grub2 boot failure when adding disks

[Alex Regan]

Hi,

On 05/07/2015 02:24 PM, Fred Smith wrote:
> On Thu, May 07, 2015 at 01:52:58PM -0400, Tom Horsley wrote:
>> On Thu, 07 May 2015 13:42:01 -0400
>> Alex Regan wrote:
>>
>>> Thanks for any ideas.
>>
>> I also had big problems when trying to boot after adding a
>> new raid (which shouldn't have been involved in the boot
>> process at all). I never figured out exactly what the
>> problem was for sure, but at some point I booted the
>> system on a live CD, chrooted into the actual root,
>> and did a yum update which installed (among other things)
>> a new kernel, and I was able to boot OK after that.
>>
>> Either the initramfs was missing a module it needed
>> to talk to the raid, or maybe the grub.cfg was missing
>> a load of a module it needed. Not sure which, but the
>> installing of a new kernel fixed whatever it was.
>
> new kernel would enforce the building of a new initrd,
> wouldn't it?
>
> perhaps that's all the OP needs to do to solve his problem...

Yes, that's certainly a possibility, but nothing new was introduced. 
RAID1 was already there because the root is RAID1.

The server is back in the colo, so I wonder if I could reproduce it 
locally here before making the drive (no pun intended, lol).

Thanks,
Alex