Re: [Qemu-devel] [PATCH v2 2/3] block: add block-backup QMP command

[Kevin Wolf <kwolf@redhat.com>]

Am 11.05.2013 um 05:34 hat Eric Blake geschrieben:
> On 05/08/2013 06:49 AM, Kevin Wolf wrote:
> > Am 29.04.2013 um 09:42 hat Stefan Hajnoczi geschrieben:
> >> @block-backup
> >>
> 
> > drive-backup would probably be a more consistent naming. We would then
> > still have block-backup for a future low-level command that doesn't
> > create everything by itself but takes an existing BlockDriverState (e.g.
> > created by blockdev-add).
> 
> At least it would match why we named a command 'drive-mirror' instead of
> 'block-mirror'.
> 
> Hmm, looking at qapi-schema.json, I wonder if we can rename
> 'BlockdevAction' to 'TransactionAction' as used in the @transaction
> command.  It wouldn't change what is sent over the wire in JSON, and
> until we have full introspection, there is no visibility into the type
> name used.  Changing the name now would let it be more generic to adding
> future transaction items that are not blockdev related.

Good point, I never realised that once we have schema introspection,
doing such changes is harder. I'm all for it - it's bad enough that we
have specifically block jobs instead of just background jobs, we
shouldn't repeat the same mistake with transactions.

Kevin