@@ -80,7 +80,10 @@ in the description of a field.
tables to repair refcounts before accessing the
- Bits 1-63: Reserved (set to 0)
+ Bit 1: Deduplication bit. If this bit is set then
+ deduplication is used on this image.
+ Bits 2-63: Reserved (set to 0)
80 - 87: compatible_features
Bitmask of compatible features. An implementation can
@@ -116,6 +119,7 @@ be stored. Each extension has a structure like the following:
0x00000000 - End of the header extension area
0xE2792ACA - Backing file format name
0x6803f857 - Feature name table
+ 0xCD8E819B - Deduplication table offset and length
other - Unknown header extension, can be safely