coSwapperd

This script will create swap.swp file in usb STORAGE_NAME volume for enable swap memory, running every UPDATE_INTERVAL minutes.

Script uses some internal witchery deep in the firmware (for now) allowing run scripts at every boot. If you are using Asuswrt-Merlin you don't need this because Merlin firmware can run scripts from JFFS partition. Sadly, Asuswrt-Merlin is not available for every Asus router (for very good reasons). This script is intended for that unsupported devices. Only tested on Asus RT-AC52U B1 (firmware 3.0.0.4.380.10760 from January 2019).

Getting Started

Prerequisites

Hardware

• Asus router with USB and running AsusWRT.
• USB drive.

Software

• USB drive must be formatted in a supported filesystem. It must be properly mounted.

Installing

1. Place script at USB root.
2. Edit needed variables with usb name and desired swap file size in kilobytes:

STORAGE_NAME="usb8gb"
SWAP_SIZE="524288"

Usage

Place script at usb root. Login router via SSH and execute:

cd /tmp/mnt/YOUR_USBSTORAGE_NAME
chmod +x coSwapperd.sh
./coSwapperd.sh -e

Available options

-i | --initcheck Initial check. Mount point reachable check.

-e | --enable Enables script autorun.

-d | --disable Disables script autorun.

-c | --clean Removes autorun support files.

-s | --start Starts script itself.

Script behaviour

You can set some variables to customize script behaviour:

• UPDATE_INTERVAL. Sets time in minutes between script runs. It must be set before enabling script.
• SWAP_SIZE. Sets swap file size in kilobytes.

Authors

• lolost - sleepingcoconut.com

License

This project is licensed under the Zero Clause BSD license.