Nextcloud AIO mount remote backup using sshfs

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1
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Sorry to hear you’re facing problems :slightly_frowning_face:

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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:

example

Or for longer, use three backticks above and below the code snippet:

longer
example
here

Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can :heart:

Nextcloud version (eg, 29.0.5): 29.0.7.1 - Nextcloud AIO v9.6.0
Operating system and version (eg, Ubuntu 24.04): Ubuntu 22.04.4 LTS
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 8.3): replace me

The issue you are facing:
Can’t backup

Is this the first time you’ve seen this error? (Y/N):
Yes

Steps to replicate it:

  1. Create folder /mnt/backup on host
  2. Open AIO interface at nc.mydomain.com:8080 and set backup location as /mnt/backup
  3. Create 1st backup
  4. rsync contents of /mnt/backup to remote server
  5. delete contents on /mnt/backup on host
  6. mount remote borg backup folder to /mnt/backup using sshfs:
    sshfs remoteuser@remoteserver.com:/nextcloud-backup /mnt/backup
  7. stop and restart nextcloud-aio-mastercontainer
  8. open AIO interface and try to check integrity of backups

The output of your Nextcloud log in Admin > Logging:

Logs of mastercontainer show this

2024-10-01T23:18:44.402133524Z NOTICE: PHP message: Slim Application Error
2024-10-01T23:18:44.402158804Z Type: Exception
2024-10-01T23:18:44.402162124Z Code: 0
2024-10-01T23:18:44.402188444Z Message: Could not start container nextcloud-aio-borgbackup: Server error: `POST http://127.0.0.1/v1.41/containers/nextcloud-aio-borgbackup/start` resulted in a `500 Internal Server Error` response:
2024-10-01T23:18:44.402191684Z {"message":"error while creating mount source path '/mnt/backup': mkdir /mnt/backup: file exists"}

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

PASTE HERE

The output of your Apache/nginx/system log in /var/log/____:

PASTE HERE

Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.

PASTE HERE
2

Hi, it looks like docker has problems bind-mounting the sshfs mount.

You could try to specify a subdir as backup target in the aio interface and check if that works.

3

Hello Simon, always thankful for your responses. I started tinkering with your suggestion, and what finally worked was installing borg on the host and creating another repo in the same mounted directory.
I had to play with some of the suggestions mentioned in this post to be able to get the AIO interface to allow me to change the backup location to a subdirectory as you suggested: