Hi all, I'm doing some dev work against the native RHEL/centos 5.5 KVM installation for maintenance, creation and deletion of virtual guests using the libvirt API vai the java bindings from a java based web app. Things in general seem to be working - I can connect to and query the kvm instance using the libvirt interface and get a list of guests, pull information about them and stop/start/restart guests. I'm hitting a bit of an issue with creation of a guest however.... When calling domainDefineXML with XML following the domain XML specification (with the XML as per a dumpxml on the relevant box) I get an error creating the guest of: "internal error unknown lifecycle action restart " The virsh version information for the host is: Compiled against library: libvir 0.6.3 Using library: libvir 0.6.3 Using API: QEMU 0.6.3 Running hypervisor: QEMU 0.10.5 I have tried this against my ubuntu system as well with the same error - that has version: Compiled against library: libvir 0.7.5 Using library: libvir 0.7.5 Using API: QEMU 0.7.5 Running hypervisor: QEMU 0.12.3 I'm currently using jna 3.2.5 with libvirt 0.4.5 bindings. The example XML being used is: <domain type="kvm"> <name> newguestfomwebapp </name> <memory> 512 </memory> <vcpu> 1 </vcpu> <os> <type arch="x86_64" machine="rhel5.4.0"> hvm </type> <boot dev="hd"/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset="utc"/> <on_poweroff> destroy </on_poweroff> <on_reboot> restart </on_reboot> <on_crash> restart </on_crash> <devices> <emulator> /usr/libexec/qemu-kvm </emulator> <disk type="file" device="cdrom"> <driver name="qemu" type="raw"/> <source file="/var/lib/libvirt/images/ISOs/centos5.5-ks.iso"/> <target dev="hdc" bus="ide"/> <readonly/> </disk> <interface type="network"> <source network="default"/> <model type="virtio"/> </interface> <input type="mouse" bus="ps2"/> <graphics type="vnc" port="-1" autoport="yes"/> </devices> </domain> If I remove the lifecycle information from the xml I get: "unknown OS type hvm " The xml works from the command line with virsh define ... Anyone seen anything similar or have any ideas? Regards, James