[CentOS-virt] 3.18.21-16 upgrade, kernel panic, unable to mount root fs

Mon Nov 2 17:31:27 UTC 2015
PJ Welsh <pjwelsh at gmail.com>

This caused me an overnight issue on a secondary Xen server. I'm glad to
not be the only one to have the issue :)
I'm even more glad someone spotted the issue quickly. Thank you!

pjwelsh

On Sun, Nov 1, 2015 at 4:27 PM, Karel Hendrych <k+centosvirt at karlos.cz>
wrote:

> Indeed, a good catch. Module initramfs line was missing at 3.18.21 grub
> config.
>
> Thanks!
> --
> Karel
>
>
> On 1.11.2015 21:46, Sarah Newman wrote:
>
>> On 11/01/2015 12:07 PM, Karel Hendrych wrote:
>>
>>> Hi, just a heads-up: 3.18.21 didn't boot up on HP ML310e Gen8 v2, SATA
>>> drives in AHCI mode, / on software raid 1, no LVM. It ended up in kernel
>>> panic
>>> with unable to mount root fs. Attached. No difference in grub kernel/xen
>>> settings.
>>>
>>> I didn't investigate the things deeper so far. 4.4.3-3/3.18.17 is
>>> booting fine.
>>>
>>> Any similar experience?
>>>
>>
>> Check the module line for the initramfs is present in grub.conf. It's
>> gone missing in all our recent upgrades, but I wasn't sure if it was an
>> upstream
>> problem or our own.
>>
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