On Mon, May 4, 2015 at 11:46 AM, Florent B <florent@xxxxxxxxxxx> wrote:
> Hi,
>
> I would like to know which kernel version is needed to mount CephFS on a
> Hammer cluster ?
>
> And if we use 3.16 kernel of Debian Jessie, can we hope using CephFS for
> a few next release without problem ?
I would advice to run the latest released kernel, so 4.0 as of now.
You have to remember that in the case of krbd or kcephfs the kernel is
not just something that enables userspace applications to run, it *is*
the application. Why choose to run the latest version of component
A and then a year-old version of component B?
Note that if you enable hammer (i.e. "optimal") tunables you wouldn't
be able to mount cephfs with any released kernel - support for hammer
tunables is coming in 4.1.
Thanks,
Ilya
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