On Fri, Jul 2, 2010 at 4:31 AM, ewheeler <kvm@xxxxxxxxxxxxxxx> wrote: > Hello all, > > I'm booting a CentOS kernel under today's KVM git and it hangs after > initializing the serial port when the drive if=virtio, but not when > drive if=ide. Look close---this is not a "forgot to add virtio_blk" > problem. If I use 0.12.3 from Ubuntu 10.04 it works properly. > > Reproduction: > > Using kvm 0.12.3 on ubuntu 10.04 (1:84+dfsg-0ubuntu16+0.12.3+noroms > +0ubuntu9) it will work properly: > > qemu-system-x86_64 -drive file=dummy-disk-image,if=virtio \ > -kernel vmlinuz-2.6.18-194.3.1.el5.centos.plus > > As expected, the kernel panics unable to mount root (good-boot.png). > This makes sense, as "dummy-disk-image" is 1MB of 0x00 bytes. > > ---However---if I use today's git (2010-07-01) of kvm: > > /usr/local/kvm-git/bin/qemu-system-x86_64 -drive file=dummy-disk-image,if=virtio \ > -kernel vmlinuz-2.6.18-194.3.1.el5.centos.plus > > This hangs just after initializing the Serial device (obtained by adding > -serial stdio -append console=ttyS0): > > Note that this only happens with the disk interface set to virtio > (if=virtio). It works fine for ide (if=ide). > > > Am I doing something wrong here? > Is anyone else having this problem? I have seen this issue with a RHEL 5.5 guest running under qemu-kvm.git. It boots a new guest fine but hangs as you described with the RHEL 5.5 kernel. I have not investigated. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
