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Diffstat (limited to 'lib/btrfs/btrfsitem/item_devextent.go')
-rw-r--r--lib/btrfs/btrfsitem/item_devextent.go6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/btrfs/btrfsitem/item_devextent.go b/lib/btrfs/btrfsitem/item_devextent.go
index 8f5f05c..47bdbcf 100644
--- a/lib/btrfs/btrfsitem/item_devextent.go
+++ b/lib/btrfs/btrfsitem/item_devextent.go
@@ -13,9 +13,9 @@ import (
// key.objectid = device_id
// key.offset = physical_addr
type DevExtent struct { // DEV_EXTENT=204
- ChunkTree int64 `bin:"off=0, siz=8"`
- ChunkObjectID btrfsprim.ObjID `bin:"off=8, siz=8"`
- ChunkOffset btrfsvol.LogicalAddr `bin:"off=16, siz=8"`
+ ChunkTree btrfsprim.ObjID `bin:"off=0, siz=8"` // always CHUNK_TREE_OBJECTID
+ ChunkObjectID btrfsprim.ObjID `bin:"off=8, siz=8"` // which chunk within .ChunkTree owns this extent, always FIRST_CHUNK_TREE_OBJECTID
+ ChunkOffset btrfsvol.LogicalAddr `bin:"off=16, siz=8"` // offset of the CHUNK_ITEM that owns this extent, within the .ChunkObjectID
Length btrfsvol.AddrDelta `bin:"off=24, siz=8"`
ChunkTreeUUID btrfsprim.UUID `bin:"off=32, siz=16"`
binstruct.End `bin:"off=48"`