Split apart pick_geometry by creating a pick_drive routine that will only
ever called during device bring-up instead of relying on pick_geometry to
be used in both cases.
With this change, the drive field is changed to be 'write once'. It is
not altered after the initialization routines exit.
media_validated does not need to be migrated. The target VM
will just revalidate the media on post_load anyway.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1453495865-9649-7-git-send-email-jsnow@redhat.com
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