flectra/addons/point_of_sale/tools/posbox/configuration/setup_ramdisks.sh

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#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail
# set -o xtrace
create_ramdisk () {
ORIGINAL="${1}"
RAMDISK="${ORIGINAL}_ram"
SIZE="${2}"
echo "Creating ramdisk for ${1} of size ${SIZE}..."
mount -t tmpfs -o size="${SIZE}" tmpfs "${RAMDISK}"
rsync -a --exclude="swap" --exclude="apt" --exclude="dpkg" --exclude=".mozilla" "${ORIGINAL}/" "${RAMDISK}/"
mount --bind "${RAMDISK}" "${ORIGINAL}"
}
echo "Creating ramdisks..."
create_ramdisk "/var" "128M"
create_ramdisk "/etc" "16M"
create_ramdisk "/tmp" "16M"
# bind mount / so that we can get to the real /var and /etc
mount --bind / /root_bypass_ramdisks