| 1 | /* $Id: tstVDDiscard.vd 106061 2024-09-16 14:03:52Z 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) 2011-2024 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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