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

[Digimer]

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://bugs.centos.org/view.php?id=17292)

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.

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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