Re: How to exit console in L2 vm?

2020-11-29 Thread Peter Krempa
On Mon, Nov 30, 2020 at 14:50:33 +0800, Yalan Zhang wrote:
> Hi,
> 
> I have a question about nested virtualization. The scenario is as below:
> 1. Prepare the nested environment, start L2 guest.
> 2. On the host, connect the L1 vm console, then on L1 guest, connect the L2
> guest console:
> (host)# virsh console L1_vm
> Connected to domain L1_vm
> Escape character is ^] (Ctrl + ])
> ...
> (L1 vm)# virsh console L2_vm
> Connected to domain L2_vm
> Escape character is ^] (Ctrl + ])
> ...
> (L2 vm)# <=== press " ^] " to exit the console, it return to the **host**
> (host)#
> 
> Is it expected that "^]" in L2 guest will exit thoroughly to the host, not
> the L1 guest?

Yes it is expected since the keystroke goes through L1 first.

You can use the '-e' switch of virsh to set the console escape character
in one of the clients differently:

$ virsh -e '^[' console 1
Connected to domain fedora32
Escape character is ^[ (Ctrl + [)



Re: How to exit console in L2 vm?

2020-11-29 Thread Pavel Hrdina
On Mon, Nov 30, 2020 at 02:50:33PM +0800, Yalan Zhang wrote:
> Hi,
> 
> I have a question about nested virtualization. The scenario is as below:
> 1. Prepare the nested environment, start L2 guest.
> 2. On the host, connect the L1 vm console, then on L1 guest, connect the L2
> guest console:
> (host)# virsh console L1_vm
> Connected to domain L1_vm
> Escape character is ^] (Ctrl + ])
> ...
> (L1 vm)# virsh console L2_vm
> Connected to domain L2_vm
> Escape character is ^] (Ctrl + ])
> ...
> (L2 vm)# <=== press " ^] " to exit the console, it return to the **host**
> (host)#
> 
> Is it expected that "^]" in L2 guest will exit thoroughly to the host, not
> the L1 guest?
> Thank you!

Hi,

With virsh you can configure different escape character.

It could look like this for example:

On host you would run:

virsh console L1_vm


and in the L1 VM you would run this:

virsh -e ^[ console L2_vm


For more info check the virsh man page.

Pavel


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How to exit console in L2 vm?

2020-11-29 Thread Yalan Zhang
Hi,

I have a question about nested virtualization. The scenario is as below:
1. Prepare the nested environment, start L2 guest.
2. On the host, connect the L1 vm console, then on L1 guest, connect the L2
guest console:
(host)# virsh console L1_vm
Connected to domain L1_vm
Escape character is ^] (Ctrl + ])
...
(L1 vm)# virsh console L2_vm
Connected to domain L2_vm
Escape character is ^] (Ctrl + ])
...
(L2 vm)# <=== press " ^] " to exit the console, it return to the **host**
(host)#

Is it expected that "^]" in L2 guest will exit thoroughly to the host, not
the L1 guest?
Thank you!


---
Best Regards,
Yalan Zhang
IRC: yalzhang