[OE-core] [PATCH] image_types: increase filesystem size for BTRFS

[Ed Bartosh]

16777216 bytes is a minimal possible filesystem size for BTRFS.
mkfs.btrfs fails to create a filesystem if rootfs size is too small.

Increased filesystem size to make it possible for mkfs.btrfs
to create an image for small rootfs directories,
e.g. for core-image-minimal.

[YOCTO #11163]

Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
---
 meta/classes/image_types.bbclass | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index d2eb99d..99adeb3 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -82,12 +82,13 @@ IMAGE_CMD_ext4 = "oe_mkext234fs ext4 ${EXTRA_IMAGECMD}"
 
 MIN_BTRFS_SIZE ?= "16384"
 IMAGE_CMD_btrfs () {
-	if [ ${ROOTFS_SIZE} -gt ${MIN_BTRFS_SIZE} ]; then
-		dd if=/dev/zero of=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.btrfs count=${ROOTFS_SIZE} bs=1024
-		mkfs.btrfs ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.btrfs
-	else
-		bbfatal "Rootfs is too small for BTRFS (Rootfs Actual Size: ${ROOTFS_SIZE}, BTRFS Minimum Size: ${MIN_BTRFS_SIZE})"
+	size=${ROOTFS_SIZE}
+	if [ ${size} -lt ${MIN_BTRFS_SIZE} ] ; then
+		size=${MIN_BTRFS_SIZE}
+		bbwarn "Rootfs size is too small for BTRFS. Filesystem will be extended to ${size}K"
 	fi
+	dd if=/dev/zero of=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.btrfs count=${size} bs=1024
+	mkfs.btrfs ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.btrfs
 }
 
 IMAGE_CMD_squashfs = "mksquashfs ${IMAGE_ROOTFS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.squashfs ${EXTRA_IMAGECMD} -noappend"
-- 
2.1.4