Issues with multiple docker volumes in a single location

[PleaseStopAsking]

I am attempting to backup multiple docker volumes in a single location but when running autorestic config, I am getting the error Error: location "docker" has more than one docker volume.

I didn't see anyone else reporting this issue with a quick search of issues and discussion so I want to see if anyone has any idea of what's going on here. Is this a limitation of docker volume locations and I need to split this into individual locations?

My other locations and backends are working fine but those are not docker volumes.

Config:

version: 2
locations:
  docker:
    from: 
      - plex
      - influxdb
    type: volume
    to: data-docker
    cron: '0 3 * * 0' # every sunday at 3:00

backends:
  data-docker:
    type: sftp
    path: {{ autorestic_ssh_name }}:/mnt/store/data/docker/{{ ansible_hostname }}
    key: {{ geordi_autorestic_backends_data_key }}

[PleaseStopAsking]

I implemented a loop to create a location and backend per volume but then discovered that SFTP is not supported for docker volumes! I also could find no reference to this limitation in the docs.

What is the path forward for volume backups if sftp is the only option available for backends?

[mwittwer]

I also just ran into this problem - any solutions for an sftp backend?

[PleaseStopAsking]

Not for sftp. I ended up spinning up a restic rest-server instead.