kexec/kdump of a kvm guest?

Mike Snitzer
2008-06-26T18:58:55Z

My host is x86_64 RHEL5U1 running 2.6.25.4 with kvm-70 (kvm-intel).

When I configure kdump in the guest (running 2.6.22.19) and force a
crash (with 'echo c > /proc/sysrq-trigger) kexec boots the kdump
kernel but then the kernel hangs (before it gets to /sbin/init et al).
On the host, the associated qemu is consuming 100% cpu.

I really need to be able to collect vmcores from my kvm guests. So
far I can't (on raw hardware all works fine).

Any pointers would be appreciated.