Upgraded from 25.04.0 to 25.04.1, and all storage now Exported?

TrueNAS General
1

Hi,
Last night I noted the release of 25.04.1, and actioned the upgrade. On restart after the upgrade, my storage pool is now marked as ‘exported’, and I have two options - ‘Disks with exported pools’ (with an Add to Pool option - if I choose ‘Existing Pool’ the drop-down field is blank), and ‘Upgrade Pool’, which throws up an error.

I tried reverting back to 25.04.0, but this hasn’t fixed the issue.

My setup is as follows:

Datto 5SX (rebadged OptiPlex 7080 XE Micro)
16GB RAM
1 x 500GB SSD
1 x 1TB SSD

The system runs Proxmox, and TrueNAS is a VM. I passed through 200GB of the original 500GB, and later added the 1TB SSD to the existing pool. No backups unfortunately as I’ve been testing TrueNAS, but ideally would like to recover the data if possible.

Can anyone offer any assistance please?

2

I am guessing you didn’t pass through the disk controller to the TN VM and also didn’t blacklist the controller from Proxmox

That being the (probable) case - you may have an issue.

What does zpool status show?
Can you import the pool?

1 Like
3

Hi Sean,

Thanks for the reply.

I’ve managed to solve it by running the command:

sudo zpool import -d /dev [NAME OF POOL]

I used Claude to identify the issue, and it relates to how Proxmox was presenting the 1TB disk to TrueNAS - in the course of the update and restart, this drive label was changed?

4

Please please read the blog article about virtual TrueNAS installations especially the part w.r.t storage controller passthrough:

Proxmox speaks ZFS and we’ve seen scenarios where it will decide to import your TrueNAS pool - simultaneous access will result in pool corruption.

1 Like
5

Obligatory.

6

Definately understood! The sole reason for Proxmox was to run LXCs as I was very new to home servers, but I now run many all services except for Home Assistant in TrueNAS, as I find the permissions/setup process so much easier. I’m fully aware I’m dancing with the devil, but I haven’t got an easy way to get rid of Proxmox and replace it with TrueNAS on the bare metal as yet, plus theres no critical data currently, it’s more for learning and tinkering.