u/Ruhrpottpatriot

I'm currently setting up my media stack using the TRaSH Guides, but I run into an hardlinking issue. Sonarr copies the files instead of hardlinking them.

I have enabled "Use Hardlinks instead of Copy" in Sonarr and tested (inside the sonarr container) that ln works. qBittorrent downloads files to "/data/torrent" and Sonarr has its root folder set to "/data/media/tv".

For testing I'm building the system on my local Win10 machine using docker-compose and I plan to migrate to the real server (once RAM arrives...)

My docker-compose file

    docker-compose.yaml
    ====
    services:
      sonarr:
        container_name: sonarr
        image: ghcr.io/hotio/sonarr
        env_file:
          - services.env
        ports:
          - 8989:8989
        volumes:
          - ./config/sonarr:/config
          - ./data:/data
        networks:
          - media-net
    
      qbittorrent:
        container_name: qbittorrent
        image: ghcr.io/hotio/qbittorrent
        ports:
          - 8080:8080
        env_file:
          - services.env
        environment:
          - WEBUI_PORTS=8080/tcp,8080/udp
          - TORRENTING_PORT=20235
          - LIBTORRENT=v1
          # Enable VPN!!!
          - VPN_ENABLED=true
          - # VPN options here
        volumes:
          - ./config/qBittorrent:/config
          - ./data:/data
        sysctls:
          - net.ipv4.conf.all.src_valid_mark=1
          - net.ipv6.conf.all.disable_ipv6=1
        cap_add:
          - NET_ADMIN
        networks:
          - media-net


    services.env
    ===
    TZ=Europe/Berlin
    PUID=1000
    PGID=1000
    # UMASK=002

I found the following line in my sonarr.debug.log

2026-05-19 21:03:15.3|Debug|DiskTransferService|HardLinkOrCopy \[/data/torrent/sonarr/\[NVN\] Witch Hat Atelier - S01E01 v2 \[WEBRip HEVC 1080p\] \[68E8679A\].mkv\] > \[/data/media/tv/Witch Hat Atelier/Season 1/\[NVN\] Witch Hat Atelier - S01E01 v2 \[WEBRip HEVC 1080p\] \[Sub. Español\].mkv\] 2026-05-19 21:03:15.3|Debug|DiskProvider|Hardlink '/data/torrent/sonarr/\[NVN\] Witch Hat Atelier - S01E01 v2 \[WEBRip HEVC 1080p\] \[68E8679A\].mkv' to '/data/media/tv/Witch Hat Atelier/Season 1/\[NVN\] Witch Hat Atelier - S01E01 v2 \[WEBRip HEVC 1080p\] \[Sub. Español\].mkv' failed.

\[v4.0.17.2952\] System.InvalidOperationException: Operation not permitted ---> Mono.Unix.UnixIOException: Operation not permitted \[EPERM\]. --- End of inner exception stack trace --- at Mono.Unix.UnixMarshal.ThrowExceptionForLastError() at Mono.Unix.UnixMarshal.ThrowExceptionForLastErrorIf(Int32 retval) at Mono.Unix.UnixFileSystemInfo.CreateLink(String path) at NzbDrone.Mono.Disk.DiskProvider.TryCreateHardLink(String source, String destination) in ./Sonarr.Mono/Disk/DiskProvider.cs:line 444

The log seems to indicate that there's a permission error, but I'm not sure where I should change them. If the entire log is needed, I can provide it.

Thanks in advance.