Re: [Qemu-devel] Re: [PATCH 0/5] Add "info capabilities" monitor command

[Mark McLoughlin <markmc@redhat.com>]

On Fri, 2008-11-14 at 03:51 +0000, Jamie Lokier wrote:

> If it's "wrong" the first time, well, there are other features in QEMU
> which have changed incompatibly between versions.  Imho, there's no
> great harm in changing "info capability" output until it's right,
> provided the basic syntax unambiguously represents the QEMU version
> and capability text format version somehow.

Well, the goal here is to have something actually usable by management
tools and an in-flux format wouldn't help that.

But yeah, we should agree on enough of the basic details of the format
to allow a format version to be exposed.

> While we're at it, a section describing the monitor's capabilities so
> we don't have to parse the _monitor's_ "help" output....  Oh, there I
> go bike-shedding again :-)

Well, if "info capabilities" isn't implemented, simply having it fail is
fine.

That's a bit different from e.g. libvirt launching qemu with
cache=writethrough, detecting that qemu doesn't support that and
relaunching without it.

Cheers,
Mark.