Function async_write

block/src/qcow_sync.rs:368–380

(disk: &QcowDisk, offset: u64, data: &[u8])

    }

    fn async_write(disk: &QcowDisk, offset: u64, data: &[u8]) {
        let mut async_io = disk.create_async_io(1).unwrap();
        let iovec = libc::iovec {
            iov_base: data.as_ptr().cast::<libc::c_void>().cast_mut(),
            iov_len: data.len(),
        };
        async_io
            .write_vectored(offset as libc::off_t, &[iovec], 1)
            .unwrap();
        let (user_data, result) = async_io.next_completed_request().unwrap();
        assert_eq!(user_data, 1);
        assert_eq!(result as usize, data.len());
    }

    #[test]
    fn test_qcow_async_punch_hole_completion() {