Not sure about my config #456

m8-t · 2025-09-03T17:26:12Z

m8-t
Sep 3, 2025

Hi!

I try to setup autorestic but to me it seems that I misunderstood the config or something.

Here is what I got:

version: 2
locations:
  home:
    from: /home/dan
    to: remote
    options:
      backup:
        exclude:
          - '/home/dan/.cache'
          - '/home/dan/.local/share'
          - '/home/dan/.local/state'
          - '/home/dan/Downloads'
          - '/home/dan/.minikube'
          - '/home/dan/.var'
          - '/home/dan/.thunderbird'
          - '/home/dan/Games'
          - '/home/dan/go'
          - '/home/dan/Nextcloud'
    forget: prune
    options:
      forget:
        keep-last: 3
backends:
  remote:
    type: s3
    path: "someobjectstorage"
    key: superdupersecretpassword
    env:
      AWS_ACCESS_KEY_ID: foo
      AWS_SECRET_ACCESS_KEY: bar

Afaik autorestic lacks a dry run option. So I thought that I could achieve this by invoking restic over autorestic like this:

autorestic exec -av -- backup /home/dan --exclude-file=exclude.txt --dry-run

Contents of exclude.txt (same like in the config):

cat -p exclude.txt 
/home/dan/.cache
/home/dan/.local/share
/home/dan/.local/state
/home/dan/Downloads
/home/dan/.minikube
/home/dan/.var
/home/dan/.thunderbird
/home/dan/Games
/home/dan/go
/home/dan/Nextcloud

When I run restic invoked like that it gives me this output:

autorestic exec -av -- backup /home/dan --exclude-file=exclude.txt --dry-run
Using config paths: . /home/dan /home/dan/.config/autorestic
Using config: 	/home/dan/.autorestic.yml
Using lock:	/home/dan/.autorestic.lock.yml


    Executing on "remote"    

> Executing: /usr/bin/restic backup /home/dan --exclude-file=exclude.txt --dry-run
using parent snapshot ef4070da

Files:        2407 new,   264 changed, 170060 unmodified
Dirs:          767 new,   731 changed, 41324 unmodified
Would add to the repository: 351.553 MiB (198.948 MiB stored)

processed 172731 files, 29.149 GiB in 0:05

This says it would add about 351 MiB to the repository, this sounds reasonable because my last snapshot was yesterday.

When I execute autorestic with the -a option it starts the backup but I can see in the s3 storage backend that it already uploaded way more then the 350 MiB.

It also refers the same snapshot as the dry run from above:

autorestic backup -av                                                       
Using config paths: . /home/dan /home/dan/.config/autorestic
Using config: 	/home/dan/.autorestic.yml
Using lock:	/home/dan/.autorestic.lock.yml


    Backing up location "home"    

Backend: remote
> Executing: /usr/bin/restic backup --tag ar:location:home /home/dan
using parent snapshot ef4070da

I am not sure whats off here, somebody got a hint?

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m8-t
Sep 3, 2025