[Bug 2060695] Re: 24.04 grub-pc cannot upgrade on mirrored software RAID root disk
Ubuntu Foundations Team Bug Bot
2060695 at bugs.launchpad.net
Thu Apr 11 12:18:33 UTC 2024
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https://bugs.launchpad.net/bugs/2060695
Title:
24.04 grub-pc cannot upgrade on mirrored software RAID root disk
Status in subiquity:
Invalid
Status in cloud-init package in Ubuntu:
New
Status in grub2 package in Ubuntu:
Invalid
Bug description:
I am testing the 24.04 pre-beta in a libvirt virtual machine with two
/dev/vd* disks set up as a single mirrored software RAID device,
/dev/md0, that is used for the root filesystem. Since this is a
libvirt install, it is using BIOS booting, not UEFI (maybe someday
libvirt will support snapshots of UEFI based VMs). When I attempt to
install Ubuntu updates, the grub-pc install fails with:
grub-pc: Running grub-install ...
Installing for i386-pc platform.
grub-install: warning: File system `ext2' doesn't support embedding.
grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub-install: error: diskfilter writes are not supported.
grub-install failure for /dev/md0
You must correct your GRUB install devices before proceeding:
DEBIAN_FRONTEND=dialog dpkg --configure grub-pc
dpkg --configure -a
dpkg: error processing package grub-pc (--configure):
installed grub-pc package post-installation script subprocess returned error exit status 1
'debconf-show' reports (changed) settings as:
* grub-efi/cloud_style_installation: false
* grub-pc/install_devices: /dev/disk/by-id/md-name-ubuntu-server:0
* grub-pc/install_devices_empty: false
The same mirrored root filesystem configuration works on 22.04 LTS.
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