366 lines
11 KiB
C
366 lines
11 KiB
C
/*
|
|
* Copyright (C) 2007 Oracle. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License v2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
#include "ctree.h"
|
|
#include "disk-io.h"
|
|
#include "print-tree.h"
|
|
|
|
static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
|
|
{
|
|
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
|
|
int i;
|
|
pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
|
|
btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
|
|
btrfs_chunk_type(eb, chunk), num_stripes);
|
|
for (i = 0 ; i < num_stripes ; i++) {
|
|
pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
|
|
btrfs_stripe_devid_nr(eb, chunk, i),
|
|
btrfs_stripe_offset_nr(eb, chunk, i));
|
|
}
|
|
}
|
|
static void print_dev_item(struct extent_buffer *eb,
|
|
struct btrfs_dev_item *dev_item)
|
|
{
|
|
pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
|
|
btrfs_device_id(eb, dev_item),
|
|
btrfs_device_total_bytes(eb, dev_item),
|
|
btrfs_device_bytes_used(eb, dev_item));
|
|
}
|
|
static void print_extent_data_ref(struct extent_buffer *eb,
|
|
struct btrfs_extent_data_ref *ref)
|
|
{
|
|
pr_info("\t\textent data backref root %llu objectid %llu offset %llu count %u\n",
|
|
btrfs_extent_data_ref_root(eb, ref),
|
|
btrfs_extent_data_ref_objectid(eb, ref),
|
|
btrfs_extent_data_ref_offset(eb, ref),
|
|
btrfs_extent_data_ref_count(eb, ref));
|
|
}
|
|
|
|
static void print_extent_item(struct extent_buffer *eb, int slot, int type)
|
|
{
|
|
struct btrfs_extent_item *ei;
|
|
struct btrfs_extent_inline_ref *iref;
|
|
struct btrfs_extent_data_ref *dref;
|
|
struct btrfs_shared_data_ref *sref;
|
|
struct btrfs_disk_key key;
|
|
unsigned long end;
|
|
unsigned long ptr;
|
|
u32 item_size = btrfs_item_size_nr(eb, slot);
|
|
u64 flags;
|
|
u64 offset;
|
|
|
|
if (item_size < sizeof(*ei)) {
|
|
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
|
|
struct btrfs_extent_item_v0 *ei0;
|
|
BUG_ON(item_size != sizeof(*ei0));
|
|
ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
|
|
pr_info("\t\textent refs %u\n",
|
|
btrfs_extent_refs_v0(eb, ei0));
|
|
return;
|
|
#else
|
|
BUG();
|
|
#endif
|
|
}
|
|
|
|
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
|
|
flags = btrfs_extent_flags(eb, ei);
|
|
|
|
pr_info("\t\textent refs %llu gen %llu flags %llu\n",
|
|
btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
|
|
flags);
|
|
|
|
if ((type == BTRFS_EXTENT_ITEM_KEY) &&
|
|
flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
|
|
struct btrfs_tree_block_info *info;
|
|
info = (struct btrfs_tree_block_info *)(ei + 1);
|
|
btrfs_tree_block_key(eb, info, &key);
|
|
pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
|
|
btrfs_disk_key_objectid(&key), key.type,
|
|
btrfs_disk_key_offset(&key),
|
|
btrfs_tree_block_level(eb, info));
|
|
iref = (struct btrfs_extent_inline_ref *)(info + 1);
|
|
} else {
|
|
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
|
|
}
|
|
|
|
ptr = (unsigned long)iref;
|
|
end = (unsigned long)ei + item_size;
|
|
while (ptr < end) {
|
|
iref = (struct btrfs_extent_inline_ref *)ptr;
|
|
type = btrfs_extent_inline_ref_type(eb, iref);
|
|
offset = btrfs_extent_inline_ref_offset(eb, iref);
|
|
switch (type) {
|
|
case BTRFS_TREE_BLOCK_REF_KEY:
|
|
pr_info("\t\ttree block backref root %llu\n", offset);
|
|
break;
|
|
case BTRFS_SHARED_BLOCK_REF_KEY:
|
|
pr_info("\t\tshared block backref parent %llu\n", offset);
|
|
break;
|
|
case BTRFS_EXTENT_DATA_REF_KEY:
|
|
dref = (struct btrfs_extent_data_ref *)(&iref->offset);
|
|
print_extent_data_ref(eb, dref);
|
|
break;
|
|
case BTRFS_SHARED_DATA_REF_KEY:
|
|
sref = (struct btrfs_shared_data_ref *)(iref + 1);
|
|
pr_info("\t\tshared data backref parent %llu count %u\n",
|
|
offset, btrfs_shared_data_ref_count(eb, sref));
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
ptr += btrfs_extent_inline_ref_size(type);
|
|
}
|
|
WARN_ON(ptr > end);
|
|
}
|
|
|
|
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
|
|
static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
|
|
{
|
|
struct btrfs_extent_ref_v0 *ref0;
|
|
|
|
ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
|
|
printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
|
|
btrfs_ref_root_v0(eb, ref0),
|
|
btrfs_ref_generation_v0(eb, ref0),
|
|
btrfs_ref_objectid_v0(eb, ref0),
|
|
(unsigned long)btrfs_ref_count_v0(eb, ref0));
|
|
}
|
|
#endif
|
|
|
|
static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
|
|
u32 item_size)
|
|
{
|
|
if (!IS_ALIGNED(item_size, sizeof(u64))) {
|
|
pr_warn("BTRFS: uuid item with illegal size %lu!\n",
|
|
(unsigned long)item_size);
|
|
return;
|
|
}
|
|
while (item_size) {
|
|
__le64 subvol_id;
|
|
|
|
read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
|
|
pr_info("\t\tsubvol_id %llu\n",
|
|
(unsigned long long)le64_to_cpu(subvol_id));
|
|
item_size -= sizeof(u64);
|
|
offset += sizeof(u64);
|
|
}
|
|
}
|
|
|
|
void btrfs_print_leaf(struct btrfs_fs_info *fs_info, struct extent_buffer *l)
|
|
{
|
|
int i;
|
|
u32 type, nr;
|
|
struct btrfs_item *item;
|
|
struct btrfs_root_item *ri;
|
|
struct btrfs_dir_item *di;
|
|
struct btrfs_inode_item *ii;
|
|
struct btrfs_block_group_item *bi;
|
|
struct btrfs_file_extent_item *fi;
|
|
struct btrfs_extent_data_ref *dref;
|
|
struct btrfs_shared_data_ref *sref;
|
|
struct btrfs_dev_extent *dev_extent;
|
|
struct btrfs_key key;
|
|
struct btrfs_key found_key;
|
|
|
|
if (!l)
|
|
return;
|
|
|
|
nr = btrfs_header_nritems(l);
|
|
|
|
btrfs_info(fs_info, "leaf %llu total ptrs %d free space %d",
|
|
btrfs_header_bytenr(l), nr,
|
|
btrfs_leaf_free_space(fs_info, l));
|
|
for (i = 0 ; i < nr ; i++) {
|
|
item = btrfs_item_nr(i);
|
|
btrfs_item_key_to_cpu(l, &key, i);
|
|
type = key.type;
|
|
pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
|
|
i, key.objectid, type, key.offset,
|
|
btrfs_item_offset(l, item), btrfs_item_size(l, item));
|
|
switch (type) {
|
|
case BTRFS_INODE_ITEM_KEY:
|
|
ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
|
|
pr_info("\t\tinode generation %llu size %llu mode %o\n",
|
|
btrfs_inode_generation(l, ii),
|
|
btrfs_inode_size(l, ii),
|
|
btrfs_inode_mode(l, ii));
|
|
break;
|
|
case BTRFS_DIR_ITEM_KEY:
|
|
di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
|
|
btrfs_dir_item_key_to_cpu(l, di, &found_key);
|
|
pr_info("\t\tdir oid %llu type %u\n",
|
|
found_key.objectid,
|
|
btrfs_dir_type(l, di));
|
|
break;
|
|
case BTRFS_ROOT_ITEM_KEY:
|
|
ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
|
|
pr_info("\t\troot data bytenr %llu refs %u\n",
|
|
btrfs_disk_root_bytenr(l, ri),
|
|
btrfs_disk_root_refs(l, ri));
|
|
break;
|
|
case BTRFS_EXTENT_ITEM_KEY:
|
|
case BTRFS_METADATA_ITEM_KEY:
|
|
print_extent_item(l, i, type);
|
|
break;
|
|
case BTRFS_TREE_BLOCK_REF_KEY:
|
|
pr_info("\t\ttree block backref\n");
|
|
break;
|
|
case BTRFS_SHARED_BLOCK_REF_KEY:
|
|
pr_info("\t\tshared block backref\n");
|
|
break;
|
|
case BTRFS_EXTENT_DATA_REF_KEY:
|
|
dref = btrfs_item_ptr(l, i,
|
|
struct btrfs_extent_data_ref);
|
|
print_extent_data_ref(l, dref);
|
|
break;
|
|
case BTRFS_SHARED_DATA_REF_KEY:
|
|
sref = btrfs_item_ptr(l, i,
|
|
struct btrfs_shared_data_ref);
|
|
pr_info("\t\tshared data backref count %u\n",
|
|
btrfs_shared_data_ref_count(l, sref));
|
|
break;
|
|
case BTRFS_EXTENT_DATA_KEY:
|
|
fi = btrfs_item_ptr(l, i,
|
|
struct btrfs_file_extent_item);
|
|
if (btrfs_file_extent_type(l, fi) ==
|
|
BTRFS_FILE_EXTENT_INLINE) {
|
|
pr_info("\t\tinline extent data size %u\n",
|
|
btrfs_file_extent_inline_len(l, i, fi));
|
|
break;
|
|
}
|
|
pr_info("\t\textent data disk bytenr %llu nr %llu\n",
|
|
btrfs_file_extent_disk_bytenr(l, fi),
|
|
btrfs_file_extent_disk_num_bytes(l, fi));
|
|
pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
|
|
btrfs_file_extent_offset(l, fi),
|
|
btrfs_file_extent_num_bytes(l, fi),
|
|
btrfs_file_extent_ram_bytes(l, fi));
|
|
break;
|
|
case BTRFS_EXTENT_REF_V0_KEY:
|
|
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
|
|
print_extent_ref_v0(l, i);
|
|
#else
|
|
BUG();
|
|
#endif
|
|
break;
|
|
case BTRFS_BLOCK_GROUP_ITEM_KEY:
|
|
bi = btrfs_item_ptr(l, i,
|
|
struct btrfs_block_group_item);
|
|
pr_info(
|
|
"\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
|
|
btrfs_disk_block_group_used(l, bi),
|
|
btrfs_disk_block_group_chunk_objectid(l, bi),
|
|
btrfs_disk_block_group_flags(l, bi));
|
|
break;
|
|
case BTRFS_CHUNK_ITEM_KEY:
|
|
print_chunk(l, btrfs_item_ptr(l, i,
|
|
struct btrfs_chunk));
|
|
break;
|
|
case BTRFS_DEV_ITEM_KEY:
|
|
print_dev_item(l, btrfs_item_ptr(l, i,
|
|
struct btrfs_dev_item));
|
|
break;
|
|
case BTRFS_DEV_EXTENT_KEY:
|
|
dev_extent = btrfs_item_ptr(l, i,
|
|
struct btrfs_dev_extent);
|
|
pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
|
|
btrfs_dev_extent_chunk_tree(l, dev_extent),
|
|
btrfs_dev_extent_chunk_objectid(l, dev_extent),
|
|
btrfs_dev_extent_chunk_offset(l, dev_extent),
|
|
btrfs_dev_extent_length(l, dev_extent));
|
|
break;
|
|
case BTRFS_PERSISTENT_ITEM_KEY:
|
|
pr_info("\t\tpersistent item objectid %llu offset %llu\n",
|
|
key.objectid, key.offset);
|
|
switch (key.objectid) {
|
|
case BTRFS_DEV_STATS_OBJECTID:
|
|
pr_info("\t\tdevice stats\n");
|
|
break;
|
|
default:
|
|
pr_info("\t\tunknown persistent item\n");
|
|
}
|
|
break;
|
|
case BTRFS_TEMPORARY_ITEM_KEY:
|
|
pr_info("\t\ttemporary item objectid %llu offset %llu\n",
|
|
key.objectid, key.offset);
|
|
switch (key.objectid) {
|
|
case BTRFS_BALANCE_OBJECTID:
|
|
pr_info("\t\tbalance status\n");
|
|
break;
|
|
default:
|
|
pr_info("\t\tunknown temporary item\n");
|
|
}
|
|
break;
|
|
case BTRFS_DEV_REPLACE_KEY:
|
|
pr_info("\t\tdev replace\n");
|
|
break;
|
|
case BTRFS_UUID_KEY_SUBVOL:
|
|
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
|
|
print_uuid_item(l, btrfs_item_ptr_offset(l, i),
|
|
btrfs_item_size_nr(l, i));
|
|
break;
|
|
};
|
|
}
|
|
}
|
|
|
|
void btrfs_print_tree(struct btrfs_fs_info *fs_info, struct extent_buffer *c)
|
|
{
|
|
int i; u32 nr;
|
|
struct btrfs_key key;
|
|
int level;
|
|
|
|
if (!c)
|
|
return;
|
|
nr = btrfs_header_nritems(c);
|
|
level = btrfs_header_level(c);
|
|
if (level == 0) {
|
|
btrfs_print_leaf(fs_info, c);
|
|
return;
|
|
}
|
|
btrfs_info(fs_info,
|
|
"node %llu level %d total ptrs %d free spc %u",
|
|
btrfs_header_bytenr(c), level, nr,
|
|
(u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr);
|
|
for (i = 0; i < nr; i++) {
|
|
btrfs_node_key_to_cpu(c, &key, i);
|
|
pr_info("\tkey %d (%llu %u %llu) block %llu\n",
|
|
i, key.objectid, key.type, key.offset,
|
|
btrfs_node_blockptr(c, i));
|
|
}
|
|
for (i = 0; i < nr; i++) {
|
|
struct extent_buffer *next = read_tree_block(fs_info,
|
|
btrfs_node_blockptr(c, i),
|
|
btrfs_node_ptr_generation(c, i));
|
|
if (IS_ERR(next)) {
|
|
continue;
|
|
} else if (!extent_buffer_uptodate(next)) {
|
|
free_extent_buffer(next);
|
|
continue;
|
|
}
|
|
|
|
if (btrfs_is_leaf(next) &&
|
|
level != 1)
|
|
BUG();
|
|
if (btrfs_header_level(next) !=
|
|
level - 1)
|
|
BUG();
|
|
btrfs_print_tree(fs_info, next);
|
|
free_extent_buffer(next);
|
|
}
|
|
}
|