extern char *guestfs_sfdisk_l (guestfs_h *handle, const char *device);
extern char *guestfs_sfdisk_kernel_geometry (guestfs_h *handle, const char *device);
extern char *guestfs_sfdisk_disk_geometry (guestfs_h *handle, const char *device);
+extern int guestfs_vg_activate_all (guestfs_h *handle, int activate);
+extern int guestfs_vg_activate (guestfs_h *handle, int activate, char * const* const volgroups);