pub fn device_ready(path: &CStr) -> Result<()>Expand description
Check whether all member devices of the filesystem that contains path
are available and the filesystem is ready to mount.
Opens /dev/btrfs-control and issues BTRFS_IOC_DEVICES_READY. path
must be the path to one of the block devices belonging to the filesystem.
Returns Ok(()) when all devices are present; returns an error (typically
ENOENT or ENXIO) if the set is incomplete.