[ClusterLabs] Warning; EL6 kernel 2.6.32-754.28.1 breaks bonding!

[Digimer]

On 2020-06-23 5:59 p.m., Hayden,Robert wrote:
> 
>> -----Original Message-----
>> From: Users <users-bounces at clusterlabs.org> On Behalf Of Digimer
>> Sent: Monday, April 27, 2020 5:12 PM
>> To: Cluster Labs - Users <users at clusterlabs.org>
>> Subject: [ClusterLabs] Warning; EL6 kernel 2.6.32-754.28.1 breaks bonding!
>>
>> I've confirmed that active-passive bonding is very broken on the latest
>> EL6 kernel, 2.6.32-754.28.1. It works fine on 2.6.32-754.27.1 though.
>>
>> I've opened up an RHBZ (#1828604), but it's auto-set to private. Copy of
>> the bug is in CentOS #17292
>> (https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbug
>> s.centos.org%2Fview.php%3Fid%3D17292&data=02%7C01%7Crhayden
>> %40cerner.com%7C7e1191ac963a4ac80cea08d7eaf81a8b%7Cfbc493a80d2444
>> 54a815f4ca58e8c09d%7C0%7C0%7C637236223640212327&sdata=hVfkw
>> 7ovswop3QLqcoindEL8BB3zJF%2FEHlHWlWe8WbE%3D&reserved=0)
>>
>> In short, if you use bonding and have EL6 nodes, do not upgrade to .28,
>> and if you are already on .28, downgrade to .27.
> 
> Following up.   For all of us with clusters still using Linux 6.10 with active/backup bonding, the wait is over with the release of .30.2 kernel.
> 
> For Red Hat Enterprise Linux systems, see RHSA-2020:2430
> For Oracle Linux systems, see ELSA-2020-2430
> 
> We have tested this on HPE hardware with network switch port disablement.  Looks like the correction works.
> 
> Robert

I had tested it before the bug was closed successfully, and tested the
CentOS variant kernel as, as expected, it works fine as well.

digimer

>> Howto:
>>
>> # yum install kernel-2.6.32-754.27.1.el6.x86_64
>> kernel-devel-2.6.32-754.27.1.el6.x86_64
>> kernel-headers-2.6.32-754.27.1.el6.x86_64
>>
>> Edit '/boot/grub/grub.conf' (or '/boot/efi/EFI/redhat/grub.conf') and
>> change 'default=X' to the .27.1 kernel entry, reboot. After reboot,
>> remove .28.1;
>>
>> --
>> Digimer
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-- 
Digimer
Papers and Projects: https://alteeve.com/w/
"I am, somehow, less interested in the weight and convolutions of
Einstein’s brain than in the near certainty that people of equal talent
have lived and died in cotton fields and sweatshops." - Stephen Jay Gould