On 03/09/2022 at 06:32, Philip Hands wrote:
Ansgar <ans...@debian.org> writes:
Source: rescue
Version: 1.85
Severity: important
I've installed a system using btrfs for the root filesystem with d-i
(with disk encryption as well). As grub wasn't properly installed
(not registered with EFI), I tried to use the rescue mode to reinstall
grub.
However, mounting the root filesystem failed: /target contained only a
"@rootfs" subdirectory. So running a shell in the target fs failed.
Manually mounting the filesystem with `-o subvol=@rootfs` worked.
This was with Debian 11.4.
I just pushed 1.88 including this MR:
https://salsa.debian.org/installer-team/rescue/-/merge_requests/1
which seems like it ought to address the problem you're experiencing.
If I understand correctly, the problem is in mounting a btrfs root
filesystem. However the change in rescue 1.88 addresses only mounting
extra filesystems such as /boot/efi or separate /usr.
I guess that handling btrfs subvolumes or other root filesystem mount
options would require changes in the root file system selection step. I
do not see how it could be automated (rootflags are defined in the boot
loader configuration which may be located anywhere).
