Commit Fixes: 8c36786c8198 ("btrfs-progs: print-tree: Print offset as tree objectid for ROOT_ITEM")
changes how we translate offset of ROOT_ITEM.
However the fact is, even for ROOT_ITEM, we have different meaning of
offset.
For tree reloc tree, it's indeed subvolume id.
But for other trees, it's the transid of when it's created.
Fix it.
Reported-by: Nikolay Borisov <nborisov@xxxxxxxx>
Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
print-tree.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/print-tree.c b/print-tree.c
index 45350fea0963..848e296c4e67 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -834,7 +834,16 @@ void btrfs_print_key(struct btrfs_disk_key *disk_key)
*/
case BTRFS_ROOT_ITEM_KEY:
printf(" ");
- print_objectid(stdout, offset, type);
+ /*
+ * Normally offset of ROOT_ITEM should presents the generation
+ * when this root is created.
+ * However if this is tree reloc tree, offset is the subvolume
+ * id of its source. Here we do extra check on this.
+ */
+ if (objectid == BTRFS_TREE_RELOC_OBJECTID)
+ print_objectid(stdout, offset, type);
+ else
+ printf("%lld", offset);
printf(")");
break;
default:
--
2.16.2
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