Fix Zram disabled and swapfile configured

disable_zram.sh

#!/bin/bash
set -e

echo "🔧 Disabling zram swap..."

# 1. Turn off zram if active
if swapon --summary | grep -q zram0; then
    echo "🛑 Turning off /dev/zram0 swap..."
    sudo swapoff /dev/zram0 || echo "⚠️ Failed to swapoff /dev/zram0"
fi

# 2. Disable the systemd zram setup service
if systemctl list-units --type=service | grep -q "[email protected]"; then
    echo "🚫 Disabling [email protected]..."
    sudo systemctl disable [email protected] || true
fi

# 3. Remove zram-generator config if exists
if [ -f /etc/systemd/zram-generator.conf ]; then
    echo "🧹 Removing zram-generator configuration..."
    sudo rm -f /etc/systemd/zram-generator.conf
fi

# 4. Ensure /swapfile is in use and configured
if [ ! -f /swapfile ]; then
    echo "📦 Creating 8G /swapfile..."
    sudo fallocate -l 8G /swapfile
    sudo chmod 600 /swapfile
    sudo mkswap /swapfile
    sudo swapon /swapfile
else
    echo "📦 /swapfile already exists."
    sudo swapon /swapfile || echo "⚠️ Swapfile already active or failed to enable"
fi

# 5. Add /swapfile to /etc/fstab if not present
if ! grep -q "/swapfile" /etc/fstab; then
    echo "✍️ Adding /swapfile to /etc/fstab..."
    echo '/swapfile none swap defaults 0 0' | sudo tee -a /etc/fstab
fi

echo "✅ Zram disabled and swapfile configured."