On Sun, Mar 07, 2010 at 03:48:23AM +0700, Antoine Martin wrote:
> Hi,
>
> With qemu-kvm-0.12.3:
> ./qemu-system-x86_64 [..] -drive file=/dev/sdc9,if=virtio,cache=none [..]
> [ 1.882843] vdc:
> [ 2.365154] udev: starting version 146
> [ 2.693768] end_request: I/O error, dev vdc, sector 126
> [ 2.693772] Buffer I/O error on device vdc, logical block 126
> [ 2.693775] Buffer I/O error on device vdc, logical block 127
> [ 2.693777] Buffer I/O error on device vdc, logical block 128
> [ 2.693779] Buffer I/O error on device vdc, logical block 129
> [ 2.693781] Buffer I/O error on device vdc, logical block 130
> [ 2.693783] Buffer I/O error on device vdc, logical block 131
> [ 2.693785] Buffer I/O error on device vdc, logical block 132
> [ 2.693787] Buffer I/O error on device vdc, logical block 133
> [ 2.693788] Buffer I/O error on device vdc, logical block 134
> [ 2.693814] end_request: I/O error, dev vdc, sector 0
> [ 3.144870] end_request: I/O error, dev vdc, sector 0
> [ 3.499377] end_request: I/O error, dev vdc, sector 0
> [ 3.523247] end_request: I/O error, dev vdc, sector 0
> [ 3.547130] end_request: I/O error, dev vdc, sector 0
> [ 3.550076] end_request: I/O error, dev vdc, sector 0
>
> Works fine with kvm-88:
> cp /usr/src/KVM/kvm-88/pc-bios/*bin ./
> cp /usr/src/KVM/kvm-88/x86_64-softmmu/qemu-system-x86_64 ./
> ./qemu-system-x86_64 [..] -drive file=/dev/sdc9,if=virtio,cache=none [..]
>
> [ 1.650274] vdc: unknown partition table
> [ 112.704164] EXT4-fs (vdc): mounted filesystem with ordered data mode
>
> I've tried running as root, using the block device directly (as
> shown above) rather than using a softlink, etc..
>
> Something broke.
> Host and guest are both running 2.6.33 and latest KVM.
>
Are you sure you have write access to the block device?
--
Gleb.
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