Proxmox VE 7 add ZFS SSD disk.

[Saturn]

I create a virtual machine in Microsoft Hyper-V, add two disks with a fixed size of 15 gigabytes to it, load a disk with the latest version of Proxmox VE into the virtual drive, perform the initial installation, and select both disks in RAID 0 mode during installation. I reboot, connect through the browser to the local address, check the work. I turn it off, through the dispatcher I add another disk to this system, on a separate controller. I turn on the virtual computer, wait for Proxmox VE to boot, connect via LAN, go to disks - ZFS - Create ZFS and select the disk that appears as singl disk. The system successfully adds the disk and uses it as storage, also for temporary and for images. I turn off Proxmox VE. I build a new computer and do it all over again. The question is, how to connect the third disk with the data already there from the previous step, in the new system?

 

[Saturn]

How to add a migrated drive with a single pool?

 

[Dunuin]

"Datacenter -> YourNode -> Disks -> ZFS -> Add" will format a unpartitioned disk with ZFS and create a storage of type "ZFSpool".
"Datacenter -> Storage -> Add -> ZFS" will add a storage of type "ZFSpool" for an already existing ZFS pool.

 

[Saturn]

I want to add as a separate pool as in the first system, not to an existing one. With data retention, no formatting.

 

[Dunuin]

According to your screenshots N2 already got a ZFS formated disk. To make that usable you need to use "Datacenter -> Storage -> Add -> ZFS".
If you don't want any existing data on that disk, you will have to wipe it first, as PVE won't allow you to create a new ZFS pool using disks that are not empty, so you don't lose your data by user error. After wiping it "Datacenter -> YourNode -> Disks -> ZFS -> Add" should allow you to create a new ZFS pool using that disk.

 

[Saturn]

I just need data from the disk, I want to see it, transfer it, then I can erase, create a new pool and restore the data back. But now I connect the disk nowhere I see them!

 

[Dunuin]

Then import that pool and backup stuff via CLI by using zpool import -f YourPoolName.
Or add a new ZFSPool storage, so PVE can use that pool by using "Datacenter -> Storage -> Add -> ZFS".

 

[Saturn]

Добавить нечего, нет пула (однодискового) и нет возможности подключить что-то к ZFS

 

[Dunuin]

You might need to import that pool first.
zpool import to list the names of importable pools.
zpool import -f YourPoolName to import that pool.

 

[Saturn]

The situation is that there is no pool and cannot be created, there is no disk. And you can't add a disk without a pool

 

[Dunuin]

Did you actually import that pool via CLI with zpool import -f YourPoolName?

 

[Saturn]

Yes

 

[Saturn]

Add

 

[Saturn]

the pool has been added, but the system has formatted it and it is empty.

 

[Saturn]

And in the first one, he was with the data.

 

[Saturn]

This method is not suitable, it destroys all the data on the disk!!!!

 

[Dunuin]

It is probably not empty. Run zfs list and I would bet the zvols are still there.
But keep in mind that this pool only stored your virtual disks, not your VMs. PVE can't show you the VMs, as there are no VMs as these are defined by the VM config files that were stored in "/etc/pve/qemu-server" on rpool on your old PVe node.
So try to copy /etc/pve/qemu-server/100.conf from your old to your new PVE node.

 

[Saturn]

How to see them and restore them in this case?

 

[Dunuin]

If zfs list don't list the zvol, then its indeed not existing on your imported pool.

 

[Saturn]

Do I understand correctly that there is no way to move a data disk between systems if it is a ZFS pool and you only need to use ext4 disks or is there some way?