freezer.engine.rsyncv2.rsyncv2 module¶
Freezer rsync incremental engine
- class freezer.engine.rsyncv2.rsyncv2.Rsyncv2Engine(**kwargs)¶
Bases:
freezer.engine.engine.BackupEngine
- backup_data(backup_path, manifest_path)¶
Execute backup using rsync algorithm.
If an existing rsync meta data for file is available - the backup will be incremental, otherwise will be executed a level 0 backup.
- Parameters
backup_path – Path to backup
manifest_path – Path to backup metadata
- get_fs_meta_struct(fs_meta_path)¶
- get_sign_delta(fs_path, manifest_path, write_queue)¶
Compute the file or fs tree path signatures.
Return blocks of changed data.
- Parameters
fs_path –
manifest_path –
write_queue –
- Returns
- metadata(*args)¶
- property name¶
- Return type
str
- Returns
Engine name
- restore_level(restore_path, read_pipe, backup, except_queue)¶
Restore the provided backup into restore_abs_path.
Decrypt backup content if encrypted. Freezer rsync header data structure:
[ { 'path': '' (path to file), 'inode': { 'mode': st_mode, 'dev': st_dev, 'uname': username, 'gname': groupname, 'atime': st_atime, 'mtime': st_mtime, 'size': st_size } (optional if file removed), 'lname': 'link_name' (optional if symlink), 'prev_name': '' (optional if renamed), 'new_level': True (optional if incremental), 'deleted': True (optional if removed), 'deltas': len_of_blocks, [modified blocks] (if patch) }, ... ]
- Parameters
restore_path – Path where to restore file(s)
read_pipe – ackup data
backup – Backup info
except_queue – Queue for exceptions
- write_engine_meta(manifest_path, files_meta)¶