sig_cloud/diskimage-builder
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Short circuit qemu-img convert for raw images

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We currently use qemu-img convert with a raw source and dest when
building raw images. We can just mv the file for increased speed.

Change-Id: I3da095cb9ecad7224a121a434a9fb204132bf6df
This commit is contained in:
Gregory Haynes 2015-03-25 21:34:13 +00:00
parent 100959de8d
commit 2d79e9d395
2 changed files with 19 additions and 5 deletions
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16
bin/disk-image-create
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@ -45,7 +45,7 @@ function show_options () {
echo "Options:"
echo " -a i386|amd64|armhf -- set the architecture of the image(default amd64)"
echo " -o imagename -- set the imagename of the output image file(default image)"
echo " -t qcow2,tar -- set the image types of the output image files (default qcow2)"
echo " -t qcow2,tar,raw -- set the image types of the output image files (default qcow2)"
echo " File types should be comma separated"
echo " -x -- turn on tracing"
echo " -u -- uncompressed; do not compress the image - larger but faster"
@ -247,14 +247,24 @@ done
unmount_image
has_raw_type=
if [ "$IS_RAMDISK" == "0" ]; then
for IMAGE_TYPE in ${IMAGE_TYPES[@]} ; do
compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE
# We have to do raw last because it is destructive
if [ "$IMAGE_NAME" = "raw" ]; then
has_raw_type=1
else
compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE
fi
done
fi
if [ -n "$has_raw_type" ]; then
IMAGE_TYPE="raw"
compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE
fi
# Always cleanup after ourselves
rm $TMP_IMAGE_PATH
rm -f $TMP_IMAGE_PATH
cleanup_dirs
case "$IMAGE_ELEMENT" in

8
lib/img-functions
View file

@ -115,8 +115,12 @@ function compress_and_save_image () {
else
EXTRA_OPTIONS=""
fi
echo "Converting image using qemu-img convert"
qemu-img convert ${COMPRESS_IMAGE:+-c} -f raw $TMP_IMAGE_PATH -O $IMAGE_TYPE $EXTRA_OPTIONS $1-new
if [ "$IMAGE_TYPE" = "raw" ]; then
mv $TMP_IMAGE_PATH $1-new
else
echo "Converting image using qemu-img convert"
qemu-img convert ${COMPRESS_IMAGE:+-c} -f raw $TMP_IMAGE_PATH -O $IMAGE_TYPE $EXTRA_OPTIONS $1-new
fi
OUT_IMAGE_PATH=$1-new
finish_image $1