The vms create by NOVA should be persistent ,but after libvirt pod restarts,the vms created before turn transient. Then operate these vms ,the nova-compute will throw this exception:
| fault | {"message": "Requested operation is not valid: cannot do managed save for transient domain", "code": 500, "details": " File \"/usr/lib/python2.7/site-packages/nova/compute/manager.py\", line 207, in decorated_function |
| | File \"/usr/lib/python2.7/site-packages/nova/compute/manager.py\", line 4181, in suspend_instance |
| | File \"/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py\", line 2519, in suspend |
| | File \"/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py\", line 489, in save_memory_state |
| | File \"/usr/lib/python2.7/site-packages/eventlet/tpool.py\", line 186, in doit |
| | result = proxy_call(self._autowrap, f, *args, **kwargs) |
| | File \"/usr/lib/python2.7/site-packages/eventlet/tpool.py\", line 144, in proxy_call |
| | rv = execute(f, *args, **kwargs) |
| | File \"/usr/lib/python2.7/site-packages/eventlet/tpool.py\", line 125, in execute |
| | six.reraise(c, e, tb) |
| | File \"/usr/lib/python2.7/site-packages/eventlet/tpool.py\", line 83, in tworker |
| | rv = meth(*args, **kwargs) |
| | File \"/usr/lib64/python2.7/site-packages/libvirt.py\", line 1404, in managedSave |
| | if ret == -1: raise libvirtError ('virDomainManagedSave() failed', dom=self) |
| | ", "created": "2018-03-15T07:13:38Z"}
This is because that the directory /etc/libivrt/qemu in pod contains vitual machines xml files and it is nonpersistent, the xmls files disappear after the pod restarts, so we mount it
to hostpath /etc/libvirt/qemu to make the directory persistent.
Fix proposed to branch: master
Review: https:/