LVM now has built-in caching support built atop DM-Cache so that logical volumes can be turned into cache devices. Those curious about LVM's cache feature can checkout Richard Jones' blog for a wealth of information and early tests of using the LVM Cache feature.
Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.