Re: [pve-devel] [PATCH pve-installer 1/6] auto: add early answer file sanity check for RAID configurations

["Michael Köppl" <m.koeppl@proxmox.com>]

On 4/29/25 10:26, Christoph Heiss wrote:
>>> ZFS actually lets one create RAIDZ{1,2,3} pools with 2, 3 and 4 disks,
>>> respectively. While maybe not really _that_ practical for real-world
>>> usecases (starting with the overhead), do we want to still allow it?
>>
>> I personally don't like putting too many constraints on what users can
>> do. Even if not every setting is practical, I think the installer should
>> allow them as long as they don't mean that the whole installation is
>> going to crash halfway through,
> 
> Yep, definitely. I also like to err on the side of caution and rather
> allow more than what might be technical feasible and/or allowed - latter
> especially w.r.t. network settings.
> 
> I'd then just lower it to the actual allowed minimum as mentioned above,
> doesn't hurt in any case :^)

I think I'd prefer doing this in a separate series, though. Changes 
would have to be made in the installer, the UI (there's a check there as 
well when creating a ZFS pool) and, IMO, also PBS. There are checks in 
PBS as well and I don't think it's a good idea to have diverging 
behavior between PVE and PBS about what is and isn't allowed w.r.t. ZFS 
RAID setups.

> 
>> especially if manually creating pools
>> like that would work. Maybe someone else has an opinion on this and can
>> weigh in, though. In any case, thanks for the suggestion!



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