qcow2
VMware testing on Ubuntu 14.04 via the Phoronix Test Suite.


qcow2: 

	Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 2.80GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM, Disk: 13GB, Graphics: VMware SVGA II, Audio: Intel 82801FB/FBM/FR/FW/FRW, Network: Red Hat Virtio device

	OS: Ubuntu 14.04, Kernel: 3.16.0-38-generic (x86_64), Compiler: GCC 4.8, File-System: ext4, System Layer: VMware

lvm: 

	Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 2.80GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM, Disk: 8GB, Graphics: VMware SVGA II, Audio: Intel 82801FB/FBM/FR/FW/FRW, Network: Red Hat Virtio device

	OS: Ubuntu 14.04, Kernel: 3.16.0-38-generic (x86_64), Compiler: GCC 4.8, File-System: ext4, System Layer: VMware


Apache Benchmark 2.4.7
Static Web Page Serving
Requests Per Second > Higher Is Better
qcow2 . 8796.02 |==============================================================
lvm ... 8859.10 |==============================================================