I have a really annoying bug, I can reproduce often (although it is a bit random). I have an Ubuntu 12.04 KVM server , using Centos 6 guests - when I install the latest kernel for centos 6.3 -2.6.32-279.1.1.el6 - if you reboot from inside a Centos6 vm it gets stuck in a loop between seabios/grub - this does't happen 100% of the time - there is a high chance it will though - usually after 3 reboots it will get stuck in the loop - it will NEVER reboot without manual intervention (virsh destroy..) It seem to fail at the kernel initialise stage - if I use vga=normal I can see the words 'Probing EEID...' for a sec (then it reboots) If i use virsh/virt-manager to reboot its fine, only from inside a centos6 vm (with latest centos kernel) does this occur As a test I installed centos 6.2 - this was 100% fine *until* I did a yum update then I got the same issue. Ubuntu 10.04 KVM host / Centos 6.3 (guest) is fine - so i'm unsure where the fault is. Likewize a Centos 6.3 kvm host and centos 6.3 guest is also fine... I have installed a 2nd Ubuntu 12.04 KVM server and the exact same thing occurs (i.e 2 different servers = same issue) How can I troubleshoot this ? I already have already enabled the boot (options 'console=ttyS0' (which I can access vm's using virsh console id) however this gives no output (as it crashes when initialising the kernel) I have also tried installing the latest qemu-kvm (1.1) from source on the Ubuntu 12.04 kvm server, the same thing occurs . I have reported bugs @ Ubuntu and Centos (only Ubuntu have bothered to respond) https://bugs.launchpad.net/centos/+bug/1025188 http://bugs.centos.org/view.php?id=5841 There is a vid showing the issue here https://launchpadlibrarian.net/110374291/out.ogv (you can't see the boot msgs as I am using console=ttyS0 on the boot options) Any info, help, hints at where to look next would be useful Regards -- 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
