readme

README.md

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+# Proxmox Backup Server to SMB Backup Script
+
+A robust and efficient backup solution for Proxmox Backup Server (PBS) that securely transfers backups to an SMB share. This script provides incremental backups, efficient space management, and detailed logging.
+
+## Features
+
+- 🔄 Incremental backups with file change detection
+- 📦 Chunked backup creation for large datasets
+- 💾 Efficient space management with configurable chunk sizes
+- 🔍 Detailed logging and progress tracking
+- 🔒 Secure SMB authentication
+- 🧹 Automatic cleanup of old backups
+- 🔁 Restore functionality
+- 📊 SQLite database for tracking file changes
+- ⚡ Optimized performance with batch processing
+
+## Prerequisites
+
+- Linux-based system (tested on Proxmox Backup Server)
+- Required packages:
+  - `sqlite3`
+  - `7zip`
+  - `rsync`
+  - `cifs-utils`
+  - `pv` (optional, for progress bars)
+
+## Installation
+
+1. Clone the repository:
+```bash
+git clone https://git.pandem.fr/gabriel/ProxmoxBackupsServer-to-SMB.git
+cd ProxmoxBackupsServer-to-SMB
+```
+
+2. Make the script executable:
+```bash
+chmod +x backups2smb.sh
+```
+
+3. Configure the script by editing the configuration section at the top of `backups2smb.sh`:
+```bash
+# === Config ===
+SERVER_IP="192.168.2.194"        # Your SMB server IP
+SHARE_NAME="PBS-back"            # SMB share name
+MOUNT_POINT="/mnt/smb-backup"    # Local mount point
+CREDENTIALS_FILE="/root/.smb-pbs-cred"  # SMB credentials file
+CHUNK_SIZE="10G"                 # Size of backup chunks
+MIN_SPACE_REQUIRED="5G"          # Minimum required space in /tmp
+```
+
+4. Create the credentials file:
+```bash
+echo "username=your_username" > /root/.smb-pbs-cred
+echo "password=your_password" >> /root/.smb-pbs-cred
+chmod 600 /root/.smb-pbs-cred
+```
+
+## Usage
+
+### Regular Backup
+
+Run the script without any arguments to perform a regular backup:
+
+```bash
+./backups2smb.sh
+```
+
+### Restore from Backup
+
+To restore from the latest backup:
+
+```bash
+./backups2smb.sh -u
+```
+
+## Configuration Options
+
+The script can be customized by modifying the following variables in the configuration section:
+
+- `SERVER_IP`: IP address of your SMB server
+- `SHARE_NAME`: Name of the SMB share
+- `MOUNT_POINT`: Local mount point for the SMB share
+- `CREDENTIALS_FILE`: Path to the SMB credentials file
+- `CHUNK_SIZE`: Size of backup chunks (e.g., "10G")
+- `MIN_SPACE_REQUIRED`: Minimum required space in /tmp
+- `LOG`: Path to the log file
+- `SRC`: Directories to backup (space-separated)
+
+## Logging
+
+The script maintains detailed logs at `/var/log/pbs-smb-backup.log`. Logs older than 7 days are automatically cleaned up.
+
+## Error Handling
+
+The script includes comprehensive error handling for:
+- Network connectivity issues
+- SMB mount failures
+- Space constraints
+- Process cleanup
+- Database operations
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit a Pull Request.
+
+## Contact
+
+For support or questions, please contact:
+- Email: gabriel@pandem.fr
+
+## License
+
+This project is licensed under the MIT License - see the LICENSE file for details.
+
+## Acknowledgments
+
+- Thanks to the Proxmox team for their excellent backup server
+- Inspired by various backup solutions in the Linux community