Re: [PATCH v2] docs/specs/tpm: Clarify command line parameters for network migration

[David Edmondson]

On Wednesday, 2021-10-13 at 23:27:00 -04, Stefan Berger wrote:

> Clarify the command line parameters for swtpm migration across the network
> for the case of shared storage and non-shared storage.
>
> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
> ---
>  docs/specs/tpm.rst | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/docs/specs/tpm.rst b/docs/specs/tpm.rst
> index 3be190343a..956f2c13dc 100644
> --- a/docs/specs/tpm.rst
> +++ b/docs/specs/tpm.rst
> @@ -482,7 +482,8 @@ VM migration across the network:
>   - QEMU command line parameters should be identical apart from the
>     '-incoming' option on the destination side
>  
> - - swtpm command line parameters should be identical
> + - swtpm command line parameters can be identical if storage is not
> +   shared and should be different for shared storage

I would interpret this as relating to the storage of the VM (virtual
disk devices), but you are referring to the storage used by swtpm,
presumably.

How about:

- typically, swtpm command line parameters should be different if the
  vTPM state directory is on shared storage, and should be the same if
  the vTPM state directory is not shared.

>  
>  VM Snapshotting:
>   - QEMU command line parameters should be identical