diff options
Diffstat (limited to 'convert/main.c')
-rw-r--r-- | convert/main.c | 163 |
1 files changed, 24 insertions, 139 deletions
diff --git a/convert/main.c b/convert/main.c index 0deccd9c..882daf7c 100644 --- a/convert/main.c +++ b/convert/main.c @@ -103,12 +103,16 @@ #include "convert/source-fs.h" #include "fsfeatures.h" -const struct btrfs_convert_operations ext2_convert_ops; +extern const struct btrfs_convert_operations ext2_convert_ops; +extern const struct btrfs_convert_operations reiserfs_convert_ops; static const struct btrfs_convert_operations *convert_operations[] = { #if BTRFSCONVERT_EXT2 &ext2_convert_ops, #endif +#if BTRFSCONVERT_REISERFS + &reiserfs_convert_ops, +#endif }; static void *print_copied_inodes(void *p) @@ -343,10 +347,12 @@ static int migrate_one_reserved_range(struct btrfs_trans_handle *trans, * migrate ranges that covered by old fs data. */ while (cur_off < range_end(range)) { - cache = lookup_cache_extent(used, cur_off, cur_len); + cache = search_cache_extent(used, cur_off); if (!cache) break; cur_off = max(cache->start, cur_off); + if (cur_off >= range_end(range)) + break; cur_len = min(cache->start + cache->size, range_end(range)) - cur_off; BUG_ON(cur_len < root->fs_info->sectorsize); @@ -414,7 +420,7 @@ static int migrate_one_reserved_range(struct btrfs_trans_handle *trans, } /* - * Relocate the used ext2 data in reserved ranges + * Relocate the used source fs data in reserved ranges */ static int migrate_reserved_ranges(struct btrfs_trans_handle *trans, struct btrfs_root *root, @@ -633,7 +639,7 @@ static int calculate_available_space(struct btrfs_convert_context *cctx) * Twice the minimal chunk size, to allow later wipe_reserved_ranges() * works without need to consider overlap */ - u64 min_stripe_size = 2 * 16 * 1024 * 1024; + u64 min_stripe_size = SZ_32M; int ret; /* Calculate data_chunks */ @@ -745,8 +751,8 @@ static int create_image(struct btrfs_root *root, flags |= BTRFS_INODE_NODATASUM; trans = btrfs_start_transaction(root, 1); - if (!trans) - return -ENOMEM; + if (IS_ERR(trans)) + return PTR_ERR(trans); cache_tree_init(&used_tmp); btrfs_init_path(&path); @@ -798,7 +804,7 @@ static int create_image(struct btrfs_root *root, * Start from 1M, as 0~1M is reserved, and create_image_file_range() * can't handle bytenr 0(will consider it as a hole) */ - cur = 1024 * 1024; + cur = SZ_1M; while (cur < size) { u64 len = size - cur; @@ -832,129 +838,6 @@ out: return ret; } -static struct btrfs_root* link_subvol(struct btrfs_root *root, - const char *base, u64 root_objectid) -{ - struct btrfs_trans_handle *trans; - struct btrfs_fs_info *fs_info = root->fs_info; - struct btrfs_root *tree_root = fs_info->tree_root; - struct btrfs_root *new_root = NULL; - struct btrfs_path path; - struct btrfs_inode_item *inode_item; - struct extent_buffer *leaf; - struct btrfs_key key; - u64 dirid = btrfs_root_dirid(&root->root_item); - u64 index = 2; - char buf[BTRFS_NAME_LEN + 1]; /* for snprintf null */ - int len; - int i; - int ret; - - len = strlen(base); - if (len == 0 || len > BTRFS_NAME_LEN) - return NULL; - - btrfs_init_path(&path); - key.objectid = dirid; - key.type = BTRFS_DIR_INDEX_KEY; - key.offset = (u64)-1; - - ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0); - if (ret <= 0) { - error("search for DIR_INDEX dirid %llu failed: %d", - (unsigned long long)dirid, ret); - goto fail; - } - - if (path.slots[0] > 0) { - path.slots[0]--; - btrfs_item_key_to_cpu(path.nodes[0], &key, path.slots[0]); - if (key.objectid == dirid && key.type == BTRFS_DIR_INDEX_KEY) - index = key.offset + 1; - } - btrfs_release_path(&path); - - trans = btrfs_start_transaction(root, 1); - if (!trans) { - error("unable to start transaction"); - goto fail; - } - - key.objectid = dirid; - key.offset = 0; - key.type = BTRFS_INODE_ITEM_KEY; - - ret = btrfs_lookup_inode(trans, root, &path, &key, 1); - if (ret) { - error("search for INODE_ITEM %llu failed: %d", - (unsigned long long)dirid, ret); - goto fail; - } - leaf = path.nodes[0]; - inode_item = btrfs_item_ptr(leaf, path.slots[0], - struct btrfs_inode_item); - - key.objectid = root_objectid; - key.offset = (u64)-1; - key.type = BTRFS_ROOT_ITEM_KEY; - - memcpy(buf, base, len); - for (i = 0; i < 1024; i++) { - ret = btrfs_insert_dir_item(trans, root, buf, len, - dirid, &key, BTRFS_FT_DIR, index); - if (ret != -EEXIST) - break; - len = snprintf(buf, ARRAY_SIZE(buf), "%s%d", base, i); - if (len < 1 || len > BTRFS_NAME_LEN) { - ret = -EINVAL; - break; - } - } - if (ret) - goto fail; - - btrfs_set_inode_size(leaf, inode_item, len * 2 + - btrfs_inode_size(leaf, inode_item)); - btrfs_mark_buffer_dirty(leaf); - btrfs_release_path(&path); - - /* add the backref first */ - ret = btrfs_add_root_ref(trans, tree_root, root_objectid, - BTRFS_ROOT_BACKREF_KEY, - root->root_key.objectid, - dirid, index, buf, len); - if (ret) { - error("unable to add root backref for %llu: %d", - root->root_key.objectid, ret); - goto fail; - } - - /* now add the forward ref */ - ret = btrfs_add_root_ref(trans, tree_root, root->root_key.objectid, - BTRFS_ROOT_REF_KEY, root_objectid, - dirid, index, buf, len); - if (ret) { - error("unable to add root ref for %llu: %d", - root->root_key.objectid, ret); - goto fail; - } - - ret = btrfs_commit_transaction(trans, root); - if (ret) { - error("transaction commit failed: %d", ret); - goto fail; - } - - new_root = btrfs_read_fs_root(fs_info, &key); - if (IS_ERR(new_root)) { - error("unable to fs read root: %lu", PTR_ERR(new_root)); - new_root = NULL; - } -fail: - btrfs_init_path(&path); - return new_root; -} - static int create_subvol(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 root_objectid) { @@ -1013,7 +896,7 @@ static int make_convert_data_block_groups(struct btrfs_trans_handle *trans, * And for single chunk, don't create chunk larger than 1G. */ max_chunk_size = cfg->num_bytes / 10; - max_chunk_size = min((u64)(1024 * 1024 * 1024), max_chunk_size); + max_chunk_size = min((u64)(SZ_1G), max_chunk_size); max_chunk_size = round_down(max_chunk_size, extent_root->fs_info->sectorsize); @@ -1071,9 +954,9 @@ static int init_btrfs(struct btrfs_mkfs_config *cfg, struct btrfs_root *root, fs_info->avoid_sys_chunk_alloc = 1; fs_info->avoid_meta_chunk_alloc = 1; trans = btrfs_start_transaction(root, 1); - if (!trans) { + if (IS_ERR(trans)) { error("unable to start transaction"); - ret = -EINVAL; + ret = PTR_ERR(trans); goto err; } ret = btrfs_fix_block_accounting(trans, root); @@ -1289,7 +1172,7 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize, goto fail; } - printf("creating btrfs metadata"); + printf("creating btrfs metadata\n"); ret = pthread_mutex_init(&ctx.mutex, NULL); if (ret) { error("failed to initialize mutex: %d", ret); @@ -1313,7 +1196,8 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize, task_deinit(ctx.info); } - image_root = link_subvol(root, subvol_name, CONV_IMAGE_SUBVOL_OBJECTID); + image_root = btrfs_mksubvol(root, subvol_name, + CONV_IMAGE_SUBVOL_OBJECTID, true); if (!image_root) { error("unable to link subvolume %s", subvol_name); goto fail; @@ -1357,7 +1241,7 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize, close_ctree(root); close(fd); - printf("conversion complete"); + printf("conversion complete\n"); return 0; fail: clean_convert_context(&cctx); @@ -1595,7 +1479,7 @@ next: * | RSV 1 | | Old | | RSV 2 | | Old | | RSV 3 | * | 0~1M | | Fs | | SB2 + 64K | | Fs | | SB3 + 64K | * - * On the other hande, the converted fs image in btrfs is a completely + * On the other hand, the converted fs image in btrfs is a completely * valid old fs. * * |<-----------------Converted fs image in btrfs-------------------->| @@ -1664,11 +1548,11 @@ static int do_rollback(const char *devname) ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, &path, 0, 0); btrfs_release_path(&path); if (ret > 0) { - error("unable to find ext2 image subvolume, is it deleted?"); + error("unable to find source fs image subvolume, is it deleted?"); ret = -ENOENT; goto close_fs; } else if (ret < 0) { - error("failed to find ext2 image subvolume: %s", + error("failed to find source fs image subvolume: %s", strerror(-ret)); goto close_fs; } @@ -1786,6 +1670,7 @@ static void print_usage(void) printf("\n"); printf("Supported filesystems:\n"); printf("\text2/3/4: %s\n", BTRFSCONVERT_EXT2 ? "yes" : "no"); + printf("\treiserfs: %s\n", BTRFSCONVERT_REISERFS ? "yes" : "no"); } int main(int argc, char *argv[]) |