updater: Implement facility to resize data partition

In some cases, we do not want to repartition the disk but only resize the data partition to expand into full SD card. This will be useful in cases where SD card based rootfs is used and does not have second media to install from. Implements #579 Signed-off-by: Khem Raj <[email protected]>
YoeDistro · Sep 11, 2021 · 061cf8b · 061cf8b
1 parent 1c56171
commit 061cf8b
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diff --git a/sources/meta-yoe/recipes-support/updater/files/updater.installer b/sources/meta-yoe/recipes-support/updater/files/updater.installer
@@ -97,6 +97,24 @@ initialize() {
   mkdir -p $DATA_MOUNT_POINT
 }
 
+resize_sd() {
+  echo "Resizing data partition started ..." || return 1
+  if [ -z "$1" ]; then
+    DEVICE=$SD_DEVICE
+  else
+    DEVICE=$1
+  fi
+  sync
+  umount ${DEVICE}p3
+  PART_SIZE=$(cat "/sys/block/${DEVICE}p3/size")
+  # only continue if partition size is 1MB
+  if [ $PART_SIZE -gt 2048 ]; then
+    return 0
+  fi
+  echo "- +" | sfdisk -N 3 ${DEVICE}
+  resize2fs ${DEVICE}p3
+}
+
 partition_sd() {
   echo "Partitioning started ..." || return 1
   if [ -z "$1" ]; then
@@ -178,6 +196,10 @@ partition_emmc() {
   partition_sd $EMMC_DEVICE
 }
 
+resize_emmc() {
+  resize_sd $EMMC_DEVICE
+}
+
 format_emmc_boot() {
   mkfs.${BOOT_FSTYPE} -I -n "BOOT" $EMMC_BOOT_DEV || return 1
 }
@@ -484,6 +506,10 @@ boot() {
   umount_usb
   umount_sd
   umount_data
+  if ! resize_${STORAGE}; then
+    msg_splash "Resizing ${STORAGE} failed, bad media"
+    sleep 9999d
+  fi
 
   if [ -e $EMMC_BOOT_DEV ]; then
     msg_splash "Booting from EMMC ..."

diff --git a/sources/meta-yoe/recipes-support/updater/updater_1.0.bb b/sources/meta-yoe/recipes-support/updater/updater_1.0.bb
@@ -19,3 +19,6 @@ do_install() {
 }
 
 FILES:${PN} += "/init /platform /dev ${datadir}"
+
+RDEPENDS:${PN} += "e2fsprogs-resize2fs util-linux-sfdisk"
+
Original file line number	Diff line number	Diff line change
Expand Up		@@ -19,3 +19,6 @@ do_install() {
		}

		FILES:${PN} += "/init /platform /dev ${datadir}"

		RDEPENDS:${PN} += "e2fsprogs-resize2fs util-linux-sfdisk"