Proxmox Cloud and Openmedia Vault
reddit / selfhosted

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defekT1312 · 2023-12-26 15:01

I'm about to configure my first Server and currently I'm Lost in
tutorials, I'm trying nor for hours without any great solution.

I installed Proxmox, a VM for OpenMediaVault and a Container for
Nextcloud.

I want to Use OMV as a NAS for local Storage and Nextcloud for
external acces. I don't know if this is even right but that was the
Idea.

There are 2 HDD which I want to use as a RAID but then the Problems
begin. Shall I do a  ZFS Pool via Proxmox or shall I Passthrough the
HDD to the VM and let OMV do the Raid? How can I connect Nextcloud to
the Pool then?

If I do ZFS is it enough to Passthrough one HDD and Proxmox will do
the Mirroring?

I'm really lost rn

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nik_h_75 · 2023-12-26 15:11

I recommend you pass through the HDDs to the OMV VM.
In OMV you setup your raid for the 2 HDDs and then share (setup NFS).

In your Nextcloud VM you mount the nfs share.

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defekT1312 · 2023-12-26 15:14

Ok can configure that permanently in /etc/fstab I guess.

What about the Proxmox ZFS Pool then? Delete?

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nik_h_75 · 2023-12-26 16:09

Yes, the mount is defined in fstab (the nfs share can be created in
omv - just be sure you do the correct variables).

When you pass through the disks they are "invisible" to proxmox host -
so yes, the ZFS pool is not relevant / should be deleted prior to
passing through the HDDs.

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MaxxFlowDE · 2023-12-26 16:18

Depends on other assumptions, too!

You can do this with no clue. And for performance, it might be the
best!

When thinking about backup, I would go for strage management at host
(eg zfs) and use virtual disks in vm as normal (use virtio as virtual
disk type for best performance).

This way you can backup the full vm content to a Nas or when you like
differential backup (space usage) backup to a PBS.

You do not need to care about individual backup strategy. Just backup
the vm including everything.

For nextcloud, I would recommend: try running NC on docker inside omv.
You just need to install the docker compose plugin in omv and can
start.

This way you can put all available space to one vm and you don't have
to guess for which vm (omv or NC) you need which disk capacity in a
year or two.

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CoLuxey · 2023-12-26 16:33

I did exactly what you want.

I bought an HBA card and use this in the OMV VM via a hardware device
passthrough.
Then I installed the ZFS plugin in OMV.

Nextcloud is running independent in another VM on proxmox.

I prefer this way because you have access to your data from every
system that can work with ZFS.
With virtual in proxmox as a NAS its getting much more complicated
when you need to recover data.