[OE-core] [wic][PATCH v2 7/8] wic: use sparse_copy to copy partitions
Ed Bartosh
ed.bartosh at linux.intel.com
Thu Apr 28 10:58:10 UTC 2016
Copied partition images into final partitioned image using
sparse_copy API. This method preserves sparseness of the
final image. It also makes wic much faster, as unmapped
blocks of the partition images are not copied.
[YOCTO #9099]
Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
---
scripts/lib/wic/utils/partitionedfs.py | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/scripts/lib/wic/utils/partitionedfs.py b/scripts/lib/wic/utils/partitionedfs.py
index ad596d2..1b3870f 100644
--- a/scripts/lib/wic/utils/partitionedfs.py
+++ b/scripts/lib/wic/utils/partitionedfs.py
@@ -22,6 +22,7 @@ import os
from wic import msger
from wic.utils.errors import ImageError
from wic.utils.oe.misc import exec_cmd, exec_native_cmd
+from wic.filemap import sparse_copy
# Overhead of the MBR partitioning scheme (just one sector)
MBR_OVERHEAD = 1
@@ -338,10 +339,7 @@ class Image(object):
source = part['source_file']
if source:
# install source_file contents into a partition
- cmd = "dd if=%s of=%s bs=%d seek=%d count=%d conv=notrunc" % \
- (source, image_file, self.sector_size,
- part['start'], part['size'])
- exec_cmd(cmd)
+ sparse_copy(source, image_file, part['start'] * self.sector_size)
msger.debug("Installed %s in partition %d, sectors %d-%d, "
"size %d sectors" % \
--
2.1.4
More information about the Openembedded-core
mailing list