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20.12. Events Configuration
Using the following sections of domain XML it is possible to override the default actions taken on various events.
<on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <on_lockfailure>poweroff</on_lockfailure>
Figure 20.18. Events configuration
The following collections of elements allow the actions to be specified when a guest virtual machine OS triggers a life cycle operation. A common use case is to force a reboot to be treated as a poweroff when doing the initial OS installation. This allows the VM to be re-configured for the first post-install bootup.
The components of this section of the domain XML are as follows:
| State | Description |
|---|---|
<on_poweroff> | Specifies the action that is to be executed when the guest virtual machine requests a poweroff. Four possible arguments are possible:
|
<on_reboot> | Specifies the action that is to be executed when the guest virtual machine requests a reboot. Four possible arguments are possible:
|
<on_crash> | Specifies the action that is to be executed when the guest virtual machine crashes. In addition, it supports these additional actions:
|
<on_lockfailure> | Specifies what action should be taken when a lock manager loses resource locks. The following actions are recognized by libvirt, although not all of them need to be supported by individual lock managers. When no action is specified, each lock manager will take its default action. The following arguments are possible:
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