1 | /* $Id: tstVDDiscard.vd 98103 2023-01-17 14:15:46Z 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) 2011-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 | void main()
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29 | {
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30 | /* Init I/O RNG for generating random data for writes. */
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31 | iorngcreate(10M, "manual", 1234567890);
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32 |
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33 | print("Testing VDI");
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34 |
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35 | /* Create disk containers, read verification is on. */
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36 | createdisk("disk", true /* fVerify */);
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37 | /* Create the disk. */
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38 | create("disk", "base", "tstCompact.vdi", "dynamic", "VDI", 2G, false /* fIgnoreFlush */, false);
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39 | /* Fill the disk with random data */
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40 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 100, "none");
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41 | /* Read the data to verify it once. */
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42 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
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43 | close("disk", "single", false);
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44 |
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45 | open("disk", "tstCompact.vdi", "VDI", true, false, false, true, false, false);
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46 | printfilesize("disk", 0);
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47 | discard("disk", true, "6,0M,512K,1M,512K,2M,512K,3M,512K,4M,512K,5M,512K");
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48 | discard("disk", true, "6,6M,512K,7M,512K,8M,512K,9M,512K,10M,512K,11M,512K");
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49 | discard("disk", true, "1,512K,512K");
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50 | discard("disk", false, "1,1024K,64K");
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51 | printfilesize("disk", 0);
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52 |
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53 | print("Discard whole block");
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54 | discard("disk", true, "1,20M,1M");
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55 | printfilesize("disk", 0);
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56 |
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57 | print("Split Discard");
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58 | discard("disk", true, "1,21M,512K");
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59 | printfilesize("disk", 0);
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60 | discard("disk", true, "1,22016K,512K");
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61 | printfilesize("disk", 0);
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62 |
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63 | /* Cleanup */
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64 | close("disk", "single", true);
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65 | destroydisk("disk");
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66 |
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67 | /* Destroy RNG and pattern */
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68 | iorngdestroy();
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69 | }
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