CentOS 8 deployments with separate /boot partition fail

[Jose Delarosa]

With MAAS v2.7, when deploying CentOS 8 to a system with a separate /boot partition (created with [1]), the OS deployment fails to boot (see attached screenshot). A similar deployment with CentOS 7 boots OK. The curtin log files (uploaded) don't show any errors during OS deployment.

I am not familiar enough with boot loader differences between CentOS 7 and 8, I can't make any conclusions if this is something in MAAS or just the way CentOS 8 handles the /boot partition.

Jose

[1] maas $profile machine set-storage-layout $system_id storage_layout=flat boot_size=540000000

[Christian Grabowski (cgrabowski)]

Hi there, is this using the centos 7 image from simple streams, or is this an uploaded boot resource?

[Christian Grabowski (cgrabowski)]

Sorry correction: is the centos 8 image from simple streams or an uploaded boot resource?

[Alexsander de Souza (alexsander-souza)]

Reproduced using images from stream. In this setup the CentOS 8 bootloader installer produces an invalid configuration.

= CentOS 7 (works)

load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
    search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 4f5f5e86-cae0-44f3-9d67-3d0a1b73a866
else
    search --no-floppy --fs-uuid --set=root 4f5f5e86-cae0-44f3-9d67-3d0a1b73a866
fi
linuxefi /vmlinuz-3.10.0-1160.36.2.el7.x86_64 root=UUID=4f12f7f1-ad75-40e1-9e13-1cbbc884097c ro crashkernel=auto console=tty1 console=ttyS0 rd.auto=1
initrdefi /initramfs-3.10.0-1160.36.2.el7.x86_64.img

= Centos 8 (invalid)

load_video
set gfx_payload=keep
insmod gzio
linux ($root)/boot/vmlinuz-4.18.0-305.12.1.el8_4.x86_64 root=UUID=4f12f7f1-ad75-40e1-9e13-1cbbc884097c ro crashkernel=auto console=tty1 console=ttyS0 rd.auto=1
initrd ($root)/boot/initramfs-4.18.0-305.12.1.el8_4.x86_64.img $tuned_initrd

[Jerzy Husakowski (jhusakowski)]

CentOS 8 is EOL