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f975998875
cloud-hypervisor/tests/integration.rs
Sebastien Boeuf f975998875 ci: Extend snapshot/restore test with virtio-iommu 
When compiled with pci feature, the integration test now validates that
/dev/vdb can be correctly read while being placed behing a virtual
IOMMU.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-05-19 09:03:41 +01:00

4487 lines
154 KiB
Rust
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// Copyright © 2020 Intel Corporation
//
// SPDX-License-Identifier: Apache-2.0
//
#[cfg(test)]
#[cfg(feature = "integration_tests")]
#[macro_use]
extern crate credibility;
#[cfg(test)]
#[cfg(feature = "integration_tests")]
#[macro_use]
extern crate lazy_static;
#[cfg(test)]
#[cfg(feature = "integration_tests")]
mod tests {
#![allow(dead_code)]
use net_util::MacAddr;
use ssh2::Session;
use std::collections::HashMap;
use std::env;
use std::ffi::OsStr;
use std::fs;
use std::io;
use std::io::BufRead;
use std::io::{Read, Write};
use std::net::TcpStream;
use std::path::Path;
use std::process::{Child, Command, Stdio};
use std::string::String;
use std::sync::Mutex;
use std::thread;
use tempdir::TempDir;
use tempfile::NamedTempFile;
lazy_static! {
static ref NEXT_VM_ID: Mutex<u8> = Mutex::new(1);
}
struct GuestNetworkConfig {
guest_ip: String,
l2_guest_ip1: String,
l2_guest_ip2: String,
l2_guest_ip3: String,
host_ip: String,
guest_mac: String,
l2_guest_mac1: String,
l2_guest_mac2: String,
l2_guest_mac3: String,
}
struct Guest<'a> {
tmp_dir: TempDir,
disk_config: &'a dyn DiskConfig,
fw_path: String,
network: GuestNetworkConfig,
}
// Safe to implement as we know we have no interior mutability
impl<'a> std::panic::RefUnwindSafe for Guest<'a> {}
enum DiskType {
OperatingSystem,
RawOperatingSystem,
CloudInit,
}
trait DiskConfig {
fn prepare_files(&mut self, tmp_dir: &TempDir, network: &GuestNetworkConfig);
fn prepare_cloudinit(&self, tmp_dir: &TempDir, network: &GuestNetworkConfig) -> String;
fn disk(&self, disk_type: DiskType) -> Option<String>;
}
#[derive(Clone)]
struct ClearDiskConfig {
osdisk_path: String,
osdisk_raw_path: String,
cloudinit_path: String,
}
impl ClearDiskConfig {
fn new() -> Self {
ClearDiskConfig {
osdisk_path: String::new(),
osdisk_raw_path: String::new(),
cloudinit_path: String::new(),
}
}
}
struct UbuntuDiskConfig {
osdisk_raw_path: String,
cloudinit_path: String,
image_name: String,
}
const BIONIC_IMAGE_NAME: &str = "bionic-server-cloudimg-amd64-raw.img";
const FOCAL_IMAGE_NAME: &str = "focal-server-cloudimg-amd64-raw.img";
const CLEAR_KERNEL_CMDLINE: &str = "root=PARTUUID=6fb4d1a8-6c8c-4dd7-9f7c-1fe0b9f2574c \
console=tty0 console=ttyS0,115200n8 console=hvc0 quiet \
init=/usr/lib/systemd/systemd-bootchart initcall_debug tsc=reliable \
no_timer_check noreplace-smp cryptomgr.notests \
rootfstype=ext4,btrfs,xfs kvm-intel.nested=1 rw";
impl UbuntuDiskConfig {
fn new(image_name: String) -> Self {
UbuntuDiskConfig {
image_name,
osdisk_raw_path: String::new(),
cloudinit_path: String::new(),
}
}
}
fn rate_limited_copy<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<u64> {
for _ in 0..10 {
match fs::copy(&from, &to) {
Err(e) => {
if let Some(errno) = e.raw_os_error() {
if errno == libc::ENOSPC {
thread::sleep(std::time::Duration::new(60, 0));
continue;
}
}
return Err(e);
}
Ok(i) => return Ok(i),
}
}
Err(io::Error::last_os_error())
}
fn clh_command(cmd: &str) -> String {
env::var("BUILD_TARGET").map_or(
format!("target/x86_64-unknown-linux-gnu/release/{}", cmd),
|target| format!("target/{}/release/{}", target, cmd),
)
}
impl DiskConfig for ClearDiskConfig {
fn prepare_cloudinit(&self, tmp_dir: &TempDir, network: &GuestNetworkConfig) -> String {
let cloudinit_file_path =
String::from(tmp_dir.path().join("cloudinit").to_str().unwrap());
let cloud_init_directory = tmp_dir
.path()
.join("cloud-init")
.join("clear")
.join("openstack");
fs::create_dir_all(&cloud_init_directory.join("latest"))
.expect("Expect creating cloud-init directory to succeed");
let source_file_dir = std::env::current_dir()
.unwrap()
.join("test_data")
.join("cloud-init")
.join("clear")
.join("openstack")
.join("latest");
rate_limited_copy(
source_file_dir.join("meta_data.json"),
cloud_init_directory.join("latest").join("meta_data.json"),
)
.expect("Expect copying cloud-init meta_data.json to succeed");
let mut user_data_string = String::new();
fs::File::open(source_file_dir.join("user_data"))
.unwrap()
.read_to_string(&mut user_data_string)
.expect("Expected reading user_data file in to succeed");
user_data_string = user_data_string.replace("192.168.2.1", &network.host_ip);
user_data_string = user_data_string.replace("192.168.2.2", &network.guest_ip);
user_data_string = user_data_string.replace("192.168.2.3", &network.l2_guest_ip1);
user_data_string = user_data_string.replace("192.168.2.4", &network.l2_guest_ip2);
user_data_string = user_data_string.replace("192.168.2.5", &network.l2_guest_ip3);
user_data_string = user_data_string.replace("12:34:56:78:90:ab", &network.guest_mac);
user_data_string =
user_data_string.replace("de:ad:be:ef:12:34", &network.l2_guest_mac1);
user_data_string =
user_data_string.replace("de:ad:be:ef:34:56", &network.l2_guest_mac2);
user_data_string =
user_data_string.replace("de:ad:be:ef:56:78", &network.l2_guest_mac3);
fs::File::create(cloud_init_directory.join("latest").join("user_data"))
.unwrap()
.write_all(&user_data_string.as_bytes())
.expect("Expected writing out user_data to succeed");
std::process::Command::new("mkdosfs")
.args(&["-n", "config-2"])
.args(&["-C", cloudinit_file_path.as_str()])
.arg("8192")
.output()
.expect("Expect creating disk image to succeed");
std::process::Command::new("mcopy")
.arg("-o")
.args(&["-i", cloudinit_file_path.as_str()])
.args(&["-s", cloud_init_directory.to_str().unwrap(), "::"])
.output()
.expect("Expect copying files to disk image to succeed");
cloudinit_file_path
}
fn prepare_files(&mut self, tmp_dir: &TempDir, network: &GuestNetworkConfig) {
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut osdisk_base_path = workload_path.clone();
osdisk_base_path.push("clear-31311-cloudguest.img");
let mut osdisk_raw_base_path = workload_path;
osdisk_raw_base_path.push("clear-31311-cloudguest-raw.img");
let osdisk_path = String::from(tmp_dir.path().join("osdisk.img").to_str().unwrap());
let osdisk_raw_path =
String::from(tmp_dir.path().join("osdisk_raw.img").to_str().unwrap());
let cloudinit_path = self.prepare_cloudinit(tmp_dir, network);
rate_limited_copy(osdisk_base_path, &osdisk_path)
.expect("copying of OS source disk image failed");
rate_limited_copy(osdisk_raw_base_path, &osdisk_raw_path)
.expect("copying of OS source disk raw image failed");
self.cloudinit_path = cloudinit_path;
self.osdisk_path = osdisk_path;
self.osdisk_raw_path = osdisk_raw_path;
}
fn disk(&self, disk_type: DiskType) -> Option<String> {
match disk_type {
DiskType::OperatingSystem => Some(self.osdisk_path.clone()),
DiskType::RawOperatingSystem => Some(self.osdisk_raw_path.clone()),
DiskType::CloudInit => Some(self.cloudinit_path.clone()),
}
}
}
impl DiskConfig for UbuntuDiskConfig {
fn prepare_cloudinit(&self, tmp_dir: &TempDir, network: &GuestNetworkConfig) -> String {
let cloudinit_file_path =
String::from(tmp_dir.path().join("cloudinit").to_str().unwrap());
let cloud_init_directory = tmp_dir.path().join("cloud-init").join("ubuntu");
fs::create_dir_all(&cloud_init_directory)
.expect("Expect creating cloud-init directory to succeed");
let source_file_dir = std::env::current_dir()
.unwrap()
.join("test_data")
.join("cloud-init")
.join("ubuntu");
vec!["meta-data", "user-data"].iter().for_each(|x| {
rate_limited_copy(source_file_dir.join(x), cloud_init_directory.join(x))
.expect("Expect copying cloud-init meta-data to succeed");
});
let mut network_config_string = String::new();
fs::File::open(source_file_dir.join("network-config"))
.unwrap()
.read_to_string(&mut network_config_string)
.expect("Expected reading network-config file in to succeed");
network_config_string = network_config_string.replace("192.168.2.1", &network.host_ip);
network_config_string = network_config_string.replace("192.168.2.2", &network.guest_ip);
network_config_string =
network_config_string.replace("12:34:56:78:90:ab", &network.guest_mac);
fs::File::create(cloud_init_directory.join("network-config"))
.unwrap()
.write_all(&network_config_string.as_bytes())
.expect("Expected writing out network-config to succeed");
std::process::Command::new("mkdosfs")
.args(&["-n", "cidata"])
.args(&["-C", cloudinit_file_path.as_str()])
.arg("8192")
.output()
.expect("Expect creating disk image to succeed");
vec!["user-data", "meta-data", "network-config"]
.iter()
.for_each(|x| {
std::process::Command::new("mcopy")
.arg("-o")
.args(&["-i", cloudinit_file_path.as_str()])
.args(&["-s", cloud_init_directory.join(x).to_str().unwrap(), "::"])
.output()
.expect("Expect copying files to disk image to succeed");
});
cloudinit_file_path
}
fn prepare_files(&mut self, tmp_dir: &TempDir, network: &GuestNetworkConfig) {
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut osdisk_raw_base_path = workload_path;
osdisk_raw_base_path.push(&self.image_name);
let osdisk_raw_path =
String::from(tmp_dir.path().join("osdisk_raw.img").to_str().unwrap());
let cloudinit_path = self.prepare_cloudinit(tmp_dir, network);
rate_limited_copy(osdisk_raw_base_path, &osdisk_raw_path)
.expect("copying of OS source disk raw image failed");
self.cloudinit_path = cloudinit_path;
self.osdisk_raw_path = osdisk_raw_path;
}
fn disk(&self, disk_type: DiskType) -> Option<String> {
match disk_type {
DiskType::OperatingSystem | DiskType::RawOperatingSystem => {
Some(self.osdisk_raw_path.clone())
}
DiskType::CloudInit => Some(self.cloudinit_path.clone()),
}
}
}
fn prepare_virtiofsd(
tmp_dir: &TempDir,
shared_dir: &str,
cache: &str,
) -> (std::process::Child, String) {
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut virtiofsd_path = workload_path;
virtiofsd_path.push("virtiofsd");
let virtiofsd_path = String::from(virtiofsd_path.to_str().unwrap());
let virtiofsd_socket_path =
String::from(tmp_dir.path().join("virtiofs.sock").to_str().unwrap());
// Start the daemon
let child = Command::new(virtiofsd_path.as_str())
.args(&[format!("--socket-path={}", virtiofsd_socket_path).as_str()])
.args(&["-o", format!("source={}", shared_dir).as_str()])
.args(&["-o", format!("cache={}", cache).as_str()])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(10, 0));
(child, virtiofsd_socket_path)
}
fn prepare_vhost_user_fs_daemon(
tmp_dir: &TempDir,
shared_dir: &str,
_cache: &str,
) -> (std::process::Child, String) {
let virtiofsd_socket_path =
String::from(tmp_dir.path().join("virtiofs.sock").to_str().unwrap());
// Start the daemon
let child = Command::new(clh_command("vhost_user_fs"))
.args(&["--shared-dir", shared_dir])
.args(&["--sock", virtiofsd_socket_path.as_str()])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(10, 0));
(child, virtiofsd_socket_path)
}
fn prepare_vubd(
tmp_dir: &TempDir,
blk_img: &str,
num_queues: usize,
rdonly: bool,
direct: bool,
) -> (std::process::Child, String) {
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut blk_file_path = workload_path;
blk_file_path.push(blk_img);
let blk_file_path = String::from(blk_file_path.to_str().unwrap());
let vubd_socket_path = String::from(tmp_dir.path().join("vub.sock").to_str().unwrap());
// Start the daemon
let child = Command::new(clh_command("cloud-hypervisor"))
.args(&[
"--block-backend",
format!(
"path={},socket={},num_queues={},readonly={},direct={}",
blk_file_path, vubd_socket_path, num_queues, rdonly, direct
)
.as_str(),
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(10, 0));
(child, vubd_socket_path)
}
fn temp_vsock_path(tmp_dir: &TempDir) -> String {
String::from(tmp_dir.path().join("vsock").to_str().unwrap())
}
fn temp_api_path(tmp_dir: &TempDir) -> String {
String::from(
tmp_dir
.path()
.join("cloud-hypervisor.sock")
.to_str()
.unwrap(),
)
}
// Creates the directory and returns the path.
fn temp_snapshot_dir_path(tmp_dir: &TempDir) -> String {
let snapshot_dir = String::from(tmp_dir.path().join("snapshot").to_str().unwrap());
std::fs::create_dir(&snapshot_dir).unwrap();
snapshot_dir
}
fn prepare_vhost_user_net_daemon(
tmp_dir: &TempDir,
ip: &str,
tap: Option<&str>,
num_queues: usize,
) -> (std::process::Child, String) {
let vunet_socket_path = String::from(tmp_dir.path().join("vunet.sock").to_str().unwrap());
// Start the daemon
let net_params = if let Some(tap_str) = tap {
format!(
"tap={},ip={},mask=255.255.255.0,socket={},num_queues={},queue_size=1024",
tap_str, ip, vunet_socket_path, num_queues
)
} else {
format!(
"ip={},mask=255.255.255.0,socket={},num_queues={},queue_size=1024",
ip, vunet_socket_path, num_queues
)
};
let child = Command::new(clh_command("cloud-hypervisor"))
.args(&["--net-backend", net_params.as_str()])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(10, 0));
(child, vunet_socket_path)
}
fn curl_command(api_socket: &str, method: &str, url: &str, http_body: Option<&str>) {
let mut curl_args: Vec<&str> =
["--unix-socket", api_socket, "-i", "-X", method, url].to_vec();
if let Some(body) = http_body {
curl_args.push("-H");
curl_args.push("Accept: application/json");
curl_args.push("-H");
curl_args.push("Content-Type: application/json");
curl_args.push("-d");
curl_args.push(body);
}
let status = Command::new("curl")
.args(curl_args)
.status()
.expect("Failed to launch curl command");
assert!(status.success());
}
fn remote_command(api_socket: &str, command: &str, arg: Option<&str>) -> bool {
let mut cmd = Command::new(clh_command("ch-remote"));
cmd.args(&[&format!("--api-socket={}", api_socket), command]);
if let Some(arg) = arg {
cmd.arg(arg);
}
cmd.status().expect("Failed to launch ch-remote").success()
}
fn resize_command(
api_socket: &str,
desired_vcpus: Option<u8>,
desired_ram: Option<usize>,
) -> bool {
let mut cmd = Command::new(clh_command("ch-remote"));
cmd.args(&[&format!("--api-socket={}", api_socket), "resize"]);
if let Some(desired_vcpus) = desired_vcpus {
cmd.arg(format!("--cpus={}", desired_vcpus));
}
if let Some(desired_ram) = desired_ram {
cmd.arg(format!("--memory={}", desired_ram));
}
cmd.status().expect("Failed to launch ch-remote").success()
}
const DEFAULT_SSH_RETRIES: u8 = 6;
const DEFAULT_SSH_TIMEOUT: u8 = 10;
fn ssh_command_ip(command: &str, ip: &str, retries: u8, timeout: u8) -> Result<String, Error> {
let mut s = String::new();
let mut counter = 0;
loop {
match (|| -> Result<(), Error> {
let tcp = TcpStream::connect(format!("{}:22", ip)).map_err(Error::Connection)?;
let mut sess = Session::new().unwrap();
sess.set_tcp_stream(tcp);
sess.handshake().map_err(Error::Handshake)?;
sess.userauth_password("cloud", "cloud123")
.map_err(Error::Authentication)?;
assert!(sess.authenticated());
let mut channel = sess.channel_session().map_err(Error::ChannelSession)?;
channel.exec(command).map_err(Error::Command)?;
// Intentionally ignore these results here as their failure
// does not precipitate a repeat
let _ = channel.read_to_string(&mut s);
let _ = channel.close();
let _ = channel.wait_close();
Ok(())
})() {
Ok(_) => break,
Err(e) => {
counter += 1;
if counter >= retries {
return Err(e);
}
}
};
thread::sleep(std::time::Duration::new((timeout * counter).into(), 0));
}
Ok(s)
}
#[derive(Debug)]
enum Error {
Connection(std::io::Error),
Handshake(ssh2::Error),
Authentication(ssh2::Error),
ChannelSession(ssh2::Error),
Command(ssh2::Error),
Parsing(std::num::ParseIntError),
}
impl std::error::Error for Error {}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{:?}", self)
}
}
impl<'a> Guest<'a> {
fn new_from_ip_range(disk_config: &'a mut dyn DiskConfig, class: &str, id: u8) -> Self {
let tmp_dir = TempDir::new("ch").unwrap();
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut fw_path = workload_path;
fw_path.push("hypervisor-fw");
let fw_path = String::from(fw_path.to_str().unwrap());
let network = GuestNetworkConfig {
guest_ip: format!("{}.{}.2", class, id),
l2_guest_ip1: format!("{}.{}.3", class, id),
l2_guest_ip2: format!("{}.{}.4", class, id),
l2_guest_ip3: format!("{}.{}.5", class, id),
host_ip: format!("{}.{}.1", class, id),
guest_mac: format!("12:34:56:78:90:{:02x}", id),
l2_guest_mac1: format!("de:ad:be:ef:12:{:02x}", id),
l2_guest_mac2: format!("de:ad:be:ef:34:{:02x}", id),
l2_guest_mac3: format!("de:ad:be:ef:56:{:02x}", id),
};
disk_config.prepare_files(&tmp_dir, &network);
Guest {
tmp_dir,
disk_config,
fw_path,
network,
}
}
fn new(disk_config: &'a mut dyn DiskConfig) -> Self {
let mut guard = NEXT_VM_ID.lock().unwrap();
let id = *guard;
*guard = id + 1;
Self::new_from_ip_range(disk_config, "192.168", id)
}
fn default_net_string(&self) -> String {
format!(
"tap=,mac={},ip={},mask=255.255.255.0",
self.network.guest_mac, self.network.host_ip
)
}
fn default_net_string_w_iommu(&self) -> String {
format!(
"tap=,mac={},ip={},mask=255.255.255.0,iommu=on",
self.network.guest_mac, self.network.host_ip
)
}
fn ssh_command(&self, command: &str) -> Result<String, Error> {
ssh_command_ip(
command,
&self.network.guest_ip,
DEFAULT_SSH_RETRIES,
DEFAULT_SSH_TIMEOUT,
)
}
fn ssh_command_l1(&self, command: &str) -> Result<String, Error> {
ssh_command_ip(
command,
&self.network.guest_ip,
DEFAULT_SSH_RETRIES,
DEFAULT_SSH_TIMEOUT,
)
}
fn ssh_command_l2_1(&self, command: &str) -> Result<String, Error> {
ssh_command_ip(
command,
&self.network.l2_guest_ip1,
DEFAULT_SSH_RETRIES,
DEFAULT_SSH_TIMEOUT,
)
}
fn ssh_command_l2_2(&self, command: &str) -> Result<String, Error> {
ssh_command_ip(
command,
&self.network.l2_guest_ip2,
DEFAULT_SSH_RETRIES,
DEFAULT_SSH_TIMEOUT,
)
}
fn ssh_command_l2_3(&self, command: &str) -> Result<String, Error> {
ssh_command_ip(
command,
&self.network.l2_guest_ip3,
DEFAULT_SSH_RETRIES,
DEFAULT_SSH_TIMEOUT,
)
}
fn api_create_body(&self, cpu_count: u8) -> String {
format! {"{{\"cpus\":{{\"boot_vcpus\":{},\"max_vcpus\":{}}},\"kernel\":{{\"path\":\"{}\"}},\"cmdline\":{{\"args\": \"\"}},\"net\":[{{\"ip\":\"{}\", \"mask\":\"255.255.255.0\", \"mac\":\"{}\"}}], \"disks\":[{{\"path\":\"{}\"}}, {{\"path\":\"{}\"}}]}}",
cpu_count,
cpu_count,
self.fw_path.as_str(),
self.network.host_ip,
self.network.guest_mac,
self.disk_config.disk(DiskType::OperatingSystem).unwrap().as_str(),
self.disk_config.disk(DiskType::CloudInit).unwrap().as_str(),
}
}
fn get_cpu_count(&self) -> Result<u32, Error> {
Ok(self
.ssh_command("grep -c processor /proc/cpuinfo")?
.trim()
.parse()
.map_err(Error::Parsing)?)
}
fn get_initial_apicid(&self) -> Result<u32, Error> {
Ok(self
.ssh_command("grep \"initial apicid\" /proc/cpuinfo | grep -o \"[0-9]*\"")?
.trim()
.parse()
.map_err(Error::Parsing)?)
}
fn get_total_memory(&self) -> Result<u32, Error> {
Ok(self
.ssh_command("grep MemTotal /proc/meminfo | grep -o \"[0-9]*\"")?
.trim()
.parse()
.map_err(Error::Parsing)?)
}
fn get_total_memory_l2(&self) -> Result<u32, Error> {
Ok(self
.ssh_command_l2_1("grep MemTotal /proc/meminfo | grep -o \"[0-9]*\"")?
.trim()
.parse()
.map_err(Error::Parsing)?)
}
fn get_entropy(&self) -> Result<u32, Error> {
Ok(self
.ssh_command("cat /proc/sys/kernel/random/entropy_avail")?
.trim()
.parse()
.map_err(Error::Parsing)?)
}
fn get_pci_bridge_class(&self) -> Result<String, Error> {
Ok(self
.ssh_command("cat /sys/bus/pci/devices/0000:00:00.0/class")?
.trim()
.to_string())
}
fn get_pci_device_ids(&self) -> Result<String, Error> {
Ok(self
.ssh_command("cat /sys/bus/pci/devices/*/device")?
.trim()
.to_string())
}
fn get_pci_vendor_ids(&self) -> Result<String, Error> {
Ok(self
.ssh_command("cat /sys/bus/pci/devices/*/vendor")?
.trim()
.to_string())
}
fn does_device_vendor_pair_match(
&self,
device_id: &str,
vendor_id: &str,
) -> Result<bool, Error> {
// We are checking if console device's device id and vendor id pair matches
let devices = self.get_pci_device_ids()?;
let devices: Vec<&str> = devices.split('\n').collect();
let vendors = self.get_pci_vendor_ids()?;
let vendors: Vec<&str> = vendors.split('\n').collect();
for (index, d_id) in devices.iter().enumerate() {
if *d_id == device_id {
if let Some(v_id) = vendors.get(index) {
if *v_id == vendor_id {
return Ok(true);
}
}
}
}
Ok(false)
}
fn valid_virtio_fs_cache_size(
&self,
dax: bool,
cache_size: Option<u64>,
) -> Result<bool, Error> {
let shm_region = self
.ssh_command("sudo grep virtio-pci-shm /proc/iomem")?
.trim()
.to_string();
if shm_region.is_empty() {
return Ok(!dax);
}
// From this point, the region is not empty, hence it is an error
// if DAX is off.
if !dax {
return Ok(false);
}
let cache = if let Some(cache) = cache_size {
cache
} else {
// 8Gib by default
0x0002_0000_0000
};
let args: Vec<&str> = shm_region.split(':').collect();
if args.is_empty() {
return Ok(false);
}
let args: Vec<&str> = args[0].trim().split('-').collect();
if args.len() != 2 {
return Ok(false);
}
let start_addr = u64::from_str_radix(args[0], 16).map_err(Error::Parsing)?;
let end_addr = u64::from_str_radix(args[1], 16).map_err(Error::Parsing)?;
Ok(cache == (end_addr - start_addr + 1))
}
}
struct GuestCommand<'a> {
command: Command,
guest: &'a Guest<'a>,
capture_output: bool,
}
impl<'a> GuestCommand<'a> {
fn new(guest: &'a Guest) -> Self {
Self {
command: Command::new(clh_command("cloud-hypervisor")),
guest,
capture_output: false,
}
}
fn capture_output(&mut self) -> &mut Self {
self.capture_output = true;
self
}
fn spawn(&mut self) -> io::Result<Child> {
if self.capture_output {
self.command
.stderr(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
} else {
self.command.spawn()
}
}
fn args<I, S>(&mut self, args: I) -> &mut Self
where
I: IntoIterator<Item = S>,
S: AsRef<OsStr>,
{
self.command.args(args);
self
}
fn default_disks(&mut self) -> &mut Self {
self.args(&[
"--disk",
format!(
"path={}",
self.guest
.disk_config
.disk(DiskType::OperatingSystem)
.unwrap()
)
.as_str(),
format!(
"path={}",
self.guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
.as_str(),
])
}
fn default_net(&mut self) -> &mut Self {
self.args(&["--net", self.guest.default_net_string().as_str()])
}
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_simple_launch() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let mut bionic = UbuntuDiskConfig::new(BIONIC_IMAGE_NAME.to_string());
let mut focal = UbuntuDiskConfig::new(FOCAL_IMAGE_NAME.to_string());
vec![
&mut clear as &mut dyn DiskConfig,
&mut bionic as &mut dyn DiskConfig,
&mut focal as &mut dyn DiskConfig,
]
.iter_mut()
.for_each(|disk_config| {
let guest = Guest::new(*disk_config);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&["--serial", "tty", "--console", "off"])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver_eq!(tb, guest.get_initial_apicid().unwrap_or(1), 0);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 488_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
aver_eq!(
tb,
guest.get_pci_bridge_class().unwrap_or_default(),
"0x060000"
);
let _ = child.kill();
let _ = child.wait();
});
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_multi_cpu() {
test_block!(tb, "", {
let mut bionic = UbuntuDiskConfig::new(BIONIC_IMAGE_NAME.to_string());
let guest = Guest::new(&mut bionic);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=2,max=4"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 2);
aver_eq!(
tb,
guest
.ssh_command(r#"dmesg | grep "smpboot: Allowing" | sed "s/\[\ *[0-9.]*\] //""#)
.unwrap_or_default()
.trim(),
"smpboot: Allowing 4 CPUs, 2 hotplug CPUs"
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_large_vm() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=48"])
.args(&["--memory", "size=5120M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 5_000_000);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_huge_memory() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=128G"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver!(
tb,
guest.get_total_memory().unwrap_or_default() > 128_000_000
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_pci_msi() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(
tb,
guest
.ssh_command("grep -c PCI-MSI /proc/interrupts")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
12
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[test]
fn test_vmlinux_boot() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 496_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
#[cfg(not(feature = "mmio"))]
aver_eq!(
tb,
guest
.ssh_command("grep -c PCI-MSI /proc/interrupts")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
12
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[test]
fn test_pvh_boot() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux.pvh");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 496_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
#[cfg(not(feature = "mmio"))]
aver_eq!(
tb,
guest
.ssh_command("grep -c PCI-MSI /proc/interrupts")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
12
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[test]
fn test_bzimage_boot() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("bzImage");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 496_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
#[cfg(not(feature = "mmio"))]
aver_eq!(
tb,
guest
.ssh_command("grep -c PCI-MSI /proc/interrupts")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
12
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_blk() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut blk_file_path = dirs::home_dir().unwrap();
blk_file_path.push("workloads");
blk_file_path.push("blk.img");
let mut cloud_child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=4"])
.args(&["--memory", "size=512M,shared=on"])
.args(&["--kernel", guest.fw_path.as_str()])
.args(&[
"--disk",
format!(
"path={}",
guest.disk_config.disk(DiskType::OperatingSystem).unwrap()
)
.as_str(),
format!(
"path={}",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
.as_str(),
format!(
"path={},readonly=on,direct=on,num_queues=4",
blk_file_path.to_str().unwrap()
)
.as_str(),
])
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Check both if /dev/vdc exists and if the block size is 16M.
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
// Check both if /dev/vdc exists and if this block is RO.
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | awk '{print $5}'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
// Check if the number of queues is 4.
aver_eq!(
tb,
guest
.ssh_command("ls -ll /sys/block/vdc/mq | grep ^d | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
4
);
let _ = cloud_child.kill();
let _ = cloud_child.wait();
Ok(())
});
}
type PrepareNetDaemon =
dyn Fn(&TempDir, &str, Option<&str>, usize) -> (std::process::Child, String);
fn test_vhost_user_net(
tap: Option<&str>,
num_queues: usize,
prepare_vhost_user_net_daemon: Option<&PrepareNetDaemon>,
self_spawned: bool,
generate_host_mac: bool,
) {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let host_mac = if generate_host_mac {
Some(MacAddr::local_random())
} else {
None
};
let (net_params, daemon_child) = if self_spawned {
(
format!(
"vhost_user=true,mac={},ip={},mask=255.255.255.0,num_queues={},queue_size=1024{}",
guest.network.guest_mac, guest.network.host_ip, num_queues,
if let Some(host_mac) =host_mac {
format!(",host_mac={}", host_mac)
} else {
"".to_owned()
}
),
None,
)
} else {
let prepare_daemon = prepare_vhost_user_net_daemon.unwrap();
// Start the daemon
let (daemon_child, vunet_socket_path) =
prepare_daemon(&guest.tmp_dir, &guest.network.host_ip, tap, num_queues);
(
format!(
"vhost_user=true,mac={},socket={},num_queues={},queue_size=1024{}",
guest.network.guest_mac,
vunet_socket_path,
num_queues,
if let Some(host_mac) = host_mac {
format!(",host_mac={}", host_mac)
} else {
"".to_owned()
}
),
Some(daemon_child),
)
};
let mut cloud_child = GuestCommand::new(&guest)
.args(&["--cpus", format!("boot={}", num_queues / 2).as_str()])
.args(&["--memory", "size=512M,hotplug_size=2048M,shared=on"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.default_disks()
.args(&["--net", net_params.as_str()])
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
if let Some(tap_name) = tap {
let tap_count = std::process::Command::new("bash")
.arg("-c")
.arg(format!("ip link | grep -c {}", tap_name))
.output()
.expect("Expected checking of tap count to succeed");
aver_eq!(tb, String::from_utf8_lossy(&tap_count.stdout).trim(), "1");
}
if let Some(host_mac) = tap {
let mac_count = std::process::Command::new("bash")
.arg("-c")
.arg(format!("ip link | grep -c {}", host_mac))
.output()
.expect("Expected checking of host mac to succeed");
aver_eq!(tb, String::from_utf8_lossy(&mac_count.stdout).trim(), "1");
}
// 1 network interface + default localhost ==> 2 interfaces
// It's important to note that this test is fully exercising the
// vhost-user-net implementation and the associated backend since
// it does not define any --net network interface. That means all
// the ssh communication in that test happens through the network
// interface backed by vhost-user-net.
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
2
);
// The following pci devices will appear on guest with PCI-MSI
// interrupt vectors assigned.
// 1 virtio-console with 3 vectors: config, Rx, Tx
// 1 virtio-blk with 2 vectors: config, Request
// 1 virtio-blk with 2 vectors: config, Request
// 1 virtio-rng with 2 vectors: config, Request
// Since virtio-net has 2 queue pairs, its vectors is as follows:
// 1 virtio-net with 5 vectors: config, Rx (2), Tx (2)
// Based on the above, the total vectors should 14.
// This is a PCI only feature.
#[cfg(not(feature = "mmio"))]
aver_eq!(
tb,
guest
.ssh_command("grep -c PCI-MSI /proc/interrupts")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
10 + (num_queues as u32)
);
// ACPI is not built with mmio, hence we can't test the resize
// feature for mmio.
#[cfg(not(feature = "mmio"))]
{
guest
.ssh_command(
"echo online | sudo tee /sys/devices/system/memory/auto_online_blocks",
)
.unwrap_or_default();
// Add RAM to the VM
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
// Here by simply checking the size (through ssh), we validate
// the connection is still working, which means vhost-user-net
// keeps working after the resize.
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
}
let _ = cloud_child.kill();
let _ = cloud_child.wait();
if let Some(mut daemon_child) = daemon_child {
thread::sleep(std::time::Duration::new(5, 0));
let _ = daemon_child.kill();
let _ = daemon_child.wait();
}
Ok(())
});
}
#[test]
fn test_vhost_user_net_default() {
test_vhost_user_net(None, 2, Some(&prepare_vhost_user_net_daemon), false, false)
}
#[test]
fn test_vhost_user_net_named_tap() {
test_vhost_user_net(
Some("mytap0"),
2,
Some(&prepare_vhost_user_net_daemon),
false,
false,
)
}
#[test]
fn test_vhost_user_net_existing_tap() {
test_vhost_user_net(
Some("vunet-tap0"),
2,
Some(&prepare_vhost_user_net_daemon),
false,
false,
)
}
#[test]
fn test_vhost_user_net_multiple_queues() {
test_vhost_user_net(None, 4, Some(&prepare_vhost_user_net_daemon), false, false)
}
#[test]
fn test_vhost_user_net_tap_multiple_queues() {
test_vhost_user_net(
Some("vunet-tap1"),
4,
Some(&prepare_vhost_user_net_daemon),
false,
false,
)
}
#[test]
fn test_vhost_user_net_self_spawning() {
test_vhost_user_net(None, 4, None, true, false)
}
#[test]
fn test_vhost_user_net_self_spawning_host_mac() {
test_vhost_user_net(None, 2, None, true, true)
}
#[test]
fn test_vhost_user_net_host_mac() {
test_vhost_user_net(None, 2, None, true, true)
}
type PrepareBlkDaemon =
dyn Fn(&TempDir, &str, usize, bool, bool) -> (std::process::Child, String);
fn test_vhost_user_blk(
num_queues: usize,
readonly: bool,
direct: bool,
prepare_vhost_user_blk_daemon: Option<&PrepareBlkDaemon>,
self_spawned: bool,
) {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path.clone();
kernel_path.push("vmlinux");
let (blk_params, daemon_child) = if self_spawned {
let mut blk_file_path = workload_path;
blk_file_path.push("blk.img");
let blk_file_path = String::from(blk_file_path.to_str().unwrap());
(
format!(
"vhost_user=true,path={},num_queues={},queue_size=128,wce=true",
blk_file_path, num_queues,
),
None,
)
} else {
let prepare_daemon = prepare_vhost_user_blk_daemon.unwrap();
// Start the daemon
let (daemon_child, vubd_socket_path) =
prepare_daemon(&guest.tmp_dir, "blk.img", num_queues, readonly, direct);
(
format!(
"vhost_user=true,socket={},num_queues={},queue_size=128,wce=true",
vubd_socket_path, num_queues,
),
Some(daemon_child),
)
};
let mut cloud_child = GuestCommand::new(&guest)
.args(&["--cpus", format!("boot={}", num_queues).as_str()])
.args(&["--memory", "size=512M,hotplug_size=2048M,shared=on"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.args(&[
"--disk",
format!(
"path={}",
guest.disk_config.disk(DiskType::OperatingSystem).unwrap()
)
.as_str(),
format!(
"path={}",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
.as_str(),
blk_params.as_str(),
])
.default_net()
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Check both if /dev/vdc exists and if the block size is 16M.
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
// Check if this block is RO or RW.
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | awk '{print $5}'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
readonly as u32
);
// Check if the number of queues in /sys/block/vdc/mq matches the
// expected num_queues.
aver_eq!(
tb,
guest
.ssh_command("ls -ll /sys/block/vdc/mq | grep ^d | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
num_queues as u32
);
// Mount the device
let mount_ro_rw_flag = if readonly { "ro,noload" } else { "rw" };
guest.ssh_command("mkdir mount_image")?;
guest.ssh_command(
format!(
"sudo mount -o {} -t ext4 /dev/vdc mount_image/",
mount_ro_rw_flag
)
.as_str(),
)?;
// Check the content of the block device. The file "foo" should
// contain "bar".
aver_eq!(
tb,
guest
.ssh_command("cat mount_image/foo")
.unwrap_or_default()
.trim(),
"bar"
);
// ACPI is not built with mmio, hence we can't test the resize
// feature for mmio.
#[cfg(not(feature = "mmio"))]
{
guest
.ssh_command(
"echo online | sudo tee /sys/devices/system/memory/auto_online_blocks",
)
.unwrap_or_default();
// Add RAM to the VM
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
// Check again the content of the block device after the resize
// has been performed.
aver_eq!(
tb,
guest
.ssh_command("cat mount_image/foo")
.unwrap_or_default()
.trim(),
"bar"
);
}
// Unmount the device
guest.ssh_command("sudo umount /dev/vdc")?;
guest.ssh_command("rm -r mount_image")?;
let _ = cloud_child.kill();
let _ = cloud_child.wait();
if let Some(mut daemon_child) = daemon_child {
thread::sleep(std::time::Duration::new(5, 0));
let _ = daemon_child.kill();
let _ = daemon_child.wait();
}
Ok(())
});
}
#[test]
fn test_vhost_user_blk_default() {
test_vhost_user_blk(2, false, false, Some(&prepare_vubd), false)
}
#[test]
fn test_vhost_user_blk_self_spawning() {
test_vhost_user_blk(1, false, false, None, true)
}
#[test]
fn test_vhost_user_blk_readonly() {
test_vhost_user_blk(1, true, false, Some(&prepare_vubd), false)
}
#[test]
fn test_vhost_user_blk_direct() {
test_vhost_user_blk(1, false, true, Some(&prepare_vubd), false)
}
fn test_boot_from_vhost_user_blk(
num_queues: usize,
readonly: bool,
direct: bool,
prepare_vhost_user_blk_daemon: Option<&PrepareBlkDaemon>,
self_spawned: bool,
) {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let disk_path = guest
.disk_config
.disk(DiskType::RawOperatingSystem)
.unwrap();
let (blk_boot_params, daemon_child) = if self_spawned {
(
format!(
"vhost_user=true,path={},num_queues={},queue_size=128,wce=true",
disk_path, num_queues,
),
None,
)
} else {
let prepare_daemon = prepare_vhost_user_blk_daemon.unwrap();
// Start the daemon
let (daemon_child, vubd_socket_path) = prepare_daemon(
&guest.tmp_dir,
disk_path.as_str(),
num_queues,
readonly,
direct,
);
(
format!(
"vhost_user=true,socket={},num_queues={},queue_size=128,wce=true",
vubd_socket_path, num_queues,
),
Some(daemon_child),
)
};
let mut cloud_child = GuestCommand::new(&guest)
.args(&["--cpus", format!("boot={}", num_queues).as_str()])
.args(&["--memory", "size=512M,shared=on"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.args(&[
"--disk",
blk_boot_params.as_str(),
format!(
"path={}",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
.as_str(),
])
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Just check the VM booted correctly.
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default(),
num_queues as u32
);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 491_000);
if self_spawned {
// The reboot is not supported with mmio, so no reason to test it.
#[cfg(not(feature = "mmio"))]
{
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1);
aver_eq!(tb, reboot_count, 0);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
}
}
let _ = cloud_child.kill();
let _ = cloud_child.wait();
if let Some(mut daemon_child) = daemon_child {
thread::sleep(std::time::Duration::new(5, 0));
let _ = daemon_child.kill();
let _ = daemon_child.wait();
}
Ok(())
});
}
#[test]
fn test_boot_from_vhost_user_blk_default() {
test_boot_from_vhost_user_blk(1, false, false, Some(&prepare_vubd), false)
}
#[test]
fn test_boot_from_vhost_user_blk_self_spawning() {
test_boot_from_vhost_user_blk(1, false, false, None, true)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_split_irqchip() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(
tb,
guest
.ssh_command("cat /proc/interrupts | grep 'IO-APIC' | grep -c 'timer'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
aver_eq!(
tb,
guest
.ssh_command("cat /proc/interrupts | grep 'IO-APIC' | grep -c 'cascade'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
fn test_virtio_fs(
dax: bool,
cache_size: Option<u64>,
virtiofsd_cache: &str,
prepare_daemon: &dyn Fn(&TempDir, &str, &str) -> (std::process::Child, String),
hotplug: bool,
) {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut shared_dir = workload_path.clone();
shared_dir.push("shared_dir");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let (dax_vmm_param, dax_mount_param) = if dax { ("on", "-o dax") } else { ("off", "") };
let cache_size_vmm_param = if let Some(cache) = cache_size {
format!(",cache_size={}", cache)
} else {
"".to_string()
};
let (mut daemon_child, virtiofsd_socket_path) = prepare_daemon(
&guest.tmp_dir,
shared_dir.to_str().unwrap(),
virtiofsd_cache,
);
let mut guest_command = GuestCommand::new(&guest);
guest_command
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M,hotplug_size=2048M,shared=on"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.args(&["--api-socket", &api_socket]);
let fs_params = format!(
"id=myfs0,tag=myfs,sock={},num_queues=1,queue_size=1024,dax={}{}",
virtiofsd_socket_path, dax_vmm_param, cache_size_vmm_param
);
if !hotplug {
guest_command.args(&["--fs", fs_params.as_str()]);
}
let mut child = guest_command.spawn().unwrap();
thread::sleep(std::time::Duration::new(20, 0));
if hotplug {
// Add fs to the VM
aver!(tb, remote_command(&api_socket, "add-fs", Some(&fs_params),));
thread::sleep(std::time::Duration::new(10, 0));
}
// Mount shared directory through virtio_fs filesystem
let mount_cmd = format!(
"mkdir -p mount_dir && \
sudo mount -t virtiofs {} myfs mount_dir/ && \
echo ok",
dax_mount_param
);
aver_eq!(
tb,
guest.ssh_command(&mount_cmd).unwrap_or_default().trim(),
"ok"
);
// Check the cache size is the expected one.
// With virtio-mmio the cache doesn't appear in /proc/iomem
#[cfg(not(feature = "mmio"))]
aver_eq!(
tb,
guest
.valid_virtio_fs_cache_size(dax, cache_size)
.unwrap_or_default(),
true
);
// Check file1 exists and its content is "foo"
aver_eq!(
tb,
guest
.ssh_command("cat mount_dir/file1")
.unwrap_or_default()
.trim(),
"foo"
);
// Check file2 does not exist
aver_ne!(
tb,
guest
.ssh_command("ls mount_dir/file2")
.unwrap_or_default()
.trim(),
"mount_dir/file2"
);
// Check file3 exists and its content is "bar"
aver_eq!(
tb,
guest
.ssh_command("cat mount_dir/file3")
.unwrap_or_default()
.trim(),
"bar"
);
// ACPI is not built with mmio, hence we can't test the resize
// feature for mmio.
#[cfg(not(feature = "mmio"))]
{
guest
.ssh_command(
"echo online | sudo tee /sys/devices/system/memory/auto_online_blocks",
)
.unwrap_or_default();
// Add RAM to the VM
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
// After the resize, check again that file1 exists and its
// content is "foo".
aver_eq!(
tb,
guest
.ssh_command("cat mount_dir/file1")
.unwrap_or_default()
.trim(),
"foo"
);
}
if hotplug {
// Remove from VM
aver_eq!(
tb,
guest
.ssh_command("sudo umount mount_dir && echo ok")
.unwrap_or_default()
.trim(),
"ok"
);
aver!(
tb,
remote_command(&api_socket, "remove-device", Some("myfs0"),)
);
thread::sleep(std::time::Duration::new(10, 0));
let (mut daemon_child, virtiofsd_socket_path) = prepare_daemon(
&guest.tmp_dir,
shared_dir.to_str().unwrap(),
virtiofsd_cache,
);
thread::sleep(std::time::Duration::new(10, 0));
let fs_params = format!(
"id=myfs0,tag=myfs,sock={},num_queues=1,queue_size=1024,dax={}{}",
virtiofsd_socket_path, dax_vmm_param, cache_size_vmm_param
);
// Add back and check it works
aver!(tb, remote_command(&api_socket, "add-fs", Some(&fs_params),));
thread::sleep(std::time::Duration::new(10, 0));
// Mount shared directory through virtio_fs filesystem
let mount_cmd = format!(
"mkdir -p mount_dir && \
sudo mount -t virtiofs {} myfs mount_dir/ && \
echo ok",
dax_mount_param
);
aver_eq!(
tb,
guest.ssh_command(&mount_cmd).unwrap_or_default().trim(),
"ok"
);
// Check file1 exists and its content is "foo"
aver_eq!(
tb,
guest
.ssh_command("cat mount_dir/file1")
.unwrap_or_default()
.trim(),
"foo"
);
let _ = daemon_child.kill();
let _ = daemon_child.wait();
}
let _ = child.kill();
let _ = daemon_child.kill();
let _ = child.wait();
let _ = daemon_child.wait();
Ok(())
});
}
#[test]
fn test_virtio_fs_dax_on_default_cache_size() {
test_virtio_fs(true, None, "none", &prepare_virtiofsd, false)
}
#[test]
fn test_virtio_fs_dax_on_cache_size_1_gib() {
test_virtio_fs(true, Some(0x4000_0000), "none", &prepare_virtiofsd, false)
}
#[test]
fn test_virtio_fs_dax_off() {
test_virtio_fs(false, None, "none", &prepare_virtiofsd, false)
}
#[test]
fn test_virtio_fs_dax_on_default_cache_size_w_vhost_user_fs_daemon() {
test_virtio_fs(true, None, "none", &prepare_vhost_user_fs_daemon, false)
}
#[test]
fn test_virtio_fs_dax_on_cache_size_1_gib_w_vhost_user_fs_daemon() {
test_virtio_fs(
true,
Some(0x4000_0000),
"none",
&prepare_vhost_user_fs_daemon,
false,
)
}
#[test]
fn test_virtio_fs_dax_off_w_vhost_user_fs_daemon() {
test_virtio_fs(false, None, "none", &prepare_vhost_user_fs_daemon, false)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_fs_hotplug_dax_on() {
test_virtio_fs(true, None, "none", &prepare_virtiofsd, true)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_fs_hotplug_dax_off() {
test_virtio_fs(false, None, "none", &prepare_virtiofsd, true)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_fs_hotplug_dax_on_w_vhost_user_fs_daemon() {
test_virtio_fs(true, None, "none", &prepare_vhost_user_fs_daemon, true)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_fs_hotplug_dax_off_w_vhost_user_fs_daemon() {
test_virtio_fs(false, None, "none", &prepare_vhost_user_fs_daemon, true)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_pmem_persist_writes() {
test_virtio_pmem(false, false)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_pmem_discard_writes() {
test_virtio_pmem(true, false)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_pmem_with_size() {
test_virtio_pmem(true, true)
}
fn test_virtio_pmem(discard_writes: bool, specify_size: bool) {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut pmem_temp_file = NamedTempFile::new().unwrap();
pmem_temp_file.as_file_mut().set_len(128 << 20).unwrap();
std::process::Command::new("mkfs.ext4")
.arg(pmem_temp_file.path())
.output()
.expect("Expect creating disk image to succeed");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", &guest.fw_path])
.default_disks()
.default_net()
.args(&[
"--pmem",
format!(
"file={}{}{}",
pmem_temp_file.path().to_str().unwrap(),
if specify_size { ",size=128M" } else { "" },
if discard_writes {
",discard_writes=on"
} else {
""
}
)
.as_str(),
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Check for the presence of /dev/pmem0
aver_eq!(
tb,
guest
.ssh_command("ls /dev/pmem0")
.unwrap_or_default()
.trim(),
"/dev/pmem0"
);
// Check changes persist after reboot
aver_eq!(
tb,
guest.ssh_command("sudo mount /dev/pmem0 /mnt").unwrap(),
""
);
aver_eq!(tb, guest.ssh_command("ls /mnt").unwrap(), "lost+found\n");
guest
.ssh_command("echo test123 | sudo tee /mnt/test")
.unwrap();
aver_eq!(tb, guest.ssh_command("sudo umount /mnt").unwrap(), "");
aver_eq!(tb, guest.ssh_command("ls /mnt").unwrap(), "");
guest.ssh_command("sudo reboot").unwrap();
thread::sleep(std::time::Duration::new(30, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
aver_eq!(
tb,
guest.ssh_command("sudo mount /dev/pmem0 /mnt").unwrap(),
""
);
aver_eq!(
tb,
guest
.ssh_command("sudo cat /mnt/test")
.unwrap_or_default()
.trim(),
if discard_writes { "" } else { "test123" }
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[test]
fn test_boot_from_virtio_pmem() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&[
"--disk",
format!(
"path={}",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
.as_str(),
])
.default_net()
.args(&[
"--pmem",
format!(
"file={},size={}",
guest
.disk_config
.disk(DiskType::RawOperatingSystem)
.unwrap(),
fs::metadata(
&guest
.disk_config
.disk(DiskType::RawOperatingSystem)
.unwrap()
)
.unwrap()
.len()
)
.as_str(),
])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Simple checks to validate the VM booted properly
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 496_000);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_multiple_network_interfaces() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.args(&[
"--net",
guest.default_net_string().as_str(),
"tap=,mac=8a:6b:6f:5a:de:ac,ip=192.168.3.1,mask=255.255.255.0",
"tap=mytap1,mac=fe:1f:9e:e1:60:f2,ip=192.168.4.1,mask=255.255.255.0",
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
let tap_count = std::process::Command::new("bash")
.arg("-c")
.arg("ip link | grep -c mytap1")
.output()
.expect("Expected checking of tap count to succeed");
aver_eq!(tb, String::from_utf8_lossy(&tap_count.stdout).trim(), "1");
// 3 network interfaces + default localhost ==> 4 interfaces
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
4
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
fn test_serial_off() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("bzImage");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&[
"--cmdline",
CLEAR_KERNEL_CMDLINE
.replace("console=ttyS0,115200n8 ", "")
.as_str(),
])
.args(&["--serial", "off"])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Test that there is no ttyS0
aver_eq!(
tb,
guest
.ssh_command("cat /proc/interrupts | grep 'IO-APIC' | grep -c 'ttyS0'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_serial_null() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&["--serial", "null"])
.args(&["--console", "off"])
.capture_output()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Test that there is a ttyS0
aver_eq!(
tb,
guest
.ssh_command("cat /proc/interrupts | grep 'IO-APIC' | grep -c 'ttyS0'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
let _ = child.kill();
match child.wait_with_output() {
Ok(out) => {
aver!(
tb,
!String::from_utf8_lossy(&out.stdout).contains("cloud login:")
);
}
Err(_) => aver!(tb, false),
}
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_serial_tty() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&["--serial", "tty"])
.args(&["--console", "off"])
.capture_output()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Test that there is a ttyS0
aver_eq!(
tb,
guest
.ssh_command("cat /proc/interrupts | grep 'IO-APIC' | grep -c 'ttyS0'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
let _ = child.kill();
match child.wait_with_output() {
Ok(out) => {
aver!(
tb,
String::from_utf8_lossy(&out.stdout).contains("cloud login:")
);
}
Err(_) => aver!(tb, false),
}
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_serial_file() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let serial_path = guest.tmp_dir.path().join("/tmp/serial-output");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&[
"--serial",
format!("file={}", serial_path.to_str().unwrap()).as_str(),
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Test that there is a ttyS0
aver_eq!(
tb,
guest
.ssh_command("cat /proc/interrupts | grep 'IO-APIC' | grep -c 'ttyS0'")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
guest.ssh_command("sudo shutdown -h now")?;
// Check that the cloud-hypervisor binary actually terminated
if let Ok(status) = child.wait() {
aver_eq!(tb, status.success(), true);
}
// Do this check after shutdown of the VM as an easy way to ensure
// all writes are flushed to disk
let mut f = std::fs::File::open(serial_path)?;
let mut buf = String::new();
f.read_to_string(&mut buf)?;
aver!(tb, buf.contains("cloud login:"));
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_console() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&["--console", "tty"])
.capture_output()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
#[cfg(not(feature = "mmio"))]
aver!(
tb,
guest
.does_device_vendor_pair_match("0x1043", "0x1af4")
.unwrap_or_default()
);
let text = String::from("On a branch floating down river a cricket, singing.");
let cmd = format!("echo {} | sudo tee /dev/hvc0", text);
guest.ssh_command(&cmd)?;
let _ = child.kill();
match child.wait_with_output() {
Ok(out) => {
aver!(tb, String::from_utf8_lossy(&out.stdout).contains(&text));
}
Err(_) => aver!(tb, false),
}
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_console_file() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let console_path = guest.tmp_dir.path().join("/tmp/console-output");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&[
"--console",
format!("file={}", console_path.to_str().unwrap()).as_str(),
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
guest.ssh_command("sudo shutdown -h now")?;
// Check that the cloud-hypervisor binary actually terminated
if let Ok(status) = child.wait() {
aver_eq!(tb, status.success(), true);
}
// Do this check after shutdown of the VM as an easy way to ensure
// all writes are flushed to disk
let mut f = std::fs::File::open(console_path)?;
let mut buf = String::new();
f.read_to_string(&mut buf)?;
aver!(tb, buf.contains("cloud login:"));
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
// The VFIO integration test starts cloud-hypervisor guest with 3 TAP
// backed networking interfaces, bound through a simple bridge on the host.
// So if the nested cloud-hypervisor succeeds in getting a directly
// assigned interface from its cloud-hypervisor host, we should be able to
// ssh into it, and verify that it's running with the right kernel command
// line (We tag the command line from cloud-hypervisor for that purpose).
// The third device is added to validate that hotplug works correctly since
// it is being added to the L2 VM through hotplugging mechanism.
fn test_vfio() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new_from_ip_range(&mut clear, "172.17", 0);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path.clone();
kernel_path.push("bzImage");
let mut vfio_path = workload_path;
vfio_path.push("vfio");
let mut cloud_init_vfio_base_path = vfio_path.clone();
cloud_init_vfio_base_path.push("cloudinit.img");
// We copy our cloudinit into the vfio mount point, for the nested
// cloud-hypervisor guest to use.
rate_limited_copy(
&guest.disk_config.disk(DiskType::CloudInit).unwrap(),
&cloud_init_vfio_base_path,
)
.expect("copying of cloud-init disk failed");
let vfio_tap0 = "vfio-tap0";
let vfio_tap1 = "vfio-tap1";
let vfio_tap2 = "vfio-tap2";
let vfio_tap3 = "vfio-tap3";
let (mut daemon_child, virtiofsd_socket_path) =
prepare_virtiofsd(&guest.tmp_dir, vfio_path.to_str().unwrap(), "none");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=4"])
.args(&["--memory", "size=2G,hugepages=on,shared=on"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.args(&[
"--cmdline",
format!(
"{} vfio_iommu_type1.allow_unsafe_interrupts",
CLEAR_KERNEL_CMDLINE
)
.as_str(),
])
.args(&[
"--net",
format!("tap={},mac={}", vfio_tap0, guest.network.guest_mac).as_str(),
format!(
"tap={},mac={},iommu=on",
vfio_tap1, guest.network.l2_guest_mac1
)
.as_str(),
format!(
"tap={},mac={},iommu=on",
vfio_tap2, guest.network.l2_guest_mac2
)
.as_str(),
format!(
"tap={},mac={},iommu=on",
vfio_tap3, guest.network.l2_guest_mac3
)
.as_str(),
])
.args(&[
"--fs",
format!(
"tag=myfs,sock={},num_queues=1,queue_size=1024,dax=on",
virtiofsd_socket_path,
)
.as_str(),
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(30, 0));
guest.ssh_command_l1("sudo systemctl start vfio")?;
thread::sleep(std::time::Duration::new(60, 0));
// We booted our cloud hypervisor L2 guest with a "VFIOTAG" tag
// added to its kernel command line.
// Let's ssh into it and verify that it's there. If it is it means
// we're in the right guest (The L2 one) because the QEMU L1 guest
// does not have this command line tag.
aver_eq!(
tb,
guest
.ssh_command_l2_1("grep -c VFIOTAG /proc/cmdline")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
// Let's also verify from the second virtio-net device passed to
// the L2 VM.
aver_eq!(
tb,
guest
.ssh_command_l2_2("grep -c VFIOTAG /proc/cmdline")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
// Check the amount of PCI devices appearing in L2 VM.
aver_eq!(
tb,
guest
.ssh_command_l2_1("ls /sys/bus/pci/devices | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
7,
);
// Hotplug an extra virtio-net device through L2 VM.
guest.ssh_command_l1(
"echo 0000:00:07.0 | sudo tee /sys/bus/pci/devices/0000:00:07.0/driver/unbind",
)?;
guest
.ssh_command_l1("echo 1af4 1041 | sudo tee /sys/bus/pci/drivers/vfio-pci/new_id")?;
guest.ssh_command_l1(
"sudo /mnt/ch-remote \
--api-socket=/tmp/ch_api.sock \
add-device path=/sys/bus/pci/devices/0000:00:07.0,id=vfio123",
)?;
thread::sleep(std::time::Duration::new(10, 0));
// Let's also verify from the third virtio-net device passed to
// the L2 VM. This third device has been hotplugged through the L2
// VM, so this is our way to validate hotplug works for VFIO PCI.
aver_eq!(
tb,
guest
.ssh_command_l2_3("grep -c VFIOTAG /proc/cmdline")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
// Check the amount of PCI devices appearing in L2 VM.
// There should be one more device than before, raising the count
// up to 8 PCI devices.
aver_eq!(
tb,
guest
.ssh_command_l2_1("ls /sys/bus/pci/devices | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
8,
);
// Let's now verify that we can correctly remove the virtio-net
// device through the "remove-device" command responsible for
// unplugging VFIO devices.
guest.ssh_command_l1(
"sudo /mnt/ch-remote \
--api-socket=/tmp/ch_api.sock \
remove-device vfio123",
)?;
thread::sleep(std::time::Duration::new(10, 0));
// Check the amount of PCI devices appearing in L2 VM is back down
// to 7 devices.
aver_eq!(
tb,
guest
.ssh_command_l2_1("ls /sys/bus/pci/devices | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
7,
);
// Perform memory hotplug in L2 and validate the memory is showing
// up as expected. In order to check, we will use the virtio-net
// device already passed through L2 as a VFIO device, this will
// verify that VFIO devices are functional with memory hotplug.
aver!(
tb,
guest.get_total_memory_l2().unwrap_or_default() > 491_000
);
guest.ssh_command_l2_1(
"sudo bash -c 'echo online > /sys/devices/system/memory/auto_online_blocks'",
)?;
guest.ssh_command_l1(
"sudo /mnt/ch-remote \
--api-socket=/tmp/ch_api.sock \
resize --memory=1073741824",
)?;
aver!(
tb,
guest.get_total_memory_l2().unwrap_or_default() > 982_000
);
let _ = child.kill();
let _ = daemon_child.kill();
let _ = child.wait();
let _ = daemon_child.wait();
Ok(())
});
}
#[cfg_attr(feature = "mmio", test)]
fn test_vmlinux_boot_noacpi() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&[
"--cmdline",
format!("{} acpi=off", CLEAR_KERNEL_CMDLINE).as_str(),
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 496_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_reboot() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let mut bionic = UbuntuDiskConfig::new(BIONIC_IMAGE_NAME.to_string());
let mut focal = UbuntuDiskConfig::new(FOCAL_IMAGE_NAME.to_string());
vec![
&mut clear as &mut dyn DiskConfig,
&mut bionic as &mut dyn DiskConfig,
&mut focal as &mut dyn DiskConfig,
]
.iter_mut()
.for_each(|disk_config| {
let guest = Guest::new(*disk_config);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.args(&["--serial", "tty", "--console", "off"])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1);
aver_eq!(tb, reboot_count, 0);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
guest
.ssh_command("sudo shutdown -h now")
.unwrap_or_default();
// Check that the cloud-hypervisor binary actually terminated
if let Ok(status) = child.wait() {
aver_eq!(tb, status.success(), true);
}
let _ = child.wait();
});
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_bzimage_reboot() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("bzImage");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1);
aver_eq!(tb, reboot_count, 0);
guest.ssh_command("sudo reboot")?;
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
guest.ssh_command("sudo shutdown -h now")?;
thread::sleep(std::time::Duration::new(20, 0));
// Check that the cloud-hypervisor binary actually terminated
if let Ok(status) = child.wait() {
aver_eq!(tb, status.success(), true);
}
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_vsock() {
_test_virtio_vsock(false)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_vsock_hotplug() {
_test_virtio_vsock(true);
}
fn _test_virtio_vsock(hotplug: bool) {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let sock = temp_vsock_path(&guest.tmp_dir);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut cmd = GuestCommand::new(&guest);
cmd.args(&["--api-socket", &api_socket]);
cmd.args(&["--cpus", "boot=1"]);
cmd.args(&["--memory", "size=512M"]);
cmd.args(&["--kernel", guest.fw_path.as_str()]);
cmd.default_disks();
cmd.default_net();
if !hotplug {
cmd.args(&["--vsock", format!("cid=3,sock={}", sock).as_str()]);
}
let mut child = cmd.spawn().unwrap();
thread::sleep(std::time::Duration::new(20, 0));
if hotplug {
aver!(
tb,
remote_command(
&api_socket,
"add-vsock",
Some(format!("cid=3,sock={},id=test0", sock).as_str())
)
);
thread::sleep(std::time::Duration::new(10, 0));
// Check adding a second one fails
aver!(
tb,
!remote_command(&api_socket, "add-vsock", Some("cid=1234,sock=/tmp/fail"))
);
}
// Listen from guest on vsock CID=3 PORT=16
// SOCKET-LISTEN:<domain>:<protocol>:<local-address>
let guest_ip = guest.network.guest_ip.clone();
let listen_socat = thread::spawn(move || {
ssh_command_ip("sudo socat - SOCKET-LISTEN:40:0:x00x00x10x00x00x00x03x00x00x00x00x00x00x00 > vsock_log", &guest_ip, DEFAULT_SSH_RETRIES, DEFAULT_SSH_TIMEOUT).unwrap();
});
// Make sure socat is listening, which might take a few second on slow systems
thread::sleep(std::time::Duration::new(10, 0));
// Write something to vsock from the host
Command::new("bash")
.arg("-c")
.arg(
format!(
"echo -e \"CONNECT 16\\nHelloWorld!\" | socat - UNIX-CONNECT:{}",
sock
)
.as_str(),
)
.output()
.unwrap();
// Wait for the thread to terminate.
listen_socat.join().unwrap();
assert_eq!(
guest.ssh_command("cat vsock_log").unwrap().trim(),
"HelloWorld!"
);
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1);
aver_eq!(tb, reboot_count, 0);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(30, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
// Listen from guest on vsock CID=3 PORT=16
// SOCKET-LISTEN:<domain>:<protocol>:<local-address>
let guest_ip = guest.network.guest_ip.clone();
let listen_socat = thread::spawn(move || {
ssh_command_ip("sudo socat - SOCKET-LISTEN:40:0:x00x00x10x00x00x00x03x00x00x00x00x00x00x00 > vsock_log", &guest_ip, DEFAULT_SSH_RETRIES, DEFAULT_SSH_TIMEOUT).unwrap();
});
// Make sure socat is listening, which might take a few second on slow systems
thread::sleep(std::time::Duration::new(10, 0));
// Write something to vsock from the host
Command::new("bash")
.arg("-c")
.arg(
format!(
"echo -e \"CONNECT 16\\nHelloWorld!\" | socat - UNIX-CONNECT:{}",
sock
)
.as_str(),
)
.output()
.unwrap();
// Wait for the thread to terminate.
listen_socat.join().unwrap();
assert_eq!(
guest.ssh_command("cat vsock_log").unwrap().trim(),
"HelloWorld!"
);
if hotplug {
aver!(
tb,
remote_command(&api_socket, "remove-device", Some("test0"))
);
}
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
// Start cloud-hypervisor with no VM parameters, only the API server running.
// From the API: Create a VM, boot it and check that it looks as expected.
fn test_api_create_boot() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let api_socket = temp_api_path(&guest.tmp_dir);
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(1, 0));
// Verify API server is running
curl_command(&api_socket, "GET", "http://localhost/api/v1/vmm.ping", None);
// Create the VM first
let cpu_count: u8 = 4;
let http_body = guest.api_create_body(cpu_count);
curl_command(
&api_socket,
"PUT",
"http://localhost/api/v1/vm.create",
Some(&http_body),
);
// Then boot it
curl_command(&api_socket, "PUT", "http://localhost/api/v1/vm.boot", None);
thread::sleep(std::time::Duration::new(20, 0));
// Check that the VM booted as expected
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default() as u8,
cpu_count
);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 491_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
// Start cloud-hypervisor with no VM parameters, only the API server running.
// From the API: Create a VM, boot it and check that it looks as expected.
// Then we pause the VM, check that it's no longer available.
// Finally we resume the VM and check that it's available.
fn test_api_pause_resume() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let api_socket = temp_api_path(&guest.tmp_dir);
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(1, 0));
// Verify API server is running
curl_command(&api_socket, "GET", "http://localhost/api/v1/vmm.ping", None);
// Create the VM first
let cpu_count: u8 = 4;
let http_body = guest.api_create_body(cpu_count);
curl_command(
&api_socket,
"PUT",
"http://localhost/api/v1/vm.create",
Some(&http_body),
);
// Then boot it
curl_command(&api_socket, "PUT", "http://localhost/api/v1/vm.boot", None);
thread::sleep(std::time::Duration::new(20, 0));
// Check that the VM booted as expected
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default() as u8,
cpu_count
);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 491_000);
aver!(tb, guest.get_entropy().unwrap_or_default() >= 900);
// We now pause the VM
aver!(tb, remote_command(&api_socket, "pause", None));
// Check pausing again fails
aver!(tb, !remote_command(&api_socket, "pause", None));
thread::sleep(std::time::Duration::new(2, 0));
// SSH into the VM should fail
aver!(
tb,
ssh_command_ip(
"grep -c processor /proc/cpuinfo",
&guest.network.guest_ip,
2,
5
)
.is_err()
);
// Resume the VM
aver!(tb, remote_command(&api_socket, "resume", None));
// Check resuming again fails
aver!(tb, !remote_command(&api_socket, "resume", None));
thread::sleep(std::time::Duration::new(2, 0));
// Now we should be able to SSH back in and get the right number of CPUs
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default() as u8,
cpu_count
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
// This test validates that it can find the virtio-iommu device at first.
// It also verifies that both disks and the network card are attached to
// the virtual IOMMU by looking at /sys/kernel/iommu_groups directory.
// The last interesting part of this test is that it exercises the network
// interface attached to the virtual IOMMU since this is the one used to
// send all commands through SSH.
fn test_virtio_iommu() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("bzImage");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&[
"--disk",
format!(
"path={},iommu=on",
guest.disk_config.disk(DiskType::OperatingSystem).unwrap()
)
.as_str(),
format!(
"path={},iommu=on",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
.as_str(),
])
.args(&["--net", guest.default_net_string_w_iommu().as_str()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Verify the virtio-iommu device is present.
#[cfg(not(feature = "mmio"))]
aver!(
tb,
guest
.does_device_vendor_pair_match("0x1057", "0x1af4")
.unwrap_or_default()
);
// Verify the first disk is located under IOMMU group 0.
aver_eq!(
tb,
guest
.ssh_command("ls /sys/kernel/iommu_groups/0/devices")
.unwrap()
.trim(),
"0000:00:02.0"
);
// Verify the second disk is located under IOMMU group 1.
aver_eq!(
tb,
guest
.ssh_command("ls /sys/kernel/iommu_groups/1/devices")
.unwrap()
.trim(),
"0000:00:03.0"
);
// Verify the network card is located under IOMMU group 2.
aver_eq!(
tb,
guest
.ssh_command("ls /sys/kernel/iommu_groups/2/devices")
.unwrap()
.trim(),
"0000:00:04.0"
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
// We cannot force the software running in the guest to reprogram the BAR
// with some different addresses, but we have a reliable way of testing it
// with a standard Linux kernel.
// By removing a device from the PCI tree, and then rescanning the tree,
// Linux consistently chooses to reorganize the PCI device BARs to other
// locations in the guest address space.
// This test creates a dedicated PCI network device to be checked as being
// properly probed first, then removing it, and adding it again by doing a
// rescan.
#[cfg_attr(not(feature = "mmio"), test)]
fn test_pci_bar_reprogramming() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.args(&[
"--net",
guest.default_net_string().as_str(),
"tap=,mac=8a:6b:6f:5a:de:ac,ip=192.168.3.1,mask=255.255.255.0",
])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// 2 network interfaces + default localhost ==> 3 interfaces
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
3
);
let init_bar_addr = guest.ssh_command(
"sudo awk '{print $1; exit}' /sys/bus/pci/devices/0000:00:05.0/resource",
)?;
// Remove the PCI device
guest.ssh_command("echo 1 | sudo tee /sys/bus/pci/devices/0000:00:05.0/remove")?;
// Only 1 network interface left + default localhost ==> 2 interfaces
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
2
);
// Remove the PCI device
guest.ssh_command("echo 1 | sudo tee /sys/bus/pci/rescan")?;
// Back to 2 network interface + default localhost ==> 3 interfaces
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
3
);
let new_bar_addr = guest.ssh_command(
"sudo awk '{print $1; exit}' /sys/bus/pci/devices/0000:00:05.0/resource",
)?;
// Let's compare the BAR addresses for our virtio-net device.
// They should be different as we expect the BAR reprogramming
// to have happened.
aver_ne!(tb, init_bar_addr, new_bar_addr);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
fn get_pss(pid: u32) -> u32 {
let smaps = fs::File::open(format!("/proc/{}/smaps", pid)).unwrap();
let reader = io::BufReader::new(smaps);
let mut total = 0;
for line in reader.lines() {
let l = line.unwrap();
// Lines look like this:
// Pss: 176 kB
if l.contains("Pss") {
let values: Vec<&str> = l.rsplit(' ').collect();
total += values[1].trim().parse::<u32>().unwrap()
}
}
total
}
fn test_memory_mergeable(mergeable: bool) {
test_block!(tb, "", {
let memory_param = if mergeable {
"mergeable=on"
} else {
"mergeable=off"
};
let mut clear1 = ClearDiskConfig::new();
let mut clear2 = ClearDiskConfig::new();
let guest1 = Guest::new(&mut clear1 as &mut dyn DiskConfig);
let mut child1 = GuestCommand::new(&guest1)
.args(&["--cpus", "boot=1"])
.args(&["--memory", format!("size=512M,{}", memory_param).as_str()])
.args(&["--kernel", guest1.fw_path.as_str()])
.default_disks()
.args(&["--net", guest1.default_net_string().as_str()])
.args(&["--serial", "tty", "--console", "off"])
.spawn()
.unwrap();
// Let enough time for the first VM to be spawned, and to make
// sure the PSS measurement is accurate.
thread::sleep(std::time::Duration::new(60, 0));
// Get initial PSS
let old_pss = get_pss(child1.id());
let guest2 = Guest::new(&mut clear2 as &mut dyn DiskConfig);
let mut child2 = GuestCommand::new(&guest2)
.args(&["--cpus", "boot=1"])
.args(&["--memory", format!("size=512M,{}", memory_param).as_str()])
.args(&["--kernel", guest2.fw_path.as_str()])
.default_disks()
.args(&["--net", guest2.default_net_string().as_str()])
.args(&["--serial", "tty", "--console", "off"])
.spawn()
.unwrap();
// Let enough time for the second VM to be spawned, and to make
// sure KSM has enough time to merge identical pages between the
// 2 VMs.
thread::sleep(std::time::Duration::new(60, 0));
// Get new PSS
let new_pss = get_pss(child1.id());
// Convert PSS from u32 into float.
let old_pss = old_pss as f32;
let new_pss = new_pss as f32;
if mergeable {
aver!(tb, new_pss < (old_pss * 0.95));
} else {
aver!(tb, (old_pss * 0.95) < new_pss && new_pss < (old_pss * 1.05));
}
let _ = child1.kill();
let _ = child2.kill();
let _ = child1.wait();
let _ = child2.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_memory_mergeable_on() {
test_memory_mergeable(true)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_memory_mergeable_off() {
test_memory_mergeable(false)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_cpu_hotplug() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=2,max=4"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.default_disks()
.default_net()
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 2);
// Resize the VM
let desired_vcpus = 4;
resize_command(&api_socket, Some(desired_vcpus), None);
guest.ssh_command("echo 1 | sudo tee /sys/bus/cpu/devices/cpu2/online")?;
guest.ssh_command("echo 1 | sudo tee /sys/bus/cpu/devices/cpu3/online")?;
thread::sleep(std::time::Duration::new(10, 0));
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default(),
u32::from(desired_vcpus)
);
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1);
aver_eq!(tb, reboot_count, 0);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(30, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default(),
u32::from(desired_vcpus)
);
// Resize the VM
let desired_vcpus = 2;
resize_command(&api_socket, Some(desired_vcpus), None);
thread::sleep(std::time::Duration::new(10, 0));
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default(),
u32::from(desired_vcpus)
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_memory_hotplug() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=2,max=4"])
.args(&["--memory", "size=512M,hotplug_size=8192M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.default_disks()
.default_net()
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 491_000);
guest
.ssh_command("echo online | sudo tee /sys/devices/system/memory/auto_online_blocks")
.unwrap_or_default();
// Add RAM to the VM
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1);
aver_eq!(tb, reboot_count, 0);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(30, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
guest
.ssh_command("echo online | sudo tee /sys/devices/system/memory/auto_online_blocks")
.unwrap_or_default();
// Add RAM to the VM
let desired_ram = 2048 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 1_964_000);
// Remove RAM to the VM (only applies after reboot)
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(30, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 2);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
aver!(tb, guest.get_total_memory().unwrap_or_default() < 1_964_000);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_mem() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=2,max=4"])
.args(&["--memory", "size=512M,hotplug_method=virtio-mem,hotplug_size=8192M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", "root=PARTUUID=6fb4d1a8-6c8c-4dd7-9f7c-1fe0b9f2574c console=tty0 console=ttyS0,115200n8 console=hvc0 quiet init=/usr/lib/systemd/systemd-bootchart initcall_debug tsc=reliable no_timer_check noreplace-smp cryptomgr.notests rootfstype=ext4,btrfs,xfs kvm-intel.nested=1 rw"])
.default_disks()
.default_net()
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 491_000);
guest
.ssh_command("echo online | sudo tee /sys/devices/system/memory/auto_online_blocks")
.unwrap_or_default();
// Add RAM to the VM
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
// Add RAM to the VM
let desired_ram = 2048 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 1_964_000);
// Remove RAM to the VM
let desired_ram = 1024 << 20;
resize_command(&api_socket, None, Some(desired_ram));
thread::sleep(std::time::Duration::new(10, 0));
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
aver!(tb, guest.get_total_memory().unwrap_or_default() < 1_964_000);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
// Test both vCPU and memory resizing together
#[cfg_attr(not(feature = "mmio"), test)]
fn test_resize() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=2,max=4"])
.args(&["--memory", "size=512M,hotplug_size=8192M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.default_disks()
.default_net()
.args(&["--api-socket", &api_socket])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 2);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 491_000);
guest
.ssh_command("echo online | sudo tee /sys/devices/system/memory/auto_online_blocks")
.unwrap_or_default();
// Resize the VM
let desired_vcpus = 4;
let desired_ram = 1024 << 20;
resize_command(&api_socket, Some(desired_vcpus), Some(desired_ram));
guest.ssh_command("echo 1 | sudo tee /sys/bus/cpu/devices/cpu2/online")?;
guest.ssh_command("echo 1 | sudo tee /sys/bus/cpu/devices/cpu3/online")?;
thread::sleep(std::time::Duration::new(10, 0));
aver_eq!(
tb,
guest.get_cpu_count().unwrap_or_default(),
u32::from(desired_vcpus)
);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 982_000);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
fn _get_vmm_overhead(pid: u32, guest_memory_size: u32) -> HashMap<String, u32> {
let smaps = fs::File::open(format!("/proc/{}/smaps", pid)).unwrap();
let reader = io::BufReader::new(smaps);
let mut skip_map: bool = false;
let mut region_name: String = "".to_string();
let mut region_maps = HashMap::new();
for line in reader.lines() {
let l = line.unwrap();
if l.contains('-') {
let values: Vec<&str> = l.split_whitespace().collect();
region_name = values.last().unwrap().trim().to_string();
if region_name == "0" {
region_name = "anonymous".to_string()
}
}
// Each section begins with something that looks like:
// Size: 2184 kB
if l.starts_with("Size:") {
let values: Vec<&str> = l.split_whitespace().collect();
let map_size = values[1].parse::<u32>().unwrap();
// We skip the assigned guest RAM map, its RSS is only
// dependent on the guest actual memory usage.
// Everything else can be added to the VMM overhead.
skip_map = map_size >= guest_memory_size;
continue;
}
// If this is a map we're taking into account, then we only
// count the RSS. The sum of all counted RSS is the VMM overhead.
if !skip_map && l.starts_with("Rss:") {
let values: Vec<&str> = l.split_whitespace().collect();
let value = values[1].trim().parse::<u32>().unwrap();
*region_maps.entry(region_name.clone()).or_insert(0) += value;
}
}
region_maps
}
fn get_vmm_overhead(pid: u32, guest_memory_size: u32) -> u32 {
let mut total = 0;
for (region_name, value) in &_get_vmm_overhead(pid, guest_memory_size) {
eprintln!("{}: {}", region_name, value);
total += value;
}
total
}
// 10MB is our maximum accepted overhead.
const MAXIMUM_VMM_OVERHEAD_KB: u32 = 10 * 1024;
#[cfg_attr(not(feature = "mmio"), test)]
fn test_memory_overhead() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
let guest_memory_size_kb = 512 * 1024;
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=1"])
.args(&[
"--memory",
format!("size={}K", guest_memory_size_kb).as_str(),
])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
let overhead = get_vmm_overhead(child.id(), guest_memory_size_kb);
eprintln!(
"Guest memory overhead: {} vs {}",
overhead, MAXIMUM_VMM_OVERHEAD_KB
);
aver!(tb, overhead <= MAXIMUM_VMM_OVERHEAD_KB);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_disk_hotplug() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Check /dev/vdc is not there
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
let mut blk_file_path = dirs::home_dir().unwrap();
blk_file_path.push("workloads");
blk_file_path.push("blk.img");
aver!(
tb,
remote_command(
&api_socket,
"add-disk",
Some(&format!(
"path={},id=test0",
blk_file_path.to_str().unwrap()
))
)
);
// Check that if /dev/vdc exists and the block size is 16M.
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
// Check still there after reboot
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
aver!(
tb,
remote_command(&api_socket, "remove-device", Some("test0"))
);
thread::sleep(std::time::Duration::new(20, 0));
// Check device has gone away
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 2);
// Check device still absent
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep vdc | grep -c 16M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_pmem_hotplug() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.default_net()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Check /dev/pmem0 is not there
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep -c pmem0")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
let mut pmem_temp_file = NamedTempFile::new().unwrap();
pmem_temp_file.as_file_mut().set_len(128 << 20).unwrap();
aver!(
tb,
remote_command(
&api_socket,
"add-pmem",
Some(&format!(
"file={},id=test0",
pmem_temp_file.path().to_str().unwrap()
))
)
);
// Check that /dev/pmem0 exists and the block size is 128M
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep pmem0 | grep -c 128M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
// Check still there after reboot
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep pmem0 | grep -c 128M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
1
);
aver!(
tb,
remote_command(&api_socket, "remove-device", Some("test0"))
);
thread::sleep(std::time::Duration::new(20, 0));
// Check device has gone away
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep pmem0 | grep -c 128M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 2);
// Check still absent after reboot
aver_eq!(
tb,
guest
.ssh_command("lsblk | grep pmem0 | grep -c 128M")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or(1),
0
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_net_hotplug() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let api_socket = temp_api_path(&guest.tmp_dir);
// Boot without network
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", guest.fw_path.as_str()])
.default_disks()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Add network
aver!(
tb,
remote_command(
&api_socket,
"add-net",
Some(guest.default_net_string().as_str())
)
);
// 1 network interfaces + default localhost ==> 2 interfaces
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
2
);
guest.ssh_command("sudo reboot").unwrap_or_default();
thread::sleep(std::time::Duration::new(20, 0));
let reboot_count = guest
.ssh_command("sudo journalctl | grep -c -- \"-- Reboot --\"")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default();
aver_eq!(tb, reboot_count, 1);
// Check still there after reboot
// 1 network interfaces + default localhost ==> 2 interfaces
aver_eq!(
tb,
guest
.ssh_command("ip -o link | wc -l")
.unwrap_or_default()
.trim()
.parse::<u32>()
.unwrap_or_default(),
2
);
let _ = child.kill();
let _ = child.wait();
Ok(())
});
}
#[test]
fn test_initramfs() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path.clone();
kernel_path.push("vmlinux");
let mut pvh_kernel_path = workload_path.clone();
pvh_kernel_path.push("vmlinux.pvh");
let mut initramfs_path = workload_path;
initramfs_path.push("alpine_initramfs.img");
let test_string = String::from("axz34i9rylotd8n50wbv6kcj7f2qushme1pg");
let cmdline = format!("console=hvc0 quiet TEST_STRING={}", test_string);
vec![kernel_path, pvh_kernel_path]
.iter()
.for_each(|k_path| {
let mut child = GuestCommand::new(&guest)
.args(&["--kernel", k_path.to_str().unwrap()])
.args(&["--initramfs", initramfs_path.to_str().unwrap()])
.args(&["--cmdline", &cmdline])
.capture_output()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
let _ = child.kill();
match child.wait_with_output() {
Ok(out) => {
let s = String::from_utf8_lossy(&out.stdout);
aver_ne!(tb, s.lines().position(|line| line == test_string), None);
}
Err(_) => aver!(tb, false),
}
});
Ok(())
});
}
// One thing to note about this test. The virtio-net device is heavily used
// through each ssh command. There's no need to perform a dedicated test to
// verify the migration went well for virtio-net.
#[test]
fn test_snapshot_restore() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
let guest = Guest::new(&mut clear);
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("bzImage");
let api_socket = temp_api_path(&guest.tmp_dir);
let net_id = "net123";
let net_params = format!(
"id={},tap=,mac={},ip={},mask=255.255.255.0",
net_id, guest.network.guest_mac, guest.network.host_ip
);
let cloudinit_params = if cfg!(feature = "mmio") {
format!(
"path={}",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
} else {
format!(
"path={},iommu=on",
guest.disk_config.disk(DiskType::CloudInit).unwrap()
)
};
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.args(&["--cpus", "boot=1"])
.args(&["--memory", "size=4G"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&[
"--disk",
format!(
"path={}",
guest.disk_config.disk(DiskType::OperatingSystem).unwrap()
)
.as_str(),
cloudinit_params.as_str(),
])
.args(&["--net", net_params.as_str()])
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.capture_output()
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Check the number of vCPUs
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
// Check the guest RAM
aver!(tb, guest.get_total_memory().unwrap_or_default() > 3_968_000);
// Check block devices are readable
aver!(
tb,
guest
.ssh_command("dd if=/dev/vda of=/dev/null bs=1M iflag=direct count=1024")
.is_ok()
);
aver!(
tb,
guest
.ssh_command("dd if=/dev/vdb of=/dev/null bs=1M iflag=direct count=8")
.is_ok()
);
// Check if the rng device is readable
aver!(
tb,
guest
.ssh_command("head -c 1000 /dev/hwrng > /dev/null")
.is_ok()
);
// Check if the console is usable
let console_text = String::from("On a branch floating down river a cricket, singing.");
let console_cmd = format!("echo {} | sudo tee /dev/hvc0", console_text);
aver!(tb, guest.ssh_command(&console_cmd).is_ok());
// Only for PCI, we can check that removing and adding back the
// virtio-net device does not break the snapshot/restore support
// for virtio-pci. This is an important thing to test as the
// hotplug will trigger a PCI BAR reprogramming, which is a good
// way of checking if the stored resources are correctly restored.
#[cfg(not(feature = "mmio"))]
{
// Unplug the virtio-net device
aver!(
tb,
remote_command(&api_socket, "remove-device", Some(net_id),)
);
thread::sleep(std::time::Duration::new(10, 0));
// Plug the virtio-net device again
aver!(
tb,
remote_command(&api_socket, "add-net", Some(net_params.as_str()),)
);
thread::sleep(std::time::Duration::new(10, 0));
}
// Pause the VM
aver!(tb, remote_command(&api_socket, "pause", None));
// Create the snapshot directory
let snapshot_dir = temp_snapshot_dir_path(&guest.tmp_dir);
// Take a snapshot from the VM
aver!(
tb,
remote_command(
&api_socket,
"snapshot",
Some(format!("file://{}", snapshot_dir).as_str()),
)
);
// Wait to make sure the snapshot is completed
thread::sleep(std::time::Duration::new(10, 0));
// Shutdown the source VM and check console output
let _ = child.kill();
match child.wait_with_output() {
Ok(out) => {
aver!(
tb,
String::from_utf8_lossy(&out.stdout).contains(&console_text)
);
}
Err(_) => aver!(tb, false),
}
// Restore the VM from the snapshot
let mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.args(&[
"--restore",
format!("source_url=file://{}", snapshot_dir).as_str(),
])
.capture_output()
.spawn()
.unwrap();
// Wait for the VM to be restored
thread::sleep(std::time::Duration::new(10, 0));
// Perform same checks to validate VM has been properly restored
aver_eq!(tb, guest.get_cpu_count().unwrap_or_default(), 1);
aver!(tb, guest.get_total_memory().unwrap_or_default() > 3_968_000);
aver!(
tb,
guest
.ssh_command("dd if=/dev/vda of=/dev/null bs=1M iflag=direct count=1024")
.is_ok()
);
aver!(
tb,
guest
.ssh_command("dd if=/dev/vdb of=/dev/null bs=1M iflag=direct count=8")
.is_ok()
);
aver!(
tb,
guest
.ssh_command("head -c 1000 /dev/hwrng > /dev/null")
.is_ok()
);
aver!(tb, guest.ssh_command(&console_cmd).is_ok());
// Shutdown the target VM and check console output
let _ = child.kill();
match child.wait_with_output() {
Ok(out) => {
aver!(
tb,
String::from_utf8_lossy(&out.stdout).contains(&console_text)
);
}
Err(_) => aver!(tb, false),
}
Ok(())
});
}
}
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