udev.conf - Man Page

These files contain configuration options for systemd-udevd(8)​. The syntax of these files is very simple: a list of assignments, one per line​. All empty lines or lines beginning with "#" are ignored​.

The following options can be set:

udev_log=

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

Note
This option is also honored by udevadm(8)​.

Added in version 216​.

children_max=

An integer​. The maximum number of events executed in parallel​. When unspecified or 0 is specified, the maximum is determined based on the system resources​.

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

Added in version 240​.

exec_delay=

An integer​. Delay the execution of each RUN{program} parameter 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​.

Added in version 240​.

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​.

Added in version 240​.

resolve_names=

Specifies 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​.

Added in version 240​.

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​.

Added in version 246​.

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

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

systemd.directives(7), systemd.index(7), systemd.system-credentials(7), systemd-udevd.service(8), udevadm(8).

The man page udev.conf.d(5) is an alias of udev.conf(5).