Re: [atomic-devel] Fedora 26 change: using overlayfs as default

[Colin Walters <walters verbum org>]

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.