Imported album changes gid to root

[juerb]

When I import an album into my library with beets the written directory and files change group ownership from 1027:100 (source) to 1027:0 (destination). IMO the file/dir owner should not be altered.

I suspected the permissions plugin but it seems to also happen when ran without plugins.

Problem

Running this command in verbose (-vv) mode:

 % id
uid=1027(jb) gid=100(users) groups=100(users),4(adm),10(wheel),190(systemd-journal) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[beets_import.log](https://github.com/user-attachments/files/19373578/beets_import.log)

% stat ~inc/music/Tate.McRae-So.Close.To.What.2025.\[16Bit\]
  File: /data/truenas/scratch/inc/music/Tate.McRae-So.Close.To.What.2025.[16Bit]
  Size: 3               Blocks: 49         IO Block: 131072 directory
Device: 0,103   Inode: 407805      Links: 2
Access: (0750/drwxr-x---)  Uid: ( 1027/      jb)   Gid: (  100/   users)
[...]
% beet -vv import ~inc/music
[...]
% stat ~mp3/Tate\ McRae\ -\ So\ Close\ to\ What\ \(2025\)
  File: /data/truenas/music/Tate McRae - So Close to What (2025)
  Size: 18              Blocks: 78         IO Block: 131072 directory
Device: 0,104   Inode: 102532      Links: 2
Access: (0750/drwxr-x---)  Uid: ( 1027/      jb)   Gid: (    0/    root)

Setup

• OS: Fedora 41
• Python version: 3.13.2
• beets version: 1.6.1
• Turning off plugins made problem go away (yes/no): no

My configuration (output of beet config) is:

# --------------- Plugins ---------------

plugins:
- fetchart
- duplicates
- convert
- scrub
- zero
- replaygain
- lastgenre
- chroma
- inline
- missing
- permissions
- bareasc
- importadded
- hook
directory: /data/truenas/music
art_filename: cover

# --------------- Performance ---------------

threaded: yes
original_date: no

# --------------- Tagging ---------------

per_disc_numbering: no
importadded:
    preserve_mtimes: no
    preserve_write_mtimes: no
scrub:
    auto: yes
zero:
    auto: yes
    fields: month day comments
    keep_fields: []
    update_database: no
permissions:
    file: '0644'
    dir: '0750'
chroma:
    auto: yes
duplicates:
    album: yes
    checksum: ''
    copy: ''
    count: no
    delete: no
    format: ''
    full: no
    keys: []
    merge: no
    move: ''
    path: no
    tiebreak: {}
    strict: no
    tag: ''
missing:
    count: yes
    total: no
    album: no
convert:
    auto: no
    ffmpeg: /usr/bin/ffmpeg
    opts: -ab 320k -ac 2 -ar 48000
    max_bitrate: 320
    threads: 1
    dest:
    pretend: no
    link: no
    hardlink: no
    format: mp3
    id3v23: inherit
    formats:
        aac:
            command: ffmpeg -i $source -y -vn -acodec aac -aq 1 $dest
            extension: m4a
        alac:
            command: ffmpeg -i $source -y -vn -acodec alac $dest
            extension: m4a
        flac: ffmpeg -i $source -y -vn -acodec flac $dest
        mp3: ffmpeg -i $source -y -vn -aq 2 $dest
        opus: ffmpeg -i $source -y -vn -acodec libopus -ab 96k $dest
        ogg: ffmpeg -i $source -y -vn -acodec libvorbis -aq 3 $dest
        wma: ffmpeg -i $source -y -vn -acodec wmav2 -vn $dest
    auto_keep: no
    tmpdir:
    quiet: no
    embed: yes
    paths: {}
    no_convert: ''
    never_convert_lossy_files: no
    copy_album_art: no
    album_art_maxwidth: 0
    delete_originals: no
    playlist:
paths:
    default: $albumartist - $album%aunique{} ($year)/$track. $artist - $title
    singleton: Non-Album/$artist - $title
    comp: $album%aunique{} ($year)/$track. $artist - $title

import:
    write: yes
    copy: no
    move: yes
    resume: ask
    duplicate_verbose_prompt: yes
    incremental: no
    from_scratch: yes
    quiet_fallback: skip
    timid: no
    languages: en jp es
    log: ~/.config/beets/beet.log

match:
    preferred:
        media: [Digital Media|File, CD]
        original_year: yes
lastgenre:
    auto: yes
    whitelist: yes
    min_weight: 10
    count: 1
    fallback:
    canonical: no
    source: album
    force: yes
    separator: ', '
    prefer_specific: no
    title_case: yes
embedart:
    auto: no
fetchart:
    auto: yes
    enforce_ratio: 2%
    maxwidth: 750
    quality: 0
    minwidth: 0
    max_filesize: 0
    cautious: no
    cover_names:
    - cover
    - front
    - art
    - album
    - folder
    sources:
    - filesystem
    - coverart
    - itunes
    - amazon
    - albumart
    - cover_art_url
    store_source: no
    high_resolution: no
    deinterlace: no
    cover_format:
    google_key: REDACTED
    google_engine: 001442825323518660753:hrh5ch1gjzm
    fanarttv_key: REDACTED
    lastfm_key: REDACTED
replaygain:
    auto: yes
    backend: gstreamer
    overwrite: yes
    threads: 4
    parallel_on_import: no
    per_disc: no
    peak: 'true'
    targetlevel: 89
    r128: [Opus]
    r128_targetlevel: 84
bareasc:
    prefix: '#'

[DjSlash]

What are the permissions of ~mp3 ?

[juerb]

What are the permissions of ~mp3 ?

root:root

jb@fedora-vm ~ % stat ~mp3/.
  File: /data/truenas/music/.
  Size: 5148            Blocks: 3171       IO Block: 131072 directory
Device: 0,104   Inode: 4           Links: 5147
Access: (0777/drwxrwxrwx)  Uid: (    0/    root)   Gid: (    0/    root)
Context: system_u:object_r:nfs_t:s0
Access: 2016-04-21 19:27:24.002169375 +0200
Modify: 2025-03-22 13:13:14.648101022 +0100
Change: 2025-03-22 13:13:14.648101022 +0100
 Birth: -

[DjSlash]

Looks like it's a nfs mount. Permissions and ownership may get jumbled around depending on settings of the nfs server. Since permissions are set to have anyone write in that directory, it's normal that it gets the ownership of the user who creates new files there. Normally they would also get the group ownership, but since this is nfs, it probably gets overridden by the server.