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Storage classes
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What lives where (verified 2026-05-21)
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UNAS NFS — /mnt/pve/unas/services/...
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Local zfs — /opt/stacks/...
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Garage S3 buckets (on local zfs, CT 104)
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Docker named volumes
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Nextcloud (CT 105) — data on NFS
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Backup reality
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Drift cleanup TODO
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<h1 id="storage-layout">Storage layout<a class="headerlink" href="#storage-layout" title="Permanent link">&para;</a></h1>
<blockquote>
<p>Verified state as of 2026-05-21. Source of truth for which service lives on which storage class.
Earlier revisions of this doc were stale on multiple items (Garage, n8n, Arcane, Karakeep, Pocket-ID, arr-stack, Nextcloud's storage protocol, missing Coder/Gitea). Reconciled via live audit.</p>
</blockquote>
<h2 id="storage-classes">Storage classes<a class="headerlink" href="#storage-classes" title="Permanent link">&para;</a></h2>
<table>
<thead>
<tr>
<th>Class</th>
<th>Substrate</th>
<th>Where</th>
<th>Typical use</th>
</tr>
</thead>
<tbody>
<tr>
<td>Local zfs (rootfs)</td>
<td>NVMe in nuc</td>
<td><code>/opt/stacks/&lt;stack&gt;/</code> on each LXC</td>
<td>Tier-1 hot state: databases, SQLite, secret stores, anything latency-sensitive</td>
</tr>
<tr>
<td>Local zfs (subvol)</td>
<td>NVMe in nuc</td>
<td><code>rpool/data/subvol-&lt;NNN&gt;-disk-0</code> per LXC</td>
<td>Container rootfs, image cache</td>
</tr>
<tr>
<td>Docker named volume</td>
<td>NVMe in nuc</td>
<td><code>/var/lib/docker/volumes/...</code> on each Docker CT</td>
<td>Per-container persistent state managed by Docker</td>
</tr>
<tr>
<td>UNAS over <strong>NFSv3</strong></td>
<td><code>192.168.1.31</code></td>
<td><code>/mnt/pve/unas</code> on CTs 101, 103, 104, 105, 111</td>
<td>Bulk media, workspace home dirs, document storage</td>
</tr>
</tbody>
</table>
<h2 id="what-lives-where-verified-2026-05-21">What lives where (verified 2026-05-21)<a class="headerlink" href="#what-lives-where-verified-2026-05-21" title="Permanent link">&para;</a></h2>
<h3 id="unas-nfs-mntpveunasservices">UNAS NFS — <code>/mnt/pve/unas/services/...</code><a class="headerlink" href="#unas-nfs-mntpveunasservices" title="Permanent link">&para;</a></h3>
<p>Bulk + media + non-latency-sensitive app data.</p>
<table>
<thead>
<tr>
<th>Service</th>
<th>CT</th>
<th>Path on UNAS → in container</th>
<th>Backed up?</th>
<th>Notes</th>
</tr>
</thead>
<tbody>
<tr>
<td>Immich (uploads, thumbs, derived)</td>
<td>104</td>
<td><code>services/immich/{encoded-video,profile,thumbs}</code> + <code>media/images</code> + <code>backup/immich</code></td>
<td>Immich own pg_dump → <code>media/images/db-dumps</code>; no off-host copy</td>
<td></td>
</tr>
<tr>
<td>Paperless-ngx (documents)</td>
<td>104</td>
<td><code>media/documents/public/paperless-ngx/{consume,export,library}</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>Paperless-AI</td>
<td>104</td>
<td><code>services/paperless-ai</code><code>/app/data</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>Traccar (logs, config)</td>
<td>104</td>
<td><code>services/traccar/{logs,traccar.xml}</code></td>
<td>none</td>
<td>data dir reverted to local <code>/opt/stacks/traccar/data</code></td>
</tr>
<tr>
<td>Memos</td>
<td>104</td>
<td><code>services/memos</code><code>/var/opt/memos</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>Arr-stack (Audiobookshelf, Prowlarr, RDTClient, Shelfarr) + media</td>
<td>104</td>
<td><code>services/arr-stack/*</code> + <code>media/{audiobooks,ebooks,podcasts,Torrents}</code></td>
<td>none</td>
<td>already migrated (older doc claimed "still local")</td>
</tr>
<tr>
<td>Gluetun (VPN)</td>
<td>104</td>
<td><code>services/gluetun/data</code><code>/gluetun</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>Gitea</td>
<td>111</td>
<td><code>services/gitea</code><code>/data</code></td>
<td>none</td>
<td>new 2026-05-20</td>
</tr>
<tr>
<td>Coder workspace home dirs</td>
<td>111</td>
<td><code>services/coder/&lt;user&gt;/&lt;workspace&gt;</code><code>/home/&lt;user&gt;</code></td>
<td>none</td>
<td>new 2026-05-20</td>
</tr>
<tr>
<td>Backrest's jottacloud-mirrored data</td>
<td>103</td>
<td><code>media/data-dir</code> only</td>
<td><strong>rclone → jottacloud (Backrest)</strong></td>
<td>only path with off-host backup</td>
</tr>
</tbody>
</table>
<h3 id="local-zfs-optstacks">Local zfs — <code>/opt/stacks/...</code><a class="headerlink" href="#local-zfs-optstacks" title="Permanent link">&para;</a></h3>
<p>Tier-1 state and anything that should NOT be NFS-backed.</p>
<table>
<thead>
<tr>
<th>Service</th>
<th>CT</th>
<th>Local path → in container</th>
<th>Backed up?</th>
<th>Notes</th>
</tr>
</thead>
<tbody>
<tr>
<td>Pocket-ID</td>
<td><strong>110</strong></td>
<td><code>/opt/stacks/pocketid/data</code><code>/app/data</code></td>
<td>none</td>
<td>CT 110 has no NFS mount at all. Earlier doc said UNAS — incorrect.</td>
</tr>
<tr>
<td>Garage (S3 meta + data)</td>
<td>104</td>
<td><code>/opt/stacks/shared-db/garage/{data,meta}</code><code>/var/lib/garage/*</code></td>
<td>none</td>
<td><strong>moved off NFS</strong> 2026-05-19 after WAL-G outage. Stale copy may still exist on UNAS.</td>
</tr>
<tr>
<td>Shared Postgres (multi-stack)</td>
<td>104</td>
<td>docker named volume <code>shared-db_shared-pgdata</code></td>
<td><strong>WAL-G → local Garage</strong> (configured; outage 2026-05-19 prompted move)</td>
<td>Garage itself is single-disk local — no off-host copy.</td>
</tr>
<tr>
<td>n8n</td>
<td>104</td>
<td><code>/opt/stacks/n8n/data</code><code>/home/node/.n8n</code></td>
<td>none</td>
<td><strong>back to local</strong> after PG migration attempt failed. Stale 408 MB <code>database.sqlite</code> left on UNAS (May 15) — clean up. n8n now uses <code>shared-postgres</code> as its actual DB.</td>
</tr>
<tr>
<td>Arcane</td>
<td>104</td>
<td><code>/opt/stacks/arcane/data</code><code>/app/data</code></td>
<td>none</td>
<td>reverted from UNAS to local 2026-05-19 (undocumented before now)</td>
</tr>
<tr>
<td>Karakeep + Meilisearch</td>
<td>104</td>
<td><code>/opt/stacks/karakeep/localdata/{data,meili}</code></td>
<td>none</td>
<td>reverted from UNAS to local</td>
</tr>
<tr>
<td>Immich Postgres (pgvector)</td>
<td>104</td>
<td><code>/opt/stacks/immich/postgres</code><code>/var/lib/postgresql/data</code></td>
<td>Immich pg_dump → UNAS</td>
<td>tier-1; PG demands local disk</td>
</tr>
<tr>
<td>Homepage</td>
<td>104</td>
<td><code>/opt/stacks/homepage/{config,icons}</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>Dozzle</td>
<td>104</td>
<td><code>/opt/stacks/dozzle/dozzle_data</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>LiteLLM config</td>
<td>104</td>
<td><code>/opt/stacks/ai/litellm-config</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>SearXNG config</td>
<td>104</td>
<td><code>/opt/stacks/ai/searxng</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>Flaresolverr</td>
<td>104</td>
<td><code>/var/lib/flaresolver</code></td>
<td>none</td>
<td></td>
</tr>
<tr>
<td>AdGuard / Zoraxy / DNS / Shepard / Backrest binaries</td>
<td>102/108/103/101</td>
<td>local zfs only</td>
<td>none</td>
<td>Backrest itself has no self-backup</td>
</tr>
<tr>
<td>Vaultwarden (attachments + key material)</td>
<td>104</td>
<td><code>/opt/stacks/vaultwarden/data</code><code>/data</code></td>
<td>none</td>
<td><strong>moved off NFS 2026-05-22</strong>; DB is on CT 113 postgres; stale <code>db.sqlite3</code> deleted</td>
</tr>
<tr>
<td>Nextcloud config + sidecars</td>
<td>105</td>
<td>local zfs (CT rootfs)</td>
<td>none</td>
<td>app data on NFS — see below</td>
</tr>
</tbody>
</table>
<h3 id="garage-s3-buckets-on-local-zfs-ct-104">Garage S3 buckets (on local zfs, CT 104)<a class="headerlink" href="#garage-s3-buckets-on-local-zfs-ct-104" title="Permanent link">&para;</a></h3>
<table>
<thead>
<tr>
<th>Bucket</th>
<th>Access key</th>
<th>Use</th>
<th>Public URL</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>lobe-files</code></td>
<td>GK55210… (from <code>.env</code>)</td>
<td>LobeHub file uploads + WAL-G PG backups</td>
<td>internal only</td>
</tr>
<tr>
<td><code>chat-artifacts</code></td>
<td>GK50bfc…</td>
<td>AI chat output artefacts (images, reports, SVG)</td>
<td><code>https://chat-artifacts.s3.nuclide.systems/&lt;key&gt;</code></td>
</tr>
</tbody>
</table>
<h3 id="docker-named-volumes">Docker named volumes<a class="headerlink" href="#docker-named-volumes" title="Permanent link">&para;</a></h3>
<p>Local on <code>/var/lib/docker/volumes/</code>. Mostly databases and caches.</p>
<table>
<thead>
<tr>
<th>Volume</th>
<th>Service / CT</th>
<th>Backed up?</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>shared-db_shared-pgdata</code></td>
<td>shared-postgres / 104</td>
<td>WAL-G → local Garage</td>
</tr>
<tr>
<td><code>paperless-ngx_pgdata</code>, <code>_redisdata</code>, <code>_data</code></td>
<td>paperless-ngx / 104</td>
<td>none</td>
</tr>
<tr>
<td><code>lobe-postgres</code> + <code>lobe-redis</code></td>
<td>lobehub / 104</td>
<td>none</td>
</tr>
<tr>
<td><code>nuc-ai-core_rustfs-data</code></td>
<td>lobehub stack / 104</td>
<td>none</td>
</tr>
<tr>
<td><code>pgadmin-data</code></td>
<td>pgadmin / 104</td>
<td>none (regenerable)</td>
</tr>
<tr>
<td><code>immich_model-cache</code></td>
<td>immich-ml / 104</td>
<td>regenerable</td>
</tr>
<tr>
<td><code>coder-db</code> + <code>gitea-db</code> (docker volume <code>coder-db</code>)</td>
<td>/ 111</td>
<td>none</td>
</tr>
<tr>
<td>(orphaned) <code>daytona-minimal_db_data</code> + runner anon vol</td>
<td>/ 104</td>
<td>none — clean up post-decommission</td>
</tr>
</tbody>
</table>
<h3 id="nextcloud-ct-105-data-on-nfs">Nextcloud (CT 105) — data on NFS<a class="headerlink" href="#nextcloud-ct-105-data-on-nfs" title="Permanent link">&para;</a></h3>
<p>Nextcloud AIO mounts <code>/mnt/pve/unas/services/nextcloud</code> via NFSv3 (same share as all other CTs). Migrated from CIFS on 2026-05-22 after the CIFS mount caused a crash-loop. The Postgres + Redis sidecars stay on local docker volumes.</p>
<h2 id="backup-reality">Backup reality<a class="headerlink" href="#backup-reality" title="Permanent link">&para;</a></h2>
<p><strong>There is effectively no off-host backup of service data.</strong> The only configured Backrest plan covers <code>/mnt/pve/unas/media/data-dir → jottacloud</code> — i.e., Backrest backs up <em>one specific UNAS path</em>, not the services that write to UNAS.</p>
<p>Coverage:</p>
<ul>
<li>Immich pg_dump → UNAS (same filer; survives container loss, not filer loss)</li>
<li>shared-postgres WAL-G → Garage (same host; survives container loss, not disk loss)</li>
<li>Everything else: zero</li>
</ul>
<p>This is a known gap. Plans:
1. Extend Backrest plans to snapshot tier-1 paths (Pocket-ID sqlite, Vaultwarden data, Gitea repos, Coder workspace homes) to jottacloud nightly.
2. Once the second NVMe lands (see <code>infra/proxmox-state.md</code> §6), mirror <code>rpool</code> so a single disk death doesn't take everything.</p>
<h2 id="drift-cleanup-todo">Drift cleanup TODO<a class="headerlink" href="#drift-cleanup-todo" title="Permanent link">&para;</a></h2>
<ul>
<li>[x] ~~Remove stale <code>services/n8n/database.sqlite</code> from UNAS~~ — gone (verified 2026-05-22)</li>
<li>[x] ~~Remove stale <code>services/shared-db/garage/</code> copy from UNAS~~ — gone (verified 2026-05-22)</li>
<li>[x] ~~Remove orphaned <code>daytona-minimal_db_data</code> Docker volume on CT 104~~ — gone (verified 2026-05-22)</li>
<li>[x] ~~Vaultwarden <code>data/</code> on UNAS~~ — migrated to local zfs 2026-05-22. Stale NFS copy at <code>services/vaultwarden/</code> can be cleaned up.</li>
<li>[x] ~~Add a Backrest plan for Pocket-ID DB~~ — done 2026-05-22. Pre-backup hook runs <code>pocket-id export</code> + copies keys to UNAS staging; <code>services-backup-plan</code> snapshots staging → jottacloud nightly.</li>
</ul>
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