[PATCH 3/3] vm-img: Handle sparse files efficiently

[Jan Kiszka <jan.kiszka@siemens.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

Saves space in case the image contains any sparse files.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 meta/classes/vm-img.bbclass | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/meta/classes/vm-img.bbclass b/meta/classes/vm-img.bbclass
index 4bc977b9..27aedf12 100644
--- a/meta/classes/vm-img.bbclass
+++ b/meta/classes/vm-img.bbclass
@@ -93,15 +93,15 @@ do_create_ova() {
         export VM_UUID=$(uuidgen)
         # create ovf
         cat ${PP_WORK}/${OVF_TEMPLATE_STAGE2} | envsubst > ${PP_DEPLOY}/${OVA_NAME}.ovf
-        tar -cvf ${PP_DEPLOY}/${OVA_NAME}.ova -C ${PP_DEPLOY} ${OVA_NAME}.ovf
+        tar -cvSf ${PP_DEPLOY}/${OVA_NAME}.ova -C ${PP_DEPLOY} ${OVA_NAME}.ovf
 
         # VirtualBox needs here a manifest file. VMware does accept that format.
         if [ "${VMDK_SUBFORMAT}" = "monolithicSparse" ]; then
             echo "SHA${OVA_SHA_ALG}(${VIRTUAL_MACHINE_IMAGE_FILE})=$(sha${OVA_SHA_ALG}sum ${PP_DEPLOY}/${VIRTUAL_MACHINE_IMAGE_FILE} | cut -d' ' -f1)" >> ${PP_DEPLOY}/${OVA_NAME}.mf
             echo "SHA${OVA_SHA_ALG}(${OVA_NAME}.ovf)=$(sha${OVA_SHA_ALG}sum ${PP_DEPLOY}/${OVA_NAME}.ovf | cut -d' ' -f1)" >> ${PP_DEPLOY}/${OVA_NAME}.mf
-            tar -uvf ${PP_DEPLOY}/${OVA_NAME}.ova -C ${PP_DEPLOY} ${OVA_NAME}.mf
+            tar -uvSf ${PP_DEPLOY}/${OVA_NAME}.ova -C ${PP_DEPLOY} ${OVA_NAME}.mf
         fi
-        tar -uvf ${PP_DEPLOY}/${OVA_NAME}.ova -C ${PP_DEPLOY} ${VIRTUAL_MACHINE_IMAGE_FILE}
+        tar -uvSf ${PP_DEPLOY}/${OVA_NAME}.ova -C ${PP_DEPLOY} ${VIRTUAL_MACHINE_IMAGE_FILE}
 EOSUDO
 }
 
-- 
2.34.1