On Wednesday, April 6, 2016 4:58:05 PM CEST, M. J. Everitt wrote:
What, if any, is the benefit of squashing /usr out of the equation? I happen to have a few workstations that load their /usr off an NFS share presently,
This is precisely one case where I see benefits: no need to correlate / and /usr.
With the current way, this setup is broken if you don't pay attention: glibc is not backwards compatible (that is, stuff built for glibc 2.22 is not guaranteed to work with 2.21 and less), but you have glibc in /lib and stuff in /usr linking and dynamically loading it. If your nfs server updates glibc, you have to update every / on every of your workstations or fear the consequences of running binaries built for 2.22 but running against an older version.
See https://fedoraproject.org/wiki/Features/UsrMove for a more complete discussion.