kernel command line arguments do not get updated

[jlarsen45]

I am using intel-corei7-64 with grub2 as bootloader and using libostree through meta-updater ( ostree_2020.2.bb). If I change my kernel command line parameters the changes do not get updated when an update is performed.

Steps:

1. make image with Yocto project.
2. run image on board
3. view kernel parameters cat /proc/cmdline
4. change kernel command line parameters (OSTREE_KERNEL_ARGS)
5. make new image within Yocto project.
6. update board
7. view kernel parameters cat /proc/cmdline

Expected result: command line parameters are the new parameters from new OSTREE_KERNEL_ARGS

Actual result: command line parameters are stuck at initial values

[pattivacek]

This looks to be a duplicate of advancedtelematic/meta-updater#706, and the issue looks to be specific to meta-updater, not ostree, so I think this can be closed.

[cgwalters]

Thanks; I think this is really a duplicate of #479 right?

Either way we agree it's a dup so closing, but nevertheless thanks for the report (and I also appreciate the triage too!)