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NEWS: Update with description of changes to lifecycle action handling

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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
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Peter Krempa 2021-08-25 11:50:08 +02:00 committed by Jiri Denemark
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NEWS.rst
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@ -45,6 +45,36 @@ v7.7.0 (unreleased)
The genid attribute is now reported for VMX guests. Libvirt can now
properly process super wide SCSI bus (64 units).
* qemu: Lifecycle action (``on_poweroff``/``on_reboot``) handling improvements
The handling of lifecycle actions was fixed and improved in multiple ways:
- ``restart-rename`` action was forbidden
The action was never properly implemented in the qemu driver and didn't
actually result in a restart of the VM but rather termination. The qemu
driver now rejects such configurations.
- ``preserve`` action was forbidden
Similarly to the previous case this never worked as the intended semantics
of the actions dictate. It's better to not allow it at all until there's a
proper implementation
- ``reboot`` action of ``on_poweroff`` now actually works
The guest OS is now rebooted instead of terminating the VM when the
``reboot`` action is used and the guest OS powers down. Note that it's
incompatible with ``on_reboot`` set to ``destroy``.
- Changes in action action of ``on_reboot`` are now updated with qemu
Libvirtd can now properly update the ``on_reboot`` action in qemu which
allows proper handling when changing between ``reboot`` and ``destroy``
actions. In addition, switching from ``reboot`` to ``destroy`` was
forbidden for older qemus which don't support the update API as the guest
could still reboot and execute some instructions until it was terminated.
* **Bug fixes**
* qemu: Open chardev logfile on behalf of QEMU