/* $Id: tstVDMultBackends.vd $ */
/**
 * Storage: Simple I/O test with different backends in one chain.
 */

/*
 * Copyright (C) 2011-2019 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 tstIo(string strMessage, string strBackend)
{
    print(strMessage);
    createdisk("test", true /* fVerify */);
    create("test", "base", "tst.disk", "dynamic", strBackend, 2G, false /* fIgnoreFlush */, false);
    io("test", true, 32, "seq", 64K, 0, 2G, 200M, 100, "none");
    io("test", false, 1, "seq", 64K, 0, 2G, 200M, 100, "none");
    io("test", true, 32, "seq", 64K, 0, 2G, 200M,   0, "none");
    io("test", false, 1, "seq", 64K, 0, 2G, 200M,   0, "none");
    create("test", "diff", "tst2.disk", "dynamic", "VMDK", 2G, false /* fIgnoreFlush */, false);
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,  50, "none");
    io("test", false, 1, "rnd", 64K, 0, 2G, 200M,  50, "none");
    create("test", "diff", "tst3.disk", "dynamic", "VMDK", 2G, false /* fIgnoreFlush */, false);
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,  50, "none");
    io("test", false, 1, "rnd", 64K, 0, 2G, 200M,  50, "none");
    create("test", "diff", "tst4.disk", "dynamic", "VMDK", 2G, false /* fIgnoreFlush */, false);
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,  50, "none");
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,   0, "none");

    create("test", "diff", "tst5.disk", "dynamic", "VMDK", 2G, false /* fIgnoreFlush */, false);
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,  50, "none");
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,   0, "none");

    create("test", "diff", "tst6.disk", "dynamic", "VMDK", 2G, false /* fIgnoreFlush */, false);
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,  50, "none");
    io("test", true, 32, "rnd", 64K, 0, 2G, 200M,   0, "none");

    close("test", "single", true /* fDelete */);
    close("test", "single", true /* fDelete */);
    close("test", "single", true /* fDelete */);
    destroydisk("test");
}

void main()
{
    /* Init I/O RNG for generating random data for writes */
    iorngcreate(10M, "manual", 1234567890);

    tstIo("Testing VDI", "VDI");

    iorngdestroy();
}