[ceph-users] CephFS kernel client versions - pg-upmap

Stefan Kooman stefan at bit.nl
Thu Nov 8 05:15:22 PST 2018


Quoting Ilya Dryomov (idryomov at gmail.com):
> On Sat, Nov 3, 2018 at 10:41 AM <jesper at krogh.cc> wrote:
> >
> > Hi.
> >
> > I tried to enable the "new smart balancing" - backend are on RH luminous
> > clients are Ubuntu 4.15 kernel.
[cut]
> > ok, so 4.15 kernel connects as a "hammer" (<1.0) client?  Is there a
> > huge gap in upstreaming kernel clients to kernel.org or what am I
> > misreading here?
> >
> > Hammer is 2015'ish - 4.15 is January 2018'ish?
> >
> > Is kernel client development lacking behind ?
> 
> Hi Jesper,
> 
> There are four different groups of clients in that output.  Which one
> of those four is the kernel client?  Are you sure it's just the hammer
> one?

I'm pretty sure it isn't. I'm trying to do the same (force luminous
clients only) but ran into the same issue. Even when running 4.19 kernel
it's interpreted as a jewel client. Here is the list I made so far:

Kernel 4.13 / 4.15:
            "features": "0x7010fb86aa42ada",
                        "release": "jewel"

kernel 4.18 / 4.19
             "features": "0x27018fb86aa42ada",
                         "release": "jewel"

I have tested both Ubuntu as CentOS mainline kernels.  I came accross
this issue made by Sage [1], which is resolved, but which looks similiar
to this.

Gr. Stefan

[1]: https://tracker.ceph.com/issues/20475

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