Setup LVM via Blivet-GUI

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1

Hey everyone, I’m running into some trouble while trying to setup a new install of F43 Silverblue with 2x 128GB SSDs and 2x 6TB HDDs (each in RAID1) with the SSDs serving as cache for the spinning disks. Would like to have /efi/boot and /boot on the SSD raid array with 100GB allocated as cache, however I’m only seeing options for LVM2 with allocating the entire disks; I feel like I’m missing something obvious but not sure what. Any ideas?

2

An update; was able to partition /boot/efi and /boot on the SSD and added the HDD to a LVM group but there doesn’t appear to be a way to create LVM cache. Has anyone been able to do so?

3

Hello,

I expect, that you have the HW RAID controller. Are you able to see SSD in install GUI? If yes you could continue for example via: Fresh Fedora 43 WS installation does not support LVM, EXT4? - #8 by vzak11 . There is not necessary to do it manually, there is “Storage editor”. But for me was more easy to do it manually.

But your SPOC is HW controller…

5

Repair: SPOC is my typing error, it should by SPOF. It means Single Point Of Failure. If your HW controller failure you would have nothing. No OS, no data. I don’t think, that your model is good idea…

6

Hey Vladimir,

I’m using Intel VROC for RAID and can indeed see both RAID1 arrays for the SSD and HDD in the Blivet-GUI setup. The issue is that there does not appear to be a way to create LVM-cache for a partition (in this case for the SSD RAID array) nor to add a partition to the newly created LVM (from the HDD RAID array).

7

Unfortunately blivet-gui currently doesn’t support LVM cache so your only option is to add it manually after the installation (or create a cached LV before the installation and reuse it).

(blivet-gui used to support LVM cache in the past, but the support was removed many years ago)

1 Like
8

Thank you for the confirmation, Vojtěch.

As an aside are there any plans to reintroduce the ability in the future?

9

Yes, unfortunately I don’t have as much time to work on blivet-gui as I wished, but I am slowly working on a new major release and LVM cache support is one of the features I’d like to add (or return in this case).