udev.conf(5) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON

UDEV.CONF(5)                      udev.conf                     UDEV.CONF(5)

NAME         top

       udev.conf - Configuration for device event managing daemon

SYNOPSIS         top

       /etc/udev/udev.conf

DESCRIPTION         top

       systemd-udevd(8) expects its main configuration file at
       /etc/udev/udev.conf. It consists of a set of variables allowing the
       user to override default udev values. All empty lines or lines
       beginning with '#' are ignored. The following variables can be set:

       udev_log=
           The log level. Valid values are the numerical syslog priorities
           or their textual representations: err, info and debug.

       children_max=
           An integer. The maximum number of events executed in parallel.

           This is the same as the --children-max= option.

       exec_delay=
           An integer. Delay the execution of RUN instructions by the given
           number of seconds. This option might be useful when debugging
           system crashes during coldplug caused by loading non-working
           kernel modules.

           This is the same as the --exec-delay= option.

       event_timeout=
           An integer. The number of seconds to wait for events to finish.
           After this time, the event will be terminated. The default is 180
           seconds.

           This is the same as the --event-timeout= option.

       resolve_names=
           Specifes when systemd-udevd should resolve names of users and
           groups. When set to early (the default), names will be resolved
           when the rules are parsed. When set to late, names will be
           resolved for every event. When set to never, names will never be
           resolved and all devices will be owned by root.

           This is the same as the --resolve-names= option.

       timeout_signal=
           Specifies a signal that systemd-udevd will send on worker
           timeouts. Note that both workers and spawned processes will be
           killed using this signal. Defaults to SIGKILL.

       In addition, systemd-udevd can be configured by command line options
       and the kernel command line (see systemd-udevd(8)).

SEE ALSO         top

       systemd-udevd(8), udev(7), udevadm(8)

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2020-08-13.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-08-11.)  If you discover any rendering problems in
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       improvements to the information in this COLOPHON (which is not part
       of the original manual page), send a mail to man-pages@man7.org

systemd 246                                                     UDEV.CONF(5)

Pages that refer to this page: 30-systemd-environment-d-generator(7)systemd.directives(7)systemd.index(7)systemd-udevd(8)systemd-udevd-control.socket(8)systemd-udevd-kernel.socket(8)systemd-udevd.service(8)