[PATCH] Create a min_max constraint to avoid alignments issues.

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---
 storage/partitioning.py |   15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/storage/partitioning.py b/storage/partitioning.py
index eba0cb7..9e332ec 100644
--- a/storage/partitioning.py
+++ b/storage/partitioning.py
@@ -755,17 +755,26 @@ def allocatePartitions(disks, partitions):
 
         # create minimum geometry for this request
         # req_size is in MB
-        sectors_per_track = disk.device.biosGeometry[2]
         length = (_part.req_size * (1024 * 1024)) / sectorSize
         new_geom = parted.Geometry(device=disk.device,
-                                   start=max(sectors_per_track, free.start),
+                                   start=free.start,
                                    length=length)
 
+        # create maximum and minimum geometries for constraint
+        start = max(0 , free.start - 1),
+        max_geom = parted.Geometry(device=disk.device,
+                                   start=start,
+                                   length=min(length + 1, disk.device.length - start))
+        min_geom = parted.Geometry(device=disk.device,
+                                   start=free.start + 1,
+                                   length=length-1)
+
+
         # create the partition and add it to the disk
         partition = parted.Partition(disk=disk,
                                      type=part_type,
                                      geometry=new_geom)
-        constraint = parted.Constraint(exactGeom=new_geom)
+        constraint = parted.Constraint(maxGeom=max_geom, minGeom=min_geom)
         disk.addPartition(partition=partition,
                           constraint=constraint)
         log.debug("created partition %s of %dMB and added it to %s" %
-- 
1.6.0.6

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