[CentOS] write barrier support in CentOS 6

[Alexandru Chiscan]

On 04/01/2014 06:27 AM, Keith Keller wrote:
> On 2014-04-01, Tom Robinson <tom.robinson at motec.com.au> wrote:
>> Now, I understand that Red Hat (and therefore CentOS) backport many upstr=
>> eam features into the stock
>> kernel so how can I be sure that kernel 2.6.32-431.11.2.el6 has write bar=
>> rier support?
Take a look here:
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/writebarrieronoff.html

Regards,
Lec
> I believe you can look through the RHEL tech notes.  Here they are for
> 6.5:
>
> https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/6.5_Technical_Notes/index.html
>
> If you require barriers, you can always use the mainline kernel from
> elrepo.  You can read about the mainline and long-term packages here:
>
> http://elrepo.org/tiki/kernel-lt
>
> You probably want the kernel-ml packages, but that page doesn't mention
> the -lt packages.  Lots of CentOS admins use these kernels (including
> me) and are happy with them.
>
> --keith
>


-- 
Lec