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] [-u]\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-u : print info of uuid tree only\n");
41 fprintf(stderr, "\t-b block_num : print info of the specified block"
43 fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
47 static void print_extents(struct btrfs_root *root, struct extent_buffer *eb)
56 if (btrfs_is_leaf(eb)) {
57 btrfs_print_leaf(root, eb);
61 size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
62 nr = btrfs_header_nritems(eb);
63 for (i = 0; i < nr; i++) {
64 struct extent_buffer *next = read_tree_block(root,
65 btrfs_node_blockptr(eb, i),
67 btrfs_node_ptr_generation(eb, i));
68 if (btrfs_is_leaf(next) &&
69 btrfs_header_level(eb) != 1)
71 if (btrfs_header_level(next) !=
72 btrfs_header_level(eb) - 1)
74 print_extents(root, next);
75 free_extent_buffer(next);
79 static void print_old_roots(struct btrfs_super_block *super)
81 struct btrfs_root_backup *backup;
84 for (i = 0; i < BTRFS_NUM_BACKUP_ROOTS; i++) {
85 backup = super->super_roots + i;
86 printf("btrfs root backup slot %d\n", i);
87 printf("\ttree root gen %llu block %llu\n",
88 (unsigned long long)btrfs_backup_tree_root_gen(backup),
89 (unsigned long long)btrfs_backup_tree_root(backup));
91 printf("\t\textent root gen %llu block %llu\n",
92 (unsigned long long)btrfs_backup_extent_root_gen(backup),
93 (unsigned long long)btrfs_backup_extent_root(backup));
95 printf("\t\tchunk root gen %llu block %llu\n",
96 (unsigned long long)btrfs_backup_chunk_root_gen(backup),
97 (unsigned long long)btrfs_backup_chunk_root(backup));
99 printf("\t\tdevice root gen %llu block %llu\n",
100 (unsigned long long)btrfs_backup_dev_root_gen(backup),
101 (unsigned long long)btrfs_backup_dev_root(backup));
103 printf("\t\tcsum root gen %llu block %llu\n",
104 (unsigned long long)btrfs_backup_csum_root_gen(backup),
105 (unsigned long long)btrfs_backup_csum_root(backup));
107 printf("\t\tfs root gen %llu block %llu\n",
108 (unsigned long long)btrfs_backup_fs_root_gen(backup),
109 (unsigned long long)btrfs_backup_fs_root(backup));
111 printf("\t\t%llu used %llu total %llu devices\n",
112 (unsigned long long)btrfs_backup_bytes_used(backup),
113 (unsigned long long)btrfs_backup_total_bytes(backup),
114 (unsigned long long)btrfs_backup_num_devices(backup));
118 int main(int ac, char **av)
120 struct btrfs_root *root;
121 struct btrfs_fs_info *info;
122 struct btrfs_path path;
123 struct btrfs_key key;
124 struct btrfs_root_item ri;
125 struct extent_buffer *leaf;
126 struct btrfs_disk_key disk_key;
127 struct btrfs_key found_key;
133 int uuid_tree_only = 0;
135 int root_backups = 0;
137 struct btrfs_root *tree_root_scan;
143 c = getopt(ac, av, "deb:rRu");
164 block_only = atoll(optarg);
174 info = open_ctree_fs_info(av[optind], 0, 0, OPEN_CTREE_PARTIAL);
176 fprintf(stderr, "unable to open %s\n", av[optind]);
179 root = info->fs_root;
183 fprintf(stderr, "unable to open %s\n", av[optind]);
186 leaf = read_tree_block(root,
190 if (leaf && btrfs_header_level(leaf) != 0) {
191 free_extent_buffer(leaf);
196 leaf = read_tree_block(root,
201 fprintf(stderr, "failed to read %llu\n",
202 (unsigned long long)block_only);
205 btrfs_print_tree(root, leaf, 0);
209 if (!(extent_only || uuid_tree_only)) {
211 printf("root tree: %llu level %d\n",
212 (unsigned long long)info->tree_root->node->start,
213 btrfs_header_level(info->tree_root->node));
214 printf("chunk tree: %llu level %d\n",
215 (unsigned long long)info->chunk_root->node->start,
216 btrfs_header_level(info->chunk_root->node));
218 if (info->tree_root->node) {
219 printf("root tree\n");
220 btrfs_print_tree(info->tree_root,
221 info->tree_root->node, 1);
224 if (info->chunk_root->node) {
225 printf("chunk tree\n");
226 btrfs_print_tree(info->chunk_root,
227 info->chunk_root->node, 1);
231 tree_root_scan = info->tree_root;
233 btrfs_init_path(&path);
235 if (!extent_buffer_uptodate(tree_root_scan->node))
240 btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
241 ret = btrfs_search_slot(NULL, tree_root_scan, &key, &path, 0, 0);
244 leaf = path.nodes[0];
245 slot = path.slots[0];
246 if (slot >= btrfs_header_nritems(leaf)) {
247 ret = btrfs_next_leaf(tree_root_scan, &path);
250 leaf = path.nodes[0];
251 slot = path.slots[0];
253 btrfs_item_key(leaf, &disk_key, path.slots[0]);
254 btrfs_disk_key_to_cpu(&found_key, &disk_key);
255 if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) {
256 unsigned long offset;
257 struct extent_buffer *buf;
258 int skip = extent_only | device_only | uuid_tree_only;
260 offset = btrfs_item_ptr_offset(leaf, slot);
261 read_extent_buffer(leaf, &ri, offset, sizeof(ri));
262 buf = read_tree_block(tree_root_scan,
263 btrfs_root_bytenr(&ri),
264 btrfs_level_size(tree_root_scan,
265 btrfs_root_level(&ri)),
267 if (!extent_buffer_uptodate(buf))
270 switch(found_key.objectid) {
271 case BTRFS_ROOT_TREE_OBJECTID:
275 case BTRFS_EXTENT_TREE_OBJECTID:
276 if (!device_only && !uuid_tree_only)
281 case BTRFS_CHUNK_TREE_OBJECTID:
286 case BTRFS_DEV_TREE_OBJECTID:
292 case BTRFS_FS_TREE_OBJECTID:
297 case BTRFS_ROOT_TREE_DIR_OBJECTID:
301 case BTRFS_CSUM_TREE_OBJECTID:
306 case BTRFS_ORPHAN_OBJECTID:
311 case BTRFS_TREE_LOG_OBJECTID:
316 case BTRFS_TREE_LOG_FIXUP_OBJECTID:
321 case BTRFS_TREE_RELOC_OBJECTID:
326 case BTRFS_DATA_RELOC_TREE_OBJECTID:
328 printf("data reloc");
331 case BTRFS_EXTENT_CSUM_OBJECTID:
333 printf("extent checksum");
336 case BTRFS_QUOTA_TREE_OBJECTID:
341 case BTRFS_UUID_TREE_OBJECTID:
342 if (!extent_only && !device_only)
347 case BTRFS_MULTIPLE_OBJECTIDS:
357 if (extent_only && !skip) {
358 print_extents(tree_root_scan, buf);
361 btrfs_print_key(&disk_key);
363 printf(" %llu level %d\n",
364 (unsigned long long)buf->start,
365 btrfs_header_level(buf));
368 btrfs_print_tree(tree_root_scan, buf, 1);
371 free_extent_buffer(buf);
377 btrfs_release_path(&path);
379 if (tree_root_scan == info->tree_root &&
380 info->log_root_tree) {
381 tree_root_scan = info->log_root_tree;
385 if (extent_only || device_only || uuid_tree_only)
389 print_old_roots(info->super_copy);
391 printf("total bytes %llu\n",
392 (unsigned long long)btrfs_super_total_bytes(info->super_copy));
393 printf("bytes used %llu\n",
394 (unsigned long long)btrfs_super_bytes_used(info->super_copy));
396 uuid_unparse(info->super_copy->fsid, uuidbuf);
397 printf("uuid %s\n", uuidbuf);
398 printf("%s\n", BTRFS_BUILD_VERSION);
400 return close_ctree(root);