Filter to find btrfs root
btrfs-find-root [options] <dev>
btrfs-find-root is used to find the satisfied root, you can filter by root tree\(cqs objectid, generation, level.
Filter root tree by it\(cqs original transaction id, tree root\(cqs generation in default.
Filter root tree by it\(cqs objectid,tree root\(cqs objectid in default.
Filter root tree by B-+ tree\(cqs level, level 0 in default.
btrfs-find-root will return 0 if no error happened. If any problems happened, 1 will be returned.