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| author | Luke Shumaker <lukeshu@lukeshu.com> | 2022-12-20 20:06:15 -0700 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@lukeshu.com> | 2022-12-20 20:06:15 -0700 |
| commit | 8ff81c1ed6a50179166ffc4cfb60bef85394265e (patch) | |
| tree | f2395593d4d4cfd12b26ba2030bb94930fe4ba56 /lib/btrfs/btrfsitem/item_extentdataref.go | |
| parent | 7315c38414b3a6840d71f254b7c8192640b41d7c (diff) | |
| parent | 94a86a763157327ac969c98e19d7770db477a6a3 (diff) | |
Merge branch 'lukeshu/rebuild-nodes-take2'
Diffstat (limited to 'lib/btrfs/btrfsitem/item_extentdataref.go')
| -rw-r--r-- | lib/btrfs/btrfsitem/item_extentdataref.go | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/lib/btrfs/btrfsitem/item_extentdataref.go b/lib/btrfs/btrfsitem/item_extentdataref.go index 74ce799..8c856e2 100644 --- a/lib/btrfs/btrfsitem/item_extentdataref.go +++ b/lib/btrfs/btrfsitem/item_extentdataref.go @@ -9,10 +9,12 @@ import ( "git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsprim" ) +// key.objectid = laddr of the extent being referenced +// key.offset = crc32c([root,objectid,offset]) type ExtentDataRef struct { // EXTENT_DATA_REF=178 - Root btrfsprim.ObjID `bin:"off=0, siz=8"` - ObjectID btrfsprim.ObjID `bin:"off=8, siz=8"` - Offset int64 `bin:"off=16, siz=8"` - Count int32 `bin:"off=24, siz=4"` + Root btrfsprim.ObjID `bin:"off=0, siz=8"` // subvolume tree ID that references this extent + ObjectID btrfsprim.ObjID `bin:"off=8, siz=8"` // inode number that references this extent within the .Root subvolume + Offset int64 `bin:"off=16, siz=8"` // byte offset for the extent within the file + Count int32 `bin:"off=24, siz=4"` // reference count binstruct.End `bin:"off=28"` } |