I need to find out how I can get grub2/opensuse boot process to ignore raid partitions on non-primary disks. I have system with /dev/sda and /dev/sdb which are primary disks which boot UEFI from grub2 and a series of secondary disks. They look like this:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 465.8G 0 disk
├─sda1 8:1 0 2G 0 part /boot/efi
└─sda2 8:2 0 463.8G 0 part
└─md0 9:0 0 463.8G 0 raid1
├─system-root 254:0 0 455.8G 0 lvm /
└─system-swap 254:1 0 8G 0 lvm [SWAP]
sdb 8:16 0 465.8G 0 disk
├─sdb1 8:17 0 2G 0 part
└─sdb2 8:18 0 463.8G 0 part
└─md0 9:0 0 463.8G 0 raid1
├─system-root 254:0 0 455.8G 0 lvm /
└─system-swap 254:1 0 8G 0 lvm [SWAP]
sdc 8:32 0 1.8T 0 disk
├─sdc1 8:33 0 399M 0 part
└─sdc2 8:34 0 1.8T 0 part
sdd 8:48 0 1.8T 0 disk
├─sdd1 8:49 0 399M 0 part
└─sdd2 8:50 0 1.8T 0 part
sde 8:64 0 1.8T 0 disk
sdf 8:80 0 1.8T 0 disk
The disks /dev/sdc - /dev/sdf are disks that are used by virtual hosts run on the outer host. Reason being outer hosts functions as router and inner hosts are encrypted root servers that can be started remotely by ssh'ing into outer host. Outr host does not have root encryption, but obviously does not host any critical data.
Problem is that disks /dev/sdc - /dev/sdf have raid partitions (encryption + lvm, etc..) and when outer system boots it attempts to construct raid arrays, decrypt etc.. These raid arrays have to be deconstructed before virtual hosts can be booted. Furthermore boot fails when the volumes on these raid arrays cannot be unencrypted.
Question: how can grub2 boot process be set to ignore partitions on disks /dev/sdc - /dev/sdf and only set up system based on primary disks /dev/sda and /dev/sdb. Objective is automatic boot that looks like above structure.
Here is /boot/grub2/grub.cfg
#
# 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 ###
if [ -f ${config_directory}/grubenv ]; then
load_env -f ${config_directory}/grubenv
elif [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${env_block}" ] ; then
load_env -f "${env_block}"
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
if [ "${env_block}" ] ; then
save_env -f "${env_block}" next_entry
fi
set boot_once=true
else
set default="${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
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod part_gpt
insmod diskfilter
insmod mdraid1x
insmod lvm
insmod ext2
set root='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz' 95092080-6e02-43c0-8e97-730fd53cb61f
else
search --no-floppy --fs-uuid --set=root 95092080-6e02-43c0-8e97-730fd53cb61f
fi
font="/usr/share/grub2/unicode.pf2"
fi
if loadfont $font ; then
echo "Please press t to show the boot menu on this console"
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=POSIX
insmod gettext
fi
terminal_output gfxterm
insmod part_gpt
insmod part_gpt
insmod diskfilter
insmod mdraid1x
insmod lvm
insmod ext2
set root='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz' 95092080-6e02-43c0-8e97-730fd53cb61f
else
search --no-floppy --fs-uuid --set=root 95092080-6e02-43c0-8e97-730fd53cb61f
fi
insmod gfxmenu
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans-Bold14.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans10.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans12.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/ascii.pf2
insmod png
set theme=($root)/boot/grub2/themes/openSUSE/theme.txt
export theme
if [ x${boot_once} = xtrue ]; then
set timeout=0
elif [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=8
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=8
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/00_tuned ###
set tuned_params=""
### END /etc/grub.d/00_tuned ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'openSUSE LEAP 42.2' --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-95092080-6e02-43c0-8e97-730fd53cb61f' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod part_gpt
insmod diskfilter
insmod mdraid1x
insmod lvm
insmod ext2
set root='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz' 95092080-6e02-43c0-8e97-730fd53cb61f
else
search --no-floppy --fs-uuid --set=root 95092080-6e02-43c0-8e97-730fd53cb61f
fi
echo 'Loading Linux 4.4.27-2-default ...'
linux /boot/vmlinuz-4.4.27-2-default root=/dev/mapper/system-root resume=/dev/system/swap splash=silent quiet showopts nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd-4.4.27-2-default
}
submenu 'Advanced options for openSUSE LEAP 42.2' --hotkey=1 $menuentry_id_option 'gnulinux-advanced-95092080-6e02-43c0-8e97-730fd53cb61f' {
menuentry 'openSUSE LEAP 42.2, with Linux 4.4.27-2-default' --hotkey=2 --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.27-2-default-advanced-95092080-6e02-43c0-8e97-730fd53cb61f' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod part_gpt
insmod diskfilter
insmod mdraid1x
insmod lvm
insmod ext2
set root='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint='lvmid/36Ndwy-2YD2-onbC-3fKp-BdXl-Kmra-aELGxs/Pt4neo-JhAd-I4G4-02S8-X8eb-5xeY-wRpDWz' 95092080-6e02-43c0-8e97-730fd53cb61f
else
search --no-floppy --fs-uuid --set=root 95092080-6e02-43c0-8e97-730fd53cb61f
fi
echo 'Loading Linux 4.4.27-2-default ...'
linux /boot/vmlinuz-4.4.27-2-default root=/dev/mapper/system-root resume=/dev/system/swap splash=silent quiet showopts nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd-4.4.27-2-default
}
}
### 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_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###
### 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/50_bootcycle ###
# created for bootcycle detection
menuentry 'halt' {
halt
}
### END /etc/grub.d/50_bootcycle ###
### BEGIN /etc/grub.d/80_suse_btrfs_snapshot ###
### END /etc/grub.d/80_suse_btrfs_snapshot ###
### BEGIN /etc/grub.d/90_persistent ###
### END /etc/grub.d/90_persistent ###
### BEGIN /etc/grub.d/95_textmode ###
# On EFI systems we can only have graphics *or* serial, so allow the user
# to switch between the two
hiddenentry 'Text mode' --hotkey 't' {
set textmode=true
terminal_output console
}
### END /etc/grub.d/95_textmode ###
Let me know what other info might be helpful to understand.