Error during pre-backup: Could not lock database within 30 seconds.

[Revilo91]

The problem

Get the following error message:

Logger: homeassistant.components.backup
Quelle: components/backup/[manager.py:1078](https://manager.py:1078/)
Integration: Backup (Dokumentation, Probleme)
Erstmals aufgetreten: 20. Februar 2025 um 21:19:25 (2 Vorkommnisse)
Zuletzt protokolliert: 06:51:40

Error creating backup: Backup failed: [{'type': 'HomeAssistantBackupError', 'message': "Preparing backup of Home Assistant Core failed. Failed to inform HA Core: Unsuccessful websocket message - {'id': 429, 'type': 'result', 'success': False, 'error': {'code': 'pre_backup_actions_failed', 'message': 'Error during pre-backup: Could not lock database within 30 seconds.'}}."}]
Error creating backup: Backup failed: [{'type': 'HomeAssistantBackupError', 'message': "Preparing backup of Home Assistant Core failed. Failed to inform HA Core: Unsuccessful websocket message - {'id': 658, 'type': 'result', 'success': False, 'error': {'code': 'pre_backup_actions_failed', 'message': 'Error during pre-backup: Could not lock database within 30 seconds.'}}."}]

It could be because the home-assistant_v2.db is >100 GB in size. Is there another way to make it smaller? With Recorder.purge it stays that big...

What version of Home Assistant Core has the issue?

core-20252.4

What was the last working version of Home Assistant Core?

core-2024.x.x

What type of installation are you running?

Home Assistant OS

Integration causing the issue

homeassistant.components.backup

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Additional information

No response