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https://github.com/troglobit/finit.git
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Joachim Wiberg
0b5c555c7f
This change expands the readiness notification system in Finit with the
native 'pid' style, which will remain the default readiness in Finit 4.x
For systems that want to transition to Finit 5.x early, a global option
to set 'readiness none' in /etc/finit.conf, has been added. This change
the service default notification mode to 'notify:none', which can also
be set by Finit 4.x ('readiness pid') for select services.
Fixes #386.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
54 lines
3.5 KiB
Plaintext
54 lines
3.5 KiB
Plaintext
# System hotplug handled by udev, mdevd, or mdev (preferred order)
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#
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# Your system usually has either udevd, mdev, or mdevd. They probe the system
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# for devices, loading modules and any firmware needed. Since the bootstrap
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# often needs to be synchronized carefully, we suggest using your system log
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# daemon as the barrier for all other services. E.g.:
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#
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# service if:udevd <run/udevadm:5/success> [S0123456789] syslogd -F -- System log daemon
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# service if:mdev <run/coldplug/success> [S0123456789] syslogd -F -- System log daemon
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# service if:mdevd <run/coldplug/success> [S0123456789] syslogd -F -- System log daemon
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#
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# This provdes a <pid/syslogd> condition that can act as a barrier for all
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# other services. Notice the `if:` statement and the condition for starting
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# syslogd is only considered if either udevd or mdev (service) is loaded and
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# is guaranteed to run after each respective run stanza have completed.
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#
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# Override this file by copying it to /etc/finit.d/, using the same name, then
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# change the contents any way you like, it can even be empty.
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# Check for systemd-udevd and eudev, if we find both, we opt for the latter.
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service nowarn [S12345789] cgroup.system name:udevd notify:none pid:udevd log /lib/systemd/systemd-udevd -- Device event daemon (udev)
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service nowarn [S12345789] cgroup.system name:udevd notify:none pid:udevd log udevd -D -- Device event daemon (udev)
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# Wait for udevd to start, then trigger coldplug events and module loading.
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# The last 'settle' call waits for it to finalize processing all uevents.
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run nowarn if:udevd cgroup.init :1 [S] <pid/udevd> log udevadm settle -t 0 --
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run nowarn if:udevd cgroup.init :2 [S] <pid/udevd> log udevadm control --reload --
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run nowarn if:udevd cgroup.init :3 [S] <pid/udevd> log udevadm trigger -c add -t devices -- Requesting device events
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run nowarn if:udevd cgroup.init :4 [S] <pid/udevd> log udevadm trigger -c add -t subsystems -- Requesting subsystem events
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run nowarn if:udevd cgroup.init :5 [S] <pid/udevd> log udevadm settle -t 30 -- Waiting for udev to finish
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# If udevd is not available, check for mdevd. Unlike plain 'mdev -df', the
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# mdevd-coldplug process exits when mdevd has completed. So the condition
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# <run/coldplug/success> (same as for plain mdev below) can be relied on as a
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# barrier for services that, e.g., need to probe for switchcore ports or PHYs
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# that require firmware loading before they show up.
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service nowarn conflict:udevd,mdev cgroup.init notify:none if:!udevd \
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[S12345789] notify:s6 mdevd -O 4 -D %n -- Device event daemon (mdevd)
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run nowarn conflict:udevd,mdev cgroup.init name:coldplug <service/mdevd/ready> \
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[S] mdevd-coldplug -- Cold plugging system
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# If neither udevd or mdevd are available, fall back to mdev. The new daemon
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# mode calls `mdev -s` internally but does not create a PID file when that is
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# done, so synchronization with coldplug is fragile.
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service nowarn conflict:udevd,mdevd cgroup.init notify:none if:!udevd,!mdevd \
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[S12345789] mdev -df -S -- Device event daemon (mdev)
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# Trigger a replay of all uevents from boot, before userspace was up and the
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# filesystem mounted. Compared to udevd, we don't know when 'mdev -df' has
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# finished processing all events, i.e., depending on <run/coldplug/success> is
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# not an indicator of all devices having been (re)discovered and fully set up.
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run nowarn conflict:udevd,mdevd cgroup.init name:coldplug if:mdev <service/mdev/running> \
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[S] @pkglibexecdir@/coldplug -- Cold plugging system
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