1 #val_type uint64_t 2 BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 3 BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 4 BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 5 BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 6
