[Qemu-discuss] qemu-kvm hangs at boot when the disk interface is virtio.

[Shiyao MA]

Hi,

When use kvm with the virtio disk interface, the guest Linux hangs at boot.

# this hangs
 sudo kvm -nographic -kernel mybzimage --drive
file=debian.img,format=raw,index=0,if=virtio -append "debug
console=ttyS0 root=/dev/vda"

full log here:
https://bpaste.net/show/192cc92cbfcb


However,  using tcg emulation mode, it boots normally.

qemu -nographic -kernel mybzimage --drive
file=debian.img,format=raw,index=0,if=virtio -append "console=ttyS0
root=/dev/vda"

full log here:
https://bpaste.net/show/5fe3363a697a


-- 
Best,
Shiyao