mountable_subvolume

Description:

[ Version ( since = "1.33.15" ) ]
public string mountable_subvolume (string mountable) throws Error

extract the subvolume part of a mountable

Returns the subvolume path of a mountable. Btrfs subvolumes mountables are a combination of both the device name and the subvolume path (see also mountable_device to extract the device of the mountable).

If the mountable does not represent a btrfs subvolume, then this function fails and the errno is set to EINVAL.

Parameters:

this	A GuestfsSession object

Returns:

the returned string, or NULL on error