Use external hdd for backup data in ncp docker container

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1

Nextcloud version (eg, 20.0.5): 20.0.8 (nextcloud:stable-fpm container)
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04
Apache or nginx version (eg, Apache 2.4.25): nginx-1.19.8
PHP version (eg, 7.4): `n/a``

The issue you are facing:

I try to start a container and give it access to an external hdd. Background: I have a backup of my data on a drive and want to restore it to a new ncp installation in docker. I also want to make backups in that hdd later.

I started the container with:

docker run -d -p 4443:4443 -p 443:443 -p 80:80 -v ncdata:/data --name nextcloudpi ownyourbits/nextcloudpi --mount source=/media/ansi/Backup_4TB,destination=/mnt 192.168.103.44

The host shows the content of the directory, but the container does not:

ansi@ansi-itx:~$ ls /media/ansi/Backup_4TB
iobroker  ncp-backups  ncp-config_20190607.tar  ncp-config_20190614.tar
ansi@ansi-itx:~$ docker exec -it nextcloudpi bash
root@6921e5850765:/# ls /mnt
root@6921e5850765:/#

How do I have to do it correctly?

docker inspect nextcloudpi
[
    {
        "Id": "6921e5850765e95e071b26f7c247e67adaf04f65c778e4ef38e3943d8c37340a",
        "Created": "2021-03-21T09:06:10.906777692Z",
        "Path": "/run-parts.sh",
        "Args": [
            "--mount",
            "source=/media/ansi/Backup_4TB,destination=/mnt",
            "192.168.103.44"
        ],

I cannot post any outputs here as nc is not yet initialized.

2

Can someone please give me a hint here or at least give me feedback on my question, what info is missing?

3

Try

docker exec -it nextcloudpi ncp-report

and post output via pastbin or similar

Also I’d try mounting the external using the -v option, as you are with ncdata.
Something like:

docker run -d -p 4443:4443 -p 443:443 -p 80:80 -v ncdata:/data -v /media/ansi/Backup_4TB:/ncp-backups --name nextcloudpi ownyourbits/nextcloudpi 192.168.103.44