How to read FreeNAS pool in Ubuntu?

[wapster]

Hello, TrueNAS (FreeNAS) Guru.

The situation is like this:
my FreeNAS server (11.3) is taking too long to resilvering..., produces errors and generally freezes :(
All this after a sudden power outage.

It was decided to read data from Ubuntu 22.04.3 LTS

To do this I followed the instructions https://openzfs.github.io/openzfs-docs/Getting Started/Ubuntu/index.html#installation
But I don’t see my pool :(

Code:

# zpool status
>> no pools available

but the disks themselves are visible in the system:

Code:

# lsblk -f
sda                                                                                       
├─sda1                                                                                   
└─sda2      zfs_member 5000  IronWolf 8639906193682941393                                 
sdb                                                                                       
├─sdb1                                                                                   
└─sdb2      zfs_member 5000  IronWolf 8639906193682941393

Tell me how to make disks from FreeNAS readable in Ubuntu (Linux)?

 

[Ericloewe]

You either forgot to run zpool import or forgot to tell us that you'd run it.

 

[wapster]

Yes, I tried to run

Code:

zpool import

but apparently with the wrong flags (options).

As soon as I asked the question, I received an answer :)
This happens often in life...

The correct command for me is this:

Code:

sudo zpool import -o readonly=on -f IronWolf

Everything worked!
Thank you very much, Internet and, in particular, this thread

Untypical reboot loop and crashed pool: How to rescue data first?

Hi there, I would rerally appreciate some help from the community. I started 6 weeks ago with Truenas, read a lot, tested a lot, got everything running and thought: Since all is good, lets get my 2 x 4 TB WD Red into production now. A week later I "de-indexed" the main folder in my Pool via...

www.truenas.com

 

[Ericloewe]

And are you actually seeing an improvement in your original issue? OpenZFS 2.0 brought a bunch of improvements that are missing in FreeNAS 11.x.

 

[wapster]

At least I got access to my data.
After creating a backup, I'll move on to updating FreeNAS -> TrueNAS.