ZFS Pool not starting

[SeaWee]

OK - will disable the VM...and try to reboot.

Initially I did not passthrough these disks.

 

[SeaWee]

Luckily 20 years of family photos are stored online...but I will miss some of this stuff...

Will try THIS tomorrow. Take a disk out of the Proxmox server and add it to a windows machine...

But I am not that hopefull...

Thanks for your help!

 

[leesteken]

You showed with /dev/disk/by-id that most of the VM virtual disks are still there. Are those the VM's your would like to recover? Or do you need to restore the OMV?
It's not clear to me how you got to this situation but maybe somethings can still be recovered (possibly by someone more experienced than me on this subject).

 

[Dunuin]

Luckily 20 years of family photos are stored online...but I will miss some of this stuff...

Will try THIS tomorrow. Take a disk out of the Proxmox server and add it to a windows machine...

But I am not that hopefull...

Thanks for your help!

Don't try any data recovery without backing up those two HDDs first. You should clone those disks first and then only do the data recovery on the cloned drives. That way you can't screw up the disks even more.

 

[SeaWee]

You showed with /dev/disk/by-id that most of the VM virtual disks are still there. Are those the VM's your would like to recover? Or do you need to restore the OMV?
It's not clear to me how you got to this situation but maybe somethings can still be recovered (possibly by someone more experienced than me on this subject).

I think all VMs are still there. I have backup of all VMs and containers to be restored if needed.

None of the other VMs or containers were using the 2 ZFS Pools. They were only used in openmediavault.

It is not strictly necessary for me to recover the openmediavault as it was only used to share the drives over network. Now, without the drives/data it is less useful.

I also have configs backups of my Unifi and Home Assistant. These are the most important ones.

Don't try any data recovery without backing up those two HDDs first. You should clone those disks first and then only do the data recovery on the cloned drives. That way you can't screw up the disks even more.

That is a good point - but how could these be screwed more than they are? ...of course, someone can stumble on this post and give the magic words...and then I am in a bad situation...so good point.

Anyway - I have no doubt that it was something I did - I just don't know what. So now I need to consider whether to re-build my Proxmox and do the ZFS' again...or whether I go the sorry way and get a Synology with a basic mirror raid . Since I am (obviously) a total amateur and my tinkering finally after 30 years might give me a blow...This could be the wake up call to get a "Raid-in-a-box" that I will have a hard time to kill.

The Proxmox has been a blast to work with. Spinning up VMs and Containers are great. But if I am not understanding the ZFS or RAID stuff it can hurt.

Live and learn...

 

[Dunuin]

That is a good point - but how could these be screwed more than they are? ...of course, someone can stumble on this post and give the magic words...and then I am in a bad situation...so good point.

Now you got data that you can't access but that might be recoverable. Do something stupid while trying to restore data and you might corrupt all the inaccessible data, making it impossible to ever get any of that data back.

 

[SeaWee]

You think something like CloneZilla will be fine for a backup of a disk?

 

[Dunuin]

You think something like CloneZilla will be fine for a backup of a disk?

Should be fine as you didn't complained about IO errors.