Add "console type=pty" to HVM domain configuration

[kitambi]

Qubes OS version (e.g., R3.2):

4.0rc1

Affected TemplateVMs (e.g., fedora-23, if applicable):

All HVM

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Expected behavior:

"xl console" connects to the VM's console

Actual behavior:

xenconsole: Could not read tty from store: No such file or directory

Steps to reproduce the behavior:

Run "sudo xl console <hvm_domain>"

General notes:

We can avoid the overhead of the "debug mode" virtual VGA console by adding this option, and also setting up HVM templates with serial consoles. It's also convenient when you're troubleshooting a template that you're hacking on, because a reboot won't be required to get onto the console.

Related issues:

[marmarek]

You can use sudo xl console -t pv <hvm_domain> for this. Appropriate device is set already. Unfortunately it isn't possible to change default behavior of xl console (-t pv option) from domain config.

Bonus: even without debug mode, you can access VGA console with qvm-start-gui --force-stubdomain VMNAME

[marmarek]

You can use sudo xl console -t pv <hvm_domain> for this. Appropriate device is set already. Unfortunately it isn't possible to change default behavior of xl console (-t pv option) from domain config.

Bonus: even without debug mode, you can access VGA console with qvm-start-gui --force-stubdomain VMNAME