", 64K, 0, 100M, 100M, 100, "none");
create("test", "diff", "tst2.disk", "dynamic", strBackend, 200M, false /* fIgnoreFlush */, true /* fHonorSame */);
io("disk", false, 1, "seq", 64K, 100M, 200M, 100M, 100, "none");
io("disk", false, 1, "seq", 64K, 100M, 150M, 50M, 100, "zero");
create("disk", "diff", "tst3.disk", "dynamic", strBackend, 200M, false /* fIgnoreFlush */, true /* fHonorSame */);
merge("disk", 1, 2);
compact("disk", 1);
close("disk", "single", true);
close("disk", "single", true);
close("disk", "single", true);
destroydisk("disk");
}
void main()
{
/* Init I/O RNG for generating random data for writes. */
iorngcreate(10M, "manual", 1234567890);
/* Create zero pattern */
iopatterncreatefromnumber("zero", 1M, 0);
tstCompact("Testing VDI", "VDI");
tstCompact("Testing VHD", "VHD");
tstSnapshotCompact("Testing Snapshot VDI", "VDI");
tstSnapshotCompact("Testing Snapshot VHD", "VHD");
/* Destroy RNG and pattern */
iopatterndestroy("zero");
iorngdestroy();
}
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