Bug#959228: grub2: Grub2 V2.04-7 does not recognize BTRFS RAID1c4 filesystem

[Steve McIntyre]

Hi!

On Fri, May 01, 2020 at 10:57:15AM +0200, waxhead wrote:
>Steve McIntyre wrote:
>> On Fri, May 01, 2020 at 10:11:23AM +0200, waxhead wrote:
>> > 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
>> 
>> Try again next Monday - the live images are only updated weekly. Grub
>> version 2.04-7 only just migrated to testing in the last 24h...
>> 
>Uhmmm, not sure I understand. The bugreport has nothing to do with the live
>images (they where suitable for me to recover).
>
>The bugreport is for grub2 v2.04-7 which, as you say just migrated to
>testing. Problem: grub2 v2.04-7 should support RAID1c34 and does not seem to
>do so.

Apologies - misunderstood "Fired up the latest testing live cd". Need
more coffee, clearly... :-/

-- 
Steve McIntyre, Cambridge, UK.                                steve at einval.com
"This dress doesn't reverse." -- Alden Spiess