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subvolume and snapshot fsck support

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This commit is contained in:
Chris Mason 2007-04-24 12:44:05 -04:00 committed by David Woodhouse
parent 10d06538f1
commit 49bedc2cb4
1 changed files with 46 additions and 15 deletions

61
btrfsck.c
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@ -121,11 +121,6 @@ static int add_extent_rec(struct radix_tree_root *extent_radix,
if (rec) {
if (inc_ref)
rec->refs++;
if (owner != rec->owner) {
fprintf(stderr, "warning, owner mismatch %Lu %Lu %Lu\n",
start, owner, rec->owner);
ret = 1;
}
if (start != rec->start) {
fprintf(stderr, "warning, start mismatch %Lu %Lu\n",
rec->start, start);
@ -297,7 +292,7 @@ static int run_next_block(struct btrfs_root *root,
return 0;
}
static int add_root_to_pending(struct btrfs_root *root,
static int add_root_to_pending(struct btrfs_buffer *buf,
unsigned long *bits,
int bits_nr,
struct radix_tree_root *extent_radix,
@ -306,9 +301,9 @@ static int add_root_to_pending(struct btrfs_root *root,
struct radix_tree_root *reada,
struct radix_tree_root *nodes)
{
add_pending(pending, seen, root->node->blocknr);
add_extent_rec(extent_radix, NULL, 0, root->node->blocknr, 1,
btrfs_header_owner(&root->node->node.header), 0, 1);
add_pending(pending, seen, buf->blocknr);
add_extent_rec(extent_radix, NULL, 0, buf->blocknr, 1,
btrfs_header_owner(&buf->node.header), 0, 1);
return 0;
}
@ -349,10 +344,16 @@ int main(int ac, char **av) {
struct radix_tree_root pending;
struct radix_tree_root reada;
struct radix_tree_root nodes;
struct btrfs_path path;
struct btrfs_key key;
struct btrfs_key found_key;
int ret;
u64 last = 0;
unsigned long *bits;
int bits_nr;
struct btrfs_leaf *leaf;
int slot;
struct btrfs_root_item *ri;
radix_tree_init();
@ -372,14 +373,44 @@ int main(int ac, char **av) {
exit(1);
}
add_root_to_pending(root, bits, bits_nr, &extent_radix,
&pending, &seen, &reada, &nodes);
add_root_to_pending(root->fs_info->tree_root, bits, bits_nr,
add_root_to_pending(root->fs_info->tree_root->node, bits, bits_nr,
&extent_radix, &pending, &seen, &reada, &nodes);
add_root_to_pending(root->fs_info->dev_root, bits, bits_nr,
&extent_radix, &pending, &seen, &reada, &nodes);
add_root_to_pending(root->fs_info->extent_root, bits, bits_nr,
add_root_to_pending(root->fs_info->dev_root->node, bits, bits_nr,
&extent_radix, &pending, &seen, &reada, &nodes);
btrfs_init_path(&path);
key.offset = 0;
key.objectid = 0;
key.flags = 0;
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);
while(1) {
leaf = &path.nodes[0]->leaf;
slot = path.slots[0];
if (slot >= btrfs_header_nritems(&leaf->header)) {
ret = btrfs_next_leaf(root, &path);
if (ret != 0)
break;
leaf = &path.nodes[0]->leaf;
slot = path.slots[0];
}
btrfs_disk_key_to_cpu(&found_key,
&leaf->items[path.slots[0]].key);
if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) {
struct btrfs_buffer *buf;
ri = btrfs_item_ptr(leaf, path.slots[0],
struct btrfs_root_item);
buf = read_tree_block(root->fs_info->tree_root,
btrfs_root_blocknr(ri));
add_root_to_pending(buf, bits, bits_nr, &extent_radix,
&pending, &seen, &reada, &nodes);
btrfs_block_release(root->fs_info->tree_root, buf);
}
path.slots[0]++;
}
btrfs_release_path(root, &path);
while(1) {
ret = run_next_block(root, bits, bits_nr, &last, &pending,
&seen, &reada, &nodes, &extent_radix);