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Re: [Libguestfs] [PATCH 0/4] v2v: simplify driver copying from virtio-win iso



On Thu, Oct 01, 2015 at 06:04:03PM +0300, Roman Kagan wrote:
> On Mon, Aug 10, 2015 at 06:55:28PM +0300, Roman Kagan wrote:
> > Libguestfs supports passing an ISO image as a source of virtio windows
> > drivers to v2v.
> > 
> > That support, however, looks too heavy-weight: in order to access those
> > drivers, a separate guestfs handle is created (and thus a new emulator
> > process is started), which runs until v2v completes.
> > 
> > This series attempts to make it simpler and lighter-weight, by making
> > the relevant code more local, and by hot-adding the image into the main
> > guestfs handle.
> > 
> > Roman Kagan (4):
> >   v2v: drop useless forced gc
> >   v2v: consolidate virtio-win file copying
> >   v2v: copy virtio drivers without guestfs handle leak
> >   v2v: reuse main guestfs for virtio win drivers iso
> > 
> >  v2v/convert_windows.ml | 184 ++++++++++++++++++++--------------------
> >  v2v/utils.ml           | 224 ++++++++++++++++---------------------------------
> >  v2v/v2v.ml             |   8 --
> >  3 files changed, 163 insertions(+), 253 deletions(-)
> 
> I just realized that, although (at least two of) these patches got
> "likely ACK", they are not in the libguestfs tree.
> 
> The patches still apply to master as of today.
> 
> Is there anything I can do to get them merged?

Actually better to post them again so I can review them again.

I spotted a few problems

- There's a missing pair of parentheses around the then clause in:

         g2#mount_ro "/dev/sda" vio_root;
         let paths = g2#find vio_root in
         Array.iter (
           fun path ->
             let source = vio_root // path in
             if ((g2#is_file source ~followsymlinks:false) &&
                 (match_vio_path_with_os path inspect.i_arch
                     inspect.i_major_version inspect.i_minor_version
                     inspect.i_product_variant)) then
                                                     ^^^

  which makes me think this code can't possibly work.

- Calling String.lowercase is unsafe (because the function is just
  broken in OCaml) and unnecessary.  Just remove it.

- (Stylistic) You don't need parentheses around if conditionals.

- (Stylistic) You don't need parentheses around the arguments of &&

- (Stylistic) You don't need parentheses around the arguments of //

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org


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