1SYSTEMD-UDEV-SETTLE.SERVICEs(y8s)temd-udev-settle.serSvYiScTeEMD-UDEV-SETTLE.SERVICE(8)
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6 systemd-udev-settle.service - Wait for all pending udev events to be
7 handled
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10 systemd-udev-settle.service
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13 This service calls udevadm settle to wait until all events that have
14 been queued by udev(7) have been processed. It is a crude way to wait
15 until "all" hardware has been discovered. Services may pull in this
16 service and order themselves after it to wait for the udev queue to be
17 empty.
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19 Using this service is not recommended. There can be no guarantee that
20 hardware is fully discovered at any specific time, because the kernel
21 does hardware detection asynchronously, and certain buses and devices
22 take a very long time to become ready, and also additional hardware may
23 be plugged in at any time. Instead, services should subscribe to udev
24 events and react to any new hardware as it is discovered. Services
25 that, based on configuration, expect certain devices to appear, may
26 warn or report failure after a timeout. This timeout should be tailored
27 to the hardware type. Waiting for systemd-udev-settle.service usually
28 slows boot significantly, because it means waiting for all unrelated
29 events too.
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32 udev(7), udevadm(8)
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36systemd 248 SYSTEMD-UDEV-SETTLE.SERVICE(8)