[Libvir] Xen reboot does not work with Sys::Virt perl binding

Hello guys! I am using the perl bindings (Sys::Virt) to manage my virtual xen hosts. Because it directly maps the C api, I thought it's a good idea to ask you instead of the author of this module. Xen version is 3.0 with libvirt 0.1.9 on a red hat box. while calling the reboot method i get following error: libvirt error code: 0, message: Unknown problem In this case the virtual system does not reboot. But with shutdown method, which throw the same error, the system shuts down correctly. Here is my code: my $vmm = Sys::Virt->new(); my $dom = eval { $vmm->get_domain_by_name( $p->{ name } ) }; $dom->reboot(&Sys::Virt::Domain::REBOOT_RESTART); Is this a known issue? Thank you for your help. Best regards, Christian