Proxmox increase ZFS pool

[Dexter23]

Hi everyone i want to say if it's possibile without reinstall proxmox increase the zfs pool
This is the disk installed on the server proxmox:

This is ZFS "rpool":

Is possibile to attach another SSD 1TB and increase this pool? Like convert from zfs mirror to zfs raid 5?
Thanks.

 

[Folke]

Hi,
expanding a vdev is not (yet) possible [0] and I think a transition from a mirror to a zraid won't be in the future. You could add the drive as its own vdev to the pool, but that would negate the redundancy, because the different vdevs are basically handled like a raid0. If you had another 1TB SSD, you could add the new ones as a new mirror vdev and have effectively a Raid10. This would also be the best option for performance, since a zraid1 would act like a single disk IOPS wise.

I hope this clears things up!

[0] https://arstechnica.com/gadgets/2021/06/raidz-expansion-code-lands-in-openzfs-master/

 

[UdoB]

To enlarge the capacity you can replace those disks by larger ones.

Be careful and read some documentation before you try it, there are some generic and some PVE specific pitfalls - but it works reliably.

 

[Dunuin]

And keep in mind that you are using QLC consumer SSDs. Terrible choice for a ZFS pool. My PVE already killed multiple of those.
What I would do is destroying that pool, use both as LVM-Thin without raid as single disk and make sure to have proper backups (like getting a dedicated server for bare-metal PBS). This would also double your storage and with the money saved you could buy disks for those backups.

 

[Dexter23]

hi guys thanks for asking
i'm going to buy two another ssd enterprise and move and create another zfs mirror and move the vm disk on this new pool, the old pool contain only the proxmox installation.