2 * Copyright (C) 2013 Facebook. 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.
19 #include "btrfs-tests.h"
21 #include "../transaction.h"
22 #include "../disk-io.h"
23 #include "../qgroup.h"
25 static void init_dummy_trans(struct btrfs_trans_handle *trans)
27 memset(trans, 0, sizeof(*trans));
29 INIT_LIST_HEAD(&trans->qgroup_ref_list);
30 trans->type = __TRANS_DUMMY;
33 static int insert_normal_tree_ref(struct btrfs_root *root, u64 bytenr,
34 u64 num_bytes, u64 parent, u64 root_objectid)
36 struct btrfs_trans_handle trans;
37 struct btrfs_extent_item *item;
38 struct btrfs_extent_inline_ref *iref;
39 struct btrfs_tree_block_info *block_info;
40 struct btrfs_path *path;
41 struct extent_buffer *leaf;
43 u32 size = sizeof(*item) + sizeof(*iref) + sizeof(*block_info);
46 init_dummy_trans(&trans);
48 ins.objectid = bytenr;
49 ins.type = BTRFS_EXTENT_ITEM_KEY;
50 ins.offset = num_bytes;
52 path = btrfs_alloc_path();
54 test_msg("Couldn't allocate path\n");
58 path->leave_spinning = 1;
59 ret = btrfs_insert_empty_item(&trans, root, path, &ins, size);
61 test_msg("Couldn't insert ref %d\n", ret);
62 btrfs_free_path(path);
66 leaf = path->nodes[0];
67 item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
68 btrfs_set_extent_refs(leaf, item, 1);
69 btrfs_set_extent_generation(leaf, item, 1);
70 btrfs_set_extent_flags(leaf, item, BTRFS_EXTENT_FLAG_TREE_BLOCK);
71 block_info = (struct btrfs_tree_block_info *)(item + 1);
72 btrfs_set_tree_block_level(leaf, block_info, 1);
73 iref = (struct btrfs_extent_inline_ref *)(block_info + 1);
75 btrfs_set_extent_inline_ref_type(leaf, iref,
76 BTRFS_SHARED_BLOCK_REF_KEY);
77 btrfs_set_extent_inline_ref_offset(leaf, iref, parent);
79 btrfs_set_extent_inline_ref_type(leaf, iref, BTRFS_TREE_BLOCK_REF_KEY);
80 btrfs_set_extent_inline_ref_offset(leaf, iref, root_objectid);
82 btrfs_free_path(path);
86 static int add_tree_ref(struct btrfs_root *root, u64 bytenr, u64 num_bytes,
87 u64 parent, u64 root_objectid)
89 struct btrfs_trans_handle trans;
90 struct btrfs_extent_item *item;
91 struct btrfs_path *path;
96 init_dummy_trans(&trans);
98 key.objectid = bytenr;
99 key.type = BTRFS_EXTENT_ITEM_KEY;
100 key.offset = num_bytes;
102 path = btrfs_alloc_path();
104 test_msg("Couldn't allocate path\n");
108 path->leave_spinning = 1;
109 ret = btrfs_search_slot(&trans, root, &key, path, 0, 1);
111 test_msg("Couldn't find extent ref\n");
112 btrfs_free_path(path);
116 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
117 struct btrfs_extent_item);
118 refs = btrfs_extent_refs(path->nodes[0], item);
119 btrfs_set_extent_refs(path->nodes[0], item, refs + 1);
120 btrfs_release_path(path);
122 key.objectid = bytenr;
124 key.type = BTRFS_SHARED_BLOCK_REF_KEY;
127 key.type = BTRFS_TREE_BLOCK_REF_KEY;
128 key.offset = root_objectid;
131 ret = btrfs_insert_empty_item(&trans, root, path, &key, 0);
133 test_msg("Failed to insert backref\n");
134 btrfs_free_path(path);
138 static int remove_extent_item(struct btrfs_root *root, u64 bytenr,
141 struct btrfs_trans_handle trans;
142 struct btrfs_key key;
143 struct btrfs_path *path;
146 init_dummy_trans(&trans);
148 key.objectid = bytenr;
149 key.type = BTRFS_EXTENT_ITEM_KEY;
150 key.offset = num_bytes;
152 path = btrfs_alloc_path();
154 test_msg("Couldn't allocate path\n");
157 path->leave_spinning = 1;
159 ret = btrfs_search_slot(&trans, root, &key, path, -1, 1);
161 test_msg("Didn't find our key %d\n", ret);
162 btrfs_free_path(path);
165 btrfs_del_item(&trans, root, path);
166 btrfs_free_path(path);
170 static int remove_extent_ref(struct btrfs_root *root, u64 bytenr,
171 u64 num_bytes, u64 parent, u64 root_objectid)
173 struct btrfs_trans_handle trans;
174 struct btrfs_extent_item *item;
175 struct btrfs_path *path;
176 struct btrfs_key key;
180 init_dummy_trans(&trans);
182 key.objectid = bytenr;
183 key.type = BTRFS_EXTENT_ITEM_KEY;
184 key.offset = num_bytes;
186 path = btrfs_alloc_path();
188 test_msg("Couldn't allocate path\n");
192 path->leave_spinning = 1;
193 ret = btrfs_search_slot(&trans, root, &key, path, 0, 1);
195 test_msg("Couldn't find extent ref\n");
196 btrfs_free_path(path);
200 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
201 struct btrfs_extent_item);
202 refs = btrfs_extent_refs(path->nodes[0], item);
203 btrfs_set_extent_refs(path->nodes[0], item, refs - 1);
204 btrfs_release_path(path);
206 key.objectid = bytenr;
208 key.type = BTRFS_SHARED_BLOCK_REF_KEY;
211 key.type = BTRFS_TREE_BLOCK_REF_KEY;
212 key.offset = root_objectid;
215 ret = btrfs_search_slot(&trans, root, &key, path, -1, 1);
217 test_msg("Couldn't find backref %d\n", ret);
218 btrfs_free_path(path);
221 btrfs_del_item(&trans, root, path);
222 btrfs_free_path(path);
226 static int test_no_shared_qgroup(struct btrfs_root *root)
228 struct btrfs_trans_handle trans;
229 struct btrfs_fs_info *fs_info = root->fs_info;
232 init_dummy_trans(&trans);
234 test_msg("Qgroup basic add\n");
235 ret = btrfs_create_qgroup(NULL, fs_info, 5, NULL);
237 test_msg("Couldn't create a qgroup %d\n", ret);
241 ret = btrfs_qgroup_record_ref(&trans, fs_info, 5, 4096, 4096,
242 BTRFS_QGROUP_OPER_ADD_EXCL, 0);
244 test_msg("Couldn't add space to a qgroup %d\n", ret);
248 ret = insert_normal_tree_ref(root, 4096, 4096, 0, 5);
252 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
254 test_msg("Delayed qgroup accounting failed %d\n", ret);
258 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 4096)) {
259 test_msg("Qgroup counts didn't match expected values\n");
263 ret = remove_extent_item(root, 4096, 4096);
267 ret = btrfs_qgroup_record_ref(&trans, fs_info, 5, 4096, 4096,
268 BTRFS_QGROUP_OPER_SUB_EXCL, 0);
270 test_msg("Couldn't remove space from the qgroup %d\n", ret);
274 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
276 test_msg("Qgroup accounting failed %d\n", ret);
280 if (btrfs_verify_qgroup_counts(fs_info, 5, 0, 0)) {
281 test_msg("Qgroup counts didn't match expected values\n");
289 * Add a ref for two different roots to make sure the shared value comes out
290 * right, also remove one of the roots and make sure the exclusive count is
293 static int test_multiple_refs(struct btrfs_root *root)
295 struct btrfs_trans_handle trans;
296 struct btrfs_fs_info *fs_info = root->fs_info;
299 init_dummy_trans(&trans);
301 test_msg("Qgroup multiple refs test\n");
303 /* We have 5 created already from the previous test */
304 ret = btrfs_create_qgroup(NULL, fs_info, 256, NULL);
306 test_msg("Couldn't create a qgroup %d\n", ret);
310 ret = insert_normal_tree_ref(root, 4096, 4096, 0, 5);
314 ret = btrfs_qgroup_record_ref(&trans, fs_info, 5, 4096, 4096,
315 BTRFS_QGROUP_OPER_ADD_EXCL, 0);
317 test_msg("Couldn't add space to a qgroup %d\n", ret);
321 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
323 test_msg("Delayed qgroup accounting failed %d\n", ret);
327 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 4096)) {
328 test_msg("Qgroup counts didn't match expected values\n");
332 ret = add_tree_ref(root, 4096, 4096, 0, 256);
336 ret = btrfs_qgroup_record_ref(&trans, fs_info, 256, 4096, 4096,
337 BTRFS_QGROUP_OPER_ADD_SHARED, 0);
339 test_msg("Qgroup record ref failed %d\n", ret);
343 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
345 test_msg("Qgroup accounting failed %d\n", ret);
349 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 0)) {
350 test_msg("Qgroup counts didn't match expected values\n");
354 if (btrfs_verify_qgroup_counts(fs_info, 256, 4096, 0)) {
355 test_msg("Qgroup counts didn't match expected values\n");
359 ret = remove_extent_ref(root, 4096, 4096, 0, 256);
363 ret = btrfs_qgroup_record_ref(&trans, fs_info, 256, 4096, 4096,
364 BTRFS_QGROUP_OPER_SUB_SHARED, 0);
366 test_msg("Qgroup record ref failed %d\n", ret);
370 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
372 test_msg("Qgroup accounting failed %d\n", ret);
376 if (btrfs_verify_qgroup_counts(fs_info, 256, 0, 0)) {
377 test_msg("Qgroup counts didn't match expected values\n");
381 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 4096)) {
382 test_msg("Qgroup counts didn't match expected values\n");
389 int btrfs_test_qgroups(void)
391 struct btrfs_root *root;
392 struct btrfs_root *tmp_root;
395 root = btrfs_alloc_dummy_root();
397 test_msg("Couldn't allocate root\n");
398 return PTR_ERR(root);
401 root->fs_info = btrfs_alloc_dummy_fs_info();
402 if (!root->fs_info) {
403 test_msg("Couldn't allocate dummy fs info\n");
409 * Can't use bytenr 0, some things freak out
410 * *cough*backref walking code*cough*
412 root->node = alloc_test_extent_buffer(root->fs_info, 4096, 4096);
414 test_msg("Couldn't allocate dummy buffer\n");
418 root->alloc_bytenr += 8192;
420 tmp_root = btrfs_alloc_dummy_root();
421 if (IS_ERR(tmp_root)) {
422 test_msg("Couldn't allocate a fs root\n");
423 ret = PTR_ERR(tmp_root);
427 tmp_root->root_key.objectid = 5;
428 root->fs_info->fs_root = tmp_root;
429 ret = btrfs_insert_fs_root(root->fs_info, tmp_root);
431 test_msg("Couldn't insert fs root %d\n", ret);
435 tmp_root = btrfs_alloc_dummy_root();
436 if (IS_ERR(tmp_root)) {
437 test_msg("Couldn't allocate a fs root\n");
438 ret = PTR_ERR(tmp_root);
442 tmp_root->root_key.objectid = 256;
443 ret = btrfs_insert_fs_root(root->fs_info, tmp_root);
445 test_msg("Couldn't insert fs root %d\n", ret);
449 /* We are using this root as our extent root */
450 root->fs_info->extent_root = root;
453 * Some of the paths we test assume we have a filled out fs_info, so we
454 * just need to addt he root in there so we don't panic.
456 root->fs_info->tree_root = root;
457 root->fs_info->quota_root = root;
458 root->fs_info->quota_enabled = 1;
460 test_msg("Running qgroup tests\n");
461 ret = test_no_shared_qgroup(root);
464 ret = test_multiple_refs(root);
466 btrfs_free_dummy_root(root);