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btrfs: create an empty file to build the fs in

PATCH New Saul Wold 1 participant 1 message Jan 30, 2015

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Saul Wold

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PATCH 1/1 btrfs: create an empty file to build the fs in

The newer btrfs-utils needs an empty file to build the filesystem in, so create an empty file and use it for the mkfs to build the fs in.

[YOCTO #6804]

Signed-off-by Saul Wold <[email protected]>
---
 meta/classes/image_types.bbclass | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
meta/classes/image_types.bbclass +2 -2
index 0c27f29..d6cc87f 100644
@@ -59,8 +59,8 @@ IMAGE_CMD_ext3 = "oe_mkext234fs ext3 ${EXTRA_IMAGECMD}"
 IMAGE_CMD_ext4 = "oe_mkext234fs ext4 ${EXTRA_IMAGECMD}"
 
 IMAGE_CMD_btrfs () {
-	touch ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs
-	mkfs.btrfs -b `expr ${ROOTFS_SIZE} \* 1024` ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs
+	dd if=/dev/zero of=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs count=${ROOTFS_SIZE} bs=1024
+	mkfs.btrfs ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs
 }
 
 IMAGE_CMD_squashfs = "mksquashfs ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.squashfs ${EXTRA_IMAGECMD} -noappend"
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