Hello all,
When I try to run kvm with the following command line,
/usr/bin/qemu-system-x86_64 -m 1024 -kernel
/kernels/git/kvm/arch/x86/boot/bzImage -append "root=/dev/sda" -drive
file=f8.img,boot=on,if=virtio
I get an error saying 'A disk image must be given for 'hda' when booting a
Linux kernel'
I traced it to the following piece of code in kvm-userspace/qemu/hw/pc.c
static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
..
...
hda = drive_get_index(IF_IDE, 0, 0);
if (hda == -1) {
fprintf(stderr, "A disk image must be given for 'hda' when booting "
"a Linux kernel\n");
exit(1);
}
This function then proceeds to change the bootloader to boot the kernel
directly.
Changing IF_IDE to IF_VIRTIO made kvm to run normally. So, i think we should
not check for hda here, but for the boot disk.
I tried to fix it, but I could not figure out any clean way of obtaining the
boot disk. Please help.
--
regards,
balaji rao
NITK
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