init-install: Clean up partition alignment

The current partitioning scheme leaves a 1MB gap between all the
generated partitions by adding a 1 to the end of the last partition to
use as the start of the next. parted is smart enough to not overlap
start and end positions of the same value. This avoids the 1 MB gaps.

Rather than pad the disk with 1MB in the beginning and cut it off at the
MB boundary on the end, we can use 0% and 100% to allow parted to do the
required math and use as much of the disk as possible.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>

diff --git a/meta/recipes-core/initrdscripts/files/init-install.sh b/meta/recipes-core/initrdscripts/files/init-install.sh
index 8d21dd1f58a14cf49d786741a7945a2a239a12fd..0ac4949355c3cf2bc1bb501eba58ad74b8142217 100644 (file)
--- a/meta/recipes-core/initrdscripts/files/init-install.sh
+++ b/meta/recipes-core/initrdscripts/files/init-install.sh
@@ -84,9 +84,9 @@ disk_size=$(parted /dev/${device} unit mb print | grep Disk | cut -d" " -f 3 | s
 swap_size=$((disk_size*swap_ratio/100))
 rootfs_size=$((disk_size-boot_size-swap_size))
 
-rootfs_start=$((boot_size + 1))
+rootfs_start=$((boot_size))
 rootfs_end=$((rootfs_start+rootfs_size))
-swap_start=$((rootfs_end+1))
+swap_start=$((rootfs_end))
 
 # MMC devices are special in a couple of ways
 # 1) they use a partition prefix character 'p'
@@ -113,13 +113,13 @@ echo "Creating new partition table on /dev/${device} ..."
 parted /dev/${device} mklabel msdos
 
 echo "Creating boot partition on $bootfs"
-parted /dev/${device} mkpart primary 1 $boot_size
+parted /dev/${device} mkpart primary 0% $boot_size
 
 echo "Creating rootfs partition on $rootfs"
 parted /dev/${device} mkpart primary $rootfs_start $rootfs_end
 
 echo "Creating swap partition on $swap"
-parted /dev/${device} mkpart primary $swap_start $disk_size
+parted /dev/${device} mkpart primary $swap_start 100%
 
 parted /dev/${device} print