EL7 kernels with $tuned_initrd variables

[ewwhite]

On my EL7 servers, I think kexec-reboot is having difficulty parsing the initrd arguments. Most of my kernels have this $tuned_initrd variable. kexec-reboot overlooks those grub entries and defaults to the Rescue kernel instead.

# kexec-reboot -i
Initrd /boot/initramfs-3.10.0-957.21.3.el7.x86_64.img $tuned_initrd is not readable

Select a kernel to stage:

1: CentOS Linux (0-rescue-a8a0cd7a792545d5b40793ebacae198c) 7 (Core)

[error10]

Please attach your grub.conf file.

[ewwhite]

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
set pager=1

if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="${saved_entry}"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

terminal_output console
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/00_tuned ###
set tuned_initrd=""
set tuned_params="skew_tick=1"
### END /etc/grub.d/00_tuned ###

### BEGIN /etc/grub.d/01_users ###
if [ -f ${prefix}/user.cfg ]; then
  source ${prefix}/user.cfg
  if [ -n "${GRUB2_PASSWORD}" ]; then
    set superusers="root"
    export superusers
    password_pbkdf2 root ${GRUB2_PASSWORD}
  fi
fi
### END /etc/grub.d/01_users ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'CentOS Linux (3.10.0-957.21.3.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-957.21.3.el7.x86_64-advanced-faf115c4-489e-429d-81cb-41ffc9892cb3' {
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_gpt
	insmod xfs
	set root='hd6,gpt2'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd6,gpt2 --hint-efi=hd6,gpt2 --hint-baremetal=ahci6,gpt2  fec285d7-dacc-49fe-ba00-4dbd68f07d68
	else
	  search --no-floppy --fs-uuid --set=root fec285d7-dacc-49fe-ba00-4dbd68f07d68
	fi
	linuxefi /vmlinuz-3.10.0-957.21.3.el7.x86_64 root=UUID=faf115c4-489e-429d-81cb-41ffc9892cb3 ro crashkernel=auto rhgb quiet LANG=en_US.UTF-8 $tuned_params
	initrdefi /initramfs-3.10.0-957.21.3.el7.x86_64.img $tuned_initrd
}
menuentry 'CentOS Linux (0-rescue-a8a0cd7a792545d5b40793ebacae198c) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-a8a0cd7a792545d5b40793ebacae198c-advanced-faf115c4-489e-429d-81cb-41ffc9892cb3' {
	load_video
	insmod gzio
	insmod part_gpt
	insmod xfs
	set root='hd6,gpt2'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd6,gpt2 --hint-efi=hd6,gpt2 --hint-baremetal=ahci6,gpt2  fec285d7-dacc-49fe-ba00-4dbd68f07d68
	else
	  search --no-floppy --fs-uuid --set=root fec285d7-dacc-49fe-ba00-4dbd68f07d68
	fi
	linuxefi /vmlinuz-0-rescue-a8a0cd7a792545d5b40793ebacae198c root=UUID=faf115c4-489e-429d-81cb-41ffc9892cb3 ro crashkernel=auto rhgb quiet
	initrdefi /initramfs-0-rescue-a8a0cd7a792545d5b40793ebacae198c.img
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/20_ppc_terminfo ###
### END /etc/grub.d/20_ppc_terminfo ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

[ewwhite]

Is there a clean way to fix this? The $tuned_initrd variable is the cause, but I'm not sure of the right workaround.