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Re: [Qemu-devel] QCOW image corruption under QEMU 0.9.0
From: |
J M Cerqueira Esteves |
Subject: |
Re: [Qemu-devel] QCOW image corruption under QEMU 0.9.0 |
Date: |
Sun, 25 Feb 2007 03:38:57 +0000 |
User-agent: |
Icedove 1.5.0.9 (X11/20061220) |
J M Cerqueira Esteves wrote:
> Curiously this damaged image file has 4543348736 bytes.
> I wonder if there some new bug triggered by the image file size,
> for some size around 4500000000 bytes...
I have a copy of the disk image file as it was just before starting the
qemu run which damaged it, and now I noticed that, during that qemu run,
the image file size did not change: 4543348736 bytes.
However, comparing both images with cmp -l shows extensive changes.
Just an example, from the first bytes (byte number, original value,
corrupted value):
1 121 0
2 106 0
3 111 0
4 373 0
8 2 0
24 14 0
28 5 0
39 50 0
47 20 0
52 1 0
55 20 0
60 2 0
1881 0 200
1887 0 40
1889 0 200
1895 0 100
9049 200 0
9054 1 0
9055 220 0
9057 200 0
9061 60 0
9062 115 0
9063 100 0
... many more zeroed out...
49487 220 0
49569 200 0
49573 325 0
49574 357 0
49575 300 0
49665 0 147
49666 0 145
49667 0 55
49668 0 62
49669 0 56
49670 0 66
49671 0 56
49672 0 61
49673 0 70
49674 0 55
49675 0 63
49676 0 55
49677 0 153
... many more un-zeroed ...
49853 0 40
49854 0 151
49855 0 163
49856 0 40
49857 200 141
49858 0 166
49859 0 141
49860 0 151
49861 46 154
49862 174 141
49863 140 142
49864 0 154
49865 0 145
... many more un-zeroed ...
49983 0 142
49984 0 157
49985 200 157
49986 0 164
49987 0 40
49988 0 171
49989 15 157
49990 354 165
49991 200 162
49992 0 40
49993 200 155
49994 0 141
49995 0 143
49996 0 150
49997 16 151
49998 1 156
49999 260 145
50000 0 56
50001 0 12
50002 0 12
...
Best regards
J Esteves