Arch Linux

Description:
Let's start with core/grub 2:2.06-5
[code]
❯ pacman -Qi grub
Name : grub
Version : 2:2.06-5
Description : GNU GRand Unified Bootloader (2)
Architecture : x86_64
URL : https://www.gnu.org/software/grub/
Licenses : GPL3
Groups : None
Provides : grub-common grub-bios grub-emu grub-efi-x86_64
Depends On : sh xz gettext device-mapper
Optional Deps : freetype2: For grub-mkfont usage [installed]
fuse2: For grub-mount usage [installed]
dosfstools: For grub-mkrescue FAT FS and EFI support [installed]
lzop: For grub-mkrescue LZO support
efibootmgr: For grub-install EFI support [installed]
libisoburn: Provides xorriso for generating grub rescue iso using grub-mkrescue
os-prober: To detect other OSes when generating grub.cfg in BIOS systems [installed]
mtools: For grub-mkrescue FAT FS support [installed]
Required By : None
Optional For : None
Conflicts With : grub-common grub-bios grub-emu grub-efi-x86_64 grub-legacy
Replaces : grub-common grub-bios grub-emu grub-efi-x86_64
Installed Size : 34.10 MiB
Packager : Christian Hesse <eworm@archlinux.org>
Build Date : Mon 28 Mar 2022 16:27:03 CST
Install Date : Tue 11 Oct 2022 17:32:08 CST
Install Reason : Explicitly installed
Install Script : Yes
Validated By : None


❯ sudo grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=archlinux
Installing for x86_64-efi platform.


Installation finished. No error reported.
❯ sudo grub-probe -d /dev/sda2
f2fs
[/code]

Everything is normal... When I updated to core/grub 2:2.06.r334
[code]
❯ pacman -Qi grub
Name : grub
Version : 2:2.06.r334.g340377470-1
Description : GNU GRand Unified Bootloader (2)
Architecture : x86_64
URL : https://www.gnu.org/software/grub/
Licenses : GPL3
Groups : None
Provides : grub-common grub-bios grub-emu grub-efi-x86_64
Depends On : sh xz gettext device-mapper
Optional Deps : freetype2: For grub-mkfont usage [installed]
fuse2: For grub-mount usage [installed]
dosfstools: For grub-mkrescue FAT FS and EFI support [installed]
lzop: For grub-mkrescue LZO support
efibootmgr: For grub-install EFI support [installed]
libisoburn: Provides xorriso for generating grub rescue iso using grub-mkrescue
os-prober: To detect other OSes when generating grub.cfg in BIOS systems [installed]
mtools: For grub-mkrescue FAT FS support [installed]
Required By : None
Optional For : None
Conflicts With : grub-common grub-bios grub-emu grub-efi-x86_64 grub-legacy
Replaces : grub-common grub-bios grub-emu grub-efi-x86_64
Installed Size : 33.02 MiB
Packager : Christian Hesse <eworm@archlinux.org>
Build Date : Wed 05 Oct 2022 23:20:09 CST
Install Date : Tue 11 Oct 2022 17:46:41 CST
Install Reason : Explicitly installed
Install Script : Yes
Validated By : Signature


❯ sudo grub-probe -d /dev/sda2
grub-probe: error: unknown filesystem.


❯ sudo grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=archlinux
Installing for x86_64-efi platform.
grub-install: error: unknown filesystem.
[/code]

OR core/grub 2:2.06.r261

[code]
❯ sudo pacman -Qi grub
Name : grub
Version : 2:2.06.r261.g2f4430cc0-1
Description : GNU GRand Unified Bootloader (2)
Architecture : x86_64
URL : https://www.gnu.org/software/grub/
Licenses : GPL3
Groups : None
Provides : grub-common grub-bios grub-emu grub-efi-x86_64
Depends On : sh xz gettext device-mapper
Optional Deps : freetype2: For grub-mkfont usage [installed]
fuse2: For grub-mount usage [installed]
dosfstools: For grub-mkrescue FAT FS and EFI support [installed]
lzop: For grub-mkrescue LZO support
efibootmgr: For grub-install EFI support [installed]
libisoburn: Provides xorriso for generating grub rescue iso using grub-mkrescue
os-prober: To detect other OSes when generating grub.cfg in BIOS systems [installed]
mtools: For grub-mkrescue FAT FS support [installed]
Required By : None
Optional For : None
Conflicts With : grub-common grub-bios grub-emu grub-efi-x86_64 grub-legacy
Replaces : grub-common grub-bios grub-emu grub-efi-x86_64
Installed Size : 32.88 MiB
Packager : Christian Hesse <eworm@archlinux.org>
Build Date : Wed 08 Jun 2022 21:46:04 CST
Install Date : Tue 11 Oct 2022 17:50:21 CST
Install Reason : Explicitly installed
Install Script : Yes
Validated By : Signature

❯ sudo grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=archlinux
Installing for x86_64-efi platform.
grub-install: error: unknown filesystem.
❯ sudo grub-probe -d /dev/sda2
grub-probe: error: unknown filesystem.
[/code]

Additional info:
* core/grub 2:2.06.r261 and later
* config and/or log files etc.
* link to upstream bug report, if any

Steps to reproduce:

1. Install 2.06.r261 or later of core/grub
2. sudo grub-probe -d F2FS_PARTITION