btrfs-progs: dump-tree: Also output log root tree

In btrfs-dump-tree, we output any existing log tree, however we don't
output the log root tree, which records all root items for log trees.

This makes it confusing for any one who want to know where the log tree
comes from.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/cmds-inspect-dump-tree.c b/cmds-inspect-dump-tree.c
index 2c6bec7..5a5ca53 100644 (file)
--- a/cmds-inspect-dump-tree.c
+++ b/cmds-inspect-dump-tree.c
@@ -344,6 +344,11 @@ int cmd_inspect_dump_tree(int argc, char **argv)
                        printf("chunk tree: %llu level %d\n",
                             (unsigned long long)info->chunk_root->node->start,
                             btrfs_header_level(info->chunk_root->node));
+                       if (info->log_root_tree)
+                               printf("log root tree: %llu level %d\n",
+                                      info->log_root_tree->node->start,
+                                       btrfs_header_level(
+                                               info->log_root_tree->node));
                } else {
                        if (info->tree_root->node) {
                                printf("root tree\n");
@@ -356,6 +361,12 @@ int cmd_inspect_dump_tree(int argc, char **argv)
                                btrfs_print_tree(info->chunk_root,
                                                 info->chunk_root->node, 1);
                        }
+
+                       if (info->log_root_tree) {
+                               printf("log root tree\n");
+                               btrfs_print_tree(info->log_root_tree,
+                                               info->log_root_tree->node, 1);
+                       }
                }
        }
        tree_root_scan = info->tree_root;
@@ -388,6 +399,17 @@ again:
                goto close_root;
        }
 
+       if (tree_id && tree_id == BTRFS_TREE_LOG_OBJECTID) {
+               if (!info->log_root_tree) {
+                       error("cannot print log root tree, invalid pointer");
+                       goto close_root;
+               }
+               printf("log root tree\n");
+               btrfs_print_tree(info->log_root_tree, info->log_root_tree->node,
+                                1);
+               goto close_root;
+       }
+
        key.offset = 0;
        key.objectid = 0;
        key.type = BTRFS_ROOT_ITEM_KEY;