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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | */ | |
18 | ||
5de08d7d CM |
19 | #include "ctree.h" |
20 | #include "disk-io.h" | |
35b7e476 | 21 | #include "print-tree.h" |
5de08d7d | 22 | |
0b86a832 CM |
23 | static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk) |
24 | { | |
25 | int num_stripes = btrfs_chunk_num_stripes(eb, chunk); | |
26 | int i; | |
d397712b CM |
27 | printk(KERN_INFO "\t\tchunk length %llu owner %llu type %llu " |
28 | "num_stripes %d\n", | |
c1c9ff7c GU |
29 | btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk), |
30 | btrfs_chunk_type(eb, chunk), num_stripes); | |
0b86a832 | 31 | for (i = 0 ; i < num_stripes ; i++) { |
d397712b | 32 | printk(KERN_INFO "\t\t\tstripe %d devid %llu offset %llu\n", i, |
c1c9ff7c GU |
33 | btrfs_stripe_devid_nr(eb, chunk, i), |
34 | btrfs_stripe_offset_nr(eb, chunk, i)); | |
0b86a832 CM |
35 | } |
36 | } | |
37 | static void print_dev_item(struct extent_buffer *eb, | |
38 | struct btrfs_dev_item *dev_item) | |
39 | { | |
d397712b CM |
40 | printk(KERN_INFO "\t\tdev item devid %llu " |
41 | "total_bytes %llu bytes used %llu\n", | |
c1c9ff7c GU |
42 | btrfs_device_id(eb, dev_item), |
43 | btrfs_device_total_bytes(eb, dev_item), | |
44 | btrfs_device_bytes_used(eb, dev_item)); | |
0b86a832 | 45 | } |
5d4f98a2 YZ |
46 | static void print_extent_data_ref(struct extent_buffer *eb, |
47 | struct btrfs_extent_data_ref *ref) | |
48 | { | |
49 | printk(KERN_INFO "\t\textent data backref root %llu " | |
50 | "objectid %llu offset %llu count %u\n", | |
c1c9ff7c GU |
51 | btrfs_extent_data_ref_root(eb, ref), |
52 | btrfs_extent_data_ref_objectid(eb, ref), | |
53 | btrfs_extent_data_ref_offset(eb, ref), | |
5d4f98a2 YZ |
54 | btrfs_extent_data_ref_count(eb, ref)); |
55 | } | |
56 | ||
be2c765d | 57 | static void print_extent_item(struct extent_buffer *eb, int slot, int type) |
5d4f98a2 YZ |
58 | { |
59 | struct btrfs_extent_item *ei; | |
60 | struct btrfs_extent_inline_ref *iref; | |
61 | struct btrfs_extent_data_ref *dref; | |
62 | struct btrfs_shared_data_ref *sref; | |
63 | struct btrfs_disk_key key; | |
64 | unsigned long end; | |
65 | unsigned long ptr; | |
5d4f98a2 YZ |
66 | u32 item_size = btrfs_item_size_nr(eb, slot); |
67 | u64 flags; | |
68 | u64 offset; | |
69 | ||
70 | if (item_size < sizeof(*ei)) { | |
71 | #ifdef BTRFS_COMPAT_EXTENT_TREE_V0 | |
72 | struct btrfs_extent_item_v0 *ei0; | |
73 | BUG_ON(item_size != sizeof(*ei0)); | |
74 | ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0); | |
75 | printk(KERN_INFO "\t\textent refs %u\n", | |
76 | btrfs_extent_refs_v0(eb, ei0)); | |
77 | return; | |
78 | #else | |
79 | BUG(); | |
80 | #endif | |
81 | } | |
82 | ||
83 | ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item); | |
84 | flags = btrfs_extent_flags(eb, ei); | |
85 | ||
86 | printk(KERN_INFO "\t\textent refs %llu gen %llu flags %llu\n", | |
c1c9ff7c GU |
87 | btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei), |
88 | flags); | |
5d4f98a2 | 89 | |
be2c765d JB |
90 | if ((type == BTRFS_EXTENT_ITEM_KEY) && |
91 | flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { | |
5d4f98a2 YZ |
92 | struct btrfs_tree_block_info *info; |
93 | info = (struct btrfs_tree_block_info *)(ei + 1); | |
94 | btrfs_tree_block_key(eb, info, &key); | |
d4c34f6b | 95 | printk(KERN_INFO "\t\ttree block key (%llu %u %llu) " |
5d4f98a2 | 96 | "level %d\n", |
c1c9ff7c GU |
97 | btrfs_disk_key_objectid(&key), key.type, |
98 | btrfs_disk_key_offset(&key), | |
5d4f98a2 YZ |
99 | btrfs_tree_block_level(eb, info)); |
100 | iref = (struct btrfs_extent_inline_ref *)(info + 1); | |
101 | } else { | |
102 | iref = (struct btrfs_extent_inline_ref *)(ei + 1); | |
103 | } | |
104 | ||
105 | ptr = (unsigned long)iref; | |
106 | end = (unsigned long)ei + item_size; | |
107 | while (ptr < end) { | |
108 | iref = (struct btrfs_extent_inline_ref *)ptr; | |
109 | type = btrfs_extent_inline_ref_type(eb, iref); | |
110 | offset = btrfs_extent_inline_ref_offset(eb, iref); | |
111 | switch (type) { | |
112 | case BTRFS_TREE_BLOCK_REF_KEY: | |
113 | printk(KERN_INFO "\t\ttree block backref " | |
c1c9ff7c | 114 | "root %llu\n", offset); |
5d4f98a2 YZ |
115 | break; |
116 | case BTRFS_SHARED_BLOCK_REF_KEY: | |
117 | printk(KERN_INFO "\t\tshared block backref " | |
c1c9ff7c | 118 | "parent %llu\n", offset); |
5d4f98a2 YZ |
119 | break; |
120 | case BTRFS_EXTENT_DATA_REF_KEY: | |
121 | dref = (struct btrfs_extent_data_ref *)(&iref->offset); | |
122 | print_extent_data_ref(eb, dref); | |
123 | break; | |
124 | case BTRFS_SHARED_DATA_REF_KEY: | |
125 | sref = (struct btrfs_shared_data_ref *)(iref + 1); | |
126 | printk(KERN_INFO "\t\tshared data backref " | |
127 | "parent %llu count %u\n", | |
c1c9ff7c | 128 | offset, btrfs_shared_data_ref_count(eb, sref)); |
5d4f98a2 YZ |
129 | break; |
130 | default: | |
131 | BUG(); | |
132 | } | |
133 | ptr += btrfs_extent_inline_ref_size(type); | |
134 | } | |
135 | WARN_ON(ptr > end); | |
136 | } | |
137 | ||
138 | #ifdef BTRFS_COMPAT_EXTENT_TREE_V0 | |
139 | static void print_extent_ref_v0(struct extent_buffer *eb, int slot) | |
140 | { | |
141 | struct btrfs_extent_ref_v0 *ref0; | |
142 | ||
143 | ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0); | |
144 | printk("\t\textent back ref root %llu gen %llu " | |
145 | "owner %llu num_refs %lu\n", | |
c1c9ff7c GU |
146 | btrfs_ref_root_v0(eb, ref0), |
147 | btrfs_ref_generation_v0(eb, ref0), | |
148 | btrfs_ref_objectid_v0(eb, ref0), | |
5d4f98a2 YZ |
149 | (unsigned long)btrfs_ref_count_v0(eb, ref0)); |
150 | } | |
151 | #endif | |
152 | ||
8f8ae8e2 SB |
153 | static void print_uuid_item(struct extent_buffer *l, unsigned long offset, |
154 | u32 item_size) | |
155 | { | |
156 | if (!IS_ALIGNED(item_size, sizeof(u64))) { | |
efe120a0 | 157 | pr_warn("BTRFS: uuid item with illegal size %lu!\n", |
8f8ae8e2 SB |
158 | (unsigned long)item_size); |
159 | return; | |
160 | } | |
161 | while (item_size) { | |
162 | __le64 subvol_id; | |
163 | ||
164 | read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id)); | |
165 | printk(KERN_INFO "\t\tsubvol_id %llu\n", | |
166 | (unsigned long long)le64_to_cpu(subvol_id)); | |
167 | item_size -= sizeof(u64); | |
168 | offset += sizeof(u64); | |
169 | } | |
170 | } | |
171 | ||
5f39d397 | 172 | void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) |
5de08d7d CM |
173 | { |
174 | int i; | |
068132ba | 175 | u32 type, nr; |
0783fcfc | 176 | struct btrfs_item *item; |
3768f368 | 177 | struct btrfs_root_item *ri; |
1d4f6404 | 178 | struct btrfs_dir_item *di; |
293ffd5f | 179 | struct btrfs_inode_item *ii; |
9078a3e1 | 180 | struct btrfs_block_group_item *bi; |
8c2383c3 | 181 | struct btrfs_file_extent_item *fi; |
5d4f98a2 YZ |
182 | struct btrfs_extent_data_ref *dref; |
183 | struct btrfs_shared_data_ref *sref; | |
184 | struct btrfs_dev_extent *dev_extent; | |
5f39d397 CM |
185 | struct btrfs_key key; |
186 | struct btrfs_key found_key; | |
1d4f6404 | 187 | |
068132ba DB |
188 | if (!l) |
189 | return; | |
190 | ||
191 | nr = btrfs_header_nritems(l); | |
192 | ||
c2cf52eb | 193 | btrfs_info(root->fs_info, "leaf %llu total ptrs %d free space %d", |
c1c9ff7c | 194 | btrfs_header_bytenr(l), nr, btrfs_leaf_free_space(root, l)); |
5de08d7d | 195 | for (i = 0 ; i < nr ; i++) { |
dd3cc16b | 196 | item = btrfs_item_nr(i); |
5f39d397 | 197 | btrfs_item_key_to_cpu(l, &key, i); |
962a298f | 198 | type = key.type; |
d4c34f6b | 199 | printk(KERN_INFO "\titem %d key (%llu %u %llu) itemoff %d " |
d397712b | 200 | "itemsize %d\n", |
c1c9ff7c | 201 | i, key.objectid, type, key.offset, |
5f39d397 | 202 | btrfs_item_offset(l, item), btrfs_item_size(l, item)); |
62e2749e CM |
203 | switch (type) { |
204 | case BTRFS_INODE_ITEM_KEY: | |
293ffd5f | 205 | ii = btrfs_item_ptr(l, i, struct btrfs_inode_item); |
d397712b CM |
206 | printk(KERN_INFO "\t\tinode generation %llu size %llu " |
207 | "mode %o\n", | |
d397712b | 208 | btrfs_inode_generation(l, ii), |
c1c9ff7c | 209 | btrfs_inode_size(l, ii), |
5f39d397 | 210 | btrfs_inode_mode(l, ii)); |
62e2749e CM |
211 | break; |
212 | case BTRFS_DIR_ITEM_KEY: | |
1d4f6404 | 213 | di = btrfs_item_ptr(l, i, struct btrfs_dir_item); |
5f39d397 | 214 | btrfs_dir_item_key_to_cpu(l, di, &found_key); |
d397712b | 215 | printk(KERN_INFO "\t\tdir oid %llu type %u\n", |
c1c9ff7c | 216 | found_key.objectid, |
5f39d397 | 217 | btrfs_dir_type(l, di)); |
62e2749e CM |
218 | break; |
219 | case BTRFS_ROOT_ITEM_KEY: | |
220 | ri = btrfs_item_ptr(l, i, struct btrfs_root_item); | |
d397712b | 221 | printk(KERN_INFO "\t\troot data bytenr %llu refs %u\n", |
d397712b | 222 | btrfs_disk_root_bytenr(l, ri), |
5f39d397 | 223 | btrfs_disk_root_refs(l, ri)); |
62e2749e CM |
224 | break; |
225 | case BTRFS_EXTENT_ITEM_KEY: | |
be2c765d JB |
226 | case BTRFS_METADATA_ITEM_KEY: |
227 | print_extent_item(l, i, type); | |
62e2749e | 228 | break; |
5d4f98a2 YZ |
229 | case BTRFS_TREE_BLOCK_REF_KEY: |
230 | printk(KERN_INFO "\t\ttree block backref\n"); | |
231 | break; | |
232 | case BTRFS_SHARED_BLOCK_REF_KEY: | |
233 | printk(KERN_INFO "\t\tshared block backref\n"); | |
234 | break; | |
235 | case BTRFS_EXTENT_DATA_REF_KEY: | |
236 | dref = btrfs_item_ptr(l, i, | |
237 | struct btrfs_extent_data_ref); | |
238 | print_extent_data_ref(l, dref); | |
239 | break; | |
240 | case BTRFS_SHARED_DATA_REF_KEY: | |
241 | sref = btrfs_item_ptr(l, i, | |
242 | struct btrfs_shared_data_ref); | |
243 | printk(KERN_INFO "\t\tshared data backref count %u\n", | |
244 | btrfs_shared_data_ref_count(l, sref)); | |
7bb86316 | 245 | break; |
8c2383c3 CM |
246 | case BTRFS_EXTENT_DATA_KEY: |
247 | fi = btrfs_item_ptr(l, i, | |
248 | struct btrfs_file_extent_item); | |
5f39d397 | 249 | if (btrfs_file_extent_type(l, fi) == |
8c2383c3 | 250 | BTRFS_FILE_EXTENT_INLINE) { |
d397712b CM |
251 | printk(KERN_INFO "\t\tinline extent data " |
252 | "size %u\n", | |
514ac8ad | 253 | btrfs_file_extent_inline_len(l, i, fi)); |
8c2383c3 CM |
254 | break; |
255 | } | |
d397712b CM |
256 | printk(KERN_INFO "\t\textent data disk bytenr %llu " |
257 | "nr %llu\n", | |
d397712b | 258 | btrfs_file_extent_disk_bytenr(l, fi), |
d397712b CM |
259 | btrfs_file_extent_disk_num_bytes(l, fi)); |
260 | printk(KERN_INFO "\t\textent data offset %llu " | |
261 | "nr %llu ram %llu\n", | |
d397712b | 262 | btrfs_file_extent_offset(l, fi), |
d397712b | 263 | btrfs_file_extent_num_bytes(l, fi), |
d397712b | 264 | btrfs_file_extent_ram_bytes(l, fi)); |
8c2383c3 | 265 | break; |
5d4f98a2 YZ |
266 | case BTRFS_EXTENT_REF_V0_KEY: |
267 | #ifdef BTRFS_COMPAT_EXTENT_TREE_V0 | |
268 | print_extent_ref_v0(l, i); | |
269 | #else | |
270 | BUG(); | |
271 | #endif | |
333e8105 | 272 | break; |
9078a3e1 CM |
273 | case BTRFS_BLOCK_GROUP_ITEM_KEY: |
274 | bi = btrfs_item_ptr(l, i, | |
275 | struct btrfs_block_group_item); | |
d397712b | 276 | printk(KERN_INFO "\t\tblock group used %llu\n", |
d397712b | 277 | btrfs_disk_block_group_used(l, bi)); |
62e2749e | 278 | break; |
0b86a832 | 279 | case BTRFS_CHUNK_ITEM_KEY: |
d397712b CM |
280 | print_chunk(l, btrfs_item_ptr(l, i, |
281 | struct btrfs_chunk)); | |
0b86a832 CM |
282 | break; |
283 | case BTRFS_DEV_ITEM_KEY: | |
284 | print_dev_item(l, btrfs_item_ptr(l, i, | |
285 | struct btrfs_dev_item)); | |
286 | break; | |
287 | case BTRFS_DEV_EXTENT_KEY: | |
288 | dev_extent = btrfs_item_ptr(l, i, | |
289 | struct btrfs_dev_extent); | |
d397712b | 290 | printk(KERN_INFO "\t\tdev extent chunk_tree %llu\n" |
e17cade2 CM |
291 | "\t\tchunk objectid %llu chunk offset %llu " |
292 | "length %llu\n", | |
e17cade2 | 293 | btrfs_dev_extent_chunk_tree(l, dev_extent), |
e17cade2 | 294 | btrfs_dev_extent_chunk_objectid(l, dev_extent), |
e17cade2 | 295 | btrfs_dev_extent_chunk_offset(l, dev_extent), |
e17cade2 | 296 | btrfs_dev_extent_length(l, dev_extent)); |
0e636027 | 297 | break; |
733f4fbb SB |
298 | case BTRFS_DEV_STATS_KEY: |
299 | printk(KERN_INFO "\t\tdevice stats\n"); | |
300 | break; | |
a2bff640 SB |
301 | case BTRFS_DEV_REPLACE_KEY: |
302 | printk(KERN_INFO "\t\tdev replace\n"); | |
303 | break; | |
8f8ae8e2 SB |
304 | case BTRFS_UUID_KEY_SUBVOL: |
305 | case BTRFS_UUID_KEY_RECEIVED_SUBVOL: | |
306 | print_uuid_item(l, btrfs_item_ptr_offset(l, i), | |
307 | btrfs_item_size_nr(l, i)); | |
308 | break; | |
62e2749e | 309 | }; |
5de08d7d CM |
310 | } |
311 | } | |
e20d96d6 | 312 | |
5f39d397 | 313 | void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c) |
5de08d7d | 314 | { |
e17cade2 | 315 | int i; u32 nr; |
5f39d397 | 316 | struct btrfs_key key; |
db94535d | 317 | int level; |
5de08d7d | 318 | |
5f39d397 | 319 | if (!c) |
5de08d7d | 320 | return; |
5f39d397 | 321 | nr = btrfs_header_nritems(c); |
db94535d CM |
322 | level = btrfs_header_level(c); |
323 | if (level == 0) { | |
5f39d397 | 324 | btrfs_print_leaf(root, c); |
5de08d7d CM |
325 | return; |
326 | } | |
c2cf52eb | 327 | btrfs_info(root->fs_info, "node %llu level %d total ptrs %d free spc %u", |
c1c9ff7c GU |
328 | btrfs_header_bytenr(c), level, nr, |
329 | (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr); | |
5de08d7d | 330 | for (i = 0; i < nr; i++) { |
5f39d397 | 331 | btrfs_node_key_to_cpu(c, &key, i); |
d397712b | 332 | printk(KERN_INFO "\tkey %d (%llu %u %llu) block %llu\n", |
c1c9ff7c GU |
333 | i, key.objectid, key.type, key.offset, |
334 | btrfs_node_blockptr(c, i)); | |
5de08d7d CM |
335 | } |
336 | for (i = 0; i < nr; i++) { | |
5f39d397 | 337 | struct extent_buffer *next = read_tree_block(root, |
db94535d | 338 | btrfs_node_blockptr(c, i), |
ca7a79ad | 339 | btrfs_node_ptr_generation(c, i)); |
7518a238 | 340 | if (btrfs_is_leaf(next) && |
c271b492 | 341 | level != 1) |
5de08d7d | 342 | BUG(); |
5f39d397 | 343 | if (btrfs_header_level(next) != |
c271b492 | 344 | level - 1) |
5de08d7d | 345 | BUG(); |
5f39d397 CM |
346 | btrfs_print_tree(root, next); |
347 | free_extent_buffer(next); | |
5de08d7d | 348 | } |
5de08d7d | 349 | } |