Description of problem: From time to time my qemu disk images seem to get corrupted so that qemu can't open them anymore. It seems to start happening after I turn off a virtual machine using a disk through the "quit" command in qemu. Last time this happened when I tried to quit a machine that hasn't gotten to the point of loading the bootloader. The VM was at the boot device selection menu. I ran a "savevm name" command and then I ran the "quit" command. Version-Release number of selected component (if applicable): qemu.i386 0.9.1-6.fc9 kvm.i386 65-7.fc9 I've noticed this happen with qemu in Fedora 7 as well as in Fedora 9. How reproducible: Now that the disk image is "corrupted", I can reproduce the error all the time. However, I don't know how to reproduce the "corruption". Steps to Reproduce: 1. qemu-kvm -hda /local/virtual-machines/debian.disk -m 300 Actual results: qemu: could not open disk image /local/virtual-machines/debian.disk Expected results: Qemu should load this image without problems since it was not modified by external programs. Additional info: Here is the last bit of the output I get from `strace qemu-img info /local/virtual-machines/debian.disk`: stat64("/local/virtual-machines/debian.disk", {st_mode=S_IFREG|0644, st_size=2485100671, ...}) = 0 open("/local/virtual-machines/debian.disk", O_RDONLY|O_LARGEFILE) = 3 _llseek(3, 0, [2485100671], SEEK_END) = 0 _llseek(3, 0, [0], SEEK_SET) = 0 read(3, "QFI\373\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\f\0\0\0\31\0\0\0\0"..., 2048) = 2048 close(3) = 0 open("/local/virtual-machines/debian.disk", O_RDWR|O_LARGEFILE) = 3 _llseek(3, 0, [2485100671], SEEK_END) = 0 _llseek(3, 0, [0], SEEK_SET) = 0 read(3, "QFI\373\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\f\0\0\0\31\0\0\0\0"..., 72) = 72 mmap2(NULL, 413696, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f1d000 _llseek(3, 4096, [4096], SEEK_SET) = 0 read(3, "\0\0\0\0\216\364 \0\0\0\0\0c\317 \0\0\0\0\0\217\37p\0\0\0\0\0\216\363\360\0"..., 409600) = 409600 _llseek(3, 413696, [413696], SEEK_SET) = 0 read(3, "\0\0\0\0\0\6`\0\0\0\0\0\0\200\20\0\0\0\0\0\1\0\20\0\0\0\0\0\1\200\20\0"..., 4096) = 4096 munmap(0xb7f1d000, 413696) = 0 close(3) = 0 write(2, "qemu-img: ", 10qemu-img: ) = 10 write(2, "Could not open \'/local/virtual-m"..., 52Could not open '/local/virtual-machines/debian.disk') = 52 write(2, "\n", 1 ) = 1 exit_group(1) = ? More information: $ file /local/virtual-machines/debian.disk /local/virtual-machines/debian.disk: Qemu Image, Format: Qcow , Version: 2 $ qemu -hda /local/virtual-machines/debian.disk -m 300 qemu: could not open disk image /local/virtual-machines/debian.disk
Actually, I was able to reproduce this "corruption" with an old copy of the disk image. I did exactly what I mentioned originally: 1. $ qemu-kvm -hda /local/virtual-machines/debian.disk -m 300 2. quickly press F10 to open the boot device selection menu 3. press ctrl+alt+2 to go to the qemu console 4. type "savevm configured-ssh" 5. type "quit" 6. $ qemu-kvm -hda /local/virtual-machines/debian.disk -m 300 This gives me the error again: qemu: could not open disk image /local/virtual-machines/debian.disk Anyone can try this with my disk image: http://plouj.com/debian.disk.gz (265MB).
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Not a problem with: qemu-0.10.4-4.fc11.x86_64