2 * Copyright (C) 2014 SUSE. 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.
18 * Authors: Mark Fasheh <mfasheh@suse.de>
23 #include <uuid/uuid.h>
24 #include "kerncompat.h"
25 #include "radix-tree.h"
28 #include "print-tree.h"
31 #include "rbtree-utils.h"
33 #include "qgroup-verify.h"
35 /*#define QGROUP_VERIFY_DEBUG*/
36 static unsigned long tot_extents_scanned = 0;
38 static void add_bytes(u64 root_objectid, u64 num_bytes, int exclusive);
42 u64 referenced_compressed;
44 u64 exclusive_compressed;
51 struct btrfs_disk_key key;
52 struct qgroup_info diskinfo;
54 struct qgroup_info info;
56 struct rb_node rb_node;
59 static struct counts_tree {
61 unsigned int num_groups;
62 } counts = { .root = RB_ROOT };
64 static struct rb_root by_bytenr = RB_ROOT;
67 * List of interior tree blocks. We walk this list after loading the
68 * extent tree to resolve implied refs. For each interior node we'll
69 * place a shared ref in the ref tree against each child object. This
70 * allows the shared ref resolving code to do the actual work later of
71 * finding roots to account against.
73 * An implied ref is when a tree block has refs on it that may not
74 * exist in any of its child nodes. Even though the refs might not
75 * exist further down the tree, the fact that our interior node has a
76 * ref means we need to account anything below it to all its roots.
78 static struct ulist *tree_blocks = NULL; /* unode->val = bytenr, ->aux
79 * = tree_block pointer */
91 struct rb_node bytenr_node;
94 #ifdef QGROUP_VERIFY_DEBUG
95 static void print_ref(struct ref *ref)
97 printf("bytenr: %llu\t\tnum_bytes: %llu\t\t parent: %llu\t\t"
98 "root: %llu\n", ref->bytenr, ref->num_bytes,
99 ref->parent, ref->root);
102 static void print_all_refs(void)
104 unsigned long count = 0;
106 struct rb_node *node;
108 node = rb_first(&by_bytenr);
110 ref = rb_entry(node, struct ref, bytenr_node);
115 node = rb_next(node);
118 printf("%lu extents scanned with %lu refs in total.\n",
119 tot_extents_scanned, count);
124 * Store by bytenr in rbtree
126 * The tree is sorted in ascending order by bytenr, then parent, then
127 * root. Since full refs have a parent == 0, those will come before
130 static int compare_ref(struct ref *orig, u64 bytenr, u64 root, u64 parent)
132 if (bytenr < orig->bytenr)
134 if (bytenr > orig->bytenr)
137 if (parent < orig->parent)
139 if (parent > orig->parent)
142 if (root < orig->root)
144 if (root > orig->root)
151 * insert a new ref into the tree. returns the existing ref entry
152 * if one is already there.
154 static struct ref *insert_ref(struct ref *ref)
157 struct rb_node **p = &by_bytenr.rb_node;
158 struct rb_node *parent = NULL;
163 curr = rb_entry(parent, struct ref, bytenr_node);
165 ret = compare_ref(curr, ref->bytenr, ref->root, ref->parent);
174 rb_link_node(&ref->bytenr_node, parent, p);
175 rb_insert_color(&ref->bytenr_node, &by_bytenr);
180 * Partial search, returns the first ref with matching bytenr. Caller
181 * can walk forward from there.
183 * Leftmost refs will be full refs - this is used to our advantage
184 * when resolving roots.
186 static struct ref *find_ref_bytenr(u64 bytenr)
188 struct rb_node *n = by_bytenr.rb_node;
192 ref = rb_entry(n, struct ref, bytenr_node);
194 if (bytenr < ref->bytenr)
196 else if (bytenr > ref->bytenr)
199 /* Walk to the left to find the first item */
200 struct rb_node *node_left = rb_prev(&ref->bytenr_node);
201 struct ref *ref_left;
204 ref_left = rb_entry(node_left, struct ref,
206 if (ref_left->bytenr != ref->bytenr)
209 node_left = rb_prev(node_left);
217 static struct ref *find_ref(u64 bytenr, u64 root, u64 parent)
219 struct rb_node *n = by_bytenr.rb_node;
224 ref = rb_entry(n, struct ref, bytenr_node);
226 ret = compare_ref(ref, bytenr, root, parent);
237 static struct ref *alloc_ref(u64 bytenr, u64 root, u64 parent, u64 num_bytes)
239 struct ref *ref = find_ref(bytenr, root, parent);
241 BUG_ON(parent && root);
244 ref = calloc(1, sizeof(*ref));
246 ref->bytenr = bytenr;
248 ref->parent = parent;
249 ref->num_bytes = num_bytes;
257 static void free_ref_node(struct rb_node *node)
259 struct ref *ref = rb_entry(node, struct ref, bytenr_node);
263 FREE_RB_BASED_TREE(ref, free_ref_node);
266 * Resolves all the possible roots for the ref at parent.
268 static void find_parent_roots(struct ulist *roots, u64 parent)
271 struct rb_node *node;
274 * Search the rbtree for the first ref with bytenr == parent.
275 * Walk forward so long as bytenr == parent, adding resolved root ids.
276 * For each unresolved root, we recurse
278 ref = find_ref_bytenr(parent);
279 node = &ref->bytenr_node;
281 BUG_ON(ref->bytenr != parent);
285 * Random sanity check, are we actually getting the
288 struct rb_node *prev_node = rb_prev(&ref->bytenr_node);
291 prev = rb_entry(prev_node, struct ref, bytenr_node);
292 BUG_ON(prev->bytenr == parent);
298 ulist_add(roots, ref->root, 0, 0);
300 find_parent_roots(roots, ref->parent);
302 node = rb_next(node);
304 ref = rb_entry(node, struct ref, bytenr_node);
305 } while (node && ref->bytenr == parent);
308 static void print_subvol_info(u64 subvolid, u64 bytenr, u64 num_bytes,
309 struct ulist *roots);
311 * Account each ref. Walk the refs, for each set of refs in a
314 * - add the roots for direct refs to the ref roots ulist
316 * - resolve all possible roots for shared refs, insert each
317 * of those into ref_roots ulist (this is a recursive process)
319 * - Walk ref_roots ulist, adding extent bytes to each qgroup count that
320 * cooresponds to a found root.
322 static void account_all_refs(int do_qgroups, u64 search_subvol)
326 struct rb_node *node;
327 u64 bytenr, num_bytes;
328 struct ulist *roots = ulist_alloc(0);
329 struct ulist_iterator uiter;
330 struct ulist_node *unode;
332 node = rb_first(&by_bytenr);
336 ref = rb_entry(node, struct ref, bytenr_node);
338 * Walk forward through the list of refs for this
339 * bytenr, adding roots to our ulist. If it's a full
340 * ref, then we have the easy case. Otherwise we need
341 * to search for roots.
343 bytenr = ref->bytenr;
344 num_bytes = ref->num_bytes;
346 BUG_ON(ref->bytenr != bytenr);
347 BUG_ON(ref->num_bytes != num_bytes);
349 ulist_add(roots, ref->root, 0, 0);
351 find_parent_roots(roots, ref->parent);
354 * When we leave this inner loop, node is set
355 * to next in our tree and will be turned into
356 * a ref object up top
358 node = rb_next(node);
360 ref = rb_entry(node, struct ref, bytenr_node);
361 } while (node && ref->bytenr == bytenr);
364 * Now that we have all roots, we can properly account
365 * this extent against the corresponding qgroups.
367 if (roots->nnodes == 1)
373 print_subvol_info(search_subvol, bytenr, num_bytes,
376 ULIST_ITER_INIT(&uiter);
377 while ((unode = ulist_next(roots, &uiter))) {
378 BUG_ON(unode->val == 0ULL);
379 /* We only want to account fs trees */
380 if (is_fstree(unode->val) && do_qgroups)
381 add_bytes(unode->val, num_bytes, exclusive);
388 static u64 resolve_one_root(u64 bytenr)
390 struct ref *ref = find_ref_bytenr(bytenr);
396 return resolve_one_root(ref->parent);
399 static inline struct tree_block *unode_tree_block(struct ulist_node *unode)
401 return u64_to_ptr(unode->aux);
403 static inline u64 unode_bytenr(struct ulist_node *unode)
408 static int alloc_tree_block(u64 bytenr, u64 num_bytes, int level)
410 struct tree_block *block = calloc(1, sizeof(*block));
413 block->num_bytes = num_bytes;
414 block->level = level;
415 if (ulist_add(tree_blocks, bytenr, ptr_to_u64(block), 0) >= 0)
422 static void free_tree_blocks(void)
424 struct ulist_iterator uiter;
425 struct ulist_node *unode;
430 ULIST_ITER_INIT(&uiter);
431 while ((unode = ulist_next(tree_blocks, &uiter)))
432 free(unode_tree_block(unode));
433 ulist_free(tree_blocks);
437 #ifdef QGROUP_VERIFY_DEBUG
438 static void print_tree_block(u64 bytenr, struct tree_block *block)
441 struct rb_node *node;
443 printf("tree block: %llu\t\tlevel: %d\n", (unsigned long long)bytenr,
446 ref = find_ref_bytenr(bytenr);
447 node = &ref->bytenr_node;
450 node = rb_next(node);
452 ref = rb_entry(node, struct ref, bytenr_node);
453 } while (node && ref->bytenr == bytenr);
458 static void print_all_tree_blocks(void)
460 struct ulist_iterator uiter;
461 struct ulist_node *unode;
466 printf("Listing all found interior tree nodes:\n");
468 ULIST_ITER_INIT(&uiter);
469 while ((unode = ulist_next(tree_blocks, &uiter)))
470 print_tree_block(unode_bytenr(unode), unode_tree_block(unode));
474 static int add_refs_for_leaf_items(struct extent_buffer *eb, u64 ref_parent)
478 u64 bytenr, num_bytes;
479 struct btrfs_key key;
480 struct btrfs_disk_key disk_key;
481 struct btrfs_file_extent_item *fi;
483 nr = btrfs_header_nritems(eb);
484 for (i = 0; i < nr; i++) {
485 btrfs_item_key(eb, &disk_key, i);
486 btrfs_disk_key_to_cpu(&key, &disk_key);
488 if (key.type != BTRFS_EXTENT_DATA_KEY)
491 fi = btrfs_item_ptr(eb, i, struct btrfs_file_extent_item);
492 /* filter out: inline, disk_bytenr == 0, compressed?
493 * not if we can avoid it */
494 extent_type = btrfs_file_extent_type(eb, fi);
496 if (extent_type == BTRFS_FILE_EXTENT_INLINE)
499 bytenr = btrfs_file_extent_disk_bytenr(eb, fi);
503 num_bytes = btrfs_file_extent_disk_num_bytes(eb, fi);
504 if (alloc_ref(bytenr, 0, ref_parent, num_bytes) == NULL)
511 static int travel_tree(struct btrfs_fs_info *info, struct btrfs_root *root,
512 u64 bytenr, u64 num_bytes, u64 ref_parent)
515 struct extent_buffer *eb;
519 // printf("travel_tree: bytenr: %llu\tnum_bytes: %llu\tref_parent: %llu\n",
520 // bytenr, num_bytes, ref_parent);
522 eb = read_tree_block(root, bytenr, num_bytes, 0);
523 if (!extent_buffer_uptodate(eb))
527 /* Don't add a ref for our starting tree block to itself */
528 if (bytenr != ref_parent) {
529 if (alloc_ref(bytenr, 0, ref_parent, num_bytes) == NULL)
533 if (btrfs_is_leaf(eb)) {
534 ret = add_refs_for_leaf_items(eb, ref_parent);
539 * Interior nodes are tuples of (key, bytenr) where key is the
540 * leftmost key in the tree block pointed to by bytenr. We
541 * don't have to care about key here, just follow the bytenr
544 nr = btrfs_header_nritems(eb);
545 for (i = 0; i < nr; i++) {
546 new_bytenr = btrfs_node_blockptr(eb, i);
547 new_num_bytes = btrfs_level_size(root,
548 btrfs_header_level(eb) - 1);
550 ret = travel_tree(info, root, new_bytenr, new_num_bytes,
555 free_extent_buffer(eb);
559 static int add_refs_for_implied(struct btrfs_fs_info *info, u64 bytenr,
560 struct tree_block *block)
563 u64 root_id = resolve_one_root(bytenr);
564 struct btrfs_root *root;
565 struct btrfs_key key;
567 key.objectid = root_id;
568 key.type = BTRFS_ROOT_ITEM_KEY;
569 key.offset = (u64)-1;
572 * XXX: Don't free the root object as we don't know whether it
573 * came off our fs_info struct or not.
575 root = btrfs_read_fs_root(info, &key);
576 if (!root || IS_ERR(root))
579 ret = travel_tree(info, root, bytenr, block->num_bytes, bytenr);
587 * Place shared refs in the ref tree for each child of an interior tree node.
589 static int map_implied_refs(struct btrfs_fs_info *info)
592 struct ulist_iterator uiter;
593 struct ulist_node *unode;
595 ULIST_ITER_INIT(&uiter);
596 while ((unode = ulist_next(tree_blocks, &uiter))) {
597 ret = add_refs_for_implied(info, unode_bytenr(unode),
598 unode_tree_block(unode));
607 * insert a new root into the tree. returns the existing root entry
608 * if one is already there. qgroupid is used
611 static int insert_count(struct qgroup_count *qc)
613 struct rb_node **p = &counts.root.rb_node;
614 struct rb_node *parent = NULL;
615 struct qgroup_count *curr;
619 curr = rb_entry(parent, struct qgroup_count, rb_node);
621 if (qc->qgroupid < curr->qgroupid)
623 else if (qc->qgroupid > curr->qgroupid)
629 rb_link_node(&qc->rb_node, parent, p);
630 rb_insert_color(&qc->rb_node, &counts.root);
634 static struct qgroup_count *find_count(u64 qgroupid)
636 struct rb_node *n = counts.root.rb_node;
637 struct qgroup_count *count;
640 count = rb_entry(n, struct qgroup_count, rb_node);
642 if (qgroupid < count->qgroupid)
644 else if (qgroupid > count->qgroupid)
652 static struct qgroup_count *alloc_count(struct btrfs_disk_key *key,
653 struct extent_buffer *leaf,
654 struct btrfs_qgroup_info_item *disk)
656 struct qgroup_count *c = calloc(1, sizeof(*c));
657 struct qgroup_info *item;
660 c->qgroupid = btrfs_disk_key_offset(key);
664 item->referenced = btrfs_qgroup_info_referenced(leaf, disk);
665 item->referenced_compressed =
666 btrfs_qgroup_info_referenced_compressed(leaf, disk);
667 item->exclusive = btrfs_qgroup_info_exclusive(leaf, disk);
668 item->exclusive_compressed =
669 btrfs_qgroup_info_exclusive_compressed(leaf, disk);
671 if (insert_count(c)) {
679 static void add_bytes(u64 root_objectid, u64 num_bytes, int exclusive)
681 struct qgroup_count *count = find_count(root_objectid);
682 struct qgroup_info *qg;
684 BUG_ON(num_bytes < 4096); /* Random sanity check. */
691 qg->referenced += num_bytes;
693 * count of compressed bytes is unimplemented, so we do the
696 qg->referenced_compressed += num_bytes;
699 qg->exclusive += num_bytes;
700 qg->exclusive_compressed += num_bytes;
704 static int load_quota_info(struct btrfs_fs_info *info)
707 struct btrfs_root *root = info->quota_root;
708 struct btrfs_root *tmproot;
709 struct btrfs_path path;
710 struct btrfs_key key;
711 struct btrfs_key root_key;
712 struct btrfs_disk_key disk_key;
713 struct extent_buffer *leaf;
714 struct btrfs_qgroup_info_item *item;
715 struct qgroup_count *count;
718 btrfs_init_path(&path);
724 ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
726 fprintf(stderr, "ERROR: Couldn't search slot: %d\n", ret);
731 leaf = path.nodes[0];
733 nr = btrfs_header_nritems(leaf);
734 for(i = 0; i < nr; i++) {
735 btrfs_item_key(leaf, &disk_key, i);
736 btrfs_disk_key_to_cpu(&key, &disk_key);
738 if (key.type == BTRFS_QGROUP_RELATION_KEY)
739 printf("Ignoring qgroup relation key %llu\n",
743 * Ignore: BTRFS_QGROUP_STATUS_KEY,
744 * BTRFS_QGROUP_LIMIT_KEY, BTRFS_QGROUP_RELATION_KEY
746 if (key.type != BTRFS_QGROUP_INFO_KEY)
749 item = btrfs_item_ptr(leaf, i,
750 struct btrfs_qgroup_info_item);
752 count = alloc_count(&disk_key, leaf, item);
755 fprintf(stderr, "ERROR: out of memory\n");
759 root_key.objectid = key.offset;
760 root_key.type = BTRFS_ROOT_ITEM_KEY;
761 root_key.offset = (u64)-1;
762 tmproot = btrfs_read_fs_root_no_cache(info, &root_key);
763 if (tmproot && !IS_ERR(tmproot)) {
764 count->subvol_exists = 1;
769 ret = btrfs_next_leaf(root, &path);
775 btrfs_release_path(&path);
780 static int add_inline_refs(struct btrfs_fs_info *info,
781 struct extent_buffer *ei_leaf, int slot,
782 u64 bytenr, u64 num_bytes, int meta_item)
784 struct btrfs_extent_item *ei;
785 struct btrfs_extent_inline_ref *iref;
786 struct btrfs_extent_data_ref *dref;
787 u64 flags, root_obj, offset, parent;
788 u32 item_size = btrfs_item_size_nr(ei_leaf, slot);
793 ei = btrfs_item_ptr(ei_leaf, slot, struct btrfs_extent_item);
794 flags = btrfs_extent_flags(ei_leaf, ei);
796 if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !meta_item) {
797 struct btrfs_tree_block_info *tbinfo;
798 tbinfo = (struct btrfs_tree_block_info *)(ei + 1);
799 iref = (struct btrfs_extent_inline_ref *)(tbinfo + 1);
801 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
804 ptr = (unsigned long)iref;
805 end = (unsigned long)ei + item_size;
807 iref = (struct btrfs_extent_inline_ref *)ptr;
809 parent = root_obj = 0;
810 offset = btrfs_extent_inline_ref_offset(ei_leaf, iref);
811 type = btrfs_extent_inline_ref_type(ei_leaf, iref);
813 case BTRFS_TREE_BLOCK_REF_KEY:
816 case BTRFS_EXTENT_DATA_REF_KEY:
817 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
818 root_obj = btrfs_extent_data_ref_root(ei_leaf, dref);
820 case BTRFS_SHARED_DATA_REF_KEY:
821 case BTRFS_SHARED_BLOCK_REF_KEY:
828 if (alloc_ref(bytenr, root_obj, parent, num_bytes) == NULL)
831 ptr += btrfs_extent_inline_ref_size(type);
837 static int add_keyed_ref(struct btrfs_fs_info *info,
838 struct btrfs_key *key,
839 struct extent_buffer *leaf, int slot,
840 u64 bytenr, u64 num_bytes)
842 u64 root_obj = 0, parent = 0;
843 struct btrfs_extent_data_ref *dref;
846 case BTRFS_TREE_BLOCK_REF_KEY:
847 root_obj = key->offset;
849 case BTRFS_EXTENT_DATA_REF_KEY:
850 dref = btrfs_item_ptr(leaf, slot, struct btrfs_extent_data_ref);
851 root_obj = btrfs_extent_data_ref_root(leaf, dref);
853 case BTRFS_SHARED_DATA_REF_KEY:
854 case BTRFS_SHARED_BLOCK_REF_KEY:
855 parent = key->offset;
861 if (alloc_ref(bytenr, root_obj, parent, num_bytes) == NULL)
868 * return value of 0 indicates leaf or not meta data. The code that
869 * calls this does not need to make a distinction between the two as
870 * it is only concerned with intermediate blocks which will always
873 static int get_tree_block_level(struct btrfs_key *key,
874 struct extent_buffer *ei_leaf,
878 int meta_key = key->type == BTRFS_METADATA_ITEM_KEY;
880 struct btrfs_extent_item *ei;
882 ei = btrfs_item_ptr(ei_leaf, slot, struct btrfs_extent_item);
883 flags = btrfs_extent_flags(ei_leaf, ei);
885 if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !meta_key) {
886 struct btrfs_tree_block_info *tbinfo;
887 tbinfo = (struct btrfs_tree_block_info *)(ei + 1);
888 level = btrfs_tree_block_level(ei_leaf, tbinfo);
889 } else if (meta_key) {
890 /* skinny metadata */
891 level = (int)key->offset;
897 * Walk the extent tree, allocating a ref item for every ref and
898 * storing it in the bytenr tree.
900 static int scan_extents(struct btrfs_fs_info *info,
903 int ret, i, nr, level;
904 struct btrfs_root *root = info->extent_root;
905 struct btrfs_key key;
906 struct btrfs_path path;
907 struct btrfs_disk_key disk_key;
908 struct extent_buffer *leaf;
909 u64 bytenr = 0, num_bytes = 0;
911 btrfs_init_path(&path);
913 key.objectid = start;
917 ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
919 fprintf(stderr, "ERROR: Couldn't search slot: %d\n", ret);
925 leaf = path.nodes[0];
927 nr = btrfs_header_nritems(leaf);
928 for(i = 0; i < nr; i++) {
929 btrfs_item_key(leaf, &disk_key, i);
930 btrfs_disk_key_to_cpu(&key, &disk_key);
932 if (key.objectid < start)
935 if (key.objectid > end)
938 if (key.type == BTRFS_EXTENT_ITEM_KEY ||
939 key.type == BTRFS_METADATA_ITEM_KEY) {
942 tot_extents_scanned++;
944 bytenr = key.objectid;
945 num_bytes = key.offset;
946 if (key.type == BTRFS_METADATA_ITEM_KEY) {
947 num_bytes = info->extent_root->leafsize;
951 ret = add_inline_refs(info, leaf, i, bytenr,
956 level = get_tree_block_level(&key, leaf, i);
958 if (alloc_tree_block(bytenr, num_bytes,
966 if (key.type > BTRFS_SHARED_DATA_REF_KEY)
968 if (key.type < BTRFS_TREE_BLOCK_REF_KEY)
972 * Keyed refs should come after their extent
973 * item in the tree. As a result, the value of
974 * bytenr and num_bytes should be unchanged
975 * from the above block that catches the
976 * original extent item.
978 BUG_ON(key.objectid != bytenr);
980 ret = add_keyed_ref(info, &key, leaf, i, bytenr,
986 ret = btrfs_next_leaf(root, &path);
990 "ERROR: Next leaf failed: %d\n", ret);
999 btrfs_release_path(&path);
1004 static void print_fields(u64 bytes, u64 bytes_compressed, char *prefix,
1007 printf("%s\t\t%s %llu %s compressed %llu\n",
1008 prefix, type, (unsigned long long)bytes, type,
1009 (unsigned long long)bytes_compressed);
1012 static void print_fields_signed(long long bytes,
1013 long long bytes_compressed,
1014 char *prefix, char *type)
1016 printf("%s\t\t%s %lld %s compressed %lld\n",
1017 prefix, type, bytes, type, bytes_compressed);
1020 static void print_qgroup_difference(struct qgroup_count *count, int verbose)
1023 struct qgroup_info *info = &count->info;
1024 struct qgroup_info *disk = &count->diskinfo;
1025 long long excl_diff = info->exclusive - disk->exclusive;
1026 long long ref_diff = info->referenced - disk->referenced;
1028 is_different = excl_diff || ref_diff;
1030 if (verbose || (is_different && count->subvol_exists)) {
1031 printf("Counts for qgroup id: %llu %s\n",
1032 (unsigned long long)count->qgroupid,
1033 is_different ? "are different" : "");
1035 print_fields(info->referenced, info->referenced_compressed,
1036 "our:", "referenced");
1037 print_fields(disk->referenced, disk->referenced_compressed,
1038 "disk:", "referenced");
1040 print_fields_signed(ref_diff, ref_diff,
1041 "diff:", "referenced");
1042 print_fields(info->exclusive, info->exclusive_compressed,
1043 "our:", "exclusive");
1044 print_fields(disk->exclusive, disk->exclusive_compressed,
1045 "disk:", "exclusive");
1047 print_fields_signed(excl_diff, excl_diff,
1048 "diff:", "exclusive");
1052 void print_qgroup_report(int all)
1054 struct rb_node *node;
1055 struct qgroup_count *c;
1057 node = rb_first(&counts.root);
1059 c = rb_entry(node, struct qgroup_count, rb_node);
1060 print_qgroup_difference(c, all);
1061 node = rb_next(node);
1065 int qgroup_verify_all(struct btrfs_fs_info *info)
1069 if (!info->quota_enabled)
1072 tree_blocks = ulist_alloc(0);
1075 "ERROR: Out of memory while allocating ulist.\n");
1079 ret = load_quota_info(info);
1081 fprintf(stderr, "ERROR: Loading qgroups from disk: %d\n", ret);
1086 * Put all extent refs into our rbtree
1088 ret = scan_extents(info, 0, ~0ULL);
1090 fprintf(stderr, "ERROR: while scanning extent tree: %d\n", ret);
1094 ret = map_implied_refs(info);
1096 fprintf(stderr, "ERROR: while mapping refs: %d\n", ret);
1100 account_all_refs(1, 0);
1104 * Don't free the qgroup count records as they will be walked
1105 * later via the print function.
1108 free_ref_tree(&by_bytenr);
1112 static void __print_subvol_info(u64 bytenr, u64 num_bytes, struct ulist *roots)
1114 int n = roots->nnodes;
1115 struct ulist_iterator uiter;
1116 struct ulist_node *unode;
1118 printf("%llu\t%llu\t%d\t", bytenr, num_bytes, n);
1120 ULIST_ITER_INIT(&uiter);
1121 while ((unode = ulist_next(roots, &uiter))) {
1122 printf("%llu ", unode->val);
1127 static void print_subvol_info(u64 subvolid, u64 bytenr, u64 num_bytes,
1128 struct ulist *roots)
1130 struct ulist_iterator uiter;
1131 struct ulist_node *unode;
1133 ULIST_ITER_INIT(&uiter);
1134 while ((unode = ulist_next(roots, &uiter))) {
1135 BUG_ON(unode->val == 0ULL);
1136 if (unode->val == subvolid) {
1137 __print_subvol_info(bytenr, num_bytes, roots);
1145 int print_extent_state(struct btrfs_fs_info *info, u64 subvol)
1149 tree_blocks = ulist_alloc(0);
1152 "ERROR: Out of memory while allocating ulist.\n");
1157 * Put all extent refs into our rbtree
1159 ret = scan_extents(info, 0, ~0ULL);
1161 fprintf(stderr, "ERROR: while scanning extent tree: %d\n", ret);
1165 ret = map_implied_refs(info);
1167 fprintf(stderr, "ERROR: while mapping refs: %d\n", ret);
1171 printf("Offset\t\tLen\tRoot Refs\tRoots\n");
1172 account_all_refs(0, subvol);
1176 free_ref_tree(&by_bytenr);