Larger block size on data partition

Fixes #76

Author: rgaudin

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Changed
+
+- Data partition block-size now ~1Mib instead of 1KiB
+- Data partition reserved blocks for root to 1% instead of 5%
+
 ## [1.3.1] - 2025-03-25
 
 ### Changed

tree/export-image/prerun.sh

@@ -76,7 +76,7 @@ fi
 mkdosfs -n bootfs -F "$FAT_SIZE" -s 4 -v "$BOOT_DEV" > /dev/null
 mkfs.ext4 -L rootfs -O "$ROOT_FEATURES" "$ROOT_DEV" > /dev/null
 # not using ROOT_FEATURES to allow fs above 2TiB (huge_file) and 4TiB (64b)
-mkfs.ext4 -L data "$DATA_DEV" > /dev/null
+mkfs.ext4 -T largefile -m 1 -L data "$DATA_DEV" > /dev/null
 
 mount -v "$ROOT_DEV" "${ROOTFS_DIR}" -t ext4
 mkdir -p "${ROOTFS_DIR}/boot/firmware"