FM / 90btrfs

/usr/lib/dracut/modules.d/90btrfs

Name	Size	Mode	Actions
80-btrfs.rules	270	0644	edit dl rm
btrfs_device_ready.sh	467	0755	edit dl rm
btrfs_finished.sh	597	0755	edit dl rm
btrfs_timeout.sh	142	0755	edit dl rm
module-setup.sh	1238	0755	edit dl rm

Edit: /usr/lib/dracut/modules.d/90btrfs/80-btrfs.rules (270B)

SUBSYSTEM!="block", GOTO="btrfs_end" ACTION!="add|change", GOTO="btrfs_end" ENV{ID_FS_TYPE}!="btrfs", GOTO="btrfs_end" RUN+="/sbin/btrfs device scan $env{DEVNAME}" RUN+="/sbin/initqueue --finished --unique --name btrfs_finished /sbin/btrfs_finished" LABEL="btrfs_end"