[supervisor.backups.manager] Error closing tarfile

[nicknol]

The problem

When trying to create a backup it runs into an error: [supervisor.backups.manager] Error closing tarfile

I noticed that the backup is created successfully when I exclude the MariaDB addon. And vice versa, trying to backup only the MariaDB fails. The behavior is observed regardless whether I stop the MariaDB or let in run.
The unpacked size of the MariaDB is about 14GB,

The backup worked until FEB-20, but I am not sure what has changed on that date.

What version of Home Assistant Core has the issue?

core-2024.2.5

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Backup

Link to integration documentation on our website

https://www.home-assistant.io/integrations/backup/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Supervisor log

24-02-28 23:14:08 ERROR (MainThread) [supervisor.backups.manager] Backup 26c6f681 error
Traceback (most recent call last):
  File "/usr/src/supervisor/supervisor/backups/manager.py", line 261, in _do_backup
    async with backup:
  File "/usr/src/supervisor/supervisor/backups/backup.py", line 363, in __aexit__
    self._outer_secure_tarfile.__exit__(
  File "/usr/local/lib/python3.12/site-packages/securetar/__init__.py", line 140, in __exit__
    self._tar.close()
  File "/usr/local/lib/python3.12/tarfile.py", line 1975, in close
    self.fileobj.close()
OSError: [Errno 5] I/O error

Additional information

I use a NAS as my storage device, there is suffiicient diskspace available.
A tar file is created on the NAS, but trying to open it results in 'corrupted tar file' (or similar). Backups created before FEB-20 are not corrupted.

[home-assistant]

Hey there @home-assistant/core, mind taking a look at this issue as it has been labeled with an integration (backup) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of backup can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Renames the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign backup Removes the current integration label and assignees on the issue, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the issue.

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backup documentation
backup source
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[nicknol]

I've upgraded homeassistant and supervisor to the latest versions. Unfortunately the issue remains.
Version core-2024.3.1
Home Assistant OS 12.1
supervisor-2024.03.0
Storage total 468.7 GB
Storage used 115.9 GB

Please find the extract from the supervisor log.

�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.backups.manager] Backup c73bb3da starting stage addon_repositories�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.backups.manager] Backup c73bb3da starting stage docker_config�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.backups.manager] Creating new full backup with slug c73bb3da�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.backups.manager] Backup c73bb3da starting stage addons�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_ssh�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_ssh�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_samba�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_samba�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on a0d7b954_vscode�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon a0d7b954_vscode�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on a0d7b954_ssh�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon a0d7b954_ssh�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_mosquitto�[0m
�[32m24-03-16 09:31:20 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_mosquitto�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on b9f12d83_psacc�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon b9f12d83_psacc�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_piper�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_piper�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_whisper�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_whisper�[0m
�[32m24-03-16 09:31:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_mariadb�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_mariadb�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on a0d7b954_phpmyadmin�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon a0d7b954_phpmyadmin�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_silabs_flasher�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_silabs_flasher�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on 229cc4d7_nextcloud_backup�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon 229cc4d7_nextcloud_backup�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on 49686a9f_evcc�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon 49686a9f_evcc�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on core_openwakeword�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon core_openwakeword�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Building backup for add-on 5c53de3b_esphome�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.addons.addon] Finish backup for addon 5c53de3b_esphome�[0m
�[32m24-03-16 09:32:21 INFO (MainThread) [supervisor.backups.manager] Backup c73bb3da starting stage home_assistant�[0m
�[32m24-03-16 09:32:24 INFO (MainThread) [supervisor.homeassistant.module] Backing up Home Assistant Core config folder�[0m
�[32m24-03-16 09:32:53 INFO (MainThread) [supervisor.homeassistant.module] Backup Home Assistant Core config folder done�[0m
�[32m24-03-16 09:32:53 INFO (MainThread) [supervisor.backups.manager] Backup c73bb3da starting stage folders�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_4) [supervisor.backups.backup] Backing up folder share�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_4) [supervisor.backups.backup] Backup folder share done�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_6) [supervisor.backups.backup] Backing up folder addons/local�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_6) [supervisor.backups.backup] Backup folder addons/local done�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_1) [supervisor.backups.backup] Backing up folder ssl�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_1) [supervisor.backups.backup] Backup folder ssl done�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_0) [supervisor.backups.backup] Backing up folder media�[0m
�[32m24-03-16 09:32:53 INFO (SyncWorker_0) [supervisor.backups.backup] Backup folder media done�[0m
�[32m24-03-16 09:32:53 INFO (MainThread) [supervisor.backups.manager] Backup c73bb3da starting stage finishing_file�[0m
�[31m24-03-16 09:33:53 ERROR (MainThread) [supervisor.backups.manager] Backup c73bb3da error
Traceback (most recent call last):
  File "/usr/src/supervisor/supervisor/backups/manager.py", line 261, in _do_backup
    async with backup:
  File "/usr/src/supervisor/supervisor/backups/backup.py", line 363, in __aexit__
    self._outer_secure_tarfile.__exit__(
  File "/usr/local/lib/python3.12/site-packages/securetar/__init__.py", line 140, in __exit__
    self._tar.close()
  File "/usr/local/lib/python3.12/tarfile.py", line 1975, in close
    self.fileobj.close()
OSError: [Errno 5] I/O error�[0m