[PATCH 4/6] Fix estimate of LUKS header size for newly encrypted devices. (#493575)

[David Lehman <dlehman@xxxxxxxxxx>]

---
 storage/devices.py |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/storage/devices.py b/storage/devices.py
index 49ad902..89595d7 100644
--- a/storage/devices.py
+++ b/storage/devices.py
@@ -1426,10 +1426,11 @@ class LUKSDevice(DMCryptDevice):
 
     @property
     def size(self):
-        size = super(LUKSDevice, self).size
-        if not size:
-            # break off 2KB for the LUKS header
-            size = float(self.slave.size) - (2.0 / 1024)
+        if not self.exists or not self.partedDevice:
+            # the LUKS header takes up 4040 512-byte sectors w/ a 512-bit key
+            size = float(self.slave.size) - ((4040 * 2.0) / 1024)
+        else:
+            size = self.partedDevice.getSize()
         return size
 
     def create(self, intf=None):
-- 
1.6.0.6

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