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sdcard_image bbclass: add proper ext4 support, fix inode calculations, etc, etc

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Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
This commit is contained in:
Koen Kooi
2011-11-07 18:07:55 +01:00
parent bea48dbf4f
commit d51ebcf4b4
1 changed files with 24 additions and 11 deletions
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classes/sdcard_image.bbclass
+24 -11
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@@ -15,6 +15,9 @@ LOOPDEV_FS ?= "/dev/loop3"
# Default to 4GiB images
SDIMG_SIZE ?= "444"
# FS type for rootfs
ROOTFSTYPE ?= "ext3"
BOOTPARTNAME_beaglebone = "BEAGLE_BONE"
BOOTPARTNAME ?= "${MACHINE}"
@@ -119,22 +122,32 @@ IMAGE_CMD_sdimg () {
umount ${WORKDIR}/tmp-mnt-boot
${LOSETUP} -d ${LOOPDEV_BOOT} || true
# Prepare ext3 parition
echo "Creating ext3 loopback"
# Prepare rootfs parition
echo "Creating rootfs loopback"
${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET}
# should use fdisk info
echo "Creating ext3 image"
touch ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
# lots of small files, so use 8k per inode, not 64k
genext2fs -i 4096 -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
echo "Creating rootfs image"
touch ${WORKDIR}/${IMAGE_NAME}.rootfs.img
#ext4 support
#cp ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3 ${WORKDIR}/${IMAGE_NAME}.rootfs.ext4
#tune2fs -O extents,uninit_bg,dir_index ${WORKDIR}/${IMAGE_NAME}.rootfs.ext4
FS_NUM_INODES=$(echo $FS_SIZE_BLOCKS / 4 | bc)
dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.ext3 of=${LOOPDEV_FS}
case "${ROOTFSTYPE}" in
ext3)
genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.img
tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.img
;;
ext4)
genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.img
tune2fs -L ${IMAGE_NAME} -j -O extents,uninit_bg,dir_index ${WORKDIR}/${IMAGE_NAME}.rootfs.img
;;
*)
echo "Please set ROOTFSTYPE to something supported"
exit 1
;;
esac
dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.img of=${LOOPDEV_FS}
${LOSETUP} -d ${LOOPDEV_FS} || true