[ANNOUNCE] udev 143 release

[ANNOUNCE] udev 143 release

[Kay Sievers]

Here comes a new udev version. Thanks to all who have contributed to
this release.

The tarball can be found here:
 ftp://ftp.kernel.org/pub/linux/utils/kernel/hotplug/

The development repository can be found here:
 http://www.kernel.org/git/?p=linux/hotplug/udev.git;a=summary

The ChangeLog can be found here:
 http://www.kernel.org/git/?p=linux/hotplug/udev.git;a=blob;hb=HEAD;f=ChangeLog


udev 143
====
Bugfixes.

The configure options have changed because another library needs to be
installed in a different location. Instead of exec_prefix and udev_prefix,
libdir, rootlibdir and libexecdir are used. The Details are explained in
the README file.

Event processes now get re-used after they handled an event. This reduces
the number of forks and the pressure on the CPU significantly, because
cloned event processes no longer cause page faults in the main daemon.
After the events have settled, a few worker processes stay around for
future events, all others get cleaned up.

To be able to use signalfd(), udev depends on kernel version 2.6.25 now.
Also inotify support is mandatory now to run udev.

The format of the queue exported by the udev damon has changed. There is
no longer a /dev/.udev/queue/ directory. The current event queue can be
accessed with udevadm settle and libudedv.

Libudev does not have the unstable API header anymore. From now on,
incompatible changes will be handled by bumping the library major version.

To build udev from the git tree gtk-doc is needed now. The tarballs will
build without it, and contain the pre-built documentation. An online copy
is available here:
  http://www.kernel.org/pub/linux/utils/kernel/hotplug/libudev/
  http://www.kernel.org/pub/linux/utils/kernel/hotplug/gudev/

The tools from the udev-extras repository have been merged into the main
udev repository. Some of the extras have larger external dependencies, and
they can be disabled with the configure switch --disable-extras if needed.

Re: [ANNOUNCE] udev 143 release

[Gabor Z. Papp]

* Kay Sievers <kay.sievers@vrfy.org>:

| udev 143
| ====

Now
        mount -n -o mode\a55,size\x1024 -t tmpfs tmpfs /dev

isn't enough, udev complains about free space:

2009 Jun 30 14:28:19 <daemon.err> hostname udevd[996]: failed to create queue file: No space left on device

Is it safe to mount /dev/ without size limitations?

Re: [ANNOUNCE] udev 143 release

[Kay Sievers]

On Tue, Jun 30, 2009 at 14:36, Gabor Z. Papp<gzp@papp.hu> wrote:
> * Kay Sievers <kay.sievers@vrfy.org>:
>
> | udev 143
> | ====
>
> Now
>        mount -n -o mode\a55,size\x1024 -t tmpfs tmpfs /dev
>
> isn't enough, udev complains about free space:

Yeah, it will be really hard to make udev work with one kilobye of ram. :)

Kay