From a8ede30f93ad3f2c64b93f93713d89b15d5077a1 Mon Sep 17 00:00:00 2001 From: Su Yue Date: Fri, 1 Sep 2017 14:22:37 +0800 Subject: btrfs-progs: check: introduce repair_chunk_item() Because this patchset concentrates on repair of extent tree, repair_chunk_item() now only inserts missed chunk group item into extent tree. There are some things left TODO, for example dev_item fix. Signed-off-by: Su Yue Signed-off-by: David Sterba --- cmds-check.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'cmds-check.c') diff --git a/cmds-check.c b/cmds-check.c index 00eea0a4..e9f9d683 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -12642,6 +12642,49 @@ out: return err; } +/* + * Add block group item to the extent tree if @err contains REFERENCER_MISSING. + * FIXME: We still need to repair error of dev_item. + * + * Returns error after repair. + */ +static int repair_chunk_item(struct btrfs_trans_handle *trans, + struct btrfs_root *chunk_root, + struct btrfs_path *path, int err) +{ + struct btrfs_chunk *chunk; + struct btrfs_key chunk_key; + struct extent_buffer *eb = path->nodes[0]; + u64 length; + int slot = path->slots[0]; + u64 type; + int ret = 0; + + btrfs_item_key_to_cpu(eb, &chunk_key, slot); + if (chunk_key.type != BTRFS_CHUNK_ITEM_KEY) + return err; + chunk = btrfs_item_ptr(eb, slot, struct btrfs_chunk); + type = btrfs_chunk_type(path->nodes[0], chunk); + length = btrfs_chunk_length(eb, chunk); + + if (err & REFERENCER_MISSING) { + ret = btrfs_make_block_group(trans, chunk_root->fs_info, 0, + type, chunk_key.objectid, chunk_key.offset, length); + if (ret) { + error("fail to add block group item[%llu %llu]", + chunk_key.offset, length); + goto out; + } else { + err &= ~REFERENCER_MISSING; + printf("Added block group item[%llu %llu]\n", + chunk_key.offset, length); + } + } + +out: + return err; +} + /* * Check a chunk item. * Including checking all referred dev_extents and block group @@ -12829,6 +12872,8 @@ again: break; case BTRFS_CHUNK_ITEM_KEY: ret = check_chunk_item(fs_info, eb, slot); + if (repair && ret) + ret = repair_chunk_item(trans, root, path, ret); err |= ret; break; case BTRFS_DEV_EXTENT_KEY: -- cgit v1.2.3