Given a partition layout like this:
partition startsector endsector
/boot 2048 1026047
PV 1026048 xxxxxxxxxx
Then when we call getFreeRegions() parted gives us a free region with a
geometry starting at sector 63 and ending at sector 2047, which we then try to
align to our 2048 grain, which fails for the starting sector. When we fail to
align, this means that the free region is too small to create an aligned
partition in there, and we should just skip it.
---
storage/partitioning.py | 16 ++++++++++++++--
1 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/storage/partitioning.py b/storage/partitioning.py
index d548cdb..b9a5592 100644
--- a/storage/partitioning.py
+++ b/storage/partitioning.py
@@ -725,10 +725,22 @@ def getFreeRegions(disks):
for f in disk.format.partedDisk.getFreeSpaceRegions():
# device alignment fixups
if not disk.format.alignment.isAligned(f, f.start):
- f.start = disk.format.alignment.alignNearest(f, f.start)
+ try:
+ f.start = disk.format.alignment.alignNearest(f, f.start)
+ except ArithmeticError, e:
+ # This happens when the free region is too small to create
+ # an aligned partition in it, ie the freespace between the
+ # mbr and the first aligned partition
+ continue
if not disk.format.endAlignment.isAligned(f, f.end):
- f.end = disk.format.endAlignment.alignNearest(f, f.end)
+ try:
+ f.end = disk.format.endAlignment.alignNearest(f, f.end)
+ except ArithmeticError, e:
+ # This happens when the free region is too small to create
+ # an aligned partition in it, ie the freespace after the
+ # last aligned partition
+ continue
if f.length > 0:
free.append(f)
--
1.6.6
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