Frank
7ee831adee
Three things the 2026-10-31 five-library relayout taught, written where the next operator reads them: - A verify run must open the servers' databases plain `mode=ro`. Both keep their libraries in WAL mode; `immutable=1` skips the write-ahead log, so a scanner's own committed rows read as missing and the read can fail as "database disk image is malformed". The census page claimed immutable — now it says what the code does. - "No row at the destination" splits into four classes, and only REAL (no row at dst AND the file still at src) is the relayout's own damage. Phantom rows naming a pre-move path are normal behaviour for both servers. And the owning server decides whether a pass can convict: Jellyfin holds no audiobook library, so that journal verifies against Plex or it proves nothing. - A chain of passes rolls back newest journal first, or the tool refuses; the refusals measured that day are the tool working, not failing. The music and audiobook arms moved to their own pages (progressive disclosure; the parent drops 175 lines and stays the owner of the shared gates, the executor, the journal law and the rollback). Stale per-run counts destroyed: episode counts, byte sizes, move tallies for a pass that already happened.
75 lines
3.8 KiB
Markdown
75 lines
3.8 KiB
Markdown
---
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type: reference
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title: Media Audiobook Relayout
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description: "Re-filing /mnt/entropy/Audiobooks by Plex's chapter rows: narrator shelves, no renumbering, the refusals."
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tags: [dankserver, media-server, plex, media-relayout]
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timestamp: 2026-10-31T00:00:00Z
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---
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# Media Audiobook Relayout
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`/mnt/entropy/Audiobooks` is the one library here that [[Jellyfin]] does not read
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at all — its music scanner has no audiobook concept — while [[Plex]] indexes all
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of it as Artist → Album → Track: the album is the BOOK, that book's single artist
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is the NARRATOR, both matched out of the files' own tags. Today one book is split
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across `… [Part 1]`, `… [Part 2]` folders three or four deep inside a collection
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pack, so a scan serves three quarters of a novel; `scripts/media-audiobooks.py`
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re-files the tree so the property both servers' book scanners assume is true —
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Audiobooks/<Narrator>/<Book> (<year>)/<the file keeps its own name>
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The shared gates, the executor, the journal law and the rollback live in
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[[Media Relayout]]; this page is the audiobook arm only.
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```bash
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# 1. The authority: Plex's chapter rows for this root (the DB opens read-only).
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python3 scripts/media-census.py audiobooks --root /mnt/entropy/Audiobooks \
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--out /tmp/ab_rows.tsv
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# 2. What is on disk (stat only).
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python3 scripts/media-census.py enumerate --root /mnt/entropy/Audiobooks \
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--out /tmp/ab_enum.tsv
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# 3. The plan.
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python3 scripts/media-audiobooks.py --root /mnt/entropy/Audiobooks \
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--enum /tmp/ab_enum.tsv --rows /tmp/ab_rows.tsv --out /tmp/ab_plan.tsv \
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--exceptions /tmp/ab_exceptions.txt
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# 4. Read the exceptions file FIRST. Then the same executor, journal and rollback
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# as [[Media Relayout]] shows, on its own journal, and refresh the Plex section
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# as in step 5 of the movie Procedure — from inside the container, never over
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# the host port.
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scripts/media-apply.py apply --plan /tmp/ab_plan.tsv --root /mnt/entropy \
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--journal /mnt/entropy/media-relayout-audiobooks.jsonl --apply
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```
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The group is the identity Plex asserts in its own database — **(narrator, book,
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year)** — so one book arriving in four part folders becomes one folder, and a
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1965 and a 2020 recording that share a title stay two books.
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Two laws are forced by what the rows actually hold:
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+- **A chapter is never renumbered.** Most books contain chapters whose index Plex
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does not know, so a number written into a name would be invented — and it would
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buy nothing, because both servers order playback by the embedded track tag, not
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by the file name. A wrong number in a name is the number a human later trusts.
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Fix order in the tags: a Plex scan re-reads tags and never renames a file.
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+- **The shelf is the narrator, not the author.** Every book has exactly one artist
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row and it is the narrator; the author survives only inside some album titles
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(`Kryptos by Graham McNeill`) and in no column Plex stores, so deriving it would
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mean parsing titles where a ripper wrote one and inventing it everywhere else.
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The author stays visible in the folder name Plex itself shows.
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What it refuses, the music arm's list with one addition: a video container, audio
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no chapter row names, and a loose file in a folder holding two books all park under
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`_unsorted` with the path they have today — and so does a chapter whose row names
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**no book or no narrator**: a placeholder (`[Unknown Album]`, `[Unknown Artist]`)
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that unrelated books share, or a chapter number mistagged as the artist (`0.4`).
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`Various Artists` is not a placeholder — that is a multi-cast read.
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The reviewed plan lives at `/mnt/entropy/media-relayout-audiobooks-plan.tsv`; it
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applies on its own journal, behind the music writer, and then refreshes the Plex
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section. Verify it with `--db-kind plex` — Jellyfin holds no rows here, so a
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Jellyfin pass proves nothing either way.
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## See Also
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[[Media Relayout]], [[Media Music Relayout]], [[Plex]]
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