Backup to network location (SMB/CIFS share) now working

Palmin · October 12, 2023, 6:02pm

Hi there,

I tried to set up a backup to my FritzBox FritzNAS through SMB/CIFS.

I have entered the connection information in Settings->System->Storage, and I don’t get an error, so I have to assume that the connection is working.

This is the Supervisor log, which also seems to be OK:

23-10-12 19:46:52 INFO (MainThread) [supervisor.mounts.manager] Creating or updating mount: fritznas
23-10-12 19:46:52 INFO (MainThread) [supervisor.mounts.mount] Mount fritznas still activating, waiting up to 30 seconds to complete
23-10-12 19:47:02 INFO (MainThread) [supervisor.backups.manager] Found 28 backup files

When I trigger a backup to the network location, I get an error:

23-10-12 19:25:49 INFO (MainThread) [supervisor.backups.manager] Creating new full backup with slug ff8f5637
23-10-12 19:25:49 ERROR (MainThread) [supervisor.backups.manager] Backup ff8f5637 error
Traceback (most recent call last):
  File "/usr/src/supervisor/supervisor/backups/manager.py", line 239, in _do_backup
    async with backup:
  File "/usr/src/supervisor/supervisor/backups/backup.py", line 300, in __aenter__
    self._tmp = TemporaryDirectory(dir=str(self.tarfile.parent))
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/tempfile.py", line 854, in __init__
    self.name = mkdtemp(suffix, prefix, dir)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/tempfile.py", line 368, in mkdtemp
    _os.mkdir(file, 0o700)
PermissionError: [Errno 13] Permission denied: '/data/mounts/fritznas/tmpf6uaxjsj'

I am not really sure if HA has mounted the correct directory, because of the log Found 28 backup files when connecting. I don’t see any directory with 28 files in my network share, but my local HA backup directory contains 28 backups. So I guess at least the logging when creating a network storage location seems a bit misleading.

Does anyone have any hints what I can do to debug the network storage connection?

This is on a Home Assistant 2023.10.2
Supervisor 2023.10.0
Operating System 10.5

Thanks a lot in advance,
Bernd

Palmin · October 13, 2023, 10:49am

OK, so at least I understand that the message Found 28 backup files is unrelated to the SMB mount, because it also appears after deleting the network storage.

Palmin · October 13, 2023, 11:06am

Got it to work now:
The issue was that I only entered the name of my share “fritzbox” under “Remote share”, but I needed to add the subdirectory, e.g. “fritzbox/FritzNAS”.
In other SMB client implementations, these are often defined separately, so I guess I was confused.

francescopeloi · January 8, 2024, 2:56pm

Hi @Palmin ,

may I ask what parameters are you putting in the various fields when you set up the remote drive in HA to make it work?

I have a Fritzbox too with Fritz Nas enabled on a USB connected external drive, and struggling to get it to work, I think I am writing the wrong parameters as I always get errors:

CIFS: VFS: Error connecting to socket. Aborting operation.
CIFS: VFS: cifs_mount failed w/return code = -111

What I am putting:

Usage: share
Server: fritz.box (and tried also the internal IP too)
Protocol: samba
Samba version: 2.1+ (altough I tried all of them)
Remote share: tried many combinations with the directory I am sharing and “fritz.nas”
username and password of a fritzbox user with nas access.

francescopeloi · January 9, 2024, 6:21pm

I didn’t enable the samba share in the fritzbox settings you need to scroll down to see that option, and I never scrolled down. Now everything works fine.

rebelregularly · February 13, 2024, 7:45am

Short question. I also missed the SMB option once. But then it was working. But when I checked the backups this morning, nothing showed.

I do use Google Drive HACS integration to also save the backup in the cloud (better save then sorry). Anyone might experience the same? Could it be possible that the energy save option needs to be set to “never” ?

TheBisk · April 26, 2024, 5:59pm

Hi,
I accidentally deleted my settings for network share.
Can you share your settings? Maybe a screeshot of your configuration?

Thanks.

Palmin · April 29, 2024, 7:57am

This is how the settings look like in my case:

francescopeloi · June 10, 2024, 3:29pm

above are like mine.

HVR88 · June 5, 2025, 2:53pm

And by “other,” it means 100% of all other network share implementations anywhere/everywhere. I’ve never EVER seen an implmenetation like HA is presenting.

The backup system has had a lot of changes in the past year, but this far I still really think the UI is absolutely horrible. Easily the worst part of HA overall.

dosdroid · September 30, 2025, 11:10am

Just to let others know my remote share was:

Fritz.NAS/HAbackup

Device: FRITZ!Box 6690 Cable by Vodafone CZ FRITZ!OS: 8.03

TheUnknowny · February 4, 2026, 9:33pm

Goodevening everybody,
I’ve been trying to get the Fritz.box NAS to work all evening but I just keep getting an error saying it failed to mount. This seems related to this topic.

In the logs I get the following errors:

2026-02-04 21:23:00.382 homeassistant systemd[1]: Mounting Supervisor cifs mount: FritzboxBackup...
2026-02-04 21:23:00.406 homeassistant kernel: CIFS: Attempting to mount //192.168.178.1/fritz.nas/Elements/HA_Backup
2026-02-04 21:23:00.412 homeassistant mount[4092]: mount error(2): No such file or directory
2026-02-04 21:23:00.412 homeassistant mount[4092]: Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)
2026-02-04 21:23:00.413 homeassistant kernel: CIFS: VFS: cifs_mount failed w/return code = -2
2026-02-04 21:23:00.414 homeassistant systemd[1]: mnt-data-supervisor-mounts-FritzboxBackup.mount: Mount process exited, code=exited, status=32/n/a
2026-02-04 21:23:00.414 homeassistant systemd[1]: mnt-data-supervisor-mounts-FritzboxBackup.mount: Failed with result 'exit-code'.
2026-02-04 21:23:00.415 homeassistant systemd[1]: Failed to mount Supervisor cifs mount: FritzboxBackup.

It seems, it can’t find the folders.
The user has full acces to the NAS but no acces to the rest of the fritzbox settings.
This is the filepath when looking at the NAS in the browser.

The only thing I can think of is that the fritzbox tools integration might be interfering since its using a separate user login. But this seems inlogical.

Does anybody have a clue on where to look further to get this thing to work?

TheUnknowny · February 5, 2026, 4:22pm

I found the error.
I was using the wrong remote share name.

For anyone else looking for an easy way to find the remote share on Linux.

Open up your fileexplorer program, navigate to the network disk.
Then you can use the filepath at the top or the properties menu of the folder you want to acces to find the remote share.

Remove the fritz.box part of the filepath since thats being taken care of by the IP adress and everything should work.