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

Sun Nov 1 20:46:51 UTC 2015
Sarah Newman <srn at prgmr.com>

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.