On Fri, Jan 11, 2013 at 8:04 AM, walt <w41...@gmail.com> wrote: > This seems to me like very happy news indeed, but I'm interested in contrary > opinions. There's a recent thread discussing how udev-197 breaks lvm2, but > that's a trivial fix once you know about it. > > The problem is caused because many apps including lvm2 install their udev > config scripts in /usr/lib/udev/rules.d/ (where they never belonged in the > first place IMO) and they should instead now go in /lib/udev/rules.d/. > All you need to do is to re-emerge all of those packages *after* installing > udev-197 and the config scripts will go in the correct place. > > You should do this before rebooting the machine because lvm2 won't work until > its udev scripts are in the correct directory. > > Doesn't this seem to fix the problem with booting a separate /usr partition?
No, because the problem has never been in udev (nor systemd, for that matter). It fixes how *Gentoo* packages udev; probably the devs read the following comment from Lennart (note it was written almost a month ago): https://plus.google.com/u/0/115547683951727699051/posts/jcCjMct3SJ3 Certainly, <=sys-fs/udev-171-r9 didn't use --with-rootprefix in the ebuilds. That's the reason Greg and many others were so dubious about eudev: one of the primary reasons for the fork to exist is supposedly to support a separate /usr without an initramfs... but that has *always* been supported by udev. And systemd, for that matter. systemd/udev prints a warning if it doesn't finds /usr at early boot, but both work in such configuration without any problem (if configured properly by the distribution, which apparently in Gentoo's case wasn't true). So, no, it doesn't "fix" the separate /usr problem, because that has never been a problem of udev nor systemd. And it's not going to be "fixed" by eudev either, for the same reason. But it fixes how udev it's packaged in Gentoo, which is very good news. I haven't upgraded, since I need systemd-197 also (which wasn't yet in the tree yesterday), and I don't use LVM, but I'm wondering if the LVM problem happens when you use an initramfs. I'm guessing it doesn't, since udev should read rules from /lib/udev/rules.d AND /usr/lib/udev/rules.d. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
