1 | /* $Id: tstVDCompact.vd 66664 2017-04-24 18:42:49Z vboxsync $ */
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2 | /**
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3 | * Storage: Testcase for compacting disks.
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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 tstCompact(string strMsg, string strBackend)
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19 | {
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20 | print(strMsg);
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21 |
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22 | /* Create disk containers, read verification is on. */
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23 | createdisk("disk", true);
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24 | create("disk", "base", "tstCompact.disk", "dynamic", strBackend, 200M, false, false);
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25 |
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26 | /* Fill the disk with random data. */
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27 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 100, "none");
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28 | /* Read the data to verify it once. */
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29 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
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30 | /* Fill a part with 0's. */
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31 | io("disk", false, 1, "seq", 64K, 100M, 150M, 50M, 100, "zero");
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32 |
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33 | /* Now compact. */
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34 | compact("disk", 0);
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35 | /* Read again to verify that the content hasn't changed. */
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36 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
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37 | /* Fill everything with 0. */
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38 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 100, "zero");
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39 | /* Now compact again. */
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40 | compact("disk", 0);
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41 | /* Read again to verify that the content hasn't changed. */
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42 | io("disk", false, 1, "seq", 64K, 0, 200M, 200M, 0, "none");
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43 |
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44 | close("disk", "single", true);
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45 | destroydisk("disk");
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46 | }
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47 |
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48 | void tstSnapshotCompact(string strMsg, string strBackend)
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49 | {
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50 | print(strMsg);
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51 |
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52 | /* Create disk containers, read verification is on. */
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53 | createdisk("disk", true);
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54 | create("disk", "base", "tstCompact.disk", "dynamic", strBackend, 200M, false, false);
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55 |
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56 | /* Fill the disk with random data. */
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57 | io("disk", false, 1, "seq", 64K, 0, 100M, 100M, 100, "none");
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58 |
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59 | create("test", "diff", "tst2.disk", "dynamic", strBackend, 200M, false /* fIgnoreFlush */, true /* fHonorSame */);
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60 |
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61 | io("disk", false, 1, "seq", 64K, 100M, 200M, 100M, 100, "none");
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62 | io("disk", false, 1, "seq", 64K, 100M, 150M, 50M, 100, "zero");
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63 |
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64 | create("disk", "diff", "tst3.disk", "dynamic", strBackend, 200M, false /* fIgnoreFlush */, true /* fHonorSame */);
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65 | merge("disk", 1, 2);
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66 |
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67 | compact("disk", 1);
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68 |
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69 | close("disk", "single", true);
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70 | close("disk", "single", true);
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71 | close("disk", "single", true);
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72 | destroydisk("disk");
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73 | }
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74 |
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75 | void main()
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76 | {
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77 | /* Init I/O RNG for generating random data for writes. */
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78 | iorngcreate(10M, "manual", 1234567890);
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79 |
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80 | /* Create zero pattern */
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81 | iopatterncreatefromnumber("zero", 1M, 0);
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82 |
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83 | tstCompact("Testing VDI", "VDI");
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84 | tstCompact("Testing VHD", "VHD");
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85 |
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86 | tstSnapshotCompact("Testing Snapshot VDI", "VDI");
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87 | tstSnapshotCompact("Testing Snapshot VHD", "VHD");
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88 |
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89 | /* Destroy RNG and pattern */
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90 | iopatterndestroy("zero");
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91 | iorngdestroy();
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92 | }
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