I've released a near-production-ready version of pve-moosefs now that adds support for MooseFS Block Device (mfsbdev). This allows for high performance VMs that bypass FUSE and qcow2 entirely, suitable for database workloads...
Hello folks! I've cleaned up my plugin and it's now mostly ready for consumption.
Check it out here - https://github.com/Zorlin/pve-moosefs
Please open an issue on https://github.com/Zorlin/pve-moosefs if you have any issues.