File editor clears file when saving to full disk

[Biotronic]

Describe the issue you are experiencing

I had accidentally left debug logging on for zigbee while I was on vacation, and since HA complained about disk space I opened file editor to disable it. Pressing the save button I was informed that there was no space to save the file, so I deleted the log files and opened configuration.yaml anew, only you be greeted with an empty editor - everything was gone from the file.

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

Which add-on are you reporting an issue with?

File editor

What is the version of the add-on?

5.6.0

Steps to reproduce the issue

1. Fill disk to the brim
2. Open some file in file editor, make some changes and save it. You should get an error message saying it was unable to save.
3. Close the file and re-open it. Notice that it's empty.

System Health information

System Information

version	core-2023.6.3
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
user	root
virtualenv	false
python_version	3.11.4
os_name	Linux
os_version	6.1.21-v8
arch	aarch64
timezone	Europe/Oslo
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
GitHub API Calls Remaining	5000
Installed Version	1.31.0
Stage	running
Available Repositories	1358
Downloaded Repositories	18

Home Assistant Cloud

logged_in	true
subscription_expiration	December 15, 2023 at 01:00
relayer_connected	true
relayer_region	eu-central-1
remote_enabled	true
remote_connected	true
alexa_enabled	false
google_enabled	false
remote_server	eu-central-1-7.ui.nabu.casa
certificate_status	ready
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 10.3
update_channel	stable
supervisor_version	supervisor-2023.08.1
agent_version	1.5.1
docker_version	23.0.6
disk_total	28.5 GB
disk_used	18.2 GB
healthy	true
supported	true
board	rpi4-64
supervisor_api	ok
version_api	ok
installed_addons	Z-Wave JS (0.1.84), Terminal & SSH (9.7.1), Grafana (8.3.0), Studio Code Server (5.8.0), Grocy (0.19.1), AppDaemon (0.13.1), Node-RED (14.2.2), Mosquitto broker (6.2.1), Z-Wave JS UI (1.13.4), File editor (5.6.0), UCTRONICS OLED Display (Python) (2021.10.25.003)

Dashboards

dashboards	1
resources	10
views	6
mode	storage

Recorder

oldest_recorder_run	August 13, 2023 at 02:35
current_recorder_run	August 13, 2023 at 04:35
estimated_db_size	429.81 MiB
database_engine	sqlite
database_version	3.41.2

Spotify

api_endpoint_reachable	ok

Anything in the Supervisor logs that might be useful for us?

No response

Anything in the add-on logs that might be useful for us?

INFO:2023-09-07 09:51:18,511:hass_configurator.configurator:172.30.32.2 - "GET /api/file?filename=/config/configuration.yaml HTTP/1.1" 200 -
WARNING:2023-09-07 09:51:42,551:hass_configurator.configurator:[Errno 28] No space left on device
INFO:2023-09-07 09:51:42,552:hass_configurator.configurator:172.30.32.2 - "POST /api/save HTTP/1.1" 200 -

Additional information

No response

[MattWestb]

I think from my experience that this is one underlying thing in the (most) Operating system and nothing the application can do and is the same if running out of storage on most Linux and Window versions.
The OS is priority is trying writing its important things so its deleting the file you have changing and before its writing the new its using the new free blocks for the system and cant writing your changes.
If out of storage booting external and deleting files is the only way doing it OK or booting on some kind of safe mode if its possible for fixing the config.

[frenck]

This is not an issue caused by the add-on, but not correctly handled by the configurator application that runs inside this add-on.

Please report this issue upstream with the hass configurator project, once they release and fix this, we can update the add-on to include it.

../Frenck