Thanks a lot
So, if I am using ceph just to provide block storage to an OpenStack cluster (so using libvirt), the kernel version on the client nodes shouldn't matter, right ?
Thanks again, Massimo
On Mon, Feb 4, 2019 at 10:02 AM Ilya Dryomov <idryomov@xxxxxxxxx> wrote:
On Mon, Feb 4, 2019 at 9:25 AM Massimo Sgaravatto
<massimo.sgaravatto@xxxxxxxxx> wrote:
>
> The official documentation [*] says that the only requirement to use the balancer in upmap mode is that all clients must run at least luminous.
> But I read somewhere (also in this mailing list) that there are also requirements wrt the kernel.
> If so:
>
> 1) Could you please specify what is the minimum required kernel ?
4.13 or CentOS 7.5. See [1] for details.
> 2) Does this kernel requirement apply only to the OSD nodes ? Or also to the clients ?
No, only to the kernel client nodes. If the kernel client isn't used,
there is no requirement at all.
[1] http://lists.ceph.com/pipermail/ceph-users-ceph.com/2018-May/027002.html
Thanks,
Ilya
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