Source: grub2 Version: 2.04-7 Severity: important Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? I waited for grub 2.04-7 to support the BTRFS RAID1c3/RAID1c4 features. it found that it had migraded to testing this morning, did an apt update + apt upgrade to get it. Made sure I ran update-grub, and btrfs balance start -mconvert=raid1c4 / also checked with apt-get source grub2 , browsed the btrfs.c to check , all the raid1c34 parts seemed to be in place. ran systemd reboot and grub failed with unknown filesystem. * What exactly did you do (or not do) that was effective (or ineffective)? Fired up the latest testing live cd and rebalanced my rootfs back to btrfs raid1 * What was the outcome of this action? Grub2 apparently does not support RAID1c34 even if it should (cherry picked from upstream) I was able to recover, therefore only a temporarily data "loss" until I rebalanced my rootfs. * What outcome did you expect instead? That Grub2 should support the RAID1c3/4 feature in BTRFS as this is available in Debian now. *** End of the template - remove these template lines *** -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.5.0-2-amd64 (SMP w/2 CPU cores) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled