1 | /* $Id: tstVDDiscard.vd 82968 2020-02-04 10:35:17Z 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) 2011-2020 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 */, false);
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29 | /* Fill the disk with random data */
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30 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 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, 200M, 200M, 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, 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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