[LouisHitchcock]

spiffs on custom_8mb.csv is 1 MB. It was sized in v1.3.1, when data/ was
around 650 KB. data/ is now 907 KB on v1.7.3, and LittleFS rounds every file up
to a 4096-byte block, so the filesystem image is roughly 95% full and any further
UI work fails to build:

lfs warn:475: No more free space
lfs_write error(-28): File system is full.

That is not hypothetical — it currently blocks #15.

Why the table, rather than shrinking data/

Nothing was using the 2.94 MB of the 8 MB chip past 0x510000, and the layout was
lopsided. The 4 MB SuperMini already gets 1.4 MB of filesystem and the 16 MB
XIAO S3 Plus gets 2 MB, so the 8 MB boards had the smallest filesystem of any
target.

spiffs becomes 0x3E0000 (3.875 MB), which takes the image to about 25% full,
and the last 64 KB becomes a coredump partition so panics leave a backtrace.
The table now ends exactly at 0x800000.

Compatibility

• nvs, otadata, app0 and app1 keep their original offsets and sizes, so
  an OTA app update still lands correctly and saved settings survive.
• spiffs keeps its 0x410000 offset, so the documented esptool command,
  .github/workflows/manual-release-build.yml and every per-release
  FLASH_INSTRUCTIONS.txt are unchanged.

Affects all seven targets using custom_8mb.csv: FPVGateAIO, FPVGateLCDAIO,
FPVGateSolo, ESP32S3, SeeedXIAOESP32S3, LilyGOTEnergyS3, WaveshareESP32S3LCD2.

Release note required

A device that OTA-updates only the app keeps its old 1 MB table, so it cannot take
a filesystem image built against this one. Those users need one full reflash
(bootloader + partitions + firmware + littlefs) to migrate. This must be called
out in the release notes for whichever version ships it.

Verified

FPVGateAIO, ESP32S3 and FPVGateSolo all build a 4,063,232 byte image.
Flashed to an AIO: the self test reports LittleFS Total: 3968KB, Used: 1028KB, R/W OK and Storage Type: SD, and the web UI serves normally.

[coderabbitai]

Important

Review skipped

Review was skipped due to path filters

⛔ Files ignored due to path filters (1)

• custom_8mb.csv is excluded by !**/*.csv

CodeRabbit blocks several paths by default. You can override this behavior by explicitly including those paths in the path filters. For example, including **/dist/** will override the default block on the dist directory, by removing the pattern from both the lists.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 79a1422c-f969-4e3f-bc93-13277c287a71

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}