On 10/24/2011 08:27 PM, Miloslav Trmač wrote:
2011/10/24 Michał Piotrowski<mkkp4x4(a)gmail.com>:
> 2011/10/24 Chris Adams<cmadams(a)hiwaay.net>:
>>> * Discussion about https://fedoraproject.org/wiki/Features/UsrMove
>>> (t8m, 17:26:45)
> Cool idea. Next I suggest to stop using
> in F19, and not to create these links on freshly installed systems in F20.
* the FHS?
* "#! /bin/sh" in thousands of existing scripts?
If anything, wouldn't it make more sense to move stuff in the opposite
direction, from /usr/bin to /bin ? "usr" doesn't really mean anything
- originally it was used because the filesystem format couldn't
support more than 64MB(?) in a single volume, so the system had to be
split to / and /usr.
You want your OS in one directory and not split in 4 toplevel directories.
Also, Fedora already sort-of has a system for stateless OS images -
see /etc/sysconfig/readonly-root. What will happen to it?
It does not go away with this feature.
And more importantly, what is the overall benefit to our users? I
can't find anything compelling in the "Benefit to Fedora" section (if
/usr/ can be snapshotted, why not / ?); AFAICT this requires changing
257 packages for mostly aesthetic reasons.
It's not only an aesthetic issue. This enables possibilities, which were
not doable before.
- snapshot /usr (with btrfs)
- hot swap the OS (/usr) with another version
- mount /usr ro and keep the rootfs writeable
- share the _whole_ OS with other machines