FAI install with huge JBODs present - disk/by-id?

[Henning Glawe]

Moin,

are you booting via BIOS/legacy or UEFI (with the corresponding GRUB)?
"out of memory" sounds like something more likely to hit in a BIOS/legacy
boot.


On Tue, Dec 17, 2024 at 10:07:56AM +0100, Steffen Grunewald wrote:
> Good morning,
> 
> after a very promising start, I experienced a set-back yesterday with an
> otherwise proven-to-work FAI setup, and need an alternative now.
> 
> Over the past years, I wrote, used, and improved, a scheme that would
> ignore disk_config completely and work with hooks, to create a ZFS root
> pool (and possibly a data pool as well) over disks selected via patterns
> (usually /dev/disk/by-id/ata-MANUFACTURER).
> 
> This initially also worked for my recent setup, a BeeGFS server with two
> OS disks (ata-*), a handful NVMes and two times 60 disks over multipath,
> in total 247 disks seen by the kernel.
> 
> After setting up multipath and storage zpools, I can no longer boot into
> the system as long as at least one JBOD is connected - grub 2.06 gets an
> "error: out of memory" and even refuses such elementary tasks as
> "ls (...)/".
> Upgrading to grub 2.12 (from bookworm-backports) makes things worse as
> the screen stays dark, not even the greeting "Welcome to GRUB!" comes up.
> 
> I'm afraid I've got to go back to md raid, but with all disks connected,
> how do I find the two system disks, if not via /dev/disk/by-id? (a quick
> check with "sysinfo" shows them at /dev/sda and /dev/sddi)
> 
> Is there a regular way via disk_config, or do I have to invent a 17-sided
> wheel myself?
> 
> Thanks for listening,
>  S
> 
> -- 
> Steffen Grunewald, Cluster Administrator
> Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
> Am Mühlenberg 1 * D-14476 Potsdam-Golm * Germany
> ~~~
> Fon: +49-331-567 7274
> Mail: steffen.grunewald(at)aei.mpg.de
> ~~~

-- 
Mit freundlichen Grüßen
Henning Glawe

Dr. Henning Glawe
Max-Planck-Institut für Struktur und Dynamik der Materie
Geb. 900 (MPSD), Luruper Chaussee 149, 22761 Hamburg, Germany
http://www.mpsd.mpg.de/, Email: henning.glawe at mpsd.mpg.de
Building/Room: 900/O1.053, Phone: +49-40-8998-88392