[elrepo] kmod-e1000e

[Steve Clark]

On 09/17/2013 07:40 AM, Phil Perry wrote:
> On 17/09/13 12:08, Steve Clark wrote:
>> Hello list,
>>
>> If I am using the kmod-e1000e driver and upgrade to the next kernel will
>> the
>> kmod-e1000e driver still be used or do I have to reinstall it. The
>> kmod-e1000e
>> driver fixes this issue:
>> http://www.spinics.net/lists/netdev/msg244462.html
>>
>>
>> Thanks,
>> Steve
>>
>>
> Hi Steve,
>
> In the vast majority of cases the kmod driver will continue to work
> seamlessly across kernel updates.
>
> It is possible that changes to the kernel ABI between point updates (for
> example, between 6.3 and 6.4 kernels) could cause a kmod driver to fail,
> but this is relatively rare. If that does happen then in the vast
> majority of cases simply rebuilding the kmod driver package against the
> latest kernel will resolve the issues in which case a bug report to
> elrepo.org/bugs will get the issue resolved pretty quickly.
>
> So either way, you shouldn't ever need to reinstall it.
>
> You can test the process for yourself. Generally, if the module weak
> links against the new kernel then it should work. So, once you have
> installed the new kernel, try:
>
> find /lib/modules/ -name e1000e.ko | grep 'weak\|extra'
>
> the module was built against and installed to the "extra" directory, and
> is compatible with all installed kernels where it is symlinked into the
> "weak-updates" directories.
>
> Here is an example of this from my EL5 system for the coretemp.ko module:
>
> $ find /lib/modules/ -name coretemp.ko | grep 'weak\|extra'
> /lib/modules/2.6.18-308.el5/weak-updates/coretemp/coretemp.ko
> /lib/modules/2.6.18-348.el5/weak-updates/coretemp/coretemp.ko
> /lib/modules/2.6.18-238.el5/extra/coretemp/coretemp.ko
> /lib/modules/2.6.18-348.16.1.el5/weak-updates/coretemp/coretemp.ko
> /lib/modules/2.6.18-274.el5/weak-updates/coretemp/coretemp.ko
> /lib/modules/2.6.18-194.el5/weak-updates/coretemp/coretemp.ko
>
> so, if I were running 5.8 and had just installed the 5.9 kernel
> (2.6.18-348.el5), the above output would indicate the driver should be
> compatible (which indeed it is).
>
> Hope that helps,
>
> Phil
>
> Note: elrepo kmod packages are *not* compatible with elrepo kernel-ml
> and kernel-lt offerings.
>
Hi Phil,

Thanks for the info. It does look like it should work:

$ find /lib/modules/ -name e1000e.ko | grep 'weak\|extra'
/lib/modules/2.6.32-358.11.1.el6.centos.plus.i686/weak-updates/e1000e/e1000e.ko
/lib/modules/2.6.32-279.el6.i686/extra/e1000e/e1000e.ko

When we upgrade I'll verify the we are still using the kmod-e1000e driver.


-- 
Stephen Clark
*NetWolves*
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com
http://www.netwolves.com
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