Also, this is the same as some HMP commands' "-n" option (live
snapshots, mirroring, backup) so I suggest to use that name.
You mean -n instead of -C? Sure I can do that, but is that
something you feel strongly about? I am aware there are a number
of people who have been using the patch with -C for some time.
I'll be fine if Stefan and Kevin override me, but yes, I think
consistency is important. qemu-img has offline functionality equivalent
to block jobs, and it is useful to keep qemu-img subcommands as
consistent as possible between them and with the corresponding HMP
commands. convert is the equivalent of the online mirroring block job.