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-rw-r--r--src/Propellor/Property/Parted/Types.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/Propellor/Property/Parted/Types.hs b/src/Propellor/Property/Parted/Types.hs
index 6b6b42e2..e5c62739 100644
--- a/src/Propellor/Property/Parted/Types.hs
+++ b/src/Propellor/Property/Parted/Types.hs
@@ -88,6 +88,8 @@ instance Monoid PartSize where
reducePartSize :: PartSize -> PartSize -> PartSize
reducePartSize (MegaBytes a) (MegaBytes b) = MegaBytes (a - b)
+reducePartSize (Bytes a) b = Bytes (a - fromPartSize b)
+reducePartSize a (Bytes b) = Bytes (fromPartSize a - b)
-- | Partitions need to be aligned for optimal efficiency.
-- The alignment is a number of bytes.