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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.

(From OE-Core rev: 8aac6ecc5194c734dfd3d677017ab3ea045b2339)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Darren Hart 2012-07-03 16:21:57 -07:00 committed by Richard Purdie
parent 6f932f80bb
commit 7af1525794
1 changed files with 4 additions and 4 deletions
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8
meta/recipes-core/initrdscripts/files/init-install.sh
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@ -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