We are using software raided partitions, including the root partition on some of our server systems.
We normally have multiple root partitions to keep the previous Fedora version available so we can reboot into an older version.
We have an issue in that the kernels appear to require the command line option "rd.auto" for the older systems to boot with the rootfs using software raid. When we use grub2-mkconfig (or update a kernel which I guess also uses this) the produced /boot/grub2/grub.cfg file does not have "rd.auto" in the kernel command line and so the older systems will not boot.
In fact no kernel options specified in either the old systems /etc/kernel/cmdline or /etc/default/grub are added to the grub.cfg for those systems.
I have added ‘LPARAMS="rd.auto ${LPARAMS}"’ to
/etc/grub.d/30_os-prober to work around this, but is there a way
kernel command line options for probed systems should be setup in
grub properly ?
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