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Description of problem:
# cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-3.10.0-862.14.1.el7.ppc64le root=/dev/mapper/rhel_ibm--p8--storage--02--guest--15-root ro crashkernel=auto rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/root rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/swap LANG=en_US.UTF-8

# grubby --remove-args='rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/swap' --update-kernel=/boot/vmlinuz-3.10.0-862.14.1.el7.ppc64le

It actually end up removing "rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/root" instead of swap which caused the system unable to boot later on.

Version-Release number of selected component (if applicable):
grubby-8.28-25.el7

(In reply to Qian Cai from comment #0)
> Description of problem:
> # cat /proc/cmdline 
> BOOT_IMAGE=/vmlinuz-3.10.0-862.14.1.el7.ppc64le
> root=/dev/mapper/rhel_ibm--p8--storage--02--guest--15-root ro
> crashkernel=auto rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/root
> rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/swap LANG=en_US.UTF-8
> 
> # grubby --remove-args='rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/swap'
> --update-kernel=/boot/vmlinuz-3.10.0-862.14.1.el7.ppc64le
> 
> It actually end up removing "rd.lvm.lv=rhel_ibm-p8-storage-02-guest-15/root"
> instead of swap which caused the system unable to boot later on.
> 
> Version-Release number of selected component (if applicable):
> grubby-8.28-25.el7

Did this work on RHEL 7.5?

No

I see, that this is a duplicate of bug 1476273.

Qian,

Could you please test the following scratch build?

https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=18361366

It works fine.

*** This bug has been marked as a duplicate of bug 1476273 ***