RaidPuzzler

Reconstruction of software- and hardware raids can be tricky when you dont know raid level, discs order, stipe size, left/right-symetric, etc. RaidPuzzer tries a completly different approch. It searches for images and displays them like a puzzle:

While rearranging parameters the image gives feedback how far off they are. When done the resulting image can be created.

Getting Started

• To try RaidPuzzler do:
  • Create and start a linux software raid:
    • for i in {0..5}; do truncate -s 30M raid$i.img; done
    • for i in {0..5}; do losetup /dev/loop$i raid$i.img; done
    • mdadm --create /dev/md87 --level=5 --raid-devices=6 /dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3 /dev/loop4 /dev/loop5
    • mkfs.ext4 /dev/md87
  • Mount
    • mount /dev/md87 /mnt
  • Copy some jpeg images onto raid
  • Dismount
    • umount /mnt
  • Unloop
    • for i in {0..5}; do losetup -d /dev/loop$i; done
  • Open in RaidPuzzler
  • Puzzle away
  • Save disk image
  • Recover all data from disk image.

Limitations

• Not Tested with large files (>100MB).
• No or limited error handling
• Only raid 5 is supported
• No clean code
• No unit or integration tests
• No documentation

Author

• Bernd Herzog - bernd-herzog

License

This project is licensed under the MIT License - see the LICENSE.md file for details