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

From: Vladimir Sementsov-Ogievskiy
Subject: Re: [PATCH v4 5/5] block: Deprecate transaction type drive-backup
Date: Wed, 3 Nov 2021 16:40:00 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0

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

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<armbru@redhat.com>

Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

(with simplified commit message of course :)

Best regards,

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