If you're using CentOS/RHEL you can try the elrepo kernels

Mike Kuriger 



-----Original Message-----
From: ceph-users [mailto:[email protected]] On Behalf Of John 
Spray
Sent: Monday, July 23, 2018 5:07 AM
To: Bryan Henderson
Cc: [email protected]
Subject: Re: [ceph-users] Cephfs kernel driver availability

On Sun, Jul 22, 2018 at 9:03 PM Bryan Henderson <[email protected]> wrote:
>
> Is there some better place to get a filesystem driver for the longterm
> stable Linux kernel (3.16) than the regular kernel.org source distribution?

The general advice[1] on this is not to try and use a 3.x kernel with
CephFS.  The only exception is if your distro provider is doing
special backports (latest RHEL releases have CephFS backports).  This
causes some confusion, because a number of distros that have shipped
"stable" kernels with older, known unstable CephFS code.

If you're building your own kernels then you definitely want to be on
a recent 4.x

John

1. 
https://urldefense.proofpoint.com/v2/url?u=http-3A__docs.ceph.com_docs_master_cephfs_best-2Dpractices_-23which-2Dkernel-2Dversion&d=DwICAg&c=5m9CfXHY6NXqkS7nN5n23w&r=5r9bhr1JAPRaUcJcU-FfGg&m=1d2qC0CtsbiZASGIWepKvVV0aMaJAXZZmg2_NDncscw&s=nAbQCNqk5k58F3w1fk-APMYb49ODP3WlGtdkQNjwU4Q&e=

> The reason I ask is that I have been trying to get some clients running
> Linux kernel 3.16 (the current long term stable Linux kernel) and so far
> I have run into two serious bugs that, it turns out, were found and fixed
> years ago in more current mainline kernels.
>
> In both cases, I emailed Ben Hutchings, the apparent maintainer of 3.16,
> asking if the fixes could be added to 3.16, but was met with silence.  This
> leads me to believe that there are many more bugs in the 3.16 cephfs
> filesystem driver waiting for me.  Indeed, I've seen panics not yet explained.
>
> So what are other people using?  A less stable kernel?  An out-of-tree driver?
> FUSE?  Is there a working process for getting known bugs fixed in 3.16?
>
> --
> Bryan Henderson                                   San Jose, California
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