How to find out maximum supported op-version of glusterd in runtime

[Pavel Malyshev <p.malishev@xxxxxxxxx>]

Hello!

I use gluster for quite a long time and even survived a bunch of upgrades..

Each time I upgrade, since "op-version" was introduced I scratch my head and google a bit to find out which "op-version" should I set to my cluster.

I tried to convert current gluster package version to op-version, like 3.7.1 to 30701, but it didn't work with 3,5&3.6 patches and some 3.7 patches (like 3.7.9, 3.7.11, etc).
Last few times I had to download latest gluster sources and grep for 'GD_OP_VERSION' to find out the new value, which is not user friendly (or completely user unfriendly?).

I have an automated system to deploy and upgrade gluster clusters, but till now I had to spend precious time to find out actual version value and set it manually...

So my question is there any way to get the maximum supported op-version of installed glusterd daemon (not cluster version) via cli?

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