Future Plans for LVM-thin Replication Support in Proxmox VE?

[UK SPEED]

Hello Proxmox team,

First of all, thank you for the great work on Proxmox VE.

I have a question regarding future storage replication support.

Currently, Proxmox replication officially supports ZFS only. Many hosting providers and VPS environments use LVM-thin or ext4/XFS storage because of lower RAM usage and better density, especially in high-performance NVMe environments.

Is there any future plan or roadmap consideration for:

• LVM-thin replication
• block-level incremental replication
• dirty bitmap replication
• or replication support for non-ZFS local storage?

Even experimental or long-term plans would be interesting to know.

Thank you.

 

[LnxBil]

better density, especially in high-performance NVMe environments.

I would be interessted in knowing more about that. I cannot imagine how to pack more than with ZFS's compression and deduplication.

 

[UK SPEED]

I understand what you mean. ZFS compression and deduplication are extremely powerful already, and I do not think the goal is necessarily to “pack more” data than ZFS.

The interest from many Proxmox users is more about bringing native replication, snapshot shipping, and HA-style workflows to storage types like LVM-thin, which are often preferred for their simplicity, lower RAM usage, and very fast raw I/O performance.

So the idea is not really to replace ZFS, but to give users more flexibility depending on their workload and infrastructure design.

 

[Johannes S]

Replication relies on zfs send/receive feature, afik lvm and lvm/thin doesn't have something like this.

And I don't buy the vps Argument? Why would you rent one large vserver for Ptoxmox and suffering the performance Hit of nested virtualization if you could create several small vservers instead for your workloads ?