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systemd: Add mkinitcpio support to plymouth-switch-root-initramfs.service

Browse source 
plymouth-switch-root-initramfs.service commands plymouth to release
rootfs to allow the shutdown ramfs to unmount rootfs. However, it only
integrates with dracut. Arch Linux uses mkinitcpio by default, and it
uses shutdown ramfs when layered block storage (e.g. LUKS) is used for
rootfs. Therefore, it fails to unmount rootfs on shutdown if LUKS and
plymouth are used together.

Add a new trigger for plymouth-switch-root-initramfs.service to start
when /run/initramfs/shutdown exists (/run/initramfs/bin/sh may not exist
with mkinitcpio when systemd-based initramfs is used), and add a
dependency to start it after mkinitcpio generates the shutdown ramfs.
This commit is contained in:
Maxim Mikityanskiy 2022-10-01 14:52:19 +03:00 • committed by Ray Strode
parent c09c651afe
commit 2f12aa4c5d
1 changed files with 3 additions and 2 deletions
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5
systemd-units/plymouth-switch-root-initramfs.service.in
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@ -4,8 +4,9 @@ DefaultDependencies=no
# dracut-shutdown.service restores the initramfs when it is _stopped_
# use Conflicts to make sure its ExecStop has run before we do
Conflicts=dracut-shutdown.service
After=plymouth-halt.service plymouth-reboot.service plymouth-poweroff.service plymouth-kexec.service dracut-shutdown.service
ConditionPathExists=/run/initramfs/bin/sh
After=plymouth-halt.service plymouth-reboot.service plymouth-poweroff.service plymouth-kexec.service dracut-shutdown.service mkinitcpio-generate-shutdown-ramfs.service
ConditionPathExists=|/run/initramfs/bin/sh
ConditionPathExists=|/run/initramfs/shutdown
[Service]
Type=oneshot