On Wed, Sep 6, 2017 at 9:16 AM, Henrik Korkuc <lists@xxxxxxxxx> wrote:
> On 17-09-06 09:10, Ashley Merrick wrote:
>
> I was just going by : docs.ceph.com/docs/master/start/os-recommendations/
>
>
> Which states 4.9
>
>
> docs.ceph.com/docs/master/rados/operations/crush-map
>
>
> Only goes as far as Jewel and states 4.5
>
>
> Not sure where else I can find a concrete answer to if 4.10 is new enough.
>
> Well, it looks like docs may need to be revisited as I was unable to use
> kcephfs on 4.9 with luminous before downgrading tunables, not sure about
> 4.10.
>
>
>
> ,Ashley
>
> ________________________________
> From: Henrik Korkuc <lists@xxxxxxxxx>
> Sent: 06 September 2017 06:58:52
> To: Ashley Merrick; ceph-users@xxxxxxxx
> Subject: Re: Luminous Upgrade KRBD
>
> On 17-09-06 07:33, Ashley Merrick wrote:
>
> Hello,
>
> Have recently upgraded a cluster to Luminous (Running Proxmox), at the same
> time I have upgraded the Compute Cluster to 5.x meaning we now run the
> latest kernel version (Linux 4.10.15-1) Looking to do the following :
>
> ceph osd set-require-min-compat-client luminous
This would effectively require 4.13 kernel for krbd and kcephfs.
You won't gain much by requiring luminous clients, so unless you have
a well-formulated reason to do it, I'd advise against it. That's also
the reason os-recommendations page still lists 4.9 -- it is the latest
jewel-compatible LTS kernel.
Thanks,
Ilya
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