[OE-core] [PATCH 1/5] Revert "wic/utils/partitionedfs.py: assemble .wic images as sparse files"
Ross Burton
ross.burton at intel.com
Tue Apr 12 14:51:50 UTC 2016
It turns out that dd's conv=sparse doesn't look at the file extents, but simply
checks if a "block" is all zero. If the block of zero was meaningful it gets
lost and if the image is subsequently written to media using a sparse-aware
writer then the block of zeros won't be written at all.
This reverts commit 5fd592fbae2e046bcb8c3a6c3ef4993fe0400676.
Signed-off-by: Ross Burton <ross.burton at intel.com>
---
scripts/lib/wic/utils/partitionedfs.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/lib/wic/utils/partitionedfs.py b/scripts/lib/wic/utils/partitionedfs.py
index 3e2b420..5a103bb 100644
--- a/scripts/lib/wic/utils/partitionedfs.py
+++ b/scripts/lib/wic/utils/partitionedfs.py
@@ -340,7 +340,7 @@ 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,sparse" % \
+ 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)
--
2.8.0.rc3
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