struct fs_chunk {
u64 logical;
u64 physical;
+ /*
+ * physical_dup only store additonal physical for BTRFS_BLOCK_GROUP_DUP
+ * currently restore only support single and DUP
+ * TODO: modify this structure and the function related to this
+ * structure for support RAID*
+ */
+ u64 physical_dup;
u64 bytes;
struct rb_node l;
struct rb_node p;
struct list_head list;
struct list_head overlapping_chunks;
size_t num_items;
- u32 leafsize;
+ u32 nodesize;
u64 devid;
u64 alloced_chunks;
u64 last_physical_offset;
return NULL;
}
-static u64 logical_to_physical(struct mdrestore_struct *mdres, u64 logical, u64 *size)
+static u64 logical_to_physical(struct mdrestore_struct *mdres, u64 logical,
+ u64 *size, u64 *physical_dup)
{
struct fs_chunk *fs_chunk;
struct rb_node *entry;
BUG();
offset = search.logical - fs_chunk->logical;
+ if (physical_dup) {
+ /* Only in dup case, physical_dup is not equal to 0 */
+ if (fs_chunk->physical_dup)
+ *physical_dup = fs_chunk->physical_dup + offset;
+ else
+ *physical_dup = 0;
+ }
+
*size = min(*size, fs_chunk->bytes + fs_chunk->logical - logical);
return fs_chunk->physical + offset;
}
async->bufsize = compressBound(async->size);
async->buffer = malloc(async->bufsize);
if (!async->buffer) {
- fprintf(stderr, "Error allocing buffer\n");
+ fprintf(stderr, "Error allocating buffer\n");
pthread_mutex_lock(&md->mutex);
if (!md->error)
md->error = -ENOMEM;
int i, ret = 0;
memset(md, 0, sizeof(*md));
- pthread_cond_init(&md->cond, NULL);
- pthread_mutex_init(&md->mutex, NULL);
+ md->cluster = calloc(1, BLOCK_SIZE);
+ if (!md->cluster)
+ return -ENOMEM;
+ md->threads = calloc(num_threads, sizeof(pthread_t));
+ if (!md->threads) {
+ free(md->cluster);
+ return -ENOMEM;
+ }
INIT_LIST_HEAD(&md->list);
INIT_LIST_HEAD(&md->ordered);
md->root = root;
md->out = out;
md->pending_start = (u64)-1;
md->compress_level = compress_level;
- md->cluster = calloc(1, BLOCK_SIZE);
md->sanitize_names = sanitize_names;
if (sanitize_names > 1)
crc32c_optimization_init();
- if (!md->cluster) {
- pthread_cond_destroy(&md->cond);
- pthread_mutex_destroy(&md->mutex);
- return -ENOMEM;
- }
-
+ md->name_tree.rb_node = NULL;
+ md->num_threads = num_threads;
+ pthread_cond_init(&md->cond, NULL);
+ pthread_mutex_init(&md->mutex, NULL);
meta_cluster_init(md, 0);
+
if (!num_threads)
return 0;
- md->name_tree.rb_node = NULL;
- md->num_threads = num_threads;
- md->threads = calloc(num_threads, sizeof(pthread_t));
- if (!md->threads) {
- free(md->cluster);
- pthread_cond_destroy(&md->cond);
- pthread_mutex_destroy(&md->mutex);
- return -ENOMEM;
- }
-
for (i = 0; i < num_threads; i++) {
ret = pthread_create(md->threads + i, NULL, dump_worker, md);
if (ret)
static int read_data_extent(struct metadump_struct *md,
struct async_work *async)
{
- struct btrfs_multi_bio *multi = NULL;
- struct btrfs_device *device;
+ struct btrfs_root *root = md->root;
u64 bytes_left = async->size;
u64 logical = async->start;
u64 offset = 0;
- u64 bytenr;
u64 read_len;
- ssize_t done;
- int fd;
+ int num_copies;
+ int cur_mirror;
int ret;
- while (bytes_left) {
- read_len = bytes_left;
- ret = btrfs_map_block(&md->root->fs_info->mapping_tree, READ,
- logical, &read_len, &multi, 0, NULL);
- if (ret) {
- fprintf(stderr, "Couldn't map data block %d\n", ret);
- return ret;
- }
-
- device = multi->stripes[0].dev;
-
- if (device->fd == 0) {
- fprintf(stderr,
- "Device we need to read from is not open\n");
- free(multi);
- return -EIO;
- }
- fd = device->fd;
- bytenr = multi->stripes[0].physical;
- free(multi);
+ num_copies = btrfs_num_copies(&root->fs_info->mapping_tree, logical,
+ bytes_left);
- read_len = min(read_len, bytes_left);
- done = pread64(fd, async->buffer+offset, read_len, bytenr);
- if (done < read_len) {
- if (done < 0)
- fprintf(stderr, "Error reading extent %d\n",
- errno);
- else
- fprintf(stderr, "Short read\n");
- return -EIO;
+ /* Try our best to read data, just like read_tree_block() */
+ for (cur_mirror = 0; cur_mirror < num_copies; cur_mirror++) {
+ while (bytes_left) {
+ read_len = bytes_left;
+ ret = read_extent_data(root,
+ (char *)(async->buffer + offset),
+ logical, &read_len, cur_mirror);
+ if (ret < 0)
+ break;
+ offset += read_len;
+ logical += read_len;
+ bytes_left -= read_len;
}
-
- bytes_left -= done;
- offset += done;
- logical += done;
}
-
+ if (bytes_left)
+ return -EIO;
return 0;
}
int i = 0;
int ret;
- ret = add_extent(btrfs_header_bytenr(eb), root->leafsize, metadump, 0);
+ ret = add_extent(btrfs_header_bytenr(eb), root->nodesize, metadump, 0);
if (ret) {
fprintf(stderr, "Error adding metadata block\n");
return ret;
continue;
ri = btrfs_item_ptr(eb, i, struct btrfs_root_item);
bytenr = btrfs_disk_root_bytenr(eb, ri);
- tmp = read_tree_block(root, bytenr, root->leafsize, 0);
+ tmp = read_tree_block(root, bytenr, root->nodesize, 0);
if (!extent_buffer_uptodate(tmp)) {
fprintf(stderr,
"Error reading log root block\n");
return ret;
} else {
bytenr = btrfs_node_blockptr(eb, i);
- tmp = read_tree_block(root, bytenr, root->leafsize, 0);
+ tmp = read_tree_block(root, bytenr, root->nodesize, 0);
if (!extent_buffer_uptodate(tmp)) {
fprintf(stderr, "Error reading log block\n");
return -EIO;
bytenr = key.objectid;
if (key.type == BTRFS_METADATA_ITEM_KEY)
- num_bytes = extent_root->leafsize;
+ num_bytes = extent_root->nodesize;
else
num_bytes = key.offset;
return -EIO;
}
- BUG_ON(root->nodesize != root->leafsize);
-
ret = metadump_init(&metadump, root, out, num_threads,
compress_level, sanitize);
if (ret) {
- fprintf(stderr, "Error initing metadump %d\n", ret);
+ fprintf(stderr, "Error initializing metadump %d\n", ret);
close_ctree(root);
return ret;
}
path = btrfs_alloc_path();
if (!path) {
- fprintf(stderr, "Out of memory allocing path\n");
+ fprintf(stderr, "Out of memory allocating path\n");
err = -ENOMEM;
goto out;
}
cur += sizeof(*disk_key);
if (key.type == BTRFS_CHUNK_ITEM_KEY) {
- u64 physical, size = 0;
+ u64 type, physical, physical_dup, size = 0;
chunk = (struct btrfs_chunk *)ptr;
old_num_stripes = btrfs_stack_chunk_num_stripes(chunk);
chunk = (struct btrfs_chunk *)write_ptr;
memmove(write_ptr, ptr, sizeof(*chunk));
- btrfs_set_stack_chunk_num_stripes(chunk, 1);
btrfs_set_stack_chunk_sub_stripes(chunk, 0);
- btrfs_set_stack_chunk_type(chunk,
- BTRFS_BLOCK_GROUP_SYSTEM);
- btrfs_set_stack_stripe_devid(&chunk->stripe,
- super->dev_item.devid);
+ type = btrfs_stack_chunk_type(chunk);
+ if (type & BTRFS_BLOCK_GROUP_DUP) {
+ new_array_size += sizeof(struct btrfs_stripe);
+ write_ptr += sizeof(struct btrfs_stripe);
+ } else {
+ btrfs_set_stack_chunk_num_stripes(chunk, 1);
+ btrfs_set_stack_chunk_type(chunk,
+ BTRFS_BLOCK_GROUP_SYSTEM);
+ }
+ chunk->stripe.devid = super->dev_item.devid;
physical = logical_to_physical(mdres, key.offset,
- &size);
+ &size, &physical_dup);
if (size != (u64)-1)
btrfs_set_stack_stripe_offset(&chunk->stripe,
physical);
{
struct extent_buffer *eb;
- eb = malloc(sizeof(struct extent_buffer) + size);
+ eb = calloc(1, sizeof(struct extent_buffer) + size);
if (!eb)
return NULL;
- memset(eb, 0, sizeof(struct extent_buffer) + size);
eb->start = bytenr;
eb->len = size;
u64 bytenr = async->start;
int i;
- if (size_left % mdres->leafsize)
+ if (size_left % mdres->nodesize)
return 0;
- eb = alloc_dummy_eb(bytenr, mdres->leafsize);
+ eb = alloc_dummy_eb(bytenr, mdres->nodesize);
if (!eb)
return -ENOMEM;
while (size_left) {
eb->start = bytenr;
- memcpy(eb->data, buffer, mdres->leafsize);
+ memcpy(eb->data, buffer, mdres->nodesize);
if (btrfs_header_bytenr(eb) != bytenr)
break;
goto next;
for (i = 0; i < btrfs_header_nritems(eb); i++) {
- struct btrfs_chunk chunk;
+ struct btrfs_chunk *chunk;
struct btrfs_key key;
- u64 type, physical, size = (u64)-1;
+ u64 type, physical, physical_dup, size = (u64)-1;
btrfs_item_key_to_cpu(eb, &key, i);
if (key.type != BTRFS_CHUNK_ITEM_KEY)
continue;
- truncate_item(eb, i, sizeof(chunk));
- read_extent_buffer(eb, &chunk,
- btrfs_item_ptr_offset(eb, i),
- sizeof(chunk));
size = 0;
physical = logical_to_physical(mdres, key.offset,
- &size);
+ &size, &physical_dup);
+
+ if (!physical_dup)
+ truncate_item(eb, i, sizeof(*chunk));
+ chunk = btrfs_item_ptr(eb, i, struct btrfs_chunk);
+
/* Zero out the RAID profile */
- type = btrfs_stack_chunk_type(&chunk);
+ type = btrfs_chunk_type(eb, chunk);
type &= (BTRFS_BLOCK_GROUP_DATA |
BTRFS_BLOCK_GROUP_SYSTEM |
BTRFS_BLOCK_GROUP_METADATA |
BTRFS_BLOCK_GROUP_DUP);
- btrfs_set_stack_chunk_type(&chunk, type);
+ btrfs_set_chunk_type(eb, chunk, type);
- btrfs_set_stack_chunk_num_stripes(&chunk, 1);
- btrfs_set_stack_chunk_sub_stripes(&chunk, 0);
- btrfs_set_stack_stripe_devid(&chunk.stripe, mdres->devid);
+ if (!physical_dup)
+ btrfs_set_chunk_num_stripes(eb, chunk, 1);
+ btrfs_set_chunk_sub_stripes(eb, chunk, 0);
+ btrfs_set_stripe_devid_nr(eb, chunk, 0, mdres->devid);
if (size != (u64)-1)
- btrfs_set_stack_stripe_offset(&chunk.stripe,
- physical);
- memcpy(chunk.stripe.dev_uuid, mdres->uuid,
- BTRFS_UUID_SIZE);
- write_extent_buffer(eb, &chunk,
- btrfs_item_ptr_offset(eb, i),
- sizeof(chunk));
+ btrfs_set_stripe_offset_nr(eb, chunk, 0,
+ physical);
+ /* update stripe 2 offset */
+ if (physical_dup)
+ btrfs_set_stripe_offset_nr(eb, chunk, 1,
+ physical_dup);
+
+ write_extent_buffer(eb, mdres->uuid,
+ (unsigned long)btrfs_stripe_dev_uuid_nr(
+ chunk, 0),
+ BTRFS_UUID_SIZE);
}
memcpy(buffer, eb->data, eb->len);
csum_block(buffer, eb->len);
next:
- size_left -= mdres->leafsize;
- buffer += mdres->leafsize;
- bytenr += mdres->leafsize;
+ size_left -= mdres->nodesize;
+ buffer += mdres->nodesize;
+ bytenr += mdres->nodesize;
}
free(eb);
outfd = fileno(mdres->out);
buffer = malloc(compress_size);
if (!buffer) {
- fprintf(stderr, "Error allocing buffer\n");
+ fprintf(stderr, "Error allocating buffer\n");
pthread_mutex_lock(&mdres->mutex);
if (!mdres->error)
mdres->error = -ENOMEM;
}
while (1) {
- u64 bytenr;
+ u64 bytenr, physical_dup;
off_t offset = 0;
int err = 0;
pthread_mutex_lock(&mdres->mutex);
- while (!mdres->leafsize || list_empty(&mdres->list)) {
+ while (!mdres->nodesize || list_empty(&mdres->list)) {
if (mdres->done) {
pthread_mutex_unlock(&mdres->mutex);
goto out;
if (!mdres->fixup_offset) {
while (size) {
u64 chunk_size = size;
+ physical_dup = 0;
if (!mdres->multi_devices && !mdres->old_restore)
bytenr = logical_to_physical(mdres,
- async->start + offset,
- &chunk_size);
+ async->start + offset,
+ &chunk_size,
+ &physical_dup);
else
bytenr = async->start + offset;
ret = pwrite64(outfd, outbuf+offset, chunk_size,
bytenr);
- if (ret != chunk_size) {
- if (ret < 0) {
- fprintf(stderr, "Error writing to "
- "device %d\n", errno);
- err = errno;
- break;
- } else {
- fprintf(stderr, "Short write\n");
- err = -EIO;
- break;
- }
- }
+ if (ret != chunk_size)
+ goto error;
+
+ if (physical_dup)
+ ret = pwrite64(outfd, outbuf+offset,
+ chunk_size,
+ physical_dup);
+ if (ret != chunk_size)
+ goto error;
+
size -= chunk_size;
offset += chunk_size;
+ continue;
+
+error:
+ if (ret < 0) {
+ fprintf(stderr, "Error writing to device %d\n",
+ errno);
+ err = errno;
+ } else {
+ fprintf(stderr, "Short write\n");
+ err = -EIO;
+ }
}
} else if (async->start != BTRFS_SUPER_INFO_OFFSET) {
ret = write_data_to_disk(mdres->info, outbuf, async->start, size, 0);
int ret;
/* We've already been initialized */
- if (mdres->leafsize)
+ if (mdres->nodesize)
return 0;
if (mdres->compress_method == COMPRESS_ZLIB) {
}
super = (struct btrfs_super_block *)outbuf;
- mdres->leafsize = btrfs_super_leafsize(super);
+ mdres->nodesize = btrfs_super_nodesize(super);
memcpy(mdres->fsid, super->fsid, BTRFS_FSID_SIZE);
memcpy(mdres->uuid, super->dev_item.uuid,
BTRFS_UUID_SIZE);
async->bufsize = le32_to_cpu(item->size);
async->buffer = malloc(async->bufsize);
if (!async->buffer) {
- fprintf(stderr, "Error allocing async buffer\n");
+ fprintf(stderr, "Error allocating async buffer\n");
free(async);
return -ENOMEM;
}
int ret = 0;
int i;
- eb = alloc_dummy_eb(bytenr, mdres->leafsize);
+ eb = alloc_dummy_eb(bytenr, mdres->nodesize);
if (!eb) {
ret = -ENOMEM;
goto out;
}
while (item_bytenr != bytenr) {
- buffer += mdres->leafsize;
- item_bytenr += mdres->leafsize;
+ buffer += mdres->nodesize;
+ item_bytenr += mdres->nodesize;
}
- memcpy(eb->data, buffer, mdres->leafsize);
+ memcpy(eb->data, buffer, mdres->nodesize);
if (btrfs_header_bytenr(eb) != bytenr) {
fprintf(stderr, "Eb bytenr doesn't match found bytenr\n");
ret = -EIO;
}
for (i = 0; i < btrfs_header_nritems(eb); i++) {
- struct btrfs_chunk chunk;
+ struct btrfs_chunk *chunk;
struct fs_chunk *fs_chunk;
struct btrfs_key key;
+ u64 type;
if (btrfs_header_level(eb)) {
u64 blockptr = btrfs_node_blockptr(eb, i);
fs_chunk = malloc(sizeof(struct fs_chunk));
if (!fs_chunk) {
- fprintf(stderr, "Erorr allocating chunk\n");
+ fprintf(stderr, "Error allocating chunk\n");
ret = -ENOMEM;
break;
}
memset(fs_chunk, 0, sizeof(*fs_chunk));
- read_extent_buffer(eb, &chunk, btrfs_item_ptr_offset(eb, i),
- sizeof(chunk));
+ chunk = btrfs_item_ptr(eb, i, struct btrfs_chunk);
fs_chunk->logical = key.offset;
- fs_chunk->physical = btrfs_stack_stripe_offset(&chunk.stripe);
- fs_chunk->bytes = btrfs_stack_chunk_length(&chunk);
+ fs_chunk->physical = btrfs_stripe_offset_nr(eb, chunk, 0);
+ fs_chunk->bytes = btrfs_chunk_length(eb, chunk);
INIT_LIST_HEAD(&fs_chunk->list);
if (tree_search(&mdres->physical_tree, &fs_chunk->p,
physical_cmp, 1) != NULL)
else
tree_insert(&mdres->physical_tree, &fs_chunk->p,
physical_cmp);
- if (fs_chunk->physical + fs_chunk->bytes >
+
+ type = btrfs_chunk_type(eb, chunk);
+ if (type & BTRFS_BLOCK_GROUP_DUP) {
+ fs_chunk->physical_dup =
+ btrfs_stripe_offset_nr(eb, chunk, 1);
+ }
+
+ if (fs_chunk->physical_dup + fs_chunk->bytes >
+ mdres->last_physical_offset)
+ mdres->last_physical_offset = fs_chunk->physical_dup +
+ fs_chunk->bytes;
+ else if (fs_chunk->physical + fs_chunk->bytes >
mdres->last_physical_offset)
mdres->last_physical_offset = fs_chunk->physical +
fs_chunk->bytes;
mdres->alloced_chunks += fs_chunk->bytes;
+ /* in dup case, fs_chunk->bytes should add twice */
+ if (fs_chunk->physical_dup)
+ mdres->alloced_chunks += fs_chunk->bytes;
tree_insert(&mdres->chunk_tree, &fs_chunk->l, chunk_cmp);
}
out:
buffer = malloc(max_size);
if (!buffer) {
- fprintf(stderr, "Error allocing buffer\n");
+ fprintf(stderr, "Error allocating buffer\n");
free(cluster);
return -ENOMEM;
}
if (mdres->compress_method == COMPRESS_ZLIB) {
tmp = malloc(max_size);
if (!tmp) {
- fprintf(stderr, "Error allocing tmp buffer\n");
+ fprintf(stderr, "Error allocating tmp buffer\n");
free(cluster);
free(buffer);
return -ENOMEM;
buffer = malloc(le32_to_cpu(item->size));
if (!buffer) {
- fprintf(stderr, "Error allocing buffer\n");
+ fprintf(stderr, "Error allocating buffer\n");
return -ENOMEM;
}
pthread_mutex_lock(&mdres->mutex);
super = (struct btrfs_super_block *)buffer;
chunk_root_bytenr = btrfs_super_chunk_root(super);
- mdres->leafsize = btrfs_super_leafsize(super);
+ mdres->nodesize = btrfs_super_nodesize(super);
memcpy(mdres->fsid, super->fsid, BTRFS_FSID_SIZE);
memcpy(mdres->uuid, super->dev_item.uuid,
BTRFS_UUID_SIZE);
path = btrfs_alloc_path();
if (!path) {
- fprintf(stderr, "Error alloc'ing path\n");
+ fprintf(stderr, "Error allocating path\n");
return -ENOMEM;
}
/* NOTE: open with write mode */
if (fixup_offset) {
BUG_ON(!target);
- info = open_ctree_fs_info(target, 0, 0,
+ info = open_ctree_fs_info(target, 0, 0, 0,
OPEN_CTREE_WRITES |
OPEN_CTREE_RESTORE |
OPEN_CTREE_PARTIAL);
ret = mdrestore_init(&mdrestore, in, out, old_restore, num_threads,
fixup_offset, info, multi_devices);
if (ret) {
- fprintf(stderr, "Error initing mdrestore %d\n", ret);
+ fprintf(stderr, "Error initializing mdrestore %d\n", ret);
goto failed_cluster;
}
char fs_uuid[BTRFS_UUID_SIZE];
u64 devid, type, io_align, io_width;
u64 sector_size, total_bytes, bytes_used;
- char *buf;
- int fp;
+ char buf[BTRFS_SUPER_INFO_SIZE];
+ int fp = -1;
int ret;
key.objectid = BTRFS_DEV_ITEMS_OBJECTID;
btrfs_init_path(&path);
ret = btrfs_search_slot(NULL, info->chunk_root, &key, &path, 0, 0);
if (ret) {
- fprintf(stderr, "search key fails\n");
- exit(1);
+ fprintf(stderr, "ERROR: search key failed\n");
+ ret = -EIO;
+ goto out;
}
leaf = path.nodes[0];
devid = btrfs_device_id(leaf, dev_item);
if (devid != cur_devid) {
- printk("devid %llu mismatch with %llu\n", devid, cur_devid);
- exit(1);
+ printk("ERROR: devid %llu mismatch with %llu\n", devid, cur_devid);
+ ret = -EIO;
+ goto out;
}
type = btrfs_device_type(leaf, dev_item);
/* update other devices' super block */
fp = open(other_dev, O_CREAT | O_RDWR, 0600);
if (fp < 0) {
- fprintf(stderr, "could not open %s\n", other_dev);
- exit(1);
- }
-
- buf = malloc(BTRFS_SUPER_INFO_SIZE);
- if (!buf) {
- ret = -ENOMEM;
- close(fp);
- return ret;
+ fprintf(stderr, "ERROR: could not open %s\n", other_dev);
+ ret = -EIO;
+ goto out;
}
memcpy(buf, info->super_copy, BTRFS_SUPER_INFO_SIZE);
ret = pwrite64(fp, buf, BTRFS_SUPER_INFO_SIZE, BTRFS_SUPER_INFO_OFFSET);
if (ret != BTRFS_SUPER_INFO_SIZE) {
+ if (ret < 0)
+ fprintf(stderr, "ERROR: cannot write superblock: %s\n", strerror(ret));
+ else
+ fprintf(stderr, "ERROR: cannot write superblock\n");
ret = -EIO;
goto out;
}
write_backup_supers(fp, (u8 *)buf);
out:
- free(buf);
- close(fp);
- return 0;
+ if (fp != -1)
+ close(fp);
+ return ret;
}
static void print_usage(int ret)
{
char *source;
char *target;
- u64 num_threads = 1;
+ u64 num_threads = 0;
u64 compress_level = 0;
int create = 1;
int old_restore = 0;
}
}
- argc = argc - optind;
set_argv0(argv);
- if (check_argc_min(argc, 2))
+ if (check_argc_min(argc - optind, 2))
print_usage(1);
- dev_cnt = argc - 1;
+ dev_cnt = argc - optind - 1;
if (create) {
if (old_restore) {
}
}
- if (num_threads == 1 && compress_level > 0) {
- num_threads = sysconf(_SC_NPROCESSORS_ONLN);
- if (num_threads <= 0)
- num_threads = 1;
+ if (compress_level > 0 || create == 0) {
+ if (num_threads == 0) {
+ long tmp = sysconf(_SC_NPROCESSORS_ONLN);
+
+ if (tmp <= 0)
+ tmp = 1;
+ num_threads = tmp;
+ }
+ } else {
+ num_threads = 0;
}
if (create) {
u64 total_devs;
int i;
- info = open_ctree_fs_info(target, 0, 0,
+ info = open_ctree_fs_info(target, 0, 0, 0,
OPEN_CTREE_PARTIAL |
OPEN_CTREE_RESTORE);
if (!info) {
- int e = errno;
fprintf(stderr, "unable to open %s error = %s\n",
- target, strerror(e));
+ target, strerror(errno));
return 1;
}
}
}
+ btrfs_close_all_devices();
+
return !!ret;
}
projects / platform / upstream / btrfs-progs.git / blobdiff