[Users] NVMe and Virtuozzo 7

[Konstantin Khorenko]

https://itpeernetwork.intel.com/nvm-express-linux-driver-support-decoded/

"Red Hat Enterprise Linux (RHEL):

NVMe SSDs have been supported since RHEL 6.5. With the introduction of kernel 3.10 in RHEL 7, support for booting from NVMe was added. RHEL 7.1 becomes even more capable with hot 
plug features that were added in by Red Hat."

--
Best regards,

Konstantin Khorenko,
Virtuozzo Linux Kernel Team

On 08/26/2016 03:19 PM, Konstantin Khorenko wrote:
> Hi Nick,
>
> i'm not sure i fully understand which exact latest changes in NVMe driver your are talking about =>
> assuming you are right and RedHat has not backported some changes yet that you need.
>
> As well i don't know what performance issues you are taking about.
> Brief googling brought me to https://access.redhat.com/solutions/1269473
> But there is quite a good workaround and it does not require driver update.
>
> BTW, driver version in RHEL7 kernel (in case you have not checked):
> # modinfo nvme
> filename:       /lib/modules/3.10.0-327.22.2.vz7.16.2/kernel/drivers/block/nvme.ko
> version:        1.0
>
>
> So, in case you've really checked that you need a new driver (this means - have a test which works on your hardware slow on RHEL7 kernel and works fast on some other kernel
> (mainstream?)), well, just try to compile new driver against Virtuozzo 7 kernel - and that's it.
>
> We do not touch NVMe driver in Virtuozzo patchset => our changes should not prevent the compilation.
>
> Good luck.
>
> --
> Best regards,
>
> Konstantin Khorenko,
> Virtuozzo Linux Kernel Team
>
> On 08/24/2016 02:35 AM, Nick Knutov wrote:
>>
>> As far as I understand - Virtuozzo 7 kernel DOES NOT contain latest NVMe
>> driver and RHEL 7 kernel has some speed problerms with NVMe.
>>
>> Are there any official recomendations or suggestions from Openvz team?
>>