diff --git a/homeassistant/components/backup/manager.py b/homeassistant/components/backup/manager.py index 69df310bd55..f48a71a78c3 100644 --- a/homeassistant/components/backup/manager.py +++ b/homeassistant/components/backup/manager.py @@ -23,6 +23,8 @@ from homeassistant.util.json import json_loads_object from .const import DOMAIN, EXCLUDE_FROM_BACKUP, LOGGER +BUF_SIZE = 2**20 * 4 # 4MB + @dataclass class Backup: @@ -99,7 +101,7 @@ class BackupManager: backups: dict[str, Backup] = {} for backup_path in self.backup_dir.glob("*.tar"): try: - with tarfile.open(backup_path, "r:") as backup_file: + with tarfile.open(backup_path, "r:", bufsize=BUF_SIZE) as backup_file: if data_file := backup_file.extractfile("./backup.json"): data = json_loads_object(data_file.read()) backup = Backup( @@ -227,7 +229,7 @@ class BackupManager: self.backup_dir.mkdir() with TemporaryDirectory() as tmp_dir, SecureTarFile( - tar_file_path, "w", gzip=False + tar_file_path, "w", gzip=False, bufsize=BUF_SIZE ) as tar_file: tmp_dir_path = Path(tmp_dir) save_json( @@ -237,6 +239,7 @@ class BackupManager: with SecureTarFile( tmp_dir_path.joinpath("./homeassistant.tar.gz").as_posix(), "w", + bufsize=BUF_SIZE, ) as core_tar: atomic_contents_add( tar_file=core_tar,