How to fill in the fsid for file systems?

[Konstantin Belousov]

On Mon, Oct 29, 2018 at 03:56:02PM +0000, Rick Macklem wrote:
> Hi,
> 
> I have been working with Josh Paetzel on a patch to add support for
> the "fsid=N" option (like what Linux has) to /etc/exports. (It is used
> to ensure that the fsid for a file system doesn't change when migrated
> to a different machine, so that file handles don't change.)
Why do you consider this an option for exports file and not for nmount(2)
and fstab ?  Do you intend to mangle fsid for mount protocol only ?