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3f42f86d81
cloud-hypervisor/tests/integration.rs
Bo Chen 3f42f86d81 vmm: Add the 'shared' and 'hugepages' controls to MemoryConfig 
The new 'shared' and 'hugepages' controls aim to replace the 'file'
option in MemoryConfig. This patch also updated all related integration
tests to use the new controls (instead of providing explicit paths to
"/dev/shm" or "/dev/hugepages").

Fixes: #1011

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-04-23 21:39:51 +02:00

4178 lines
143 KiB
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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 ssh2::Session;
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())
}
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("target/release/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("target/release/cloud-hypervisor")
.args(&[
"--block-backend",
format!(
"image={},sock={},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,sock={},num_queues={},queue_size=1024",
tap_str, ip, vunet_socket_path, num_queues
)
} else {
format!(
"ip={},mask=255.255.255.0,sock={},num_queues={},queue_size=1024",
ip, vunet_socket_path, num_queues
)
};
let child = Command::new("target/release/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("target/release/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("target/release/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("target/release/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_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=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,
) {
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 (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,
),
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,
),
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));
// 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)
}
#[test]
fn test_vhost_user_net_tap() {
test_vhost_user_net(
Some("vunet-tap0"),
2,
Some(&prepare_vhost_user_net_daemon),
false,
)
}
#[test]
fn test_vhost_user_net_multiple_queues() {
test_vhost_user_net(None, 4, Some(&prepare_vhost_user_net_daemon), 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,
)
}
#[test]
fn test_vhost_user_net_self_spawning() {
test_vhost_user_net(None, 4, None, 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!(
"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"
);
}
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)
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_virtio_pmem_discard_writes() {
test_virtio_pmem(true)
}
fn test_virtio_pmem(discard_writes: 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={},size={}{}",
pmem_temp_file.path().to_str().unwrap(),
"128M",
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=,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));
// 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(())
});
}
#[cfg_attr(not(feature = "mmio"), test)]
fn test_serial_off() {
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", "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(not(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);
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_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_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 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(&["--vsock", format!("cid=3,sock={}", sock).as_str()])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// 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 _ = 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) -> u32 {
let smaps = fs::File::open(format!("/proc/{}/smaps", pid)).unwrap();
let reader = io::BufReader::new(smaps);
let mut total = 0;
let mut skip_map: bool = false;
for line in reader.lines() {
let l = line.unwrap();
// 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();
total += values[1].trim().parse::<u32>().unwrap();
}
}
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()
.default_net()
.args(&["--cmdline", CLEAR_KERNEL_CMDLINE])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
aver!(
tb,
get_vmm_overhead(child.id(), guest_memory_size_kb) <= 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={},size=128M,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.
#[ignore]
#[cfg_attr(feature = "mmio", 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 mut child = GuestCommand::new(&guest)
.args(&["--api-socket", &api_socket])
.args(&["--cpus", "boot=4"])
.args(&["--memory", "size=4G"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.default_disks()
.default_net()
.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(), 4);
// Check the guest RAM
aver!(tb, guest.get_total_memory().unwrap_or_default() > 3_968_000);
// Check if the block device is readable
aver!(
tb,
guest
.ssh_command("dd if=/dev/vda of=/dev/null bs=1M iflag=direct count=1024")
.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());
// 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(), 4);
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("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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