DistroClone Backup & Restore

In the development of SysLinuxOS, one recurring need was a reliable way to snapshot and restore a system quickly — not just for users, but also during testing and ISO development.
That is how DistroClone Backup & Restore was born: a graphical, incremental backup tool designed specifically for Debian-based systems.

It is the companion utility to DistroClone Live ISO Builder, and both tools will ship together as part of the SysLinuxOS toolchain in upcoming releases. They are designed to work independently, but their real strength emerges when used together — something I will cover in a future article.

What DistroClone Backup Does

DistroClone Backup & Restore is a GTK/YAD-based graphical frontend that creates and manages backups of the system root filesystem (rootfs) across Debian-based distributions such as:

• Debian
• Ubuntu
• Linux Mint / LMDE
• Elementary OS
• Zorin OS
• SysLinuxOS
• and derivatives

It allows you to create a full baseline backup, then maintain it with fast incremental updates. If something breaks — a bad update, a misconfigured service, or an experimental package — the system can be restored in minutes.

When the backup cache is stored on btrfs, the tool also enables versioned snapshots with configurable retention.

Key Features

Full system clone

The first backup is a complete rsync clone of the root filesystem. This becomes the reference state for all future incremental runs.

Incremental backups

Subsequent backups transfer only modified files, making them both fast and space-efficient.

Safe system restore

During restore operations, critical user data is always protected:

• /home
• /root
• /boot/efi

Built-in scheduler

Backups can be scheduled directly from the GUI (daily, weekly, monthly) without manually editing crontab.

Btrfs snapshot versioning

If the cache directory resides on a btrfs filesystem, each backup generates a read-only snapshot, allowing rollbacks to previous states.

Desktop notifications

Optional notify-send alerts inform you when scheduled backups complete.

Flexible backup destination

The cache directory can be placed on:

• internal disks
• external USB drives
• NFS mounts for offsite storage

Real-time logging

All operations are streamed live in the GUI and stored in:

Multilingual interface

The interface language is automatically selected based on the system LANG variable. Currently supported:
English, Italian, German, French, Spanish.

Requirements

• A Debian-based system
  (Debian 12+, Ubuntu 22.04+, Mint, LMDE, Elementary, Zorin OS 18, SysLinuxOS)
• 5–15 GB of free space on the backup destination
• Automatically installed dependencies:
  
  • yad
  • rsync
  • imagemagick

Optional but recommended:

• btrfs-progs for snapshot versioning

Installation

Download the latest .deb package:

Install it:

First Launch

You can start the application from the system menu or directly from a terminal

The main dashboard shows:

• detected distribution
• running kernel
• cache status
• active scheduled jobs

Configuring the Backup Cache

By default, backups are stored under /mnt. This can be changed in Settings, allowing you to point the cache to an external drive or a network mount.

The tool automatically creates the working directory:

.rootfs_cache

Creating the First Backup

A full backup must be performed before incremental backups can be used.

When you click Full Backup, the tool clones the root filesystem into:

<cache-dir>/<distro>_live/.rootfs_cache

Scheduling Automatic Backups

From the scheduler dialog you can define:

• frequency (daily, weekly, monthly)
• execution time
• optional desktop notification

The tool writes the corresponding entry directly into the root crontab, so no manual configuration is required.

A silent incremental run — the same mode used by cron — can be triggered manually with:

Restoring the System

The restore dialog shows:

• backup timestamp
• stored distribution and kernel
• cache size
• protected paths

Once confirmed, rsync runs in reverse, copying files from the cache back into the root filesystem. A reboot is required after completion.

If the cache resides on btrfs, you can instead select Restore from Snapshot and roll back to any previously stored state.

How It Works Internally

From a technical standpoint, the workflow is straightforward and transparent:

1. Full backup
   rsync clones the root filesystem while excluding virtual filesystems (/proc, /sys, /dev), temporary directories, and caches.
2. Incremental backup
   rsync --checksum detects and transfers only modified files compared to the cached baseline.
3. Snapshot creation
   On btrfs, each backup generates a read-only snapshot named:

4. Restore process
   The restore operation is simply rsync executed in reverse, with explicit exclusions for user and boot data.
5. Scheduling
   Cron entries are written programmatically by piping the current crontab through crontab -l and appending the new job.

Part of the DistroClone Ecosystem

DistroClone Backup is not meant to replace tools like Timeshift or full disk imaging solutions. Instead, it fills a specific niche:

• fast rootfs cloning
• incremental state tracking
• tight integration with ISO remastering workflows

This makes it particularly useful for:

• distribution developers
• system integrators
• power users who frequently experiment with their systems

DistroClone Backup & Restore will continue evolving alongside the DistroClone toolchain and SysLinuxOS. Future posts will dive deeper into how the backup cache can be reused directly during ISO generation and system migration.