#include "commands.h"
#include "free-space-cache.h"
#include "btrfsck.h"
+#include "qgroup-verify.h"
+#include "rbtree-utils.h"
+#include "backref.h"
+#include "ulist.h"
static u64 bytes_used = 0;
static u64 total_csum_bytes = 0;
static u64 data_bytes_referenced = 0;
static int found_old_backref = 0;
static LIST_HEAD(duplicate_extents);
+static LIST_HEAD(delete_items);
static int repair = 0;
+static int no_holes = 0;
+static int init_extent_tree = 0;
+static int check_data_csum = 0;
struct extent_backref {
struct list_head list;
struct list_head list;
struct cache_extent cache;
struct btrfs_disk_key parent_key;
- unsigned int found_rec;
u64 start;
u64 max_size;
u64 nr;
u64 refs;
u64 extent_item_refs;
u64 generation;
+ u64 parent_generation;
u64 info_objectid;
- u64 num_duplicates;
+ u32 num_duplicates;
u8 info_level;
+ unsigned int found_rec:1;
unsigned int content_checked:1;
unsigned int owner_ref_checked:1;
unsigned int is_root:1;
char name[0];
};
+struct dropping_root_item_record {
+ struct list_head list;
+ struct btrfs_root_item ri;
+ struct btrfs_key found_key;
+};
+
#define REF_ERR_NO_DIR_ITEM (1 << 0)
#define REF_ERR_NO_DIR_INDEX (1 << 1)
#define REF_ERR_NO_INODE_REF (1 << 2)
int root_level;
};
+struct bad_item {
+ struct btrfs_key key;
+ u64 root_id;
+ struct list_head list;
+};
+
static void reset_cached_block_groups(struct btrfs_fs_info *fs_info);
+static void record_root_in_trans(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root)
+{
+ if (root->last_trans != trans->transid) {
+ root->track_dirty = 1;
+ root->last_trans = trans->transid;
+ root->commit_root = root->node;
+ extent_buffer_get(root->node);
+ }
+}
+
static u8 imode_to_type(u32 imode)
{
#define S_SHIFT 12
return rec;
}
-static void print_inode_error(int errors)
+static void print_inode_error(struct btrfs_root *root, struct inode_record *rec)
{
+ u64 root_objectid = root->root_key.objectid;
+ int errors = rec->errors;
+
+ if (!errors)
+ return;
+ /* reloc root errors, we print its corresponding fs root objectid*/
+ if (root_objectid == BTRFS_TREE_RELOC_OBJECTID) {
+ root_objectid = root->root_key.offset;
+ fprintf(stderr, "reloc");
+ }
+ fprintf(stderr, "root %llu inode %llu errors %x",
+ (unsigned long long) root_objectid,
+ (unsigned long long) rec->ino, rec->errors);
+
if (errors & I_ERR_NO_INODE_ITEM)
fprintf(stderr, ", no inode item");
if (errors & I_ERR_NO_ORPHAN_ITEM)
rec->errors |= I_ERR_FILE_NBYTES_WRONG;
if (rec->extent_start == (u64)-1 || rec->extent_start > 0)
rec->first_extent_gap = 0;
- if (rec->nlink > 0 && (rec->extent_end < rec->isize ||
- rec->first_extent_gap < rec->isize))
+ if (rec->nlink > 0 && !no_holes &&
+ (rec->extent_end < rec->isize ||
+ rec->first_extent_gap < rec->isize))
rec->errors |= I_ERR_FILE_EXTENT_DISCOUNT;
}
struct inode_backref *backref;
list_for_each_entry(backref, &rec->backrefs, list) {
+ if (rec->ino == BTRFS_MULTIPLE_OBJECTIDS)
+ break;
if (backref->dir != dir || backref->namelen != namelen)
continue;
if (memcmp(name, backref->name, namelen))
backref->errors |= REF_ERR_DUP_INODE_REF;
if (backref->found_dir_index && backref->index != index)
backref->errors |= REF_ERR_INDEX_UNMATCH;
+ else
+ backref->index = index;
backref->ref_type = itemtype;
- backref->index = index;
backref->found_inode_ref = 1;
} else {
BUG_ON(1);
return 0;
}
+/*
+ * Returns:
+ * < 0 - on error
+ * 1 - if the root with id child_root_id is a child of root parent_root_id
+ * 0 - if the root child_root_id isn't a child of the root parent_root_id but
+ * has other root(s) as parent(s)
+ * 2 - if the root child_root_id doesn't have any parent roots
+ */
static int is_child_root(struct btrfs_root *root, u64 parent_root_id,
u64 child_root_id)
{
key.offset = child_root_id;
ret = btrfs_search_slot(NULL, root->fs_info->tree_root, &key, &path,
0, 0);
- BUG_ON(ret < 0);
+ if (ret < 0)
+ return ret;
btrfs_release_path(&path);
if (!ret)
return 1;
key.offset = 0;
ret = btrfs_search_slot(NULL, root->fs_info->tree_root, &key, &path,
0, 0);
- BUG_ON(ret <= 0);
+ if (ret < 0)
+ goto out;
while (1) {
leaf = path.nodes[0];
if (path.slots[0] >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(root->fs_info->tree_root, &path);
- BUG_ON(ret < 0);
-
- if (ret > 0)
+ if (ret)
break;
leaf = path.nodes[0];
}
path.slots[0]++;
}
-
+out:
btrfs_release_path(&path);
- return has_parent? 0 : -1;
+ if (ret < 0)
+ return ret;
+ return has_parent ? 0 : 2;
}
static int process_dir_item(struct btrfs_root *root,
namebuf, len, filetype,
key->type, error);
} else {
- fprintf(stderr, "warning line %d\n", __LINE__);
+ fprintf(stderr, "invalid location in dir item %u\n",
+ location.type);
+ add_inode_backref(inode_cache, BTRFS_MULTIPLE_OBJECTIDS,
+ key->objectid, key->offset, namebuf,
+ len, filetype, key->type, error);
}
len = sizeof(*di) + name_len + data_len;
}
-static u64 count_csum_range(struct btrfs_root *root, u64 start, u64 len)
+static int count_csum_range(struct btrfs_root *root, u64 start,
+ u64 len, u64 *found)
{
struct btrfs_key key;
struct btrfs_path path;
struct extent_buffer *leaf;
- int ret ;
+ int ret;
size_t size;
- u64 found = 0;
+ *found = 0;
u64 csum_end;
u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
ret = btrfs_search_slot(NULL, root->fs_info->csum_root,
&key, &path, 0, 0);
- BUG_ON(ret < 0);
+ if (ret < 0)
+ goto out;
if (ret > 0 && path.slots[0] > 0) {
leaf = path.nodes[0];
btrfs_item_key_to_cpu(leaf, &key, path.slots[0] - 1);
leaf = path.nodes[0];
if (path.slots[0] >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(root->fs_info->csum_root, &path);
- BUG_ON(ret < 0);
if (ret > 0)
break;
+ else if (ret < 0)
+ goto out;
leaf = path.nodes[0];
}
size = min(csum_end - start, len);
len -= size;
start += size;
- found += size;
+ *found += size;
}
path.slots[0]++;
}
+out:
+ if (ret < 0)
+ return ret;
btrfs_release_path(&path);
- return found;
+ return 0;
}
static int process_file_extent(struct btrfs_root *root,
u64 extent_offset = 0;
u64 mask = root->sectorsize - 1;
int extent_type;
+ int ret;
rec = active_node->current;
BUG_ON(rec->ino != key->objectid || rec->refs > 1);
extent_type = btrfs_file_extent_type(eb, fi);
if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
- num_bytes = btrfs_file_extent_inline_len(eb, fi);
+ num_bytes = btrfs_file_extent_inline_len(eb, slot, fi);
if (num_bytes == 0)
rec->errors |= I_ERR_BAD_FILE_EXTENT;
rec->found_size += num_bytes;
else
disk_bytenr += extent_offset;
- found = count_csum_range(root, disk_bytenr, num_bytes);
+ ret = count_csum_range(root, disk_bytenr, num_bytes, &found);
+ if (ret < 0)
+ return ret;
if (extent_type == BTRFS_FILE_EXTENT_REG) {
if (found > 0)
rec->found_csum_item = 1;
if (key.objectid == BTRFS_FREE_SPACE_OBJECTID)
continue;
+ if (key.type == BTRFS_ORPHAN_ITEM_KEY)
+ continue;
if (active_node->current == NULL ||
active_node->current->ino < key.objectid) {
u32 nritems;
u32 blocksize;
int i;
- int ret;
int level;
level = btrfs_header_level(node);
for (i = slot; i < nritems; i++) {
bytenr = btrfs_node_blockptr(node, i);
ptr_gen = btrfs_node_ptr_generation(node, i);
- ret = readahead_tree_block(root, bytenr, blocksize, ptr_gen);
- if (ret)
- break;
+ readahead_tree_block(root, bytenr, blocksize, ptr_gen);
+ }
+}
+
+/*
+ * Check the child node/leaf by the following condition:
+ * 1. the first item key of the node/leaf should be the same with the one
+ * in parent.
+ * 2. block in parent node should match the child node/leaf.
+ * 3. generation of parent node and child's header should be consistent.
+ *
+ * Or the child node/leaf pointed by the key in parent is not valid.
+ *
+ * We hope to check leaf owner too, but since subvol may share leaves,
+ * which makes leaf owner check not so strong, key check should be
+ * sufficient enough for that case.
+ */
+static int check_child_node(struct btrfs_root *root,
+ struct extent_buffer *parent, int slot,
+ struct extent_buffer *child)
+{
+ struct btrfs_key parent_key;
+ struct btrfs_key child_key;
+ int ret = 0;
+
+ btrfs_node_key_to_cpu(parent, &parent_key, slot);
+ if (btrfs_header_level(child) == 0)
+ btrfs_item_key_to_cpu(child, &child_key, 0);
+ else
+ btrfs_node_key_to_cpu(child, &child_key, 0);
+
+ if (memcmp(&parent_key, &child_key, sizeof(parent_key))) {
+ ret = -EINVAL;
+ fprintf(stderr,
+ "Wrong key of child node/leaf, wanted: (%llu, %u, %llu), have: (%llu, %u, %llu)\n",
+ parent_key.objectid, parent_key.type, parent_key.offset,
+ child_key.objectid, child_key.type, child_key.offset);
+ }
+ if (btrfs_header_bytenr(child) != btrfs_node_blockptr(parent, slot)) {
+ ret = -EINVAL;
+ fprintf(stderr, "Wrong block of child node/leaf, wanted: %llu, have: %llu\n",
+ btrfs_node_blockptr(parent, slot),
+ btrfs_header_bytenr(child));
+ }
+ if (btrfs_node_ptr_generation(parent, slot) !=
+ btrfs_header_generation(child)) {
+ ret = -EINVAL;
+ fprintf(stderr, "Wrong generation of child node/leaf, wanted: %llu, have: %llu\n",
+ btrfs_header_generation(child),
+ btrfs_node_ptr_generation(parent, slot));
}
+ return ret;
}
static int walk_down_tree(struct btrfs_root *root, struct btrfs_path *path,
struct walk_control *wc, int *level)
{
+ enum btrfs_tree_block_status status;
u64 bytenr;
u64 ptr_gen;
struct extent_buffer *next;
break;
if (*level == 0) {
ret = process_one_leaf(root, cur, wc);
+ if (ret < 0)
+ err = ret;
break;
}
bytenr = btrfs_node_blockptr(cur, path->slots[*level]);
}
}
+ ret = check_child_node(root, cur, path->slots[*level], next);
+ if (ret) {
+ err = ret;
+ goto out;
+ }
+
+ if (btrfs_is_leaf(next))
+ status = btrfs_check_leaf(root, NULL, next);
+ else
+ status = btrfs_check_node(root, NULL, next);
+ if (status != BTRFS_TREE_BLOCK_CLEAN) {
+ free_extent_buffer(next);
+ err = -EIO;
+ goto out;
+ }
+
*level = *level - 1;
free_extent_buffer(path->nodes[*level]);
path->nodes[*level] = next;
return ret;
}
-static int try_repair_inode(struct btrfs_root *root, struct inode_record *rec)
+static int repair_inode_isize(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct btrfs_path *path,
+ struct inode_record *rec)
{
- struct btrfs_trans_handle *trans;
- struct btrfs_path *path;
struct btrfs_inode_item *ei;
struct btrfs_key key;
int ret;
- /* So far we just fix dir isize wrong */
- if (!(rec->errors & I_ERR_DIR_ISIZE_WRONG))
- return 1;
-
- path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
-
- trans = btrfs_start_transaction(root, 1);
- if (IS_ERR(trans)) {
- btrfs_free_path(path);
- return PTR_ERR(trans);
- }
-
key.objectid = rec->ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = (u64)-1;
printf("reset isize for dir %Lu root %Lu\n", rec->ino,
root->root_key.objectid);
out:
+ btrfs_release_path(path);
+ return ret;
+}
+
+static int repair_inode_orphan_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ struct inode_record *rec)
+{
+ struct btrfs_key key;
+ int ret;
+
+ key.objectid = BTRFS_ORPHAN_OBJECTID;
+ key.type = BTRFS_ORPHAN_ITEM_KEY;
+ key.offset = rec->ino;
+
+ ret = btrfs_insert_empty_item(trans, root, path, &key, 0);
+ btrfs_release_path(path);
+ if (!ret)
+ rec->errors &= ~I_ERR_NO_ORPHAN_ITEM;
+ return ret;
+}
+
+static int add_missing_dir_index(struct btrfs_root *root,
+ struct cache_tree *inode_cache,
+ struct inode_record *rec,
+ struct inode_backref *backref)
+{
+ struct btrfs_path *path;
+ struct btrfs_trans_handle *trans;
+ struct btrfs_dir_item *dir_item;
+ struct extent_buffer *leaf;
+ struct btrfs_key key;
+ struct btrfs_disk_key disk_key;
+ struct inode_record *dir_rec;
+ unsigned long name_ptr;
+ u32 data_size = sizeof(*dir_item) + backref->namelen;
+ int ret;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ btrfs_free_path(path);
+ return PTR_ERR(trans);
+ }
+
+ fprintf(stderr, "repairing missing dir index item for inode %llu\n",
+ (unsigned long long)rec->ino);
+ key.objectid = backref->dir;
+ key.type = BTRFS_DIR_INDEX_KEY;
+ key.offset = backref->index;
+
+ ret = btrfs_insert_empty_item(trans, root, path, &key, data_size);
+ BUG_ON(ret);
+
+ leaf = path->nodes[0];
+ dir_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_dir_item);
+
+ disk_key.objectid = cpu_to_le64(rec->ino);
+ disk_key.type = BTRFS_INODE_ITEM_KEY;
+ disk_key.offset = 0;
+
+ btrfs_set_dir_item_key(leaf, dir_item, &disk_key);
+ btrfs_set_dir_type(leaf, dir_item, imode_to_type(rec->imode));
+ btrfs_set_dir_data_len(leaf, dir_item, 0);
+ btrfs_set_dir_name_len(leaf, dir_item, backref->namelen);
+ name_ptr = (unsigned long)(dir_item + 1);
+ write_extent_buffer(leaf, backref->name, name_ptr, backref->namelen);
+ btrfs_mark_buffer_dirty(leaf);
+ btrfs_free_path(path);
+ btrfs_commit_transaction(trans, root);
+
+ backref->found_dir_index = 1;
+ dir_rec = get_inode_rec(inode_cache, backref->dir, 0);
+ if (!dir_rec)
+ return 0;
+ dir_rec->found_size += backref->namelen;
+ if (dir_rec->found_size == dir_rec->isize &&
+ (dir_rec->errors & I_ERR_DIR_ISIZE_WRONG))
+ dir_rec->errors &= ~I_ERR_DIR_ISIZE_WRONG;
+ if (dir_rec->found_size != dir_rec->isize)
+ dir_rec->errors |= I_ERR_DIR_ISIZE_WRONG;
+
+ return 0;
+}
+
+static int delete_dir_index(struct btrfs_root *root,
+ struct cache_tree *inode_cache,
+ struct inode_record *rec,
+ struct inode_backref *backref)
+{
+ struct btrfs_trans_handle *trans;
+ struct btrfs_dir_item *di;
+ struct btrfs_path *path;
+ int ret = 0;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ btrfs_free_path(path);
+ return PTR_ERR(trans);
+ }
+
+
+ fprintf(stderr, "Deleting bad dir index [%llu,%u,%llu] root %llu\n",
+ (unsigned long long)backref->dir,
+ BTRFS_DIR_INDEX_KEY, (unsigned long long)backref->index,
+ (unsigned long long)root->objectid);
+
+ di = btrfs_lookup_dir_index(trans, root, path, backref->dir,
+ backref->name, backref->namelen,
+ backref->index, -1);
+ if (IS_ERR(di)) {
+ ret = PTR_ERR(di);
+ btrfs_free_path(path);
+ btrfs_commit_transaction(trans, root);
+ if (ret == -ENOENT)
+ return 0;
+ return ret;
+ }
+
+ if (!di)
+ ret = btrfs_del_item(trans, root, path);
+ else
+ ret = btrfs_delete_one_dir_name(trans, root, path, di);
+ BUG_ON(ret);
+ btrfs_free_path(path);
+ btrfs_commit_transaction(trans, root);
+ return ret;
+}
+
+static int repair_inode_backrefs(struct btrfs_root *root,
+ struct inode_record *rec,
+ struct cache_tree *inode_cache,
+ int delete)
+{
+ struct inode_backref *tmp, *backref;
+ u64 root_dirid = btrfs_root_dirid(&root->root_item);
+ int ret = 0;
+ int repaired = 0;
+
+ list_for_each_entry_safe(backref, tmp, &rec->backrefs, list) {
+ /* Index 0 for root dir's are special, don't mess with it */
+ if (rec->ino == root_dirid && backref->index == 0)
+ continue;
+
+ if (delete &&
+ ((backref->found_dir_index && !backref->found_inode_ref) ||
+ (backref->found_dir_index && backref->found_inode_ref &&
+ (backref->errors & REF_ERR_INDEX_UNMATCH)))) {
+ ret = delete_dir_index(root, inode_cache, rec, backref);
+ if (ret)
+ break;
+ repaired++;
+ list_del(&backref->list);
+ free(backref);
+ }
+
+ if (!delete && !backref->found_dir_index &&
+ backref->found_dir_item && backref->found_inode_ref) {
+ ret = add_missing_dir_index(root, inode_cache, rec,
+ backref);
+ if (ret)
+ break;
+ repaired++;
+ if (backref->found_dir_item &&
+ backref->found_dir_index &&
+ backref->found_dir_index) {
+ if (!backref->errors &&
+ backref->found_inode_ref) {
+ list_del(&backref->list);
+ free(backref);
+ }
+ }
+ }
+
+ }
+ return ret ? ret : repaired;
+}
+
+static int try_repair_inode(struct btrfs_root *root, struct inode_record *rec)
+{
+ struct btrfs_trans_handle *trans;
+ struct btrfs_path *path;
+ int ret = 0;
+
+ if (!(rec->errors & (I_ERR_DIR_ISIZE_WRONG | I_ERR_NO_ORPHAN_ITEM)))
+ return rec->errors;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ btrfs_free_path(path);
+ return PTR_ERR(trans);
+ }
+
+ if (rec->errors & I_ERR_DIR_ISIZE_WRONG)
+ ret = repair_inode_isize(trans, root, path, rec);
+ if (!ret && rec->errors & I_ERR_NO_ORPHAN_ITEM)
+ ret = repair_inode_orphan_item(trans, root, path, rec);
btrfs_commit_transaction(trans, root);
btrfs_free_path(path);
return ret;
struct ptr_node *node;
struct inode_record *rec;
struct inode_backref *backref;
+ int stage = 0;
int ret;
+ int err = 0;
u64 error = 0;
u64 root_dirid = btrfs_root_dirid(&root->root_item);
return 0;
}
+ /*
+ * We need to repair backrefs first because we could change some of the
+ * errors in the inode recs.
+ *
+ * We also need to go through and delete invalid backrefs first and then
+ * add the correct ones second. We do this because we may get EEXIST
+ * when adding back the correct index because we hadn't yet deleted the
+ * invalid index.
+ *
+ * For example, if we were missing a dir index then the directories
+ * isize would be wrong, so if we fixed the isize to what we thought it
+ * would be and then fixed the backref we'd still have a invalid fs, so
+ * we need to add back the dir index and then check to see if the isize
+ * is still wrong.
+ */
+ while (stage < 3) {
+ stage++;
+ if (stage == 3 && !err)
+ break;
+
+ cache = search_cache_extent(inode_cache, 0);
+ while (repair && cache) {
+ node = container_of(cache, struct ptr_node, cache);
+ rec = node->data;
+ cache = next_cache_extent(cache);
+
+ /* Need to free everything up and rescan */
+ if (stage == 3) {
+ remove_cache_extent(inode_cache, &node->cache);
+ free(node);
+ free_inode_rec(rec);
+ continue;
+ }
+
+ if (list_empty(&rec->backrefs))
+ continue;
+
+ ret = repair_inode_backrefs(root, rec, inode_cache,
+ stage == 1);
+ if (ret < 0) {
+ err = ret;
+ stage = 2;
+ break;
+ } if (ret > 0) {
+ err = -EAGAIN;
+ }
+ }
+ }
+ if (err)
+ return err;
+
rec = get_inode_rec(inode_cache, root_dirid, 0);
if (rec) {
ret = check_root_dir(rec);
rec->errors |= I_ERR_NO_INODE_ITEM;
if (rec->found_link != rec->nlink)
rec->errors |= I_ERR_LINK_COUNT_WRONG;
- fprintf(stderr, "root %llu inode %llu errors %x",
- (unsigned long long) root->root_key.objectid,
- (unsigned long long) rec->ino, rec->errors);
- print_inode_error(rec->errors);
+ print_inode_error(root, rec);
list_for_each_entry(backref, &rec->backrefs, list) {
if (!backref->found_dir_item)
backref->errors |= REF_ERR_NO_DIR_ITEM;
if (!backref->found_inode_ref)
backref->errors |= REF_ERR_NO_INODE_REF;
fprintf(stderr, "\tunresolved ref dir %llu index %llu"
- " namelen %u name %s filetype %d error %x",
+ " namelen %u name %s filetype %d errors %x",
(unsigned long long)backref->dir,
(unsigned long long)backref->index,
backref->namelen, backref->name,
struct ptr_node *node;
struct inode_record *rec;
struct inode_backref *backref;
+ int ret = 0;
if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
free_inode_recs_tree(src_cache);
remove_cache_extent(src_cache, &node->cache);
free(node);
- if (!is_child_root(root, root->objectid, rec->ino))
+ ret = is_child_root(root, root->objectid, rec->ino);
+ if (ret < 0)
+ break;
+ else if (ret == 0)
goto skip;
list_for_each_entry(backref, &rec->backrefs, list) {
skip:
free_inode_rec(rec);
}
+ if (ret < 0)
+ return ret;
return 0;
}
if (!backref->errors && rec->found_root_item)
continue;
fprintf(stderr, "\tunresolved ref root %llu dir %llu"
- " index %llu namelen %u name %s error %x\n",
+ " index %llu namelen %u name %s errors %x\n",
(unsigned long long)backref->ref_root,
(unsigned long long)backref->dir,
(unsigned long long)backref->index,
backref->namelen, backref->name,
backref->errors);
+ print_ref_error(backref->errors);
}
}
return errors > 0 ? 1 : 0;
struct walk_control *wc)
{
int ret = 0;
+ int err = 0;
int wret;
int level;
struct btrfs_path path;
struct shared_node root_node;
struct root_record *rec;
struct btrfs_root_item *root_item = &root->root_item;
+ enum btrfs_tree_block_status status;
if (root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID) {
rec = get_root_rec(root_cache, root->root_key.objectid);
wc->active_node = level;
wc->root_level = level;
+ /* We may not have checked the root block, lets do that now */
+ if (btrfs_is_leaf(root->node))
+ status = btrfs_check_leaf(root, NULL, root->node);
+ else
+ status = btrfs_check_node(root, NULL, root->node);
+ if (status != BTRFS_TREE_BLOCK_CLEAN)
+ return -EIO;
+
if (btrfs_root_refs(root_item) > 0 ||
btrfs_disk_key_objectid(&root_item->drop_progress) == 0) {
path.nodes[level] = root->node;
level = root_item->drop_level;
path.lowest_level = level;
wret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
- BUG_ON(wret < 0);
+ if (wret < 0)
+ goto skip_walking;
btrfs_node_key(path.nodes[level], &found_key,
path.slots[level]);
WARN_ON(memcmp(&found_key, &root_item->drop_progress,
if (wret != 0)
break;
}
+skip_walking:
btrfs_release_path(&path);
- merge_root_recs(root, &root_node.root_cache, root_cache);
+ err = merge_root_recs(root, &root_node.root_cache, root_cache);
+ if (err < 0)
+ ret = err;
if (root_node.current) {
root_node.current->checked = 1;
root_node.current);
}
- ret = check_inode_recs(root, &root_node.inode_cache);
+ err = check_inode_recs(root, &root_node.inode_cache);
+ if (!ret)
+ ret = err;
return ret;
}
static int fs_root_objectid(u64 objectid)
{
- if (objectid == BTRFS_FS_TREE_OBJECTID ||
- objectid == BTRFS_TREE_RELOC_OBJECTID ||
- objectid == BTRFS_DATA_RELOC_TREE_OBJECTID ||
- (objectid >= BTRFS_FIRST_FREE_OBJECTID &&
- objectid <= BTRFS_LAST_FREE_OBJECTID))
+ if (objectid == BTRFS_TREE_RELOC_OBJECTID ||
+ objectid == BTRFS_DATA_RELOC_TREE_OBJECTID)
return 1;
- return 0;
+ return is_fstree(objectid);
}
static int check_fs_roots(struct btrfs_root *root,
struct btrfs_path path;
struct btrfs_key key;
struct walk_control wc;
- struct extent_buffer *leaf;
+ struct extent_buffer *leaf, *tree_node;
struct btrfs_root *tmp_root;
struct btrfs_root *tree_root = root->fs_info->tree_root;
int ret;
cache_tree_init(&wc.shared);
btrfs_init_path(&path);
+again:
key.offset = 0;
key.objectid = 0;
key.type = BTRFS_ROOT_ITEM_KEY;
ret = btrfs_search_slot(NULL, tree_root, &key, &path, 0, 0);
- BUG_ON(ret < 0);
+ if (ret < 0) {
+ err = 1;
+ goto out;
+ }
+ tree_node = tree_root->node;
while (1) {
+ if (tree_node != tree_root->node) {
+ free_root_recs_tree(root_cache);
+ btrfs_release_path(&path);
+ goto again;
+ }
leaf = path.nodes[0];
if (path.slots[0] >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(tree_root, &path);
- if (ret != 0)
+ if (ret) {
+ if (ret < 0)
+ err = 1;
break;
+ }
leaf = path.nodes[0];
}
btrfs_item_key_to_cpu(leaf, &key, path.slots[0]);
if (key.type == BTRFS_ROOT_ITEM_KEY &&
fs_root_objectid(key.objectid)) {
- tmp_root = btrfs_read_fs_root_no_cache(root->fs_info,
- &key);
+ if (key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
+ tmp_root = btrfs_read_fs_root_no_cache(
+ root->fs_info, &key);
+ } else {
+ key.offset = (u64)-1;
+ tmp_root = btrfs_read_fs_root(
+ root->fs_info, &key);
+ }
if (IS_ERR(tmp_root)) {
err = 1;
goto next;
}
ret = check_fs_root(tmp_root, root_cache, &wc);
+ if (ret == -EAGAIN) {
+ free_root_recs_tree(root_cache);
+ btrfs_release_path(&path);
+ goto again;
+ }
if (ret)
err = 1;
- btrfs_free_fs_root(tmp_root);
+ if (key.objectid == BTRFS_TREE_RELOC_OBJECTID)
+ btrfs_free_fs_root(tmp_root);
} else if (key.type == BTRFS_ROOT_REF_KEY ||
key.type == BTRFS_ROOT_BACKREF_KEY) {
process_root_ref(leaf, path.slots[0], &key,
next:
path.slots[0]++;
}
+out:
btrfs_release_path(&path);
-
+ if (err)
+ free_extent_cache_tree(&wc.shared);
if (!cache_tree_empty(&wc.shared))
fprintf(stderr, "warning line %d\n", __LINE__);
return btrfs_add_corrupt_extent_record(info, &key, start, len, 0);
}
-static int check_block(struct btrfs_root *root,
+static int swap_values(struct btrfs_root *root, struct btrfs_path *path,
+ struct extent_buffer *buf, int slot)
+{
+ if (btrfs_header_level(buf)) {
+ struct btrfs_key_ptr ptr1, ptr2;
+
+ read_extent_buffer(buf, &ptr1, btrfs_node_key_ptr_offset(slot),
+ sizeof(struct btrfs_key_ptr));
+ read_extent_buffer(buf, &ptr2,
+ btrfs_node_key_ptr_offset(slot + 1),
+ sizeof(struct btrfs_key_ptr));
+ write_extent_buffer(buf, &ptr1,
+ btrfs_node_key_ptr_offset(slot + 1),
+ sizeof(struct btrfs_key_ptr));
+ write_extent_buffer(buf, &ptr2,
+ btrfs_node_key_ptr_offset(slot),
+ sizeof(struct btrfs_key_ptr));
+ if (slot == 0) {
+ struct btrfs_disk_key key;
+ btrfs_node_key(buf, &key, 0);
+ btrfs_fixup_low_keys(root, path, &key,
+ btrfs_header_level(buf) + 1);
+ }
+ } else {
+ struct btrfs_item *item1, *item2;
+ struct btrfs_key k1, k2;
+ char *item1_data, *item2_data;
+ u32 item1_offset, item2_offset, item1_size, item2_size;
+
+ item1 = btrfs_item_nr(slot);
+ item2 = btrfs_item_nr(slot + 1);
+ btrfs_item_key_to_cpu(buf, &k1, slot);
+ btrfs_item_key_to_cpu(buf, &k2, slot + 1);
+ item1_offset = btrfs_item_offset(buf, item1);
+ item2_offset = btrfs_item_offset(buf, item2);
+ item1_size = btrfs_item_size(buf, item1);
+ item2_size = btrfs_item_size(buf, item2);
+
+ item1_data = malloc(item1_size);
+ if (!item1_data)
+ return -ENOMEM;
+ item2_data = malloc(item2_size);
+ if (!item2_data) {
+ free(item1_data);
+ return -ENOMEM;
+ }
+
+ read_extent_buffer(buf, item1_data, item1_offset, item1_size);
+ read_extent_buffer(buf, item2_data, item2_offset, item2_size);
+
+ write_extent_buffer(buf, item1_data, item2_offset, item2_size);
+ write_extent_buffer(buf, item2_data, item1_offset, item1_size);
+ free(item1_data);
+ free(item2_data);
+
+ btrfs_set_item_offset(buf, item1, item2_offset);
+ btrfs_set_item_offset(buf, item2, item1_offset);
+ btrfs_set_item_size(buf, item1, item2_size);
+ btrfs_set_item_size(buf, item2, item1_size);
+
+ path->slots[0] = slot;
+ btrfs_set_item_key_unsafe(root, path, &k2);
+ path->slots[0] = slot + 1;
+ btrfs_set_item_key_unsafe(root, path, &k1);
+ }
+ return 0;
+}
+
+static int fix_key_order(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path)
+{
+ struct extent_buffer *buf;
+ struct btrfs_key k1, k2;
+ int i;
+ int level = path->lowest_level;
+ int ret;
+
+ buf = path->nodes[level];
+ for (i = 0; i < btrfs_header_nritems(buf) - 1; i++) {
+ if (level) {
+ btrfs_node_key_to_cpu(buf, &k1, i);
+ btrfs_node_key_to_cpu(buf, &k2, i + 1);
+ } else {
+ btrfs_item_key_to_cpu(buf, &k1, i);
+ btrfs_item_key_to_cpu(buf, &k2, i + 1);
+ }
+ if (btrfs_comp_cpu_keys(&k1, &k2) < 0)
+ continue;
+ ret = swap_values(root, path, buf, i);
+ if (ret)
+ break;
+ btrfs_mark_buffer_dirty(buf);
+ i = 0;
+ }
+ return ret;
+}
+
+static int delete_bogus_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ struct extent_buffer *buf, int slot)
+{
+ struct btrfs_key key;
+ int nritems = btrfs_header_nritems(buf);
+
+ btrfs_item_key_to_cpu(buf, &key, slot);
+
+ /* These are all the keys we can deal with missing. */
+ if (key.type != BTRFS_DIR_INDEX_KEY &&
+ key.type != BTRFS_EXTENT_ITEM_KEY &&
+ key.type != BTRFS_METADATA_ITEM_KEY &&
+ key.type != BTRFS_TREE_BLOCK_REF_KEY &&
+ key.type != BTRFS_EXTENT_DATA_REF_KEY)
+ return -1;
+
+ printf("Deleting bogus item [%llu,%u,%llu] at slot %d on block %llu\n",
+ (unsigned long long)key.objectid, key.type,
+ (unsigned long long)key.offset, slot, buf->start);
+ memmove_extent_buffer(buf, btrfs_item_nr_offset(slot),
+ btrfs_item_nr_offset(slot + 1),
+ sizeof(struct btrfs_item) *
+ (nritems - slot - 1));
+ btrfs_set_header_nritems(buf, nritems - 1);
+ if (slot == 0) {
+ struct btrfs_disk_key disk_key;
+
+ btrfs_item_key(buf, &disk_key, 0);
+ btrfs_fixup_low_keys(root, path, &disk_key, 1);
+ }
+ btrfs_mark_buffer_dirty(buf);
+ return 0;
+}
+
+static int fix_item_offset(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path)
+{
+ struct extent_buffer *buf;
+ int i;
+ int ret = 0;
+
+ /* We should only get this for leaves */
+ BUG_ON(path->lowest_level);
+ buf = path->nodes[0];
+again:
+ for (i = 0; i < btrfs_header_nritems(buf); i++) {
+ unsigned int shift = 0, offset;
+
+ if (i == 0 && btrfs_item_end_nr(buf, i) !=
+ BTRFS_LEAF_DATA_SIZE(root)) {
+ if (btrfs_item_end_nr(buf, i) >
+ BTRFS_LEAF_DATA_SIZE(root)) {
+ ret = delete_bogus_item(trans, root, path,
+ buf, i);
+ if (!ret)
+ goto again;
+ fprintf(stderr, "item is off the end of the "
+ "leaf, can't fix\n");
+ ret = -EIO;
+ break;
+ }
+ shift = BTRFS_LEAF_DATA_SIZE(root) -
+ btrfs_item_end_nr(buf, i);
+ } else if (i > 0 && btrfs_item_end_nr(buf, i) !=
+ btrfs_item_offset_nr(buf, i - 1)) {
+ if (btrfs_item_end_nr(buf, i) >
+ btrfs_item_offset_nr(buf, i - 1)) {
+ ret = delete_bogus_item(trans, root, path,
+ buf, i);
+ if (!ret)
+ goto again;
+ fprintf(stderr, "items overlap, can't fix\n");
+ ret = -EIO;
+ break;
+ }
+ shift = btrfs_item_offset_nr(buf, i - 1) -
+ btrfs_item_end_nr(buf, i);
+ }
+ if (!shift)
+ continue;
+
+ printf("Shifting item nr %d by %u bytes in block %llu\n",
+ i, shift, (unsigned long long)buf->start);
+ offset = btrfs_item_offset_nr(buf, i);
+ memmove_extent_buffer(buf,
+ btrfs_leaf_data(buf) + offset + shift,
+ btrfs_leaf_data(buf) + offset,
+ btrfs_item_size_nr(buf, i));
+ btrfs_set_item_offset(buf, btrfs_item_nr(i),
+ offset + shift);
+ btrfs_mark_buffer_dirty(buf);
+ }
+
+ /*
+ * We may have moved things, in which case we want to exit so we don't
+ * write those changes out. Once we have proper abort functionality in
+ * progs this can be changed to something nicer.
+ */
+ BUG_ON(ret);
+ return ret;
+}
+
+/*
+ * Attempt to fix basic block failures. If we can't fix it for whatever reason
+ * then just return -EIO.
+ */
+static int try_to_fix_bad_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct extent_buffer *buf,
+ enum btrfs_tree_block_status status)
+{
+ struct ulist *roots;
+ struct ulist_node *node;
+ struct btrfs_root *search_root;
+ struct btrfs_path *path;
+ struct ulist_iterator iter;
+ struct btrfs_key root_key, key;
+ int ret;
+
+ if (status != BTRFS_TREE_BLOCK_BAD_KEY_ORDER &&
+ status != BTRFS_TREE_BLOCK_INVALID_OFFSETS)
+ return -EIO;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -EIO;
+
+ ret = btrfs_find_all_roots(trans, root->fs_info, buf->start,
+ 0, &roots);
+ if (ret) {
+ btrfs_free_path(path);
+ return -EIO;
+ }
+
+ ULIST_ITER_INIT(&iter);
+ while ((node = ulist_next(roots, &iter))) {
+ root_key.objectid = node->val;
+ root_key.type = BTRFS_ROOT_ITEM_KEY;
+ root_key.offset = (u64)-1;
+
+ search_root = btrfs_read_fs_root(root->fs_info, &root_key);
+ if (IS_ERR(root)) {
+ ret = -EIO;
+ break;
+ }
+
+ record_root_in_trans(trans, search_root);
+
+ path->lowest_level = btrfs_header_level(buf);
+ path->skip_check_block = 1;
+ if (path->lowest_level)
+ btrfs_node_key_to_cpu(buf, &key, 0);
+ else
+ btrfs_item_key_to_cpu(buf, &key, 0);
+ ret = btrfs_search_slot(trans, search_root, &key, path, 0, 1);
+ if (ret) {
+ ret = -EIO;
+ break;
+ }
+ if (status == BTRFS_TREE_BLOCK_BAD_KEY_ORDER)
+ ret = fix_key_order(trans, search_root, path);
+ else if (status == BTRFS_TREE_BLOCK_INVALID_OFFSETS)
+ ret = fix_item_offset(trans, search_root, path);
+ if (ret)
+ break;
+ btrfs_release_path(path);
+ }
+ ulist_free(roots);
+ btrfs_free_path(path);
+ return ret;
+}
+
+static int check_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
struct cache_tree *extent_cache,
struct extent_buffer *buf, u64 flags)
{
struct extent_record *rec;
struct cache_extent *cache;
struct btrfs_key key;
- int ret = 1;
+ enum btrfs_tree_block_status status;
+ int ret = 0;
int level;
cache = lookup_cache_extent(extent_cache, buf->start, buf->len);
rec->info_level = level;
if (btrfs_is_leaf(buf))
- ret = btrfs_check_leaf(root, &rec->parent_key, buf);
+ status = btrfs_check_leaf(root, &rec->parent_key, buf);
else
- ret = btrfs_check_node(root, &rec->parent_key, buf);
-
- if (ret) {
- fprintf(stderr, "bad block %llu\n",
- (unsigned long long)buf->start);
+ status = btrfs_check_node(root, &rec->parent_key, buf);
+
+ if (status != BTRFS_TREE_BLOCK_CLEAN) {
+ if (repair)
+ status = try_to_fix_bad_block(trans, root, buf,
+ status);
+ if (status != BTRFS_TREE_BLOCK_CLEAN) {
+ ret = -EIO;
+ fprintf(stderr, "bad block %llu\n",
+ (unsigned long long)buf->start);
+ } else {
+ /*
+ * Signal to callers we need to start the scan over
+ * again since we'll have cow'ed blocks.
+ */
+ ret = -EAGAIN;
+ }
} else {
rec->content_checked = 1;
if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF)
}
static int add_extent_rec(struct cache_tree *extent_cache,
- struct btrfs_key *parent_key,
+ struct btrfs_key *parent_key, u64 parent_gen,
u64 start, u64 nr, u64 extent_item_refs,
int is_root, int inc_ref, int set_checked,
int metadata, int extent_rec, u64 max_size)
if (parent_key)
btrfs_cpu_key_to_disk(&rec->parent_key, parent_key);
+ if (parent_gen)
+ rec->parent_generation = parent_gen;
if (rec->max_size < max_size)
rec->max_size = max_size;
rec->start = start;
rec->max_size = max_size;
rec->nr = max(nr, max_size);
- rec->found_rec = extent_rec;
+ rec->found_rec = !!extent_rec;
rec->content_checked = 0;
rec->owner_ref_checked = 0;
rec->num_duplicates = 0;
else
memset(&rec->parent_key, 0, sizeof(*parent_key));
+ if (parent_gen)
+ rec->parent_generation = parent_gen;
+ else
+ rec->parent_generation = 0;
+
rec->cache.start = start;
rec->cache.size = nr;
ret = insert_cache_extent(extent_cache, &rec->cache);
cache = lookup_cache_extent(extent_cache, bytenr, 1);
if (!cache) {
- add_extent_rec(extent_cache, NULL, bytenr,
+ add_extent_rec(extent_cache, NULL, 0, bytenr,
1, 0, 0, 0, 0, 1, 0, 0);
cache = lookup_cache_extent(extent_cache, bytenr, 1);
if (!cache)
}
back->node.found_extent_tree = 1;
}
+ maybe_free_extent_rec(extent_cache, rec);
return 0;
}
cache = lookup_cache_extent(extent_cache, bytenr, 1);
if (!cache) {
- add_extent_rec(extent_cache, NULL, bytenr, 1, 0, 0, 0, 0,
+ add_extent_rec(extent_cache, NULL, 0, bytenr, 1, 0, 0, 0, 0,
0, 0, max_size);
cache = lookup_cache_extent(extent_cache, bytenr, 1);
if (!cache)
} else {
if (back->node.found_extent_tree) {
fprintf(stderr, "Extent back ref already exists "
- "for %llu parent %llu root %llu"
+ "for %llu parent %llu root %llu "
"owner %llu offset %llu num_refs %lu\n",
(unsigned long long)bytenr,
(unsigned long long)parent,
back->num_refs = num_refs;
back->node.found_extent_tree = 1;
}
+ maybe_free_extent_rec(extent_cache, rec);
return 0;
}
cache = search_cache_extent(reada, 0);
if (cache) {
bits[0].start = cache->start;
- bits[1].size = cache->size;
+ bits[0].size = cache->size;
*reada_bits = 1;
return 1;
}
struct chunk_record *rec;
rec = container_of(cache, struct chunk_record, cache);
+ list_del_init(&rec->list);
+ list_del_init(&rec->dextents);
free(rec);
}
struct block_group_record *rec;
rec = container_of(cache, struct block_group_record, cache);
+ list_del_init(&rec->list);
free(rec);
}
struct device_extent_record *rec;
rec = container_of(cache, struct device_extent_record, cache);
+ if (!list_empty(&rec->chunk_list))
+ list_del_init(&rec->chunk_list);
+ if (!list_empty(&rec->device_list))
+ list_del_init(&rec->device_list);
free(rec);
}
#else
BUG();
#endif
- return add_extent_rec(extent_cache, NULL, key.objectid,
+ return add_extent_rec(extent_cache, NULL, 0, key.objectid,
num_bytes, refs, 0, 0, 0, metadata, 1,
num_bytes);
}
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
refs = btrfs_extent_refs(eb, ei);
- add_extent_rec(extent_cache, NULL, key.objectid, num_bytes,
+ add_extent_rec(extent_cache, NULL, 0, key.objectid, num_bytes,
refs, 0, 0, 0, metadata, 1, num_bytes);
ptr = (unsigned long)(ei + 1);
int ret;
int error = 0;
- if (btrfs_super_generation(root->fs_info->super_copy) !=
+ if (btrfs_super_cache_generation(root->fs_info->super_copy) != -1ULL &&
+ btrfs_super_generation(root->fs_info->super_copy) !=
btrfs_super_cache_generation(root->fs_info->super_copy)) {
printf("cache and super generation don't match, space cache "
"will be invalidated\n");
return error ? -EINVAL : 0;
}
+static int read_extent_data(struct btrfs_root *root, char *data,
+ u64 logical, u64 *len, int mirror)
+{
+ u64 offset = 0;
+ struct btrfs_multi_bio *multi = NULL;
+ struct btrfs_fs_info *info = root->fs_info;
+ struct btrfs_device *device;
+ int ret = 0;
+ u64 max_len = *len;
+
+ ret = btrfs_map_block(&info->mapping_tree, READ, logical, len,
+ &multi, mirror, NULL);
+ if (ret) {
+ fprintf(stderr, "Couldn't map the block %llu\n",
+ logical + offset);
+ goto err;
+ }
+ device = multi->stripes[0].dev;
+
+ if (device->fd == 0)
+ goto err;
+ if (*len > max_len)
+ *len = max_len;
+
+ ret = pread64(device->fd, data, *len, multi->stripes[0].physical);
+ if (ret != *len)
+ ret = -EIO;
+ else
+ ret = 0;
+err:
+ kfree(multi);
+ return ret;
+}
+
+static int check_extent_csums(struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes, unsigned long leaf_offset,
+ struct extent_buffer *eb) {
+
+ u64 offset = 0;
+ u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ char *data;
+ unsigned long csum_offset;
+ u32 csum;
+ u32 csum_expected;
+ u64 read_len;
+ u64 data_checked = 0;
+ u64 tmp;
+ int ret = 0;
+ int mirror;
+ int num_copies;
+
+ if (num_bytes % root->sectorsize)
+ return -EINVAL;
+
+ data = malloc(num_bytes);
+ if (!data)
+ return -ENOMEM;
+
+ while (offset < num_bytes) {
+ mirror = 0;
+again:
+ read_len = num_bytes - offset;
+ /* read as much space once a time */
+ ret = read_extent_data(root, data + offset,
+ bytenr + offset, &read_len, mirror);
+ if (ret)
+ goto out;
+ data_checked = 0;
+ /* verify every 4k data's checksum */
+ while (data_checked < read_len) {
+ csum = ~(u32)0;
+ tmp = offset + data_checked;
+
+ csum = btrfs_csum_data(NULL, (char *)data + tmp,
+ csum, root->sectorsize);
+ btrfs_csum_final(csum, (char *)&csum);
+
+ csum_offset = leaf_offset +
+ tmp / root->sectorsize * csum_size;
+ read_extent_buffer(eb, (char *)&csum_expected,
+ csum_offset, csum_size);
+ /* try another mirror */
+ if (csum != csum_expected) {
+ fprintf(stderr, "mirror %d bytenr %llu csum %u expected csum %u\n",
+ mirror, bytenr + tmp,
+ csum, csum_expected);
+ num_copies = btrfs_num_copies(
+ &root->fs_info->mapping_tree,
+ bytenr, num_bytes);
+ if (mirror < num_copies - 1) {
+ mirror += 1;
+ goto again;
+ }
+ }
+ data_checked += root->sectorsize;
+ }
+ offset += read_len;
+ }
+out:
+ free(data);
+ return ret;
+}
+
static int check_extent_exists(struct btrfs_root *root, u64 bytenr,
u64 num_bytes)
{
key.objectid = bytenr;
key.type = BTRFS_EXTENT_ITEM_KEY;
- key.offset = 0;
-
+ key.offset = (u64)-1;
again:
ret = btrfs_search_slot(NULL, root->fs_info->extent_root, &key, path,
btrfs_free_path(path);
return ret;
} else if (ret) {
- if (path->slots[0])
+ if (path->slots[0] > 0) {
path->slots[0]--;
- else
- btrfs_prev_leaf(root, path);
+ } else {
+ ret = btrfs_prev_leaf(root, path);
+ if (ret < 0) {
+ goto out;
+ } else if (ret > 0) {
+ ret = 0;
+ goto out;
+ }
+ }
}
btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
* bytenr, so walk back one more just in case. Dear future traveler,
* first congrats on mastering time travel. Now if it's not too much
* trouble could you go back to 2006 and tell Chris to make the
- * BLOCK_GROUP_ITEM_KEY lower than the EXTENT_ITEM_KEY please?
+ * BLOCK_GROUP_ITEM_KEY (and BTRFS_*_REF_KEY) lower than the
+ * EXTENT_ITEM_KEY please?
*/
- if (key.type == BTRFS_BLOCK_GROUP_ITEM_KEY) {
- if (path->slots[0])
+ while (key.type > BTRFS_EXTENT_ITEM_KEY) {
+ if (path->slots[0] > 0) {
path->slots[0]--;
- else
- btrfs_prev_leaf(root, path);
+ } else {
+ ret = btrfs_prev_leaf(root, path);
+ if (ret < 0) {
+ goto out;
+ } else if (ret > 0) {
+ ret = 0;
+ goto out;
+ }
+ }
+ btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
}
while (num_bytes) {
}
ret = 0;
- if (num_bytes) {
+out:
+ if (num_bytes && !ret) {
fprintf(stderr, "There are no extents for csum range "
"%Lu-%Lu\n", bytenr, bytenr+num_bytes);
ret = 1;
u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
int errors = 0;
int ret;
+ u64 data_len;
+ unsigned long leaf_offset;
root = root->fs_info->csum_root;
+ if (!extent_buffer_uptodate(root->node)) {
+ fprintf(stderr, "No valid csum tree found\n");
+ return -ENOENT;
+ }
key.objectid = BTRFS_EXTENT_CSUM_OBJECTID;
key.type = BTRFS_EXTENT_CSUM_KEY;
continue;
}
+ data_len = (btrfs_item_size_nr(leaf, path->slots[0]) /
+ csum_size) * root->sectorsize;
+ if (!check_data_csum)
+ goto skip_csum_check;
+ leaf_offset = btrfs_item_ptr_offset(leaf, path->slots[0]);
+ ret = check_extent_csums(root, key.offset, data_len,
+ leaf_offset, leaf);
+ if (ret)
+ break;
+skip_csum_check:
if (!num_bytes) {
offset = key.offset;
} else if (key.offset != offset + num_bytes) {
offset = key.offset;
num_bytes = 0;
}
-
- num_bytes += (btrfs_item_size_nr(leaf, path->slots[0]) /
- csum_size) * root->sectorsize;
+ num_bytes += data_len;
path->slots[0]++;
}
return errors;
}
-static int run_next_block(struct btrfs_root *root,
+static int is_dropped_key(struct btrfs_key *key,
+ struct btrfs_key *drop_key) {
+ if (key->objectid < drop_key->objectid)
+ return 1;
+ else if (key->objectid == drop_key->objectid) {
+ if (key->type < drop_key->type)
+ return 1;
+ else if (key->type == drop_key->type) {
+ if (key->offset < drop_key->offset)
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int run_next_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
struct block_info *bits,
int bits_nr,
u64 *last,
struct cache_tree *chunk_cache,
struct rb_root *dev_cache,
struct block_group_tree *block_group_cache,
- struct device_extent_tree *dev_extent_cache)
+ struct device_extent_tree *dev_extent_cache,
+ struct btrfs_root_item *ri)
{
struct extent_buffer *buf;
u64 bytenr;
u64 owner;
u64 flags;
u64 ptr;
- int ret;
+ u64 gen = 0;
+ int ret = 0;
int i;
int nritems;
struct btrfs_key key;
remove_cache_extent(nodes, cache);
free(cache);
}
- cache = lookup_cache_extent(seen, bytenr, size);
+ cache = lookup_cache_extent(extent_cache, bytenr, size);
if (cache) {
- remove_cache_extent(seen, cache);
- free(cache);
+ struct extent_record *rec;
+
+ rec = container_of(cache, struct extent_record, cache);
+ gen = rec->parent_generation;
}
/* fixme, get the real parent transid */
- buf = read_tree_block(root, bytenr, size, 0);
+ buf = read_tree_block(root, bytenr, size, gen);
if (!extent_buffer_uptodate(buf)) {
record_bad_block_io(root->fs_info,
extent_cache, bytenr, size);
nritems = btrfs_header_nritems(buf);
- ret = btrfs_lookup_extent_info(NULL, root, bytenr,
+ /*
+ * FIXME, this only works only if we don't have any full
+ * backref mode.
+ */
+ if (!init_extent_tree) {
+ ret = btrfs_lookup_extent_info(NULL, root, bytenr,
btrfs_header_level(buf), 1, NULL,
&flags);
- if (ret < 0)
- flags = BTRFS_BLOCK_FLAG_FULL_BACKREF;
+ if (ret < 0)
+ flags = 0;
+ } else {
+ flags = 0;
+ }
if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
parent = bytenr;
owner = btrfs_header_owner(buf);
}
- ret = check_block(root, extent_cache, buf, flags);
+ ret = check_block(trans, root, extent_cache, buf, flags);
if (ret)
goto out;
0, root->sectorsize);
continue;
}
+ if (key.type == BTRFS_ORPHAN_ITEM_KEY) {
+ struct bad_item *bad;
+
+ if (key.objectid == BTRFS_ORPHAN_OBJECTID)
+ continue;
+ if (!owner)
+ continue;
+ bad = malloc(sizeof(struct bad_item));
+ if (!bad)
+ continue;
+ INIT_LIST_HEAD(&bad->list);
+ memcpy(&bad->key, &key,
+ sizeof(struct btrfs_key));
+ bad->root_id = owner;
+ list_add_tail(&bad->list, &delete_items);
+ continue;
+ }
if (key.type != BTRFS_EXTENT_DATA_KEY)
continue;
fi = btrfs_item_ptr(buf, i,
parent, owner, key.objectid, key.offset -
btrfs_file_extent_offset(buf, fi), 1, 1,
btrfs_file_extent_disk_num_bytes(buf, fi));
- BUG_ON(ret);
}
} else {
int level;
ptr = btrfs_node_blockptr(buf, i);
size = btrfs_level_size(root, level - 1);
btrfs_node_key_to_cpu(buf, &key, i);
+ if (ri != NULL) {
+ struct btrfs_key drop_key;
+ btrfs_disk_key_to_cpu(&drop_key,
+ &ri->drop_progress);
+ if ((level == ri->drop_level)
+ && is_dropped_key(&key, &drop_key)) {
+ continue;
+ }
+ }
ret = add_extent_rec(extent_cache, &key,
+ btrfs_node_ptr_generation(buf, i),
ptr, size, 0, 0, 1, 0, 1, 0,
size);
BUG_ON(ret);
found_old_backref = 1;
out:
free_extent_buffer(buf);
- return 0;
+ return ret;
}
static int add_root_to_pending(struct extent_buffer *buf,
add_pending(nodes, seen, buf->start, buf->len);
else
add_pending(pending, seen, buf->start, buf->len);
- add_extent_rec(extent_cache, NULL, buf->start, buf->len,
+ add_extent_rec(extent_cache, NULL, 0, buf->start, buf->len,
0, 1, 1, 0, 1, 0, buf->len);
if (root_key->objectid == BTRFS_TREE_RELOC_OBJECTID ||
* Have to make sure that this root gets updated when we commit the
* transaction
*/
- root->track_dirty = 1;
- if (root->last_trans != trans->transid) {
- root->last_trans = trans->transid;
- root->commit_root = root->node;
- extent_buffer_get(root->node);
- }
+ record_root_in_trans(trans, root);
/*
* Ok we have the key of the file extent we want to fix, now we can cow
return 0;
list_for_each_entry(back, &rec->backrefs, list) {
+ if (back->full_backref || !back->is_data)
+ continue;
+
dback = (struct data_backref *)back;
+
/*
* We only pay attention to backrefs that we found a real
* backref for.
*/
if (dback->found_ref == 0)
continue;
- if (back->full_backref)
- continue;
/*
* For now we only catch when the bytes don't match, not the
if (!best) {
entry = find_entry(&entries, rec->start, rec->nr);
if (!entry && (!broken_entries || !rec->found_rec)) {
- fprintf(stderr, "Backrefs don't agree with eachother "
+ fprintf(stderr, "Backrefs don't agree with each other "
"and extent record doesn't agree with anybody,"
" so we can't fix bytenr %Lu bytes %Lu\n",
rec->start, rec->nr);
* references and fix up the ones that don't match.
*/
list_for_each_entry(back, &rec->backrefs, list) {
+ if (back->full_backref || !back->is_data)
+ continue;
+
dback = (struct data_backref *)back;
/*
*/
if (dback->found_ref == 0)
continue;
- if (back->full_backref)
- continue;
if (dback->bytes == best->bytes &&
dback->disk_bytenr == best->bytenr)
int ret;
list_for_each_entry(back, &rec->backrefs, list) {
+ /* Don't care about full backrefs (poor unloved backrefs) */
+ if (back->full_backref || !back->is_data)
+ continue;
+
dback = (struct data_backref *)back;
/* We found this one, we don't need to do a lookup */
if (dback->found_ref)
continue;
- /* Don't care about full backrefs (poor unloved backrefs) */
- if (back->full_backref)
- continue;
+
key.objectid = dback->root;
key.type = BTRFS_ROOT_ITEM_KEY;
key.offset = (u64)-1;
int allocated = 0;
u64 flags = 0;
- /* remember our flags for recreating the extent */
- ret = btrfs_lookup_extent_info(NULL, info->extent_root, rec->start,
- rec->max_size, rec->metadata, NULL,
- &flags);
- if (ret < 0)
- flags = BTRFS_BLOCK_FLAG_FULL_BACKREF;
+ /*
+ * remember our flags for recreating the extent.
+ * FIXME, if we have cleared extent tree, we can not
+ * lookup extent info in extent tree.
+ */
+ if (!init_extent_tree) {
+ ret = btrfs_lookup_extent_info(NULL, info->extent_root,
+ rec->start, rec->max_size,
+ rec->metadata, NULL, &flags);
+ if (ret < 0)
+ flags = 0;
+ } else {
+ flags = 0;
+ }
path = btrfs_alloc_path();
if (!path)
if (dev_extent_rec->objectid != dev_rec->devid)
break;
- list_del(&dev_extent_rec->device_list);
+ list_del_init(&dev_extent_rec->device_list);
total_byte += dev_extent_rec->length;
cache = next_cache_extent(cache);
}
struct btrfs_trans_handle *trans = NULL;
int slot;
struct btrfs_root_item ri;
+ struct list_head dropping_trees;
dev_cache = RB_ROOT;
cache_tree_init(&chunk_cache);
cache_tree_init(&nodes);
cache_tree_init(&reada);
cache_tree_init(&corrupt_blocks);
+ INIT_LIST_HEAD(&dropping_trees);
if (repair) {
trans = btrfs_start_transaction(root, 1);
btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
ret = btrfs_search_slot(NULL, root->fs_info->tree_root,
&key, &path, 0, 0);
- BUG_ON(ret < 0);
+ if (ret < 0)
+ goto out;
while(1) {
leaf = path.nodes[0];
slot = path.slots[0];
offset = btrfs_item_ptr_offset(leaf, path.slots[0]);
read_extent_buffer(leaf, &ri, offset, sizeof(ri));
- buf = read_tree_block(root->fs_info->tree_root,
- btrfs_root_bytenr(&ri),
- btrfs_level_size(root,
- btrfs_root_level(&ri)), 0);
- add_root_to_pending(buf, &extent_cache, &pending,
- &seen, &nodes, &found_key);
- free_extent_buffer(buf);
+ if (btrfs_disk_key_objectid(&ri.drop_progress) == 0) {
+ buf = read_tree_block(root->fs_info->tree_root,
+ btrfs_root_bytenr(&ri),
+ btrfs_level_size(root,
+ btrfs_root_level(&ri)),
+ 0);
+ if (!buf) {
+ ret = -EIO;
+ goto out;
+ }
+ add_root_to_pending(buf, &extent_cache,
+ &pending, &seen, &nodes,
+ &found_key);
+ free_extent_buffer(buf);
+ } else {
+ struct dropping_root_item_record *dri_rec;
+ dri_rec = malloc(sizeof(*dri_rec));
+ if (!dri_rec) {
+ perror("malloc");
+ exit(1);
+ }
+ memcpy(&dri_rec->ri, &ri, sizeof(ri));
+ memcpy(&dri_rec->found_key, &found_key,
+ sizeof(found_key));
+ list_add_tail(&dri_rec->list, &dropping_trees);
+ }
}
path.slots[0]++;
}
btrfs_release_path(&path);
- while(1) {
- ret = run_next_block(root, bits, bits_nr, &last, &pending,
- &seen, &reada, &nodes, &extent_cache,
- &chunk_cache, &dev_cache,
- &block_group_cache, &dev_extent_cache);
+ while (1) {
+ ret = run_next_block(trans, root, bits, bits_nr, &last,
+ &pending, &seen, &reada, &nodes,
+ &extent_cache, &chunk_cache, &dev_cache,
+ &block_group_cache, &dev_extent_cache,
+ NULL);
if (ret != 0)
break;
}
- ret = check_extent_refs(trans, root, &extent_cache);
+ while (!list_empty(&dropping_trees)) {
+ struct dropping_root_item_record *rec;
+ struct extent_buffer *buf;
+ rec = list_entry(dropping_trees.next,
+ struct dropping_root_item_record, list);
+ last = 0;
+ if (!bits) {
+ perror("realloc");
+ exit(1);
+ }
+ buf = read_tree_block(root->fs_info->tree_root,
+ btrfs_root_bytenr(&rec->ri),
+ btrfs_level_size(root,
+ btrfs_root_level(&rec->ri)), 0);
+ if (!buf) {
+ ret = -EIO;
+ goto out;
+ }
+ add_root_to_pending(buf, &extent_cache, &pending,
+ &seen, &nodes, &rec->found_key);
+ while (1) {
+ ret = run_next_block(trans, root, bits, bits_nr, &last,
+ &pending, &seen, &reada,
+ &nodes, &extent_cache,
+ &chunk_cache, &dev_cache,
+ &block_group_cache,
+ &dev_extent_cache,
+ &rec->ri);
+ if (ret != 0)
+ break;
+ }
+ free_extent_buffer(buf);
+ list_del(&rec->list);
+ free(rec);
+ }
+
+ if (ret >= 0)
+ ret = check_extent_refs(trans, root, &extent_cache);
if (ret == -EAGAIN) {
ret = btrfs_commit_transaction(trans, root);
if (ret)
free_extent_cache_tree(&pending);
free_extent_cache_tree(&reada);
free_extent_cache_tree(&nodes);
+ free_chunk_cache_tree(&chunk_cache);
+ free_block_group_tree(&block_group_cache);
+ free_device_cache_tree(&dev_cache);
+ free_device_extent_tree(&dev_extent_cache);
free_extent_record_cache(root->fs_info, &extent_cache);
goto again;
}
if (err && !ret)
ret = err;
+out:
if (trans) {
err = btrfs_commit_transaction(trans, root);
if (!ret)
ret = err;
}
-out:
if (repair) {
free_corrupt_blocks_tree(root->fs_info->corrupt_blocks);
root->fs_info->fsck_extent_cache = NULL;
free_device_cache_tree(&dev_cache);
free_block_group_tree(&block_group_cache);
free_device_extent_tree(&dev_extent_cache);
+ free_extent_cache_tree(&seen);
+ free_extent_cache_tree(&pending);
+ free_extent_cache_tree(&reada);
+ free_extent_cache_tree(&nodes);
return ret;
}
struct extent_buffer *c;
struct extent_buffer *old = root->node;
int level;
+ int ret;
struct btrfs_disk_key disk_key = {0,0,0};
level = 0;
if (IS_ERR(c)) {
c = old;
extent_buffer_get(c);
+ overwrite = 1;
}
init:
memset_extent_buffer(c, 0, 0, sizeof(struct btrfs_header));
btrfs_header_fsid(), BTRFS_FSID_SIZE);
write_extent_buffer(c, root->fs_info->chunk_tree_uuid,
- (unsigned long)btrfs_header_chunk_tree_uuid(c),
+ btrfs_header_chunk_tree_uuid(c),
BTRFS_UUID_SIZE);
btrfs_mark_buffer_dirty(c);
-
+ /*
+ * this case can happen in the following case:
+ *
+ * 1.overwrite previous root.
+ *
+ * 2.reinit reloc data root, this is because we skip pin
+ * down reloc data tree before which means we can allocate
+ * same block bytenr here.
+ */
+ if (old->start == c->start) {
+ btrfs_set_root_generation(&root->root_item,
+ trans->transid);
+ root->root_item.level = btrfs_header_level(root->node);
+ ret = btrfs_update_root(trans, root->fs_info->tree_root,
+ &root->root_key, &root->root_item);
+ if (ret) {
+ free_extent_buffer(c);
+ return ret;
+ }
+ }
free_extent_buffer(old);
root->node = c;
add_root_to_dirty_list(root);
int ret;
int i;
+ /*
+ * If we have pinned this block before, don't pin it again.
+ * This can not only avoid forever loop with broken filesystem
+ * but also give us some speedups.
+ */
+ if (test_range_bit(&fs_info->pinned_extents, eb->start,
+ eb->start + eb->len - 1, EXTENT_DIRTY, 0))
+ return 0;
+
btrfs_pin_extent(fs_info, eb->start, eb->len);
leafsize = btrfs_super_leafsize(fs_info->super_copy);
static int reset_block_groups(struct btrfs_fs_info *fs_info)
{
+ struct btrfs_block_group_cache *cache;
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_chunk *chunk;
struct btrfs_key key;
int ret;
+ u64 start;
path = btrfs_alloc_path();
if (!path)
btrfs_chunk_type(leaf, chunk),
key.objectid, key.offset,
btrfs_chunk_length(leaf, chunk));
+ set_extent_dirty(&fs_info->free_space_cache, key.offset,
+ key.offset + btrfs_chunk_length(leaf, chunk),
+ GFP_NOFS);
path->slots[0]++;
}
+ start = 0;
+ while (1) {
+ cache = btrfs_lookup_first_block_group(fs_info, start);
+ if (!cache)
+ break;
+ cache->cached = 1;
+ start = cache->key.objectid + cache->key.offset;
+ }
btrfs_free_path(path);
return 0;
if (ret) {
if (ret > 0)
ret = 0;
- goto out;
+ if (!ret)
+ goto reinit_data_reloc;
+ else
+ goto out;
}
ret = btrfs_del_item(trans, root, path);
}
btrfs_release_path(path);
+reinit_data_reloc:
key.objectid = BTRFS_DATA_RELOC_TREE_OBJECTID;
key.type = BTRFS_ROOT_ITEM_KEY;
key.offset = (u64)-1;
fprintf(stderr, "Error reading data reloc tree\n");
return PTR_ERR(root);
}
- root->track_dirty = 1;
- if (root->last_trans != trans->transid) {
- root->last_trans = trans->transid;
- root->commit_root = root->node;
- extent_buffer_get(root->node);
- }
+ record_root_in_trans(trans, root);
ret = btrfs_fsck_reinit_root(trans, root, 0);
+ if (ret)
+ goto out;
+ ret = btrfs_make_root_dir(trans, root, BTRFS_FIRST_FREE_OBJECTID);
out:
btrfs_free_path(path);
return ret;
}
-static int reinit_extent_tree(struct btrfs_fs_info *fs_info)
+static int reinit_extent_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info)
{
- struct btrfs_trans_handle *trans;
u64 start = 0;
int ret;
return -EINVAL;
}
- trans = btrfs_start_transaction(fs_info->extent_root, 1);
- if (IS_ERR(trans)) {
- fprintf(stderr, "Error starting transaction\n");
- return PTR_ERR(trans);
- }
-
/*
* first we need to walk all of the trees except the extent tree and pin
* down the bytes that are in use so we don't overwrite any existing
}
/* Ok we can allocate now, reinit the extent root */
- ret = btrfs_fsck_reinit_root(trans, fs_info->extent_root, 1);
+ ret = btrfs_fsck_reinit_root(trans, fs_info->extent_root, 0);
if (ret) {
fprintf(stderr, "extent root initialization failed\n");
/*
return ret;
}
- ret = reset_balance(trans, fs_info);
- if (ret) {
- fprintf(stderr, "error reseting the pending balance\n");
- return ret;
- }
-
/*
* Now we have all the in-memory block groups setup so we can make
* allocations properly, and the metadata we care about is safe since we
btrfs_extent_post_op(trans, fs_info->extent_root);
}
- /*
- * Ok now we commit and run the normal fsck, which will add extent
- * entries for all of the items it finds.
- */
- return btrfs_commit_transaction(trans, fs_info->extent_root);
+ ret = reset_balance(trans, fs_info);
+ if (ret)
+ fprintf(stderr, "error reseting the pending balance\n");
+
+ return ret;
}
static int recow_extent_buffer(struct btrfs_root *root, struct extent_buffer *eb)
return ret;
}
+static int delete_bad_item(struct btrfs_root *root, struct bad_item *bad)
+{
+ struct btrfs_path *path;
+ struct btrfs_trans_handle *trans;
+ struct btrfs_key key;
+ int ret;
+
+ printf("Deleting bad item [%llu,%u,%llu]\n", bad->key.objectid,
+ bad->key.type, bad->key.offset);
+ key.objectid = bad->root_id;
+ key.type = BTRFS_ROOT_ITEM_KEY;
+ key.offset = (u64)-1;
+
+ root = btrfs_read_fs_root(root->fs_info, &key);
+ if (IS_ERR(root)) {
+ fprintf(stderr, "Couldn't find owner root %llu\n",
+ key.objectid);
+ return PTR_ERR(root);
+ }
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ btrfs_free_path(path);
+ return PTR_ERR(trans);
+ }
+
+ ret = btrfs_search_slot(trans, root, &bad->key, path, -1, 1);
+ if (ret) {
+ if (ret > 0)
+ ret = 0;
+ goto out;
+ }
+ ret = btrfs_del_item(trans, root, path);
+out:
+ btrfs_commit_transaction(trans, root);
+ btrfs_free_path(path);
+ return ret;
+}
+
+static int zero_log_tree(struct btrfs_root *root)
+{
+ struct btrfs_trans_handle *trans;
+ int ret;
+
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ return ret;
+ }
+ btrfs_set_super_log_root(root->fs_info->super_copy, 0);
+ btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
+ ret = btrfs_commit_transaction(trans, root);
+ return ret;
+}
+
+static int populate_csum(struct btrfs_trans_handle *trans,
+ struct btrfs_root *csum_root, char *buf, u64 start,
+ u64 len)
+{
+ u64 offset = 0;
+ u64 sectorsize;
+ int ret = 0;
+
+ while (offset < len) {
+ sectorsize = csum_root->sectorsize;
+ ret = read_extent_data(csum_root, buf, start + offset,
+ §orsize, 0);
+ if (ret)
+ break;
+ ret = btrfs_csum_file_block(trans, csum_root, start + len,
+ start + offset, buf, sectorsize);
+ if (ret)
+ break;
+ offset += sectorsize;
+ }
+ return ret;
+}
+
+static int fill_csum_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_root *csum_root)
+{
+ struct btrfs_root *extent_root = csum_root->fs_info->extent_root;
+ struct btrfs_path *path;
+ struct btrfs_extent_item *ei;
+ struct extent_buffer *leaf;
+ char *buf;
+ struct btrfs_key key;
+ int ret;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ key.objectid = 0;
+ key.type = BTRFS_EXTENT_ITEM_KEY;
+ key.offset = 0;
+
+ ret = btrfs_search_slot(NULL, extent_root, &key, path, 0, 0);
+ if (ret < 0) {
+ btrfs_free_path(path);
+ return ret;
+ }
+
+ buf = malloc(csum_root->sectorsize);
+ if (!buf) {
+ btrfs_free_path(path);
+ return -ENOMEM;
+ }
+
+ while (1) {
+ if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) {
+ ret = btrfs_next_leaf(extent_root, path);
+ if (ret < 0)
+ break;
+ if (ret) {
+ ret = 0;
+ break;
+ }
+ }
+ leaf = path->nodes[0];
+
+ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+ if (key.type != BTRFS_EXTENT_ITEM_KEY) {
+ path->slots[0]++;
+ continue;
+ }
+
+ ei = btrfs_item_ptr(leaf, path->slots[0],
+ struct btrfs_extent_item);
+ if (!(btrfs_extent_flags(leaf, ei) &
+ BTRFS_EXTENT_FLAG_DATA)) {
+ path->slots[0]++;
+ continue;
+ }
+
+ ret = populate_csum(trans, csum_root, buf, key.objectid,
+ key.offset);
+ if (ret)
+ break;
+ path->slots[0]++;
+ }
+
+ btrfs_free_path(path);
+ free(buf);
+ return ret;
+}
+
static struct option long_options[] = {
{ "super", 1, NULL, 's' },
{ "repair", 0, NULL, 0 },
{ "init-csum-tree", 0, NULL, 0 },
{ "init-extent-tree", 0, NULL, 0 },
+ { "check-data-csum", 0, NULL, 0 },
{ "backup", 0, NULL, 0 },
+ { "subvol-extents", no_argument, NULL, 'E' },
+ { "qgroup-report", 0, NULL, 'Q' },
{ NULL, 0, NULL, 0}
};
"--repair try to repair the filesystem",
"--init-csum-tree create a new CRC tree",
"--init-extent-tree create a new extent tree",
+ "--check-data-csum verify checkums of data blocks",
+ "--qgroup-report print a report on qgroup consistency",
+ "--subvol-extents print subvolume extents and sharing state",
NULL
};
struct btrfs_root *root;
struct btrfs_fs_info *info;
u64 bytenr = 0;
- char uuidbuf[37];
+ u64 subvolid = 0;
+ char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
int ret;
- int num;
+ u64 num;
int option_index = 0;
int init_csum_tree = 0;
- int init_extent_tree = 0;
- enum btrfs_open_ctree_flags ctree_flags = OPEN_CTREE_PARTIAL;
+ int qgroup_report = 0;
+ enum btrfs_open_ctree_flags ctree_flags = OPEN_CTREE_EXCLUSIVE;
while(1) {
int c;
ctree_flags |= OPEN_CTREE_BACKUP_ROOT;
break;
case 's':
- num = atol(optarg);
- bytenr = btrfs_sb_offset(num);
- printf("using SB copy %d, bytenr %llu\n", num,
+ num = arg_strtou64(optarg);
+ if (num >= BTRFS_SUPER_MIRROR_MAX) {
+ fprintf(stderr,
+ "ERROR: super mirror should be less than: %d\n",
+ BTRFS_SUPER_MIRROR_MAX);
+ exit(1);
+ }
+ bytenr = btrfs_sb_offset(((int)num));
+ printf("using SB copy %llu, bytenr %llu\n", num,
(unsigned long long)bytenr);
break;
+ case 'Q':
+ qgroup_report = 1;
+ break;
+ case 'E':
+ subvolid = arg_strtou64(optarg);
+ break;
case '?':
case 'h':
usage(cmd_check_usage);
} else if (option_index == 2) {
printf("Creating a new CRC tree\n");
init_csum_tree = 1;
+ repair = 1;
ctree_flags |= OPEN_CTREE_WRITES;
} else if (option_index == 3) {
init_extent_tree = 1;
ctree_flags |= (OPEN_CTREE_WRITES |
OPEN_CTREE_NO_BLOCK_GROUPS);
repair = 1;
+ } else if (option_index == 4) {
+ check_data_csum = 1;
}
-
}
argc = argc - optind;
- if (argc != 1)
+ if (check_argc_exact(argc, 1))
usage(cmd_check_usage);
radix_tree_init();
if((ret = check_mounted(argv[optind])) < 0) {
fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
- return ret;
+ goto err_out;
} else if(ret) {
fprintf(stderr, "%s is currently mounted. Aborting.\n", argv[optind]);
- return -EBUSY;
+ ret = -EBUSY;
+ goto err_out;
}
+ /* only allow partial opening under repair mode */
+ if (repair)
+ ctree_flags |= OPEN_CTREE_PARTIAL;
+
info = open_ctree_fs_info(argv[optind], bytenr, 0, ctree_flags);
if (!info) {
fprintf(stderr, "Couldn't open file system\n");
- return -EIO;
+ ret = -EIO;
+ goto err_out;
+ }
+
+ root = info->fs_root;
+ /*
+ * repair mode will force us to commit transaction which
+ * will make us fail to load log tree when mounting.
+ */
+ if (repair && btrfs_super_log_root(info->super_copy)) {
+ ret = ask_user("repair mode will force to clear out log tree, Are you sure?");
+ if (!ret) {
+ ret = 1;
+ goto close_out;
+ }
+ ret = zero_log_tree(root);
+ if (ret) {
+ fprintf(stderr, "fail to zero log tree\n");
+ goto close_out;
+ }
}
uuid_unparse(info->super_copy->fsid, uuidbuf);
+ if (qgroup_report) {
+ printf("Print quota groups for %s\nUUID: %s\n", argv[optind],
+ uuidbuf);
+ ret = qgroup_verify_all(info);
+ if (ret == 0)
+ print_qgroup_report(1);
+ goto close_out;
+ }
+ if (subvolid) {
+ printf("Print extent state for subvolume %llu on %s\nUUID: %s\n",
+ subvolid, argv[optind], uuidbuf);
+ ret = print_extent_state(info, subvolid);
+ goto close_out;
+ }
printf("Checking filesystem on %s\nUUID: %s\n", argv[optind], uuidbuf);
if (!extent_buffer_uptodate(info->tree_root->node) ||
!extent_buffer_uptodate(info->dev_root->node) ||
- !extent_buffer_uptodate(info->extent_root->node) ||
!extent_buffer_uptodate(info->chunk_root->node)) {
fprintf(stderr, "Critical roots corrupted, unable to fsck the FS\n");
- return -EIO;
+ ret = -EIO;
+ goto close_out;
}
- root = info->fs_root;
-
- if (init_extent_tree) {
- printf("Creating a new extent tree\n");
- ret = reinit_extent_tree(info);
- if (ret)
- return ret;
- }
- fprintf(stderr, "checking extents\n");
- if (init_csum_tree) {
+ if (init_extent_tree || init_csum_tree) {
struct btrfs_trans_handle *trans;
- fprintf(stderr, "Reinit crc root\n");
- trans = btrfs_start_transaction(info->csum_root, 1);
+ trans = btrfs_start_transaction(info->extent_root, 0);
if (IS_ERR(trans)) {
fprintf(stderr, "Error starting transaction\n");
- return PTR_ERR(trans);
+ ret = PTR_ERR(trans);
+ goto close_out;
}
- ret = btrfs_fsck_reinit_root(trans, info->csum_root, 0);
- if (ret) {
- fprintf(stderr, "crc root initialization failed\n");
- return -EIO;
+ if (init_extent_tree) {
+ printf("Creating a new extent tree\n");
+ ret = reinit_extent_tree(trans, info);
+ if (ret)
+ goto close_out;
}
- ret = btrfs_commit_transaction(trans, info->csum_root);
+ if (init_csum_tree) {
+ fprintf(stderr, "Reinit crc root\n");
+ ret = btrfs_fsck_reinit_root(trans, info->csum_root, 0);
+ if (ret) {
+ fprintf(stderr, "crc root initialization failed\n");
+ ret = -EIO;
+ goto close_out;
+ }
+
+ ret = fill_csum_tree(trans, info->csum_root);
+ if (ret) {
+ fprintf(stderr, "crc refilling failed\n");
+ return -EIO;
+ }
+ }
+ /*
+ * Ok now we commit and run the normal fsck, which will add
+ * extent entries for all of the items it finds.
+ */
+ ret = btrfs_commit_transaction(trans, info->extent_root);
if (ret)
- exit(1);
- goto out;
+ goto close_out;
+ }
+ if (!extent_buffer_uptodate(info->extent_root->node)) {
+ fprintf(stderr, "Critical roots corrupted, unable to fsck the FS\n");
+ ret = -EIO;
+ goto close_out;
}
+ if (!extent_buffer_uptodate(info->csum_root->node)) {
+ fprintf(stderr, "Checksum root corrupted, rerun with --init-csum-tree option\n");
+ ret = -EIO;
+ goto close_out;
+ }
+
+ fprintf(stderr, "checking extents\n");
ret = check_chunks_and_extents(root);
if (ret)
fprintf(stderr, "Errors found in extent allocation tree or chunk allocation\n");
if (ret)
goto out;
+ /*
+ * We used to have to have these hole extents in between our real
+ * extents so if we don't have this flag set we need to make sure there
+ * are no gaps in the file extents for inodes, otherwise we can just
+ * ignore it when this happens.
+ */
+ no_holes = btrfs_fs_incompat(root->fs_info,
+ BTRFS_FEATURE_INCOMPAT_NO_HOLES);
fprintf(stderr, "checking fs roots\n");
ret = check_fs_roots(root, &root_cache);
if (ret)
eb = list_first_entry(&root->fs_info->recow_ebs,
struct extent_buffer, recow);
+ list_del_init(&eb->recow);
ret = recow_extent_buffer(root, eb);
if (ret)
break;
}
+ while (!list_empty(&delete_items)) {
+ struct bad_item *bad;
+
+ bad = list_first_entry(&delete_items, struct bad_item, list);
+ list_del_init(&bad->list);
+ if (repair)
+ ret = delete_bad_item(root, bad);
+ free(bad);
+ }
+
+ if (info->quota_enabled) {
+ int err;
+ fprintf(stderr, "checking quota groups\n");
+ err = qgroup_verify_all(info);
+ if (err)
+ goto out;
+ }
+
if (!list_empty(&root->fs_info->recow_ebs)) {
fprintf(stderr, "Transid errors in file system\n");
ret = 1;
}
out:
- free_root_recs_tree(&root_cache);
- close_ctree(root);
-
+ print_qgroup_report(0);
if (found_old_backref) { /*
* there was a disk format change when mixed
* backref was in testing tree. The old format
(unsigned long long)data_bytes_allocated,
(unsigned long long)data_bytes_referenced);
printf("%s\n", BTRFS_BUILD_VERSION);
+
+ free_root_recs_tree(&root_cache);
+close_out:
+ close_ctree(root);
+err_out:
return ret;
}
projects / platform / upstream / btrfs-progs.git / blobdiff