Preseed: LVM / MDRAID / GPT problems

[boxrick]

Good afternoon, I am currently using Ubuntu 16 Xenial and trying to get a preseed file working for setting up partitioning.

I have spent a considerable amount of time on this and am rather close. Simply put I require a RAID 1 partition, with LVM living on top and using the GPT labels. I mostly have this working however I am getting errors when GRUB2 tries to install at the end.

Perhaps someone could point out a way I can fix this configuration:


# GPT Optionsd-i partman-basicfilesystems/choose_label string gpt
d-i partman-basicfilesystems/default_label string gpt
d-i partman-partitioning/choose_label string gpt
d-i partman-partitioning/default_label string gpt
d-i partman/choose_label string gpt
d-i partman/default_label string gpt
partman-partitioning partman-partitioning/choose_label select gpt


# LVM Options
d-i partman-auto/purge_lvm_from_device boolean true
d-i partman-auto-lvm/new_vg_name string volgroup0
d-i partman-auto-lvm/guided_size string 100%


# Set up Raid 1 - MDRAID
d-i partman-auto/method string raid
d-i partman-auto/disk string /dev/sda /dev/sdb
partman-auto/choose_recipe select multiraid
d-i partman-auto/alignment string optimal


# Set up partitioning, first two are for MDRAID then we build LVM partitions on top of this
# <raidtype> <devcount> <sparecount> <fstype> <mountpoint> <devices> <sparedevices>
d-i partman-auto-raid/recipe string \
1 2 0 ext4 /boot raidid=1 . \
1 2 0 lvm - raidid=2 .


d-i partman-auto/expert_recipe string \
multiraid :: \
1024 1024 1024 raid \
$gptonly{ } \
$primary{ } \
$lvmignore{ } \
$bootable{ } \
$bios_boot{ } \
method{ raid } \
raidid{ 1 } \
. \
2048 10000 -1 raid \
$gptonly{ } \
$primary{ } \
$lvmignore{ } \
method{ raid } \
raidid{ 2 } \
. \
4096 100 4096 ext4 \
$gptonly{ } \
$defaultignore $lvmok{ } lv_name{ root } \
method{ format } format{ } \
use_filesystem{ } filesystem{ ext4 } \
mountpoint{ / } \
. \
8192 100 4096 linux-swap \
$gptonly{ } \
$defaultignore $lvmok{ } lv_name{ swap } \
method{ swap } format{ } \
. \
256 10000 -1 ext4 \
$gptonly{ } \
$defaultignore $lvmok{ } lv_name{ split } \
method{ lvm } \
.

d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true
d-i partman/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman-md/confirm_nooverwrite boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-md/confirm boolean true
d-i partman-lvm/confirm_nooverwrite boolean true
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-lvm/confirm boolean true
d-i mdadm/boot_degraded boolean true

[boxrick]

Managed to fix this with a simple change to biosgrub, putting full fixed version here for future reference and searches. I couldn't find any examples anywhere of all this working alongside each other.


# GPT Optionsd-i partman-basicfilesystems/choose_label string gpt
d-i partman-basicfilesystems/default_label string gpt
d-i partman-partitioning/choose_label string gpt
d-i partman-partitioning/default_label string gpt
d-i partman/choose_label string gpt
d-i partman/default_label string gpt
partman-partitioning partman-partitioning/choose_label select gpt


# LVM Options
d-i partman-auto/purge_lvm_from_device boolean true
d-i partman-auto-lvm/new_vg_name string volgroup0
d-i partman-auto-lvm/guided_size string 100%


# Set up Raid 1 - MDRAID
d-i partman-auto/method string raid
d-i partman-auto/disk string /dev/sda /dev/sdb
partman-auto/choose_recipe select multiraid
d-i partman-auto/alignment string optimal


# Set up partitioning, first two are for MDRAID then we build LVM partitions on top of this
# <raidtype> <devcount> <sparecount> <fstype> <mountpoint> <devices> <sparedevices>
d-i partman-auto-raid/recipe string \
1 2 0 ext4 /boot raidid=1 . \
1 2 0 lvm - raidid=2 .


d-i partman-auto/expert_recipe string \
multiraid :: \
1024 1024 1024 raid \
$gptonly{ } \
$primary{ } \
$lvmignore{ } \
$bootable{ } \
$bios_boot{ } \
method{ biosgrub } \
raidid{ 1 } \
. \
2048 10000 -1 raid \
$gptonly{ } \
$primary{ } \
$lvmignore{ } \
method{ raid } \
raidid{ 2 } \
. \
4096 100 4096 ext4 \
$gptonly{ } \
$defaultignore $lvmok{ } lv_name{ root } \
method{ format } format{ } \
use_filesystem{ } filesystem{ ext4 } \
mountpoint{ / } \
. \
8192 100 4096 linux-swap \
$gptonly{ } \
$defaultignore $lvmok{ } lv_name{ swap } \
method{ swap } format{ } \
. \
256 10000 -1 ext4 \
$gptonly{ } \
$defaultignore $lvmok{ } lv_name{ split } \
method{ lvm } \
.


d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true
d-i partman/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman-md/confirm_nooverwrite boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-md/confirm boolean true
d-i partman-lvm/confirm_nooverwrite boolean true
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-lvm/confirm boolean true
d-i mdadm/boot_degraded boolean true