Storage agnostic incremental backups tools, building blocks for creating incremental backups utilities.
- Use python-librsync to compute patch/diff.
- Rely on dirtools (for .gitignore like exlusion, and helpers it provides)
This project is initially designed as a foundation for bakthat incremental backups plugin, so the implementation of features like signature, encryption, storage, management of full/incremental backups is up to you.
A full backup results in three files:
- A SigVault archive (stored in your cache, but also uploaded)
- An archive containing your backups
- A JSON file containing directory state
An incremental backup results in 2-4 file depending on the changes:
- A SigVault archive (stored in your cache, but also uploaded)
- An archive containing created files if any
- An archive containing deltas files if any
- A JSON file containing directory state
A SigVault is a tarfile wrapper used to store files signatures, used later to compute deltas.
A new one is created for each full/incremental backups, there are stored remotely but it's also saved in the cache, so we don't need to download them each time we want to perform a backup.
When looking for a signature, a search is performed in each SigVault, starting from the most recent until we found it.
$ sudo apt-get install librsync-dev $ pip install incremental-backups-tools
from incremental_backups_tools import full_backup, incremental_backup, restore_backup
backups_files_report = full_backup('/path/to/backup')
# After some times
backups_files_report = incremental_backup('/path/to/backup')
# Something happened, you must restore from all the archives
restore_backup('backup', '/path/to/backup_restored')Everything is store in your default temporary directory, but you can set a different directory:
$ export TMP=/my/new/tmp/dir
* Delete old SigVault when a new full backup is performed.
* Restore oldest backup (match a datetime for selecting full backup to start with)
Copyright (c) 2013 Thomas Sileo
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