btrfs-find-root − filter to find btrfs root
btrfs−find−root [options] <device>
btrfs−find−root is used to find the satisfied root, you can filter by root tree's objectid, generation, level.
|
−a |
Search through all metadata extents, even the root has been already found. |
−g <generation>
Filter root tree by it's original transaction id, tree root's generation in default.
−o <objectid>
Filter root tree by it's objectid,tree root's objectid in default.
−l <level>
Filter root tree by b−tree's level, level 0 in default.
btrfs−find−root will return 0 if no error happened. If any problems happened, 1 will be returned.
mkfs.btrfs(8)