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

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON

SYSTEMD-UDEV-SETTLE.SERVICE(8)-udev-settle.serviceUDEV-SETTLE.SERVICE(8)

NAME         top

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

SYNOPSIS         top

       systemd-udev-settle.service

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

       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 2021-04-01.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2021-04-01.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or 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 248                               SYSTEMD-UDEV-SETTLE.SERVICE(8)

Pages that refer to this page: systemd.directives(7)systemd.index(7)udevadm(8)