| 1 | <?xml version='1.0' encoding='UTF-8'?>
|
|---|
| 2 | <!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
|
|---|
| 3 | <topic xml:lang="en-us" id="hostpowertweaks">
|
|---|
| 4 | <title>Handling of Host Power Management Events</title>
|
|---|
| 5 |
|
|---|
| 6 | <body>
|
|---|
| 7 | <p>
|
|---|
| 8 | Some host power management events are handled by <ph conkeyref="vbox-conkeyref-phrases/product-name"/>.
|
|---|
| 9 | The actual behavior depends on the platform:
|
|---|
| 10 | </p>
|
|---|
| 11 | <ul>
|
|---|
| 12 | <li>
|
|---|
| 13 | <p><b outputclass="bold">Host Suspends.</b> This event is generated when the host is about
|
|---|
| 14 | to suspend, that is, the host saves the state to some nonvolatile storage and powers off. </p>
|
|---|
| 15 | <p>
|
|---|
| 16 | This event is currently only handled on Windows hosts and Mac
|
|---|
| 17 | OS X hosts. When this event is generated, <ph conkeyref="vbox-conkeyref-phrases/product-name"/> will
|
|---|
| 18 | pause all running VMs.
|
|---|
| 19 | </p>
|
|---|
| 20 | </li>
|
|---|
| 21 | <li>
|
|---|
| 22 | <p><b outputclass="bold">Host Resumes.</b> This event is
|
|---|
| 23 | generated when the host woke up from the suspended state.
|
|---|
| 24 | </p>
|
|---|
| 25 | <p>
|
|---|
| 26 | This event is currently only handled on Windows hosts and Mac
|
|---|
| 27 | OS X hosts. When this event is generated, <ph conkeyref="vbox-conkeyref-phrases/product-name"/> will
|
|---|
| 28 | resume all VMs which are where paused before.
|
|---|
| 29 | </p>
|
|---|
| 30 | </li>
|
|---|
| 31 | <li>
|
|---|
| 32 | <p><b outputclass="bold">Battery Low.</b> The battery
|
|---|
| 33 | level reached a critical level, usually less than 5 percent
|
|---|
| 34 | charged.
|
|---|
| 35 | </p>
|
|---|
| 36 | <p>
|
|---|
| 37 | This event is currently only handled on Windows hosts and Mac
|
|---|
| 38 | OS X hosts. When this event is generated, <ph conkeyref="vbox-conkeyref-phrases/product-name"/> will
|
|---|
| 39 | save the state and terminate all VMs in preparation of a
|
|---|
| 40 | potential host powerdown.
|
|---|
| 41 | </p>
|
|---|
| 42 | <p>
|
|---|
| 43 | The behavior can be configured. By executing the following
|
|---|
| 44 | command, no VM is saved:
|
|---|
| 45 | </p>
|
|---|
| 46 | <pre xml:space="preserve">$ VBoxManage setextradata global "VBoxInternal2/SavestateOnBatteryLow" 0</pre>
|
|---|
| 47 | <p>
|
|---|
| 48 | This is a global setting as well as a per-VM setting. The
|
|---|
| 49 | per-VM value has higher precedence than the global value. The
|
|---|
| 50 | following command will save the state of all VMs but will not
|
|---|
| 51 | save the state of VM "foo":
|
|---|
| 52 | </p>
|
|---|
| 53 | <pre xml:space="preserve">$ VBoxManage setextradata global "VBoxInternal2/SavestateOnBatteryLow" 1
|
|---|
| 54 | $ VBoxManage setextradata "foo" "VBoxInternal2/SavestateOnBatteryLow" 0</pre>
|
|---|
| 55 | <p>
|
|---|
| 56 | The first line is actually not required as by default the
|
|---|
| 57 | savestate action is performed.
|
|---|
| 58 | </p>
|
|---|
| 59 | </li>
|
|---|
| 60 | </ul>
|
|---|
| 61 | </body>
|
|---|
| 62 |
|
|---|
| 63 | </topic>
|
|---|
