From: Nikos Skalkotos <skalkoto@grnet.gr>
Date: Tue, 29 Jan 2013 16:33:05 +0000 (+0000)
Subject: In bundle_volume keep partition starting points
X-Git-Tag: v0.2.3~1
X-Git-Url: https://code.grnet.gr/git/snf-image-creator/commitdiff_plain/c631f3e4ecfa1640cd761774ade02cca57a906fc

In bundle_volume keep partition starting points

When shrinking partitions, make sure that the shrinked partitions
always starts from the sector the initial partition started. Changing
this may destroy the boot loader.
---

diff --git a/image_creator/bundle_volume.py b/image_creator/bundle_volume.py
index ff6ed3e..189e107 100644
--- a/image_creator/bundle_volume.py
+++ b/image_creator/bundle_volume.py
@@ -222,9 +222,13 @@ class BundleVolume(object):
             # Align to 2048
             part_end = ((part_end + 2047) // 2048) * 2048
 
+            # Make sure the partition starts where the old partition started.
+            constraint = parted.Constraint(device=image_disk.device)
+            constraint.startRange = parted.Geometry(device=image_disk.device,
+                                                    start=last.start, length=1)
+
             image_disk.setPartitionGeometry(
-                image_disk.getPartitionBySector(last.start),
-                parted.Constraint(device=image_disk.device),
+                image_disk.getPartitionBySector(last.start), constraint,
                 start=last.start, end=part_end)
             image_disk.commitToDevice()