System Error in TrueNas and then dataset is all gone

[chris75325]

A few days ago, I found my truenas service was suspended due to some error. The error in shell is like MIDDLEWARE FAILED TO START, SYSTEM WILL NOT BEHAVE CORRECTLY! and some error, the system just suspend in status of restarting truenas network. I just restart the whole host (pve) and then everything looks fine.

However, today I encounter a critical error

and a lot of notifications about:
Core files for the following executables were found: /usr/sbin/collectd

My dataset (firstpool) is totally gone, it remains three disks from orignal dataset.

I'm new to truenas scale , I will be very grateful if someone knows how to solve this problem!!
Thank you~~

 

[Samuel Tai]

How are you providing disks to the TrueNAS Proxmox VE VM? If you provided virtual disks or passed through physical disks, you've used an incorrect method known to cause data loss.

"Absolutely must virtualize FreeNAS!" ... a guide to not completely losing your data.

[---- 2018/02/27: This is still as relevant as ever. As PCIe-Passthru has matured, fewer problems are reported. I've updated some specific things known to be problematic ----] [---- 2014/12/24: Note, there is another post discussing how to deploy a small FreeNAS VM instance for basic file...

www.truenas.com

 

[chris75325]

I use the method of pass through hardware, like command : qm set 100 –sata1 /dev/disk/by-id/ata-ST1000DM003-1CH162_S1D8F613.
I just follow someone tutorial...
ask another way, how can I recover in this situation

 

[Samuel Tai]

Do you have backups? Worst case, your pool is unrecoverable. If not, you might be able to recover by destroying this VM, creating a new VM, and then importing the pool of 3 disks.

Do not add these disks to a pool, that will permanently destroy your existing pool. Rather, click the button that says Import Pool.

 

[Samuel Tai]

I just follow someone tutorial...

Do not assume someone's random tutorial is correct. Before you run TrueNAS as a VM, understand it on bare metal first.

 

[chris75325]

Ok thank you so much, do you mean the backup of disk content? Unfortunately ,I don't have it...
I will try creating a new vm latter.
Actually I want to learn both pve and truenas,so choosing such method.

 

[Samuel Tai]

Why are you putting valuable data on a test system?

 

[chris75325]

Why are you putting valuable data on a test system?

Umm, It's a homelab, not a production environment. It's a wrong decision I know now..

I tried creating a new vm and import the origin pool, but fail. Should I just create a new pool and try to import them?

 

[Samuel Tai]

Umm, It's a homelab, not a production environment. It's a wrong decision I know now..

I tried creating a new vm and import the origin pool, but fail. Should I just create a new pool and try to import them?

Let's try importing via the CLI, which will allow us to use stronger options: zpool import -R /mnt -f -F firstpool.

 

[chris75325]

I think it come back!!! Thank you so much!!
I will make a snapshot or backup of my data later.
BTW, I uploaded my config and then got the Web UI HTTPS certificate setup failed error, should I just ignore it or it is related with my Certificates setting (acme)? I should delete my setting and then create a new one? Thank you!!

 

[chris75325]

Never mind. After reboot , apps and web gui look fine.

 

[Scharbag]

View attachment 64825
I think it come back!!! Thank you so much!!
I will make a snapshot or backup of my data later.
BTW, I uploaded my config and then got the Web UI HTTPS certificate setup failed error, should I just ignore it or it is related with my Certificates setting (acme)? I should delete my setting and then create a new one? Thank you!!

You should have backups.

Snapshots are NOT NOT NOT NOT backups.