Saturday, May 10, 2014

How do I issue a sysrq on a libvirt/kvm guest using "virsh send-key"?

Issue the following from the host:
# virsh send-key <guest_domain_name> KEY_LEFTALT KEY_SYSRQ KEY_<SYSRQ>
Where:
  • <SYSRQ> is the capitalized sysrq you would like to issue
  • <guest_domain_name> is the name of the guest
For example, to collect a thread dump (sysrq-t) from a guest named rhel5vm, run:
# virsh send-key rhel5vm KEY_LEFTALT KEY_SYSRQ KEY_T
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