bg->used = em->len;
bg->flags = map->type;
ret = btrfs_add_block_group_cache(fs_info, bg);
+ /*
+ * We may have some valid block group cache added already, in
+ * that case we skip to the next one.
+ */
+ if (ret == -EEXIST) {
+ ret = 0;
+ btrfs_put_block_group(bg);
+ continue;
+ }
+
if (ret) {
btrfs_remove_free_space_cache(bg);
btrfs_put_block_group(bg);
break;
}
+
btrfs_update_space_info(fs_info, bg->flags, em->len, em->len,
0, 0, &space_info);
bg->space_info = space_info;
ret = check_chunk_block_group_mappings(info);
error:
btrfs_free_path(path);
+ /*
+ * We've hit some error while reading the extent tree, and have
+ * rescue=ibadroots mount option.
+ * Try to fill the tree using dummy block groups so that the user can
+ * continue to mount and grab their data.
+ */
+ if (ret && btrfs_test_opt(info, IGNOREBADROOTS))
+ ret = fill_dummy_bgs(info);
return ret;
}