On Thu, 30 Apr 2015, Ondrej Valousek wrote:
Yes, I am using it heavily, but not for /etc. I need /etc to stay read-only so that it could be shared by multiple compute nodes.
You can effectively do it for single files. On CentOS you can look at rc.sysinit, and the "mount_files" function.
You'll not /etc/rwtab lists things like /etc/resolv.conf, so you don't have to hit all of /etc.
jh