This revision is from 2024/06/24 22:51. You can Restore it.

Two scripts, one is the system service so that the ram disk is re-instated upon reboot, ram volatility is obviously the situation with ram disks and the ram disk script.

Setup RAM disk service on Linux

# Filename: setup-ramdisk.service
# /etc/systemd/system/setup-ramdisk.service
# sudo cp /home/x/ram_disk/setup-ramdisk.service /etc/systemd/system/setup-ramdisk.service
# sudo systemctl daemon-reload
# sudo systemctl enable setup-ramdisk
# sudo systemctl start setup-ramdisk
# After reboot check with df -h | grep ramdisk
# sudo systemctl status setup-ramdisk

[Unit]
Description=Setup RAM disk and start web server
After=network.target

[Service]
Type=oneshot
ExecStart=/home/x/ram_disk/setup-ramdisk.sh
RemainAfterExit=true

[Install]
WantedBy=multi-user.target
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The second script involves keeping a copy of linux as chrooted jail for a user. Alpine Linux is sufficiently small that its works for this purpose. The second program is named schroot, apt-get install schroot. Putting the ram disk in a chroot jail insures we do not use the disk at all, a lib or two could sneak under the radar causing a bottleneck.

#!/bin/bash

# Set variables
RAMDISK_SIZE="1G"
RAM_DISK="/mnt/ramdisk"

# Create the mount point if it doesn't exist
mkdir -p $RAM_DISK

# Mount the RAM disk
mount -t tmpfs -o size=$RAMDISK_SIZE tmpfs $RAM_DISK

# Configure schroot (not part of the script)
# sudo apt-get install schroot
# [jimbo]
# description=Chroot for username
# directory=/mnt/ramdisk
# users=jimbo
# root-groups=root

# Add filesystem
sudo tar -xzf /home/x/ram_disk/alpine-minirootfs-3.20.0-x86_64.tar.gz -C ${RAM_DISK}
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