[DONE] Implementation of own growdisk architecture.

This is temporarily till we switch to A/B mirrored rootfs
and data-overlay for all writable mounts.

buildroot-external/Config.in

@@ -7,6 +7,7 @@ menu "Additional drivers, libraries and/or applications"
 	source "$BR2_EXTERNAL_OPENVOICEOS_PATH/package/docbook-xml/Config.in"
 	source "$BR2_EXTERNAL_OPENVOICEOS_PATH/package/docbook-xsl/Config.in"
 	source "$BR2_EXTERNAL_OPENVOICEOS_PATH/package/fann/Config.in"
+	source "$BR2_EXTERNAL_OPENVOICEOS_PATH/package/growdisk-service/Config.in"
 	source "$BR2_EXTERNAL_OPENVOICEOS_PATH/package/hostname-service/Config.in"
 menu "KDE Framework and Plasma"
 	source "$BR2_EXTERNAL_OPENVOICEOS_PATH/package/kf5-attica/Config.in"

buildroot-external/configs/rpi4_64-gui_defconfig

@@ -288,6 +288,10 @@ BR2_PACKAGE_WILC1000_FIRMWARE=y
 BR2_PACKAGE_WILINK_BT_FIRMWARE=y
 BR2_PACKAGE_ZD1211_FIRMWARE=y
 BR2_PACKAGE_DBUS_CPP=y
+BR2_PACKAGE_GPTFDISK=y
+BR2_PACKAGE_GPTFDISK_GDISK=y
+BR2_PACKAGE_GPTFDISK_SGDISK=y
+BR2_PACKAGE_GPTFDISK_CGDISK=y
 BR2_PACKAGE_KBD=y
 BR2_PACKAGE_PARTED=y
 BR2_PACKAGE_RASPI_GPIO=y
@@ -409,7 +413,6 @@ BR2_PACKAGE_LINUX_PAM=y
 BR2_PACKAGE_PROTOBUF=y
 BR2_PACKAGE_LIBESTR=y
 BR2_PACKAGE_LIBUNISTRING=y
-BR2_PACKAGE_NCURSES_WCHAR=y
 BR2_PACKAGE_NCURSES_TARGET_PROGS=y
 BR2_PACKAGE_PCRE_16=y
 BR2_PACKAGE_PCRE_32=y
@@ -464,6 +467,7 @@ BR2_PACKAGE_SYSTEMD_RANDOMSEED=y
 BR2_PACKAGE_SYSTEMD_REPART=y
 # BR2_PACKAGE_SYSTEMD_RESOLVED is not set
 BR2_PACKAGE_TAR=y
+BR2_PACKAGE_UTIL_LINUX_BINARIES=y
 BR2_PACKAGE_UTIL_LINUX_HWCLOCK=y
 BR2_PACKAGE_UTIL_LINUX_KILL=y
 BR2_PACKAGE_UTIL_LINUX_MORE=y
@@ -494,6 +498,7 @@ BR2_PACKAGE_ALSA_PLUGINS=y
 BR2_PACKAGE_BARESIP=y
 BR2_PACKAGE_BTSPEAKER=y
 BR2_PACKAGE_FANN=y
+BR2_PACKAGE_GROWDISK_SERVICE=y
 BR2_PACKAGE_HOSTNAME_SERVICE=y
 BR2_PACKAGE_KF5_BREEZE_ICONS=y
 BR2_PACKAGE_KF5_KACTIVITIES=y

buildroot-external/package/growdisk-service/Config.in

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_GROWDISK_SERVICE
+	bool "growdisk-service"
+	help
+	  A systemd service that only runs on file flag
+	  to auto expand the filesystem over the full size 
+	  of the used disk.

buildroot-external/package/growdisk-service/growdisk

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# Get active block device
+DEVICE_ROOTFS="$(findfs UUID=c0932a41-44cf-463b-8152-d43188553ed4)"
+DEVICE="/dev/$(lsblk -no pkname "${DEVICE_ROOTFS}")"
+
+# Fix GPT header backup file
+sgdisk -e "${DEVICE}" &&
+partprobe "${DEVICE}" &&
+
+# Resize needed?
+UNUSED=$(sfdisk -Fq "${DEVICE}" | cut -d " " -f 3 | tail -1)
+if [ -z "${UNUSED}" ] || [ "${UNUSED}" -le "16384" ]; then
+    echo "[INFO] No resize of rootfs partition needed"
+    exit 0
+else
+    echo "[INFO] Resizing the rootfs partition"
+    parted "${DEVICE}" unit % resizepart 2 100% &&
+    partprobe "${DEVICE}" &&
+    sync &&
+    resize2fs "${DEVICE_ROOTFS}" &&
+    echo "[OK]"
+fi
+

buildroot-external/package/growdisk-service/growdisk-service.mk

@@ -0,0 +1,20 @@
+################################################################################
+#
+# growdisk-service
+#
+################################################################################
+
+GROWDISK_SERVICE_VERSION = 0.1.0
+GROWDISK_SERVICE_SITE = $(BR2_EXTERNAL_OPENVOICEOS_PATH)/package/growdisk-service
+GROWDISK_SERVICE_SITE_METHOD = local
+GROWDISK_SERVICE_LICENSE = Apache License 2.0
+GROWDISK_SERVICE_LICENSE_FILES = LICENSE
+
+define GROWDISK_SERVICE_INSTALL_TARGET_CMDS
+	$(INSTALL) -m 0755 $(@D)/growdisk $(TARGET_DIR)/usr/sbin/
+	$(INSTALL) -D -m 644 $(@D)/growdisk.service \
+		$(TARGET_DIR)/usr/lib/systemd/system/growdisk.service
+	touch $(TARGET_DIR)/etc/growdisk
+endef
+
+$(eval $(generic-package))

buildroot-external/package/growdisk-service/growdisk.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Growdisk service to auto expand the rootfs partition
+DefaultDependencies=no
+Conflicts=shutdown.target
+After=systemd-remount-fs.service
+Before=sysinit.target shutdown.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/sbin/growdisk
+
+[Install]
+WantedBy=sysinit.target

buildroot-external/rootfs-overlay/usr/lib/repart.d/50-root.conf

@@ -1,2 +0,0 @@
-[Partition]
-Type=root

buildroot-external/rootfs-overlay/usr/lib/systemd/system-preset/10-ovos.preset

@@ -1,5 +1,5 @@
-enable systemd-repart.service
 enable prepare_system.service
+enable growdisk.service
 enable hostname.service
 enable sshd.service
 enable brcm_bt.service