If you load Proxmox 4.0 from OVH or any of their affiliates you end up with a partition scheme that gives you one big logical volume for data that is formatted to EXT3.

That will work but it isn’t desirable. Starting with Proxmox 3.4, support for the ZFS filesystem was added. ZFS is more than just a file system though and as a result it adds in enhanced functionality. In this article I will be walking through how to transition from the OVH, KimSufi, SoYouStart default partition layout on an existing system running Proxmox to a layout with ZFS. (more…)