Backup not finishing: OSError: [Errno 9] Bad file descriptor

[stoffelll]

Description:

Backup failing since 10 days with "OSError: [Errno 9] Bad file descriptor"

Addon version: 0.112.1
Home Assistant Version: 2025.8.3
Supervisor Version: 2025.08.3
Supervisor Channel: stable
Hassos Version: 16.1
Docker Version: 28.3.3

Exception/Supervisor Logs:

[32m2025-08-30 04:00:59.687 INFO (SyncWorker_3) [supervisor.backups.backup] Backing up folder ssl�[0m
�[32m2025-08-30 04:00:59.700 INFO (SyncWorker_3) [supervisor.backups.backup] Backup folder ssl done�[0m
�[32m2025-08-30 04:00:59.701 INFO (SyncWorker_2) [supervisor.backups.backup] Backing up folder media�[0m
�[32m2025-08-30 04:04:02.719 INFO (MainThread) [supervisor.auth] Auth request from 'core_mosquitto' for 'admin'�[0m
�[32m2025-08-30 04:04:03.063 INFO (MainThread) [supervisor.auth] Successful login for 'admin'�[0m
�[33m2025-08-30 04:05:13.305 WARNING (MainThread) [supervisor.addons.options] Option 'default_superuser' does not exist in the schema for Paperless-ngx (ca5234a0_paperless-ngx)�[0m
�[33m2025-08-30 04:10:13.351 WARNING (MainThread) [supervisor.addons.options] Option 'default_superuser' does not exist in the schema for Paperless-ngx (ca5234a0_paperless-ngx)�[0m
�[32m2025-08-30 04:12:02.721 INFO (MainThread) [supervisor.auth] Auth request from 'core_mosquitto' for 'admin'�[0m
�[32m2025-08-30 04:12:03.068 INFO (MainThread) [supervisor.auth] Successful login for 'admin'�[0m
�[32m2025-08-30 04:12:56.643 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token�[0m
�[32m2025-08-30 04:14:55.201 INFO (SyncWorker_2) [supervisor.backups.backup] Backup folder media done�[0m
�[32m2025-08-30 04:14:55.201 INFO (MainThread) [supervisor.backups.manager] Backup 4d14e62b starting stage finishing_file�[0m
�[31m2025-08-30 04:14:56.167 ERROR (MainThread) [supervisor.backups.manager] Backup 4d14e62b error
Traceback (most recent call last):
File "/usr/src/supervisor/supervisor/backups/manager.py", line 532, in _do_backup
async with backup.create():
~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.13/contextlib.py", line 221, in __aexit__
await anext(self.gen)
File "/usr/src/supervisor/supervisor/backups/backup.py", line 495, in create
size_bytes = await self.sys_run_in_executor(_close_outer_tarfile)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
result = self.fn(*self.args, **self.kwargs)
File "/usr/src/supervisor/supervisor/backups/backup.py", line 488, in _close_outer_tarfile
outer_secure_tarfile.close()
~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.13/site-packages/securetar/__init__.py", line 245, in close
self._tar.close()
~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.13/tarfile.py", line 2048, in close
self.fileobj.close()
~~~~~~~~~~~~~~~~~~^^
OSError: [Errno 9] Bad file descriptor�[0m
�[32m2025-08-30 04:14:56.182 INFO (MainThread) [supervisor.api.middleware.security] /supervisor/logs access from cebe7a76_hassio_google_drive_backup�[0m

Infos:

-Google Drive has sufficient free space for several backups
-local available space in Home Assistant is around 70GB and one backup is around 30GB