Malevolent Cartography About Archive Contact Wiki Bcache and LVM non-destructive setup December 9, 2013 by Quinlan Pfiffer The filesystem-caching tool bcache was recently added to the linux kernel in 3.10. What it allows you to do is cache both reads and writes on an intermediate device for great system performance. I figured now would be a good time to play with it since I managed to pick up a lot of 4GB SSDs on ebay. The few tutorials I’ve found suggest that the drives (mechanical and cache) need to be formatted before use. This isn’t really ideal for my setup. Into blocks. Blocks is a Python 3.3 utility to convert existing block devices and LVMs to bcache devices. It has a pretty good readme which I sugges you at least skim. First of all you’re going to need that actual caching device to be setup first. make-bcache -C /dev/md1 My device is /de...