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Re: [PATCH V2 1/7] block/rbd: bump librbd requirement to luminous releas

From: Peter Lieven
Subject: Re: [PATCH V2 1/7] block/rbd: bump librbd requirement to luminous release
Date: Mon, 15 Feb 2021 12:45:01 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

Am 15.02.21 um 12:41 schrieb Daniel P. Berrangé:
On Mon, Feb 15, 2021 at 12:32:24PM +0100, Peter Lieven wrote:
Am 15.02.21 um 11:24 schrieb Daniel P. Berrangé:
On Tue, Jan 26, 2021 at 12:25:34PM +0100, Peter Lieven wrote:
even luminous (version 12.2) is unmaintained for over 3 years now.
Bump the requirement to get rid of the ifdef'ry in the code.
We have clear rules on when we bump minimum versions, determined by
the OS platforms we target:


At this time RHEL-7 is usually the oldest platform, and it
builds with RBD 10.2.5, so we can't bump the version to 12.2.

I'm afraid this patch has to be dropped.

I have asked exactly this question before I started work on this series and got 

from Jason that he sees no problem in bumping to a release which is already 

for 3 years.
I'm afraid Jason is wrong here.  It doesn't matter what the upstream
consider the support status to be. QEMU targets what the OS vendors
ship, and they still consider this to be a supported version.

Okay, but the whole coroutine stuff would get a total mess with all the 

Would it be an option to make a big ifdef in the rbd driver? One with old code for 
< 12.0.0 and one

with new code for >= 12.0.0?


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