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we have rhel 7.2 server on DELL HW

we upgrade the kernel version to version 3.10.0-693.el7 from previews that was 3.10.0-327.el7

and we did reboot in order to start the rhel with new kernel version

during boot we select the kernel enter image description here

but some seconds after this machine was stuck on CNTR D , and machine not started

so we reboot the machine again and select the previous kernel version from the BAR - 3.10.0-327.el7

now machine is up with the old kernel version

I dont sure about this

but is this problem is happens because we not performed the following steps - 1,2

step 1

grub2-set-default 0

note - the list of the kernel are:

awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg
Red Hat Enterprise Linux Server (3.10.0-693.el7.x86_64) 7.2 (Maipo)
Red Hat Enterprise Linux Server (3.10.0-1127.el7.x86_64) 7.2 (Maipo)
Red Hat Enterprise Linux Server (3.10.0-327.el7.x86_64) 7.2 (Maipo)
Red Hat Enterprise Linux Server (0-rescue-f3da2dd526e445deadee0bd875b6a246) 7.2 (Maipo)

and then

step 2

grub2-mkconfig -o /boot/grub2/grub.cfg

1 Answer 1

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Request support from RedHat. You're most likely looking at a kernel regression, Grub is unlikely to be the culprit.

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