libvirt users - Sep 2021 - How to move emulated SWTPM data to a new VM

I have an existing VM with an emulated TPM module.

I'm trying to create a replacement VM, pointing to the same disk image that
the existing VM uses, and also migrate the existing TPM module to it.

Would just copying everything in /var/lib/libvirt/swtpm/<UUID> work? I did
some practice runs, and it seems that virt-manager immediately starts the  
new VM as soon as it creates one, so I need to quickly turn it off, go look  
up its new UUID, and copy over the TPM files?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20210923/ae0ae657/attachment.sig>

On Thu, Sep 23, 2021 at 08:32:46PM -0400, Sam Varshavchik
wrote:
> I have an existing VM with an emulated TPM module.
> 
> I'm trying to create a replacement VM, pointing to the same disk image
that
> the existing VM uses, and also migrate the existing TPM module to it.
> 
> Would just copying everything in /var/lib/libvirt/swtpm/<UUID> work?
I did
> some practice runs, and it seems that virt-manager immediately starts the
> new VM as soon as it creates one, so I need to quickly turn it off, go look
> up its new UUID, and copy over the TPM files?
When creating the VM in virt-manager, in the last step you can select a
checkbox 'Modify configuration before install'. When you do that you
will see the configuration dialog for the VM and there on the Overview
tab you can also find the UUID. I haven't tried that but that way you
may be able to create the TMP directory in advance.

Hope this helps,

    Tomas

-- 
Tom?? Golembiovsk? <tgolembi at redhat.com>