| 1 | /* $Id: tstVDDiscard.vd 44943 2013-03-06 23:07:00Z vboxsync $ */
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| 2 | /**
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| 3 | * Storage: Testcase for discarding data in a disk.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2011 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | void main()
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| 19 | {
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| 20 | /* Init I/O RNG for generating random data for writes. */
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| 21 | iorngcreate(10M, "manual", 1234567890);
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| 22 |
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| 23 | print("Testing VDI");
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| 24 |
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| 25 | /* Create disk containers, read verification is on. */
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| 26 | createdisk("disk", true /* fVerify */);
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| 27 | /* Create the disk. */
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| 28 | create("disk", "base", "tstCompact.vdi", "dynamic", "VDI", 2G, false /* fIgnoreFlush */);
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| 29 | /* Fill the disk with random data */
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| 30 | io("disk", false, 1, "seq", 64K, 0, 2G, 2G, 100, "none");
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| 31 | /* Read the data to verify it once. */
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| 32 | io("disk", false, 1, "seq", 64K, 0, 2G, 2G, 0, "none");
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| 33 | close("disk", "single", false);
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| 34 |
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| 35 | open("disk", "tstCompact.vdi", "VDI", true, false, false, true, false);
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| 36 | printfilesize("disk", 0);
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| 37 | discard("disk", true, "6,0M,512K,1M,512K,2M,512K,3M,512K,4M,512K,5M,512K");
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| 38 | discard("disk", true, "6,6M,512K,7M,512K,8M,512K,9M,512K,10M,512K,11M,512K");
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| 39 | discard("disk", true, "1,512K,512K");
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| 40 | discard("disk", false, "1,1024K,64K");
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| 41 | printfilesize("disk", 0);
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| 42 |
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| 43 | print("Discard whole block");
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| 44 | discard("disk", true, "1,20M,1M");
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| 45 | printfilesize("disk", 0);
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| 46 |
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| 47 | print("Split Discard");
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| 48 | discard("disk", true, "1,21M,512K");
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| 49 | printfilesize("disk", 0);
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| 50 | discard("disk", true, "1,22016K,512K");
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| 51 | printfilesize("disk", 0);
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| 52 |
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| 53 | /* Cleanup */
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| 54 | close("disk", "single", true);
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| 55 | destroydisk("disk");
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| 56 |
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| 57 | /* Destroy RNG and pattern */
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| 58 | iorngdestroy();
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| 59 | }
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