# LVM Block-Level Backup Tool

## What This Does

This tool performs a **proper** LVM snapshot backup by:

1. ✅ Creating consistent LVM snapshots of your internal drive
2. ✅ Cloning entire volumes **block-for-block** to external drive
3. ✅ Creating an exact, bootable copy of your system
4. ✅ Using full drive capacity efficiently

## Why This Is Better

- **Fast**: Block-level copying is much faster than file copying
- **Complete**: Exact bit-for-bit copy including all metadata
- **Bootable**: External drive can boot your system directly
- **Space Efficient**: Uses full drive capacity, no filesystem overhead
- **Consistent**: Snapshots ensure data consistency during backup

## Usage

```bash
# Simple one-command backup
sudo ./lvm_block_backup.sh
```

## Requirements

- Both drives must have LVM setup
- External drive volume group: `migration-vg`
- Internal drive volume group: `internal-vg`
- At least 6GB free space for snapshots

## What Gets Backed Up

- **Root volume**: Complete system, applications, configurations
- **Home volume**: All user data (including encrypted LUKS)
- **Boot volume**: Kernels, bootloader, boot configuration

## Result

After backup, your external drive contains an exact copy that can:
- Boot independently from BIOS/UEFI menu
- Be mounted to access files
- Serve as complete system recovery

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**Note**: The `old_scripts/` directory contains 40+ previous backup attempts that didn't work properly. This single script replaces all of them.