Systemd incompatible with mounted /usr [LWN.net]

Systemd incompatible with mounted /usr

Posted Mar 21, 2011 16:22 UTC (Mon) by gvy (guest, #11981)
In reply to: Systemd incompatible with mounted /usr by mezcalero
Parent article: Quotes of the week

# find /usr -name '*udev*'
[.../usr/share/{vim,doc,man}...]
/usr/libexec/ConsoleKit/run-seat.d/udev-acl.ck

And the rest is under /{etc,lib}/udev here on ALT Linux.

Could you please elaborate on "the udev rules are the ones needed /usr", or perhaps just file a bug proper?

> Hence you would want to mount /usr both before and after starting udev.
> Which logic shows is not possible.
Heh. There's a theory for inventor's problems, you might enjoy reading up on that, as well as on formal logic; see at least http://en.wikipedia.org/wiki/TRIZ -- in this particular case, the "visible" controversy is solved by "doing beforehand", that is, moving udev rules from /usr into root filesystem. No rocket science at all.

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Systemd incompatible with mounted /usr

Posted Apr 18, 2011 20:24 UTC (Mon) by nix (subscriber, #2304) [Link]

Some rules (a very few, but perhaps more in time) want the PCI and USB ID databases, as well. Of course this should be fixed by eliminating /usr and annoying everyone who has to reinstall their entire systems, rather than by, I dunno, introducing /share, moving the ID databases there, and leaving a symlink where they came from.

As you know, "do things the hugely inconvenient way" is the new Linux slogan.

Systemd incompatible with mounted /usr

Posted Apr 19, 2011 1:06 UTC (Tue) by jrn (subscriber, #64214) [Link]

I thought the drive to make a /usr -> / symlink possible came from GNU Hurd developers in the hope of making PATH=/bin a viable configuration (and thus simplifying the concept of path resolution for users)?