Re: [PATCH V2] migration: file URI

[Peter Xu]

Hi, Steve,

On Wed, Jun 07, 2023 at 11:38:59AM -0700, Steve Sistare wrote:
> Extend the migration URI to support file:<filename>.  This can be used for
> any migration scenario that does not require a reverse path.  It can be used
> as an alternative to 'exec:cat > file' in minimized containers that do not
> contain /bin/sh, and it is easier to use than the fd:<fdname> URI.  It can
> be used in HMP commands, and as a qemu command-line parameter.

I have similar question on the fixed-ram work, on whether we should assume
the vm stopped before doing so.  Again, it leaves us space for
optimizations on top without breaking anyone.

The other thing is considering a very busy guest, migration may not even
converge for "file:" URI (the same to other URIs) but I think that doesn't
make much sense to not converge for a "file:" URI.  The user might be very
confused too.

-- 
Peter Xu