iozone-test IOZone doesn't support an fs target, so let's see where this goes ceph-iozone: Processor: 2 x Intel Xeon E5-2640 0 @ 2.50GHz (24 Cores), Motherboard: HP ProLiant DL360p Gen8, Chipset: Intel Xeon E5/Core, Memory: 16384MB, Disk: 300GB LOGICAL VOLUME + 4 x 500GB LOGICAL VOLUME, Graphics: Matrox s MGA G200EH, Network: Broadcom NetXtreme BCM5719 Gigabit PCIe OS: Ubuntu 14.04, Kernel: 3.13.0-52-generic (x86_64), File-System: ext4, Screen Resolution: 640x480 IOzone 3.405 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better ceph-iozone . 743.21 |=========================================================