Changes Made via “virsh edit”

[dya]

Is directly modifying a virtual machine definition (XML) using “virsh edit” an acceptable practice for HVM?

Since I can’t make detailed changes via the Web UI, I’m considering using “virsh edit.” However, I’ve noticed that changes made with “virsh edit” sometimes get reverted when I run the reconfigure menu or similar operations.

I’d also like to know which changes are preserved and which are not—do you happen to know?

*Please note that this is machine translation, so I apologize if it’s unclear.

[DiegoDelgado]

We recommend against making any changes using "virsh edit" because the Morpheus Manager enforces the XML configuration after some operations are done. Examples of such operations could be linked to live migrating a VM or simply power cycling it.

The manager doesn't change every aspect of the XML, for example setting a manual MAC address is not changed.

What type of changes have you found to be reverted?

[dya]

Thank you.

I had made the following changes, but they reverted when I changed the virtual machine plan.

■Changes made using `virsh edit`
<sound model='ac97'>
↓
<sound model='ich9'>

[jayst136]

so, if it's not supported/practical to run virsh edit. What's the supported way to edit the xml? persistently?

[DiegoDelgado]

There's no supported way to edit the VMs XML, if the change doesn't persist and it's not something present in the UI, there's no guarantee the change will persist.

What are the use cases you're looking at? I see the Audio device example, but why is something like this needed?

Asking so we can analyze the use cases and make informed decisions