Re: udev not running new rules

[Peter Gordon <peter@pg-consultants.com>]

On Sun, 2007-08-12 at 16:19 +0200, Kay Sievers wrote:
> On 8/12/07, Peter Gordon <peter@pg-consultants.com> wrote:
> >
> > I am using Debian Etch.
> >
> > I have the directory in /etc/udev/rules.d
> >
> > lrwxrwxrwx 1 root root   20 2007-06-19 16:52 020_permissions.rules -> ../permissions.rules
> > lrwxrwxrwx 1 root root   13 2007-06-19 16:52 udev.rules -> ../udev.rules
> > -rwxr-xr-x 1 root root  138 2007-07-29 14:28 z19_persistent-anet.rules
> > lrwxrwxrwx 1 root root   25 2007-06-19 16:52 z20_persistent-input.rules -> ../persistent-input.rules
> > lrwxrwxrwx 1 root root   19 2007-06-19 16:52 z20_persistent.rules -> ../persistent.rules
> > -rw-r--r-- 1 root root 1070 2007-06-19 17:09 z25_persistent-cd.rules
> > lrwxrwxrwx 1 root root   23 2007-06-26 00:57 z25_persistent-net.rules -> ../persistent-net.rules
> > lrwxrwxrwx 1 root root   12 2007-06-19 16:52 z50_run.rules -> ../run.rules
> > lrwxrwxrwx 1 root root   16 2007-06-19 16:52 z55_hotplug.rules -> ../hotplug.rules
> > lrwxrwxrwx 1 root root   29 2007-06-19 16:52 z75_cd-aliases-generator.rules -> ../cd-aliases-generator.rules
> >
> > Initially, the file ../persistent-net.rules does not exist.
> >
> > The rule z19_persistent-anet.rules is:
> >
> > PROGRAM="/var/www/lib/produce_persistent_rules.pl"
> >
> > The object of the program is to rename one of the NICs, and simply produces a rule
> > SUBSYSTEMS="pci", KERNELS="0000:09:01.0", NAME="ctl"
> >
> > It runs a Perl program that creates the file ../persistent-net.rules.
> >
> > After a reboot, the file is created, but udev claims that it doesn't exist.
> >
> > After a second reboot, udev manages to read the file successfully.
> >
> > Killing udev and restarting doesn't help.
> >
> > It seems that udev firstly checks which files exist. How can I get the new rule set to be run as soon as it is created?
> 
> Rules are just matches/actions for events. Adding or removing rules
> does nothing to any already existent device. Only the next event would
> be processed with the new rules. Does that explain your problem?
> 

I have deleted the soft link as suggested by Marco d'Itri and it didn't
help.

I understand about the already existing device.

If the event for a NIC occurs really early in the udev sequence, it
would seem that the z19_persistent-anet.rules is being run after the NIC
was created. 

I moved z19_persistent-anet.rules to 000z19_persistent-anet.rules to
force it to be the first rule.

It still creates the file, but doesn't manage to use the file until the
following reboot.

So I still don't have a handle on the problem. What would be the best
way to get debugging output?

Regards,

Peter






> Kay


-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >>  http://get.splunk.com/
_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel