systemd-udev-settle.service(8) — Linux manual page



NAME         top

       systemd-udev-settle.service - Wait for all pending udev events to be

SYNOPSIS         top


DESCRIPTION         top

       This service calls udevadm settle to wait until all events that have
       been queued by udev(7) have been processed. It is a crude way to wait
       until "all" hardware has been discovered. Services may pull in this
       service and order themselves after it to wait for the udev queue to
       be empty.

       Using this service is not recommended.  There can be no guarantee
       that hardware is fully discovered at any specific time, because the
       kernel does hardware detection asynchronously, and certain buses and
       devices take a very long time to become ready, and also additional
       hardware may be plugged in at any time. Instead, services should
       subscribe to udev events and react to any new hardware as it is
       discovered. Services that, based on configuration, expect certain
       devices to appear, may warn or report failure after a timeout. This
       timeout should be tailored to the hardware type. Waiting for
       systemd-udev-settle.service usually slows boot significantly, because
       it means waiting for all unrelated events too.

SEE ALSO         top

       udev(7), udevadm(8)

COLOPHON         top

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systemd 246                                   SYSTEMD-UDEV-SETTLE.SERVICE(8)

Pages that refer to this page: 30-systemd-environment-d-generator(7)systemd.directives(7)systemd.index(7)udevadm(8)