Bug#974838: grub: GRUB as of 2020-November.15: Failure to boot multiple systems - seemingly random

[Colin Watson]

Control: reassign -1 grub-pc

On Sun, Nov 15, 2020 at 12:47:34PM +0100, waxhead wrote:
> First I hope I am reporitng this on the correct package. Apologize if not.

grub is GRUB Legacy; grub-pc is GRUB 2.  (Though I'm guessing that
you're using BIOS, rather than UEFI; on a UEFI system it would be
grub-efi-amd64 instead.)

We definitely need to know what version of GRUB you're using.

> I have various systems all running BTRFS as the rootfs. BTRFS is installed on partitions that are offset of the first sector=2048
> The systems I use range from 8 to 20 drives. BTRFS is set up with data=raid1 , and metadata =raid1c4
> After updates which update the grub package GRUB fails very often on my systems.
> I can't remember all the error codes I have had,  which makes this a rather poor bug report, but the latest one (today) was:

Every distinct error is potentially a distinct bug.  I'm going to refuse
to deal with more than one distinct error in a single bug report,
because that's entirely unmanageable, so I'll focus on this one:

> error: symbol 'grub_calloc' not found.
> grub rescue>

This sounds like #966575, so it's vital for us to know what version of
grub-pc you have installed.  We'll also need the output of "debconf-show
grub-pc" and information about the disk setup of your system.

It might be easier to close this bug and use "reportbug grub-pc" from
the relevant system, which should automatically attach some useful
information.

-- 
Colin Watson (he/him)                              [cjwatson at debian.org]