GlusterFS: Permissions for brick

When setting up a GlusterFS what are the requirments for the brick i.e. the directory on the gluster server in terms of

  • permissions
  • ownership

I know that gluster is fully POSIX-compliant but I was wondering how the brick on each server shall be configured so that the gluster volume is usable by a gluster client. Currently my bricks are configured as this:

# ls -l /data/gluster/ total 0 drwxr-xr-x 7 root root 86 Dec 30 19:54 brick1