On Tue, Jan 12, 2010 at 04:06:32PM -0800, su disheng wrote: > Hi, > In the following libvirt API calling sequence, I always get an error "no > domain with matching uuid" > Connect _conn = new Connect("qemu:///system", false); > _conn.domainDefineXML(kvm_guest_xml); > Domain dm = _conn.domainLookupByName(kvm_guest_name); > dm.create(); > > /* stop, undefine, and re-start the vm*/ > dm.shutdown(); > dm.undefine(); > dm.domainDefineXML(kvm_guest_xml); > /****A****/ > Domain dm = _conn.domainLookupByName(kvm_guest_name); > dm.create() /********Error!!!!**/ > > if I close the connection, and re-connect qemu at the end of > /****A****/, then everything is OK. I think the first 'dm' object you create is not being freed / garbage collected. This means the underlying libvirt virDomainPtr object is not released. And so when you then _conn.domainLookupByName() after '****A****' you are still getting an handle to the old object and thus the stale UUID.

> From the log, seems that uuid is not updated immediately, for this > connection, the uuid is in the stale state? > I am using libvirt 0.6.3, if it's a bug, does it fixed in the latest > code? or Have I need to close the connection for each vm shutdown/re-define? You should not need to close the connection, provided you ensure all the 'Domain' objects are freed/garbage collected Alternatively, if you wish to re-use the same name,then you could try auto-generating the UUID yourself, so you use the same UUID when defining the domain for the second time Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/:| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org:| |: http://autobuild.org -o- http://search.cpan.org/~danberr/<http://search.cpan.org/%7Edanberr/>:| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|