[oe-commits] [openembedded-core] 02/06: wic: fix generation of partition UUID

[git at git.openembedded.org]

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rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit bdaba95af2b2c9174311374436f184d2a927f6f1
Author: Ed Bartosh <ed.bartosh at linux.intel.com>
AuthorDate: Sun Mar 26 18:28:04 2017 +0300

    wic: fix generation of partition UUID
    
    Partition UUID for msdos partitioning is based on a 4 bytes long
    system identifier. Wic uses random number to generate system
    identifier. For the numbers starting with 0 partition uuid is
    shorter, which makes wic images non-bootable as kernel expects
    8 charactest in PARTUUID parameter.
    
    Padded system identifier with '0' when generating partition UUID
    to make it always 8 characters long. This should fix the boot
    issue.
    
    Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 scripts/lib/wic/plugins/imager/direct.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/lib/wic/plugins/imager/direct.py b/scripts/lib/wic/plugins/imager/direct.py
index 7d38ab3..67fd183 100644
--- a/scripts/lib/wic/plugins/imager/direct.py
+++ b/scripts/lib/wic/plugins/imager/direct.py
@@ -323,7 +323,7 @@ class PartitionedImage():
                 if self.ptable_format == 'gpt':
                     part.uuid = str(uuid.uuid4())
                 else: # msdos partition table
-                    part.uuid = '%0x-%02d' % (self.identifier, part.realnum)
+                    part.uuid = '%08x-%02d' % (self.identifier, part.realnum)
 
     def prepare(self, imager):
         """Prepare an image. Call prepare method of all image partitions."""

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