2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
22 #include <uuid/uuid.h>
23 #include "kerncompat.h"
24 #include "radix-tree.h"
27 #include "print-tree.h"
28 #include "transaction.h"
31 static int print_usage(void)
33 fprintf(stderr, "usage: btrfs-debug-tree [ -e ] [ -d ] [ -r ] [ -R ]\n");
34 fprintf(stderr, " [-b block_num ] device\n");
35 fprintf(stderr, "\t-e : print detailed extents info\n");
36 fprintf(stderr, "\t-d : print info of btrfs device and root tree dirs"
38 fprintf(stderr, "\t-r : print info of roots only\n");
39 fprintf(stderr, "\t-R : print info of roots and root backups\n");
40 fprintf(stderr, "\t-b block_num : print info of the specified block"
42 fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
46 static void print_extents(struct btrfs_root *root, struct extent_buffer *eb)
55 if (btrfs_is_leaf(eb)) {
56 btrfs_print_leaf(root, eb);
60 size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
61 nr = btrfs_header_nritems(eb);
62 for (i = 0; i < nr; i++) {
63 struct extent_buffer *next = read_tree_block(root,
64 btrfs_node_blockptr(eb, i),
66 btrfs_node_ptr_generation(eb, i));
67 if (btrfs_is_leaf(next) &&
68 btrfs_header_level(eb) != 1)
70 if (btrfs_header_level(next) !=
71 btrfs_header_level(eb) - 1)
73 print_extents(root, next);
74 free_extent_buffer(next);
78 static void print_old_roots(struct btrfs_super_block *super)
80 struct btrfs_root_backup *backup;
83 for (i = 0; i < BTRFS_NUM_BACKUP_ROOTS; i++) {
84 backup = super->super_roots + i;
85 printf("btrfs root backup slot %d\n", i);
86 printf("\ttree root gen %llu block %llu\n",
87 (unsigned long long)btrfs_backup_tree_root_gen(backup),
88 (unsigned long long)btrfs_backup_tree_root(backup));
90 printf("\t\textent root gen %llu block %llu\n",
91 (unsigned long long)btrfs_backup_extent_root_gen(backup),
92 (unsigned long long)btrfs_backup_extent_root(backup));
94 printf("\t\tchunk root gen %llu block %llu\n",
95 (unsigned long long)btrfs_backup_chunk_root_gen(backup),
96 (unsigned long long)btrfs_backup_chunk_root(backup));
98 printf("\t\tdevice root gen %llu block %llu\n",
99 (unsigned long long)btrfs_backup_dev_root_gen(backup),
100 (unsigned long long)btrfs_backup_dev_root(backup));
102 printf("\t\tcsum root gen %llu block %llu\n",
103 (unsigned long long)btrfs_backup_csum_root_gen(backup),
104 (unsigned long long)btrfs_backup_csum_root(backup));
106 printf("\t\tfs root gen %llu block %llu\n",
107 (unsigned long long)btrfs_backup_fs_root_gen(backup),
108 (unsigned long long)btrfs_backup_fs_root(backup));
110 printf("\t\t%llu used %llu total %llu devices\n",
111 (unsigned long long)btrfs_backup_bytes_used(backup),
112 (unsigned long long)btrfs_backup_total_bytes(backup),
113 (unsigned long long)btrfs_backup_num_devices(backup));
117 int main(int ac, char **av)
119 struct btrfs_root *root;
120 struct btrfs_fs_info *info;
121 struct btrfs_path path;
122 struct btrfs_key key;
123 struct btrfs_root_item ri;
124 struct extent_buffer *leaf;
125 struct btrfs_disk_key disk_key;
126 struct btrfs_key found_key;
133 int root_backups = 0;
135 struct btrfs_root *tree_root_scan;
141 c = getopt(ac, av, "deb:rR");
159 block_only = atoll(optarg);
169 info = open_ctree_fs_info(av[optind], 0, 0, 0, 1);
171 fprintf(stderr, "unable to open %s\n", av[optind]);
174 root = info->fs_root;
178 fprintf(stderr, "unable to open %s\n", av[optind]);
181 leaf = read_tree_block(root,
185 if (leaf && btrfs_header_level(leaf) != 0) {
186 free_extent_buffer(leaf);
191 leaf = read_tree_block(root,
196 fprintf(stderr, "failed to read %llu\n",
197 (unsigned long long)block_only);
200 btrfs_print_tree(root, leaf, 0);
206 printf("root tree: %llu level %d\n",
207 (unsigned long long)info->tree_root->node->start,
208 btrfs_header_level(info->tree_root->node));
209 printf("chunk tree: %llu level %d\n",
210 (unsigned long long)info->chunk_root->node->start,
211 btrfs_header_level(info->chunk_root->node));
213 if (info->tree_root->node) {
214 printf("root tree\n");
215 btrfs_print_tree(info->tree_root,
216 info->tree_root->node, 1);
219 if (info->chunk_root->node) {
220 printf("chunk tree\n");
221 btrfs_print_tree(info->chunk_root,
222 info->chunk_root->node, 1);
226 tree_root_scan = info->tree_root;
228 btrfs_init_path(&path);
230 if (!extent_buffer_uptodate(tree_root_scan->node))
235 btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
236 ret = btrfs_search_slot(NULL, tree_root_scan, &key, &path, 0, 0);
239 leaf = path.nodes[0];
240 slot = path.slots[0];
241 if (slot >= btrfs_header_nritems(leaf)) {
242 ret = btrfs_next_leaf(tree_root_scan, &path);
245 leaf = path.nodes[0];
246 slot = path.slots[0];
248 btrfs_item_key(leaf, &disk_key, path.slots[0]);
249 btrfs_disk_key_to_cpu(&found_key, &disk_key);
250 if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) {
251 unsigned long offset;
252 struct extent_buffer *buf;
253 int skip = extent_only | device_only;
255 offset = btrfs_item_ptr_offset(leaf, slot);
256 read_extent_buffer(leaf, &ri, offset, sizeof(ri));
257 buf = read_tree_block(tree_root_scan,
258 btrfs_root_bytenr(&ri),
259 btrfs_level_size(tree_root_scan,
260 btrfs_root_level(&ri)),
262 if (!extent_buffer_uptodate(buf))
265 switch(found_key.objectid) {
266 case BTRFS_ROOT_TREE_OBJECTID:
270 case BTRFS_EXTENT_TREE_OBJECTID:
273 if (!extent_only && !device_only)
276 case BTRFS_CHUNK_TREE_OBJECTID:
281 case BTRFS_DEV_TREE_OBJECTID:
285 case BTRFS_FS_TREE_OBJECTID:
290 case BTRFS_ROOT_TREE_DIR_OBJECTID:
294 case BTRFS_CSUM_TREE_OBJECTID:
299 case BTRFS_ORPHAN_OBJECTID:
304 case BTRFS_TREE_LOG_OBJECTID:
309 case BTRFS_TREE_LOG_FIXUP_OBJECTID:
314 case BTRFS_TREE_RELOC_OBJECTID:
319 case BTRFS_DATA_RELOC_TREE_OBJECTID:
321 printf("data reloc");
324 case BTRFS_EXTENT_CSUM_OBJECTID:
326 printf("extent checksum");
329 case BTRFS_QUOTA_TREE_OBJECTID:
334 case BTRFS_MULTIPLE_OBJECTIDS:
344 if (extent_only && !skip) {
345 print_extents(tree_root_scan, buf);
348 btrfs_print_key(&disk_key);
350 printf(" %llu level %d\n",
351 (unsigned long long)buf->start,
352 btrfs_header_level(buf));
355 btrfs_print_tree(tree_root_scan, buf, 1);
363 btrfs_release_path(root, &path);
365 if (tree_root_scan == info->tree_root &&
366 info->log_root_tree) {
367 tree_root_scan = info->log_root_tree;
371 if (extent_only || device_only)
375 print_old_roots(info->super_copy);
377 printf("total bytes %llu\n",
378 (unsigned long long)btrfs_super_total_bytes(info->super_copy));
379 printf("bytes used %llu\n",
380 (unsigned long long)btrfs_super_bytes_used(info->super_copy));
382 uuid_unparse(info->super_copy->fsid, uuidbuf);
383 printf("uuid %s\n", uuidbuf);
384 printf("%s\n", BTRFS_BUILD_VERSION);