support specify sector size in ubuntu-image

Signed-off-by: Zhai Zhaoxuan <zhai.zhaoxuan@canonical.com>

debian/changelog

@@ -1,8 +1,12 @@
-livecd-rootfs (24.10.5) UNRELEASED; urgency=medium
+livecd-rootfs (24.10.5ubuntu1) UNRELEASED; urgency=medium
 
+  [ Erich Eickmeyer ]
   * Switch Ubuntu Studio to generic kernel
 
- -- Erich Eickmeyer <eeickmeyer@ubuntu.com>  Wed, 19 Jun 2024 15:52:04 -0700
+  [ Zhaoxuan Zhai ]
+  * support config sector size in ubuntu-image
+
+ -- Zhaoxuan Zhai <zhai.zhaoxuan@canonical.com>  Thu, 27 Jun 2024 09:58:27 +0800
 
 livecd-rootfs (24.10.4) oracular; urgency=medium
 

live-build/auto/config

@@ -464,6 +464,9 @@ case $IMAGEFORMAT in
 			echo "$NOW" > config/disk-info
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --disk-info config/disk-info"
 		fi
+		if [ -n "$SECTOR_SIZE" ]; then
+			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --sector-size=$SECTOR_SIZE"
+		fi
 
 		if [ $PROJECT = "ubuntu-core" ]; then
 			# snap-based core images
@@ -521,7 +524,6 @@ case $IMAGEFORMAT in
 				UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --snap=$snap"
 			done
 			echo "IMAGEFORMAT=$IMAGEFORMAT" >> config/common
-			echo "UBUNTU_IMAGE_ARGS=\"$UBUNTU_IMAGE_ARGS\"" >> config/common
 			# Store model assertion in top dir to get it picked up later as a build artifact
 			env SNAPPY_STORE_NO_CDN=1 snap known --remote model series=16 model="$MODEL" brand-id=canonical > "$PREFIX".model-assertion
 			echo "Configured ubuntu-image for the following model assertion:"
@@ -551,6 +553,7 @@ case $IMAGEFORMAT in
 		# Save the model name used for building, mostly for any model-specific hook execution
 		echo "MODEL=$MODEL" >> config/common
 		echo "IMAGEFORMAT=$IMAGEFORMAT" >> config/common
+		echo "UBUNTU_IMAGE_ARGS=\"$UBUNTU_IMAGE_ARGS\"" >> config/common
 		# Fake finished configuration for lb build
 		mkdir -p .build
 		touch .build/config