[CentOS-virt] Kernel 3.18.21-17 and 3.18.21-18 kernel panics
George Dunlap
dunlapg at umich.edu
Mon Feb 22 12:39:51 UTC 2016
On Mon, Feb 22, 2016 at 6:35 AM, Sarah Newman <srn at prgmr.com> wrote:
> On 02/21/2016 08:02 PM, Shaun Reitan wrote:
>> I've seen this issue on about 15 different servers now. Anybody else seeing this?
>>
>> Screenshot: http://imgur.com/cBcwr8l
>>
>> I also have a video of the boot process if that will be helpful.
>
> Are you missing the initrd line in /boot/grub/menu.lst? That's a known bug that I believe has been fixed with 3.18.25-something.
"Can't find rootfs" is most likely the missing initrd bug, which is
fixed in centos-release-xen-7-12 or later.
You can:
1. Manually add the initrd line to the xen stanza in /boot/grub/menu.lst, or
2. Upgrade to centos-release-xen-7-12 or later, and then
2a. Run grub-bootxen.sh manually, or
2b. Update the kernel (which will cause grub-bootxen.sh to be run
automatically).
Peace,
-George
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