fix: make the database disk image 6 GB instead of 2 GB

- VOLUMES["db"] goes from 2048 to 6144 MiB, so every new instance gets a 6 GB database image.
  Instance 4 filled its 2 GB image with analytics logs on 2026-10-14: Postgres crashed and could
  not finish crash recovery without free space. Instance 2 had already been grown to 6 GB by hand.
- Measured on instance 2: about 1.2 GB of logs a day under browser-test traffic, kept for
  LOG_RETENTION (2 days), plus up to 1 GB of write-ahead log. That peaks near 4.5 GB.
- Only instances created after this change get the larger image; existing ones keep their size.
- README disk line, the two unit tests that assert the db volume size, and the version
  (1.6.3 -> 1.6.4 in VERSION, supaspin and README.md) are updated.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

README.md

@@ -1,6 +1,6 @@
 # supaspin
 
-Version 1.6.3
+Version 1.6.4
 
 Create, list, show and delete throwaway [Supabase](https://supabase.com) instances on a
 single-node [microk8s](https://microk8s.io) server, from a terminal menu.
@@ -16,7 +16,7 @@ endangering them. Nothing in it is specific to any one app.
 | Web API | `https://<slot hostname>` (auth, rest, graphql, realtime, storage, functions); the certificate is from Let's Encrypt when that is enabled, otherwise self-signed |
 | Postgres | `<LAN IP>:544N` (instance 1 → 5441, 2 → 5442, …); which addresses listen is set by **Port bind** |
 | Studio (admin UI) | `http://<LAN IP>:300N` (3001, 3002, …), not on the public hostname |
-| Disk | fixed-size ext4 image files, mounted at boot: **db 2 GB, storage 1 GB, every other volume 256 MB** |
+| Disk | fixed-size ext4 image files, mounted at boot: **db 6 GB, storage 1 GB, every other volume 256 MB** |
 | Memory | limits add up to **9 GiB** per instance, requests to 1.875 GiB (table below) |
 | Priority | pods run at priority -100 (`supaspin-low`); when the server runs short of memory they are evicted first and never evict anyone else |
 | Secrets | generated fresh per instance: JWT secret, anon and service keys, Postgres password, Studio password, and the internal keys |

VERSION

@@ -1 +1 @@
-1.6.3
+1.6.4

supaspin

@@ -39,7 +39,7 @@ import tty
 
 import yaml
 
-VERSION = "1.6.3"
+VERSION = "1.6.4"
 CONFIG_PATH = os.environ.get("SUPASPIN_CONFIG", "/etc/supaspin/config.yaml")
 STATE_DIR = os.environ.get("SUPASPIN_STATE", "/var/lib/supaspin")
 CHART_REPO = "https://supabase-community.github.io/supabase-kubernetes"
@@ -53,7 +53,10 @@ CERTS_NS = "supaspin-certs"
 
 # Image cap per volume, in MiB. The chart's separate imgproxy volume is not used: imgproxy has to
 # read the uploaded files, so it mounts the storage volume instead (see instance_values).
-VOLUMES = {"db": 2048, "storage": 1024, "functions": 256,
+# The db image is 6 GB because of the analytics logs: browser-test traffic wrote about 1.2 GB of
+# logs a day on instance 2 (2026-10-14), the nightly cleanup keeps LOG_RETENTION of them, and the
+# write-ahead log may take up to 1 GB on top. That peaks near 4.5 GB; 2 GB filled up on instance 4.
+VOLUMES = {"db": 6144, "storage": 1024, "functions": 256,
            "snippets": 256, "deno": 256, "pgsodium": 256}
 # The user Postgres runs as inside supabase/postgres 17.6.1.136 (`id postgres` in the image).
 # Production's older image used 2000; do not copy that number.

tests/test_supaspin.py

@@ -143,7 +143,7 @@ class Values(unittest.TestCase):
 
     def test_volume_caps(self):
         p = self.v["persistence"]
-        self.assertEqual(p["db"]["size"], "2048Mi")
+        self.assertEqual(p["db"]["size"], "6144Mi")
         self.assertEqual(p["storage"]["size"], "1024Mi")
         for vol in ("functions", "snippets", "deno", "pgsodium"):
             self.assertEqual(p[vol]["size"], "256Mi")
@@ -478,7 +478,7 @@ class Manifests(unittest.TestCase):
         pv = sp.pv_manifest(CFG, 2, "db")
         self.assertEqual(pv["spec"]["claimRef"], {"namespace": "supaspin-2", "name": "supa2-supabase-db"})
         self.assertEqual(pv["spec"]["local"]["path"], "/data/supabase/2/db/data")
-        self.assertEqual(pv["spec"]["capacity"]["storage"], "2048Mi")
+        self.assertEqual(pv["spec"]["capacity"]["storage"], "6144Mi")
         self.assertEqual(pv["spec"]["persistentVolumeReclaimPolicy"], "Retain")
         self.assertEqual(pv["spec"]["nodeAffinity"]["required"]["nodeSelectorTerms"][0]
                          ["matchExpressions"][0]["values"], ["node1"])