[elrepo] CentOS/Kernel 3.18/Thunderbolt2

[Israel Brewster]

On Jan 26, 2015, at 10:11 AM, Alan Bartlett <ajb at elrepo.org> wrote:

> On 26 January 2015 at 18:55, Israel Brewster <israel at ravnalaska.net> wrote:
>> On Jan 26, 2015, at 6:38 AM, Alan Bartlett <ajb at elrepo.org> wrote:
>> 
>>> On 26 January 2015 at 01:25, israel <israel at ravnalaska.net> wrote:
>>>> I just got a new SuperMicro box with a AOC-TBT-DSL5320 Thunderbolt2 card
>>>> pre-installed. I installed CentOS 6.5, ran yum update, and then, because to
>>>> my understanding at least, thunderbolt support was added in kernel 3.10, I
>>>> went ahead and updated to kernel 3.18 from ELRepo. This all appeared to work
>>>> fine, and my system came back up running kernel 3.18 as expected, but when I
>>>> plugged in a thunderbolt hard drive there was no indication that CentOS
>>>> recognized the drive - even after a re-boot. Am I missing something, such as
>>>> needing to install a special driver for this thunderbolt card, or the drive
>>>> being identified differently than sd? Or does Linux/CentOS simply not
>>>> support Thunderbolt2? Thanks.
>>> 
>>> Am I correct in assuming that the Thunderbolt2 card is a PCI bus
>>> device? If so, what are the relevant lines that are output by a lspci
>>> -nn command?
>> 
>> Yeah, the thunderbolt2 card plugs into a PCI slot, as well as having a cable running to the GPIO headers on the motherboard. That said, nothing jumps out at me from the output of that command. There are a number of references to a PCI bridge, a Core i7 I/O APIC, ISA bridge [0601]: Intel Corporation C610/X99 series chipset LPC Controller, and a generic "Intel Corporation Device" system peripheral, but other than that it looks like most of the things listed are not relevant.
>> 
>> I did find reference to running an egrep on the /boot/config-3.18.3-1.el6.elrepo.x86_64 file, which returns the line "CONFIG_THUNDERBOLT is not set", however, which would seem to indicate that the ELRepo kernel build is simply not compiled with Thunderbolt support. So I may just have to try compiling the kernel myself or the like. Dunno.
> 
> No, please don't bother about compiling a kernel yourself.
> 
> I strongly suspect that there will be new source tarballs available
> from the LKA on either Wednesday or Thursday of this week. As a
> consequence I shall be building new kernel-{lt|ml} package sets for
> EL6 and EL7.
> 
> So as long as I remember to take a look at the configuration files,
> the next kernels we release will have Thunderbolt support enabled.

Awesome, thanks! I'll keep an eye out. Are the releases announced here/elsewhere, or should I just check yum update periodically? Thanks again!
-----------------------------------------------
Israel Brewster
Systems Analyst II
Ravn Alaska
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7293
-----------------------------------------------


> 
> Alan.
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