Created attachment 1132868 [details]
fuller report by jstancek

Description of problem:
When upgrading from regular 7.2 system to the nightly of http://download.eng.brq.redhat.com/nightly/RHEL-7.3-20160229.n.0/ my /boot/grub2/grub.cfg gets badly mangled. jstancek found this for me:

You start with RHEL7.2, new kernel is installed, then redhat-release-workstation is installed (you go from 7.2 to 7.3).

When all packages are installed, some kernel post install script runs and generates initrd. However grubby fails to update grub.cfg because title doesn't match (7.2 vs 7.3):

new_kernel_pkg --package kernel --mkinitrd --dracut --depmod --update 3.10.0-356.el7.x86_64
runs
/sbin/grubby --grub2 -c /boot/grub2/grub.cfg --update-kernel=/boot/vmlinuz-3.10.0-356.el7.x86_64 --initrd /boot/initramfs-3.10.0-356.el7.x86_64.img '--args= LANG=en_US.UTF-8' '--title=Red Hat Enterprise Linux Server (3.10.0-356.el7.x86_64) 7.3 (Maipo)' -> FAILS to add initrd line to grub.cfg

but in grub.cfg is:

menuentry 'Red Hat Enterprise Linux Server (3.10.0-356.el7.x86_64) 7.2 (Maipo)' --class red --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-327.10.1.el7.x86_64-advanced-7669efd2-2832-4d5c-af6c-419a4c8db7cb' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_msdos
        insmod xfs
        set root='hd0,msdos1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1'  824f188c-8019-4ffa-bd17-ece8ff317df9
        else
          search --no-floppy --fs-uuid --set=root 824f188c-8019-4ffa-bd17-ece8ff317df9
        fi
        linux16 /vmlinuz-3.10.0-356.el7.x86_64 root=/dev/mapper/rhel_dell--pem520--03-root ro oops=panic crashkernel=auto rd.lvm.lv=rhel_dell-pem520-03/root rd.lvm.lv=rhel_dell-pem520-03/swap console=ttyS0,115200n81 LANG=en_US.UTF-8
}

Version-Release number of selected component (if applicable):
grubby-8.28-17.el7.x86_64