[OE-core] [PATCH] image: use du --apparent-size when calculating rootfs size

[Ross Burton]

We should pass --apparent-size to du when calculating how large the rootfs is as
otherwise we get the actual disk usage, which if the files are compressed by the
file system (such as ZFS) may be sufficiently smaller than the space required by
the image that construction will fail.

Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/classes/image.bbclass | 1 +
 1 file changed, 1 insertion(+)

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 4531aa2a57a..8e763e4d543 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -534,6 +534,7 @@ def get_rootfs_size(d):
     initramfs_maxsize = d.getVar('INITRAMFS_MAXSIZE')
 
     output = subprocess.check_output(['du', '-ks',
+                                      '--apparent-size',
                                       d.getVar('IMAGE_ROOTFS')])
     size_kb = int(output.split()[0])
 
-- 
2.11.0