I have a really annoying bug, I can reproduce often (although it is a bit random).<br />
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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..)<br />
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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)<br />
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If i use virsh/virt-manager to reboot its fine, only from inside a centos6 vm (with latest centos kernel) does this occur<br />
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As a test I installed centos 6.2 - this was 100% fine *until* I did a yum update then I got the same issue.<br />
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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)<br />
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At present we are replacing Ubuntu as the KVM host (to Centos) whilst this bug remains.
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