[oe-commits] [openembedded-core] 46/62: image_types: btrfs use sparse file creation
git at git.openembedded.org
git at git.openembedded.org
Sat Jan 6 10:15:21 UTC 2018
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rpurdie pushed a commit to branch rocko
in repository openembedded-core.
commit 8eb20c43232ae87c65d27810e5250676bb1d9675
Author: Saul Wold <sgw at linux.intel.com>
AuthorDate: Wed Dec 6 19:37:10 2017 -0800
image_types: btrfs use sparse file creation
This will speed up file creation and still allow the btrfs tools to
create a full btrfs image. This is similar to what we do for ext234
FS types.
Signed-off-by: Saul Wold <sgw at linux.intel.com>
Signed-off-by: Ross Burton <ross.burton at intel.com>
(cherry picked from commit de2f2fc9e8e6d874a11e69adc2f438975a5c1359)
Signed-off-by: Armin Kuster <akuster808 at gmail.com>
---
meta/classes/image_types.bbclass | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index d09d127..e881d0c 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -104,7 +104,7 @@ IMAGE_CMD_btrfs () {
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=${size} bs=1024
+ dd if=/dev/zero of=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.btrfs seek=${size} count=0 bs=1024
mkfs.btrfs ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.btrfs
}
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