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Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot

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Hello,

On Wed, May 22, 2024 at 05:03:34PM -0400, Stefan Monnier wrote:
> Hmm... I've been using a "plain old partition" for /boot (with
> everything else in LVM) for "ever", originally because the boot loader
> was not able to read LVM, and later out of habit.  I was thinking of
> finally moving /boot into an LV to make things simpler, but I see that
> it'd still be playing with fire

grub supports, for a long time:

   - / on LVM, with /boot within that filesystem
   - /boot on LVM, separately

(it also worked with LILO, because LILO would record the exact address
 where the kernel & initrd was, regardless of abstractions layers :->)

Recently, I have been playing with RAID-on-LVM (I was mostly using LVM
on md before, which worked with grub), and it works too.

Where grub fails, is if you have /boot on the same LVM volume group
where any of the LVs "before him in order" have:

   - dm-integrity
   - specific metadata

So yes, any advanced setup might break grub, and so the easiest is to
have /boot on its separate partition again for the time being.

Which makes two partitions of you also have an UEFI.

>  (AFAICT booting off of LVM was still not
> supported by U-Boot either last time I checked).  ????

No idea about that one, sorry.

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Thread

HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-04-06 09:52 +0200
  Re: HDD long-term data storage with ensured integrity Marc SCHAEFER <schaefer@alphanet.ch> - 2024-04-08 11:40 +0200
    Re: HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-04-08 20:30 +0200
      Re: HDD long-term data storage with ensured integrity Marc SCHAEFER <schaefer@alphanet.ch> - 2024-04-08 22:10 +0200
        Re: HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-04-09 00:50 +0200
        Re: HDD long-term data storage with ensured integrity Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-03 13:30 +0200
          Re: HDD long-term data storage with ensured integrity Michael Kjörling <2695bd53d63c@ewoof.net> - 2024-05-03 14:50 +0200
          Re: HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-05-03 23:00 +0200
            Re: HDD long-term data storage with ensured integrity Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-04 09:50 +0200
              Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-20 14:40 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Franco Martelli <martellif67@gmail.com> - 2024-05-21 20:50 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-22 12:10 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-22 09:00 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Andy Smith <andy@strugglers.net> - 2024-05-22 12:20 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-22 12:30 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-22 09:00 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Stefan Monnier <monnier@iro.umontreal.ca> - 2024-05-22 23:10 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Marc SCHAEFER <schaefer@alphanet.ch> - 2024-05-23 09:00 +0200
                Re: Debian bookwork / grub2 / LVM / RAID / dm-integrity fails to boot Franco Martelli <martellif67@gmail.com> - 2024-05-28 15:30 +0200
      Why LVM (was: HDD long-term data storage with ensured integrity) Stefan Monnier <monnier@iro.umontreal.ca> - 2024-04-08 23:10 +0200
        Re: Why LVM David Christensen <dpchrist@holgerdanske.com> - 2024-04-09 01:10 +0200
          Re: Why LVM Stefan Monnier <monnier@iro.umontreal.ca> - 2024-04-09 02:00 +0200
            Re: Why LVM David Christensen <dpchrist@holgerdanske.com> - 2024-04-09 12:20 +0200
  Re: HDD long-term data storage with ensured integrity piorunz <piorunz@gmx.com> - 2024-04-10 02:10 +0200
    Re: HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-04-10 13:20 +0200
      Re: HDD long-term data storage with ensured integrity Curt <curty@free.fr> - 2024-04-10 17:00 +0200
      Re: HDD long-term data storage with ensured integrity Paul Leiber <paul@onlineschubla.de> - 2024-04-10 18:10 +0200
        Re: HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-04-11 01:20 +0200
      Re: HDD long-term data storage with ensured integrity piorunz <piorunz@gmx.com> - 2024-04-12 17:20 +0200
        Re: HDD long-term data storage with ensured integrity David Christensen <dpchrist@holgerdanske.com> - 2024-04-13 05:10 +0200

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