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image_types: btrfs use sparse file creation

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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.

(From OE-Core rev: de2f2fc9e8e6d874a11e69adc2f438975a5c1359)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Saul Wold
2017-12-06 19:37:10 -08:00
committed by Richard Purdie
parent 3002e18c26
commit cc30969e98
1 changed files with 1 additions and 1 deletions
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meta/classes/image_types.bbclass
+1 -1
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@@ -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
}