void-minecraft-usb/dracut-modules/90void-usb/overlay.sh

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#!/bin/bash
mkdir /run/void-usb/overlay
mount -t tmpfs -o size=4g,mode=755 none /run/void-usb/overlay
mkdir /run/void-usb/overlay/upper
mkdir /run/void-usb/overlay/work
mount -t overlay -o lowerdir=/sysroot,upperdir=/run/void-usb/overlay/upper,workdir=/run/void-usb/overlay/work none /sysroot