This crate can parse and read qcow2 virtual disks, as used by qemu and other emulators.
Qcow2 is a flexible format for disk images, that only allocates space as needed. It has many other interesting features.
extern crate positioned_io;
extern crate qcow2;
use positioned_io::ReadAt;
use qcow2::Qcow2;
// Open a qcow2 file.
let file = File::open("image.qcow2")?;
let qcow = Qcow2::open(file)?;
// Read some data from the middle.
let reader = qcow.reader()?;
let mut buf = vec![0, 4096];
reader.read_exact_at(5 * 1024 * 1024, &mut buf)?;http://vasi.github.io/qcow2-rs/qcow2/
This crate works with Cargo and is on
crates.io. Add it to your Cargo.toml like so:
[dependencies]
qcow2 = "0.1.0"