1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2013 Facebook. All rights reserved.
6 #include <linux/types.h>
7 #include "btrfs-tests.h"
9 #include "../transaction.h"
10 #include "../disk-io.h"
11 #include "../qgroup.h"
12 #include "../backref.h"
14 static int insert_normal_tree_ref(struct btrfs_root *root, u64 bytenr,
15 u64 num_bytes, u64 parent, u64 root_objectid)
17 struct btrfs_trans_handle trans;
18 struct btrfs_extent_item *item;
19 struct btrfs_extent_inline_ref *iref;
20 struct btrfs_tree_block_info *block_info;
21 struct btrfs_path *path;
22 struct extent_buffer *leaf;
24 u32 size = sizeof(*item) + sizeof(*iref) + sizeof(*block_info);
27 btrfs_init_dummy_trans(&trans, NULL);
29 ins.objectid = bytenr;
30 ins.type = BTRFS_EXTENT_ITEM_KEY;
31 ins.offset = num_bytes;
33 path = btrfs_alloc_path();
35 test_err("couldn't allocate path");
39 path->leave_spinning = 1;
40 ret = btrfs_insert_empty_item(&trans, root, path, &ins, size);
42 test_err("couldn't insert ref %d", ret);
43 btrfs_free_path(path);
47 leaf = path->nodes[0];
48 item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
49 btrfs_set_extent_refs(leaf, item, 1);
50 btrfs_set_extent_generation(leaf, item, 1);
51 btrfs_set_extent_flags(leaf, item, BTRFS_EXTENT_FLAG_TREE_BLOCK);
52 block_info = (struct btrfs_tree_block_info *)(item + 1);
53 btrfs_set_tree_block_level(leaf, block_info, 0);
54 iref = (struct btrfs_extent_inline_ref *)(block_info + 1);
56 btrfs_set_extent_inline_ref_type(leaf, iref,
57 BTRFS_SHARED_BLOCK_REF_KEY);
58 btrfs_set_extent_inline_ref_offset(leaf, iref, parent);
60 btrfs_set_extent_inline_ref_type(leaf, iref, BTRFS_TREE_BLOCK_REF_KEY);
61 btrfs_set_extent_inline_ref_offset(leaf, iref, root_objectid);
63 btrfs_free_path(path);
67 static int add_tree_ref(struct btrfs_root *root, u64 bytenr, u64 num_bytes,
68 u64 parent, u64 root_objectid)
70 struct btrfs_trans_handle trans;
71 struct btrfs_extent_item *item;
72 struct btrfs_path *path;
77 btrfs_init_dummy_trans(&trans, NULL);
79 key.objectid = bytenr;
80 key.type = BTRFS_EXTENT_ITEM_KEY;
81 key.offset = num_bytes;
83 path = btrfs_alloc_path();
85 test_err("couldn't allocate path");
89 path->leave_spinning = 1;
90 ret = btrfs_search_slot(&trans, root, &key, path, 0, 1);
92 test_err("couldn't find extent ref");
93 btrfs_free_path(path);
97 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
98 struct btrfs_extent_item);
99 refs = btrfs_extent_refs(path->nodes[0], item);
100 btrfs_set_extent_refs(path->nodes[0], item, refs + 1);
101 btrfs_release_path(path);
103 key.objectid = bytenr;
105 key.type = BTRFS_SHARED_BLOCK_REF_KEY;
108 key.type = BTRFS_TREE_BLOCK_REF_KEY;
109 key.offset = root_objectid;
112 ret = btrfs_insert_empty_item(&trans, root, path, &key, 0);
114 test_err("failed to insert backref");
115 btrfs_free_path(path);
119 static int remove_extent_item(struct btrfs_root *root, u64 bytenr,
122 struct btrfs_trans_handle trans;
123 struct btrfs_key key;
124 struct btrfs_path *path;
127 btrfs_init_dummy_trans(&trans, NULL);
129 key.objectid = bytenr;
130 key.type = BTRFS_EXTENT_ITEM_KEY;
131 key.offset = num_bytes;
133 path = btrfs_alloc_path();
135 test_err("couldn't allocate path");
138 path->leave_spinning = 1;
140 ret = btrfs_search_slot(&trans, root, &key, path, -1, 1);
142 test_err("didn't find our key %d", ret);
143 btrfs_free_path(path);
146 btrfs_del_item(&trans, root, path);
147 btrfs_free_path(path);
151 static int remove_extent_ref(struct btrfs_root *root, u64 bytenr,
152 u64 num_bytes, u64 parent, u64 root_objectid)
154 struct btrfs_trans_handle trans;
155 struct btrfs_extent_item *item;
156 struct btrfs_path *path;
157 struct btrfs_key key;
161 btrfs_init_dummy_trans(&trans, NULL);
163 key.objectid = bytenr;
164 key.type = BTRFS_EXTENT_ITEM_KEY;
165 key.offset = num_bytes;
167 path = btrfs_alloc_path();
169 test_err("couldn't allocate path");
173 path->leave_spinning = 1;
174 ret = btrfs_search_slot(&trans, root, &key, path, 0, 1);
176 test_err("couldn't find extent ref");
177 btrfs_free_path(path);
181 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
182 struct btrfs_extent_item);
183 refs = btrfs_extent_refs(path->nodes[0], item);
184 btrfs_set_extent_refs(path->nodes[0], item, refs - 1);
185 btrfs_release_path(path);
187 key.objectid = bytenr;
189 key.type = BTRFS_SHARED_BLOCK_REF_KEY;
192 key.type = BTRFS_TREE_BLOCK_REF_KEY;
193 key.offset = root_objectid;
196 ret = btrfs_search_slot(&trans, root, &key, path, -1, 1);
198 test_err("couldn't find backref %d", ret);
199 btrfs_free_path(path);
202 btrfs_del_item(&trans, root, path);
203 btrfs_free_path(path);
207 static int test_no_shared_qgroup(struct btrfs_root *root,
208 u32 sectorsize, u32 nodesize)
210 struct btrfs_trans_handle trans;
211 struct btrfs_fs_info *fs_info = root->fs_info;
212 struct ulist *old_roots = NULL;
213 struct ulist *new_roots = NULL;
216 btrfs_init_dummy_trans(&trans, fs_info);
218 test_msg("qgroup basic add");
219 ret = btrfs_create_qgroup(&trans, BTRFS_FS_TREE_OBJECTID);
221 test_err("couldn't create a qgroup %d", ret);
226 * Since the test trans doesn't have the complicated delayed refs,
227 * we can only call btrfs_qgroup_account_extent() directly to test
230 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &old_roots,
233 ulist_free(old_roots);
234 test_err("couldn't find old roots: %d", ret);
238 ret = insert_normal_tree_ref(root, nodesize, nodesize, 0,
239 BTRFS_FS_TREE_OBJECTID);
243 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &new_roots,
246 ulist_free(old_roots);
247 ulist_free(new_roots);
248 test_err("couldn't find old roots: %d", ret);
252 ret = btrfs_qgroup_account_extent(&trans, nodesize, nodesize, old_roots,
255 test_err("couldn't account space for a qgroup %d", ret);
259 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FS_TREE_OBJECTID,
260 nodesize, nodesize)) {
261 test_err("qgroup counts didn't match expected values");
267 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &old_roots,
270 ulist_free(old_roots);
271 test_err("couldn't find old roots: %d", ret);
275 ret = remove_extent_item(root, nodesize, nodesize);
279 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &new_roots,
282 ulist_free(old_roots);
283 ulist_free(new_roots);
284 test_err("couldn't find old roots: %d", ret);
288 ret = btrfs_qgroup_account_extent(&trans, nodesize, nodesize, old_roots,
291 test_err("couldn't account space for a qgroup %d", ret);
295 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FS_TREE_OBJECTID, 0, 0)) {
296 test_err("qgroup counts didn't match expected values");
304 * Add a ref for two different roots to make sure the shared value comes out
305 * right, also remove one of the roots and make sure the exclusive count is
308 static int test_multiple_refs(struct btrfs_root *root,
309 u32 sectorsize, u32 nodesize)
311 struct btrfs_trans_handle trans;
312 struct btrfs_fs_info *fs_info = root->fs_info;
313 struct ulist *old_roots = NULL;
314 struct ulist *new_roots = NULL;
317 btrfs_init_dummy_trans(&trans, fs_info);
319 test_msg("qgroup multiple refs test");
322 * We have BTRFS_FS_TREE_OBJECTID created already from the
325 ret = btrfs_create_qgroup(&trans, BTRFS_FIRST_FREE_OBJECTID);
327 test_err("couldn't create a qgroup %d", ret);
331 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &old_roots,
334 ulist_free(old_roots);
335 test_err("couldn't find old roots: %d", ret);
339 ret = insert_normal_tree_ref(root, nodesize, nodesize, 0,
340 BTRFS_FS_TREE_OBJECTID);
344 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &new_roots,
347 ulist_free(old_roots);
348 ulist_free(new_roots);
349 test_err("couldn't find old roots: %d", ret);
353 ret = btrfs_qgroup_account_extent(&trans, nodesize, nodesize, old_roots,
356 test_err("couldn't account space for a qgroup %d", ret);
360 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FS_TREE_OBJECTID,
361 nodesize, nodesize)) {
362 test_err("qgroup counts didn't match expected values");
366 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &old_roots,
369 ulist_free(old_roots);
370 test_err("couldn't find old roots: %d", ret);
374 ret = add_tree_ref(root, nodesize, nodesize, 0,
375 BTRFS_FIRST_FREE_OBJECTID);
379 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &new_roots,
382 ulist_free(old_roots);
383 ulist_free(new_roots);
384 test_err("couldn't find old roots: %d", ret);
388 ret = btrfs_qgroup_account_extent(&trans, nodesize, nodesize, old_roots,
391 test_err("couldn't account space for a qgroup %d", ret);
395 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FS_TREE_OBJECTID,
397 test_err("qgroup counts didn't match expected values");
401 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FIRST_FREE_OBJECTID,
403 test_err("qgroup counts didn't match expected values");
407 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &old_roots,
410 ulist_free(old_roots);
411 test_err("couldn't find old roots: %d", ret);
415 ret = remove_extent_ref(root, nodesize, nodesize, 0,
416 BTRFS_FIRST_FREE_OBJECTID);
420 ret = btrfs_find_all_roots(&trans, fs_info, nodesize, 0, &new_roots,
423 ulist_free(old_roots);
424 ulist_free(new_roots);
425 test_err("couldn't find old roots: %d", ret);
429 ret = btrfs_qgroup_account_extent(&trans, nodesize, nodesize, old_roots,
432 test_err("couldn't account space for a qgroup %d", ret);
436 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FIRST_FREE_OBJECTID,
438 test_err("qgroup counts didn't match expected values");
442 if (btrfs_verify_qgroup_counts(fs_info, BTRFS_FS_TREE_OBJECTID,
443 nodesize, nodesize)) {
444 test_err("qgroup counts didn't match expected values");
451 int btrfs_test_qgroups(u32 sectorsize, u32 nodesize)
453 struct btrfs_fs_info *fs_info = NULL;
454 struct btrfs_root *root;
455 struct btrfs_root *tmp_root;
458 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
460 test_err("couldn't allocate dummy fs info");
464 root = btrfs_alloc_dummy_root(fs_info);
466 test_err("couldn't allocate root");
471 /* We are using this root as our extent root */
472 root->fs_info->extent_root = root;
475 * Some of the paths we test assume we have a filled out fs_info, so we
476 * just need to add the root in there so we don't panic.
478 root->fs_info->tree_root = root;
479 root->fs_info->quota_root = root;
480 set_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags);
483 * Can't use bytenr 0, some things freak out
484 * *cough*backref walking code*cough*
486 root->node = alloc_test_extent_buffer(root->fs_info, nodesize);
487 if (IS_ERR(root->node)) {
488 test_err("couldn't allocate dummy buffer");
489 ret = PTR_ERR(root->node);
492 btrfs_set_header_level(root->node, 0);
493 btrfs_set_header_nritems(root->node, 0);
494 root->alloc_bytenr += 2 * nodesize;
496 tmp_root = btrfs_alloc_dummy_root(fs_info);
497 if (IS_ERR(tmp_root)) {
498 test_err("couldn't allocate a fs root");
499 ret = PTR_ERR(tmp_root);
503 tmp_root->root_key.objectid = BTRFS_FS_TREE_OBJECTID;
504 root->fs_info->fs_root = tmp_root;
505 ret = btrfs_insert_fs_root(root->fs_info, tmp_root);
507 test_err("couldn't insert fs root %d", ret);
511 tmp_root = btrfs_alloc_dummy_root(fs_info);
512 if (IS_ERR(tmp_root)) {
513 test_err("couldn't allocate a fs root");
514 ret = PTR_ERR(tmp_root);
518 tmp_root->root_key.objectid = BTRFS_FIRST_FREE_OBJECTID;
519 ret = btrfs_insert_fs_root(root->fs_info, tmp_root);
521 test_err("couldn't insert fs root %d", ret);
525 test_msg("running qgroup tests");
526 ret = test_no_shared_qgroup(root, sectorsize, nodesize);
529 ret = test_multiple_refs(root, sectorsize, nodesize);
531 btrfs_free_dummy_root(root);
532 btrfs_free_dummy_fs_info(fs_info);