flashcache

Hi, I assembled a small Proxmox 4.1 cluster (3 Proxmox nodes + 1 NFS server for backup) using 1Gbit ethernet. All 3 nodes run OSDs (1x2T disks) with 10G SSD partitions for Journaling. My VMs use ceph rbd for storage. Now, I want to use SSDs for caching (either using free space on the...