From 29bc2f74239bc98a152605c339b8a4fb0a15705b Mon Sep 17 00:00:00 2001
From: Joshua Lock <joshua.lock@collabora.co.uk>
Date: Fri, 8 Apr 2016 10:14:18 +0100
Subject: wic/utils/partitionedfs.py: assemble .wic images as sparse files
The individual partitions created by wic are sparse but without
this change the assembled image is written as one (potentially
very) large file.
Preserve sparseness in the assembled image by passing the sparse
conversion symbol.
[YOCTO #9099]
(From OE-Core rev: 5fd592fbae2e046bcb8c3a6c3ef4993fe0400676)
Signed-off-by: Joshua Lock <joshua.lock@collabora.co.uk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
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 5a103bbc7e..3e2b420875 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" % \
+ cmd = "dd if=%s of=%s bs=%d seek=%d count=%d conv=notrunc,sparse" % \
(source, image_file, self.sector_size,
part['start'], part['size'])
exec_cmd(cmd)
--
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