Re: [PATCH v4 5/5] block: Deprecate transaction type drive-backup

25.10.2021 07:24, Markus Armbruster wrote: > Several moons ago, Vladimir posted > > Subject: [PATCH v2 3/3] qapi: deprecate drive-backup > Date: Wed, 5 May 2021 16:58:03 +0300 > Message-Id:<20210505135803.67896-4-vsementsov@virtuozzo.com> > https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg01394.html > > with this > > TODO: We also need to deprecate drive-backup transaction action.. > But union members in QAPI doesn't support 'deprecated' feature. I tried > to dig a bit, but failed :/ Markus, could you please help with it? At > least by advice? > > This is one way to resolve it. Sorry it took so long. > > John explored another way, namely adding feature flags to union > branches. Could also be useful, say to add different features to > branches in multiple unions sharing the same tag enum. > > Signed-off-by: Markus Armbruster&lt;armbru(a)redhat.com&gt; Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov(a)virtuozzo.com&gt; (with simplified commit message of course :)