On Thu, Jan 5, 2017, at 07:22 PM, Josh Berkus wrote: > Also, performance is MUCH better on PostgreSQL pgbench than devicemapper > is. Like 3X better.
You really should not store databases (or any persistent data) in the container's rootfs. Use kubernetes PVs, etc., or for a real pet database, a host volume pinned to a node with specifically provisioned storage, etc. Even for transient storage I'd use e.g. http://kubernetes.io/docs/user-guide/volumes/#emptydir over just writing into the container's /tmp.
