SOLVED Recover Old TrueNAS Configuration without a backup

[JimInNeavitt]

I had two critical failures over the past month. My TrueNAS server stopped working a month or two ago because I was using USB sticks. Then just a couple of days ago, the RAID controller on my main server went belly up (the heat sink fell of if you can believe that). So, I don't have the backups for either my RAID config or my TrueNAS config as each was backed up to the other. I was hoping that I could just reinstall TrueNAS (on an NVMe card this time) and that TrueNAS would find the ZFS configuration. I thought I remembered that having worked in the past, but maybe I am not remembering correctly. I did that and TrueNAS is working, but it only has the base configuration and doesn't see any of the pools that I had created prior to the failure. Is there anyway that I can "rediscover" and recover what my ZFS configuration was without a backup? Nothing should have happened to the data since all I did was install TrueNAS-12.0-U5.1 on a 500 GB NVMe card since the USB sticks that I had been using failed.
My configuration is:
TrueNAS-12.0-U5.1
Supermicro Motherboard X11SAE-M
64 GB RAM
8 6TB drives
2 250 GB SSD drives that I was using for cache and logging.
I think I had this configured in one main pool with ZFSz2.

I don't really care about anything except recovering the data at this point.

Thanks in advance
Jim

 

[Samuel Tai]

Were you relying on the RAID card to create volumes visible to TrueNAS, or did you flash the RAID card into IT mode, so TrueNAS had direct access to the drives? If the former, there's not much we can do to help. If the latter, you can click the Add button in Storage->Pools, and import the old pools and be back in business.

 

[JimInNeavitt]

I probably confused people by mentioning the RAID. I have two servers. One uses traditional HW RAID (50) and the other server was running TrueNAS with JBOD that I ran as (I think) z2. I backed up my HW RAID stuff to the TrueNAS machine and backed up my TrueNAS configurations to my HW RAID server. So, I don't have the backups to recover either machine. Thanks for the hint about recovering from the Storage -> Pools section. I just imported my main data pool and it appears that everything I remember that was there is back in /mnt

Thanks very much Samuel!

BTW, your tagline is appropriate for this situation" "Never underestimate your own stupidity"