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https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2024-12-22 13:45:20 +00:00
tests: Add test_snapshot_restore_with_fd to integration tests
VM is created with FDs explicitly passed to CH via --net parameter and snapshotted. New net FDs are passed in turn during restore. Boilerplate code from _test_snapshot_restore(). Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
This commit is contained in:
Purna Pavan Chandra
Rob Bradford
parent
26670e4778
commit
6d74393833
@ -2351,6 +2351,48 @@ mod common_parallel {
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use crate::*;
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fn snapshot_and_check_events(api_socket: &str, snapshot_dir: &str, event_path: &str) {
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// Pause the VM
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assert!(remote_command(api_socket, "pause", None));
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let latest_events: [&MetaEvent; 2] = [
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&MetaEvent {
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event: "pausing".to_string(),
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device_id: None,
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},
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&MetaEvent {
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event: "paused".to_string(),
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device_id: None,
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},
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];
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// See: #5938
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thread::sleep(std::time::Duration::new(1, 0));
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assert!(check_latest_events_exact(&latest_events, event_path));
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// Take a snapshot from the VM
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assert!(remote_command(
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api_socket,
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"snapshot",
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Some(format!("file://{snapshot_dir}").as_str()),
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));
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// Wait to make sure the snapshot is completed
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thread::sleep(std::time::Duration::new(10, 0));
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let latest_events = [
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&MetaEvent {
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event: "snapshotting".to_string(),
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device_id: None,
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},
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&MetaEvent {
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event: "snapshotted".to_string(),
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device_id: None,
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},
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];
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// See: #5938
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thread::sleep(std::time::Duration::new(1, 0));
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assert!(check_latest_events_exact(&latest_events, event_path));
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}
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#[test]
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#[cfg(target_arch = "x86_64")]
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fn test_focal_hypervisor_fw() {
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@ -6122,45 +6164,7 @@ mod common_parallel {
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thread::sleep(std::time::Duration::new(10, 0));
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}
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// Pause the VM
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assert!(remote_command(&api_socket_source, "pause", None));
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let latest_events = [
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&MetaEvent {
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event: "pausing".to_string(),
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device_id: None,
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},
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&MetaEvent {
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event: "paused".to_string(),
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device_id: None,
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},
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];
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// See: #5938
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thread::sleep(std::time::Duration::new(1, 0));
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assert!(check_latest_events_exact(&latest_events, &event_path));
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// Take a snapshot from the VM
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assert!(remote_command(
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&api_socket_source,
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"snapshot",
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Some(format!("file://{snapshot_dir}").as_str()),
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));
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// Wait to make sure the snapshot is completed
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thread::sleep(std::time::Duration::new(10, 0));
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let latest_events = [
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&MetaEvent {
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event: "snapshotting".to_string(),
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device_id: None,
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},
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&MetaEvent {
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event: "snapshotted".to_string(),
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device_id: None,
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},
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];
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// See: #5938
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thread::sleep(std::time::Duration::new(1, 0));
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assert!(check_latest_events_exact(&latest_events, &event_path));
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snapshot_and_check_events(&api_socket_source, &snapshot_dir, &event_path);
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});
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// Shutdown the source VM and check console output
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@ -6293,6 +6297,224 @@ mod common_parallel {
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handle_child_output(r, &output);
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}
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#[test]
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fn test_snapshot_restore_with_fd() {
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let focal = UbuntuDiskConfig::new(FOCAL_IMAGE_NAME.to_string());
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let guest = Guest::new(Box::new(focal));
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let kernel_path = direct_kernel_boot_path();
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let api_socket_source = format!("{}.1", temp_api_path(&guest.tmp_dir));
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let net_id = "net123";
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let num_queue_pairs: usize = 2;
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// use a name that does not conflict with tap dev created from other tests
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let tap_name = "chtap999";
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use std::str::FromStr;
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let taps = net_util::open_tap(
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Some(tap_name),
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Some(std::net::Ipv4Addr::from_str(&guest.network.host_ip).unwrap()),
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None,
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&mut None,
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None,
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num_queue_pairs,
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Some(libc::O_RDWR | libc::O_NONBLOCK),
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)
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.unwrap();
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let net_params = format!(
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"id={},fd=[{},{}],mac={},ip={},mask=255.255.255.0,num_queues={}",
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net_id,
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taps[0].as_raw_fd(),
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taps[1].as_raw_fd(),
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guest.network.guest_mac,
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guest.network.host_ip,
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num_queue_pairs * 2
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);
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let cloudinit_params = format!(
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"path={},iommu=on",
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guest.disk_config.disk(DiskType::CloudInit).unwrap()
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);
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let n_cpu = 2;
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let event_path = temp_event_monitor_path(&guest.tmp_dir);
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let mut child = GuestCommand::new(&guest)
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.args(["--api-socket", &api_socket_source])
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.args(["--event-monitor", format!("path={event_path}").as_str()])
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.args(["--cpus", format!("boot={}", n_cpu).as_str()])
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.args(["--memory", "size=1G"])
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.args(["--kernel", kernel_path.to_str().unwrap()])
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.args([
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"--disk",
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format!(
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"path={}",
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guest.disk_config.disk(DiskType::OperatingSystem).unwrap()
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)
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.as_str(),
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cloudinit_params.as_str(),
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])
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.args(["--net", net_params.as_str()])
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.args(["--cmdline", DIRECT_KERNEL_BOOT_CMDLINE])
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.capture_output()
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.spawn()
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.unwrap();
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let console_text = String::from("On a branch floating down river a cricket, singing.");
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// Create the snapshot directory
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let snapshot_dir = temp_snapshot_dir_path(&guest.tmp_dir);
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let r = std::panic::catch_unwind(|| {
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guest.wait_vm_boot(None).unwrap();
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// close the fds after VM boots, as CH duplicates them before using
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for tap in taps.iter() {
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unsafe { libc::close(tap.as_raw_fd()) };
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}
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// Check the number of vCPUs
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assert_eq!(guest.get_cpu_count().unwrap_or_default(), n_cpu);
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// Check the guest RAM
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assert!(guest.get_total_memory().unwrap_or_default() > 960_000);
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// Check the guest virtio-devices, e.g. block, rng, vsock, console, and net
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guest.check_devices_common(None, Some(&console_text), None);
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snapshot_and_check_events(&api_socket_source, &snapshot_dir, &event_path);
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});
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// Shutdown the source VM and check console output
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let _ = child.kill();
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let output = child.wait_with_output().unwrap();
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handle_child_output(r, &output);
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let r = std::panic::catch_unwind(|| {
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assert!(String::from_utf8_lossy(&output.stdout).contains(&console_text));
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});
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handle_child_output(r, &output);
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let api_socket_restored = format!("{}.2", temp_api_path(&guest.tmp_dir));
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let event_path_restored = format!("{}.2", temp_event_monitor_path(&guest.tmp_dir));
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// Restore the VM from the snapshot
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let mut child = GuestCommand::new(&guest)
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.args(["--api-socket", &api_socket_restored])
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.args([
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"--event-monitor",
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format!("path={event_path_restored}").as_str(),
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])
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.capture_output()
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.spawn()
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.unwrap();
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thread::sleep(std::time::Duration::new(2, 0));
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let taps = net_util::open_tap(
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Some(tap_name),
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Some(std::net::Ipv4Addr::from_str(&guest.network.host_ip).unwrap()),
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None,
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&mut None,
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None,
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num_queue_pairs,
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Some(libc::O_RDWR | libc::O_NONBLOCK),
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)
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.unwrap();
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let restore_params = format!(
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"source_url=file://{},net_fds=[{}@[{},{}]]",
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snapshot_dir,
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net_id,
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taps[0].as_raw_fd(),
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taps[1].as_raw_fd()
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);
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assert!(remote_command(
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&api_socket_restored,
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"restore",
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Some(restore_params.as_str())
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));
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// Wait for the VM to be restored
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thread::sleep(std::time::Duration::new(20, 0));
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// close the fds as CH duplicates them before using
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for tap in taps.iter() {
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unsafe { libc::close(tap.as_raw_fd()) };
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}
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let expected_events = [
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&MetaEvent {
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event: "starting".to_string(),
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device_id: None,
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},
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&MetaEvent {
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event: "activated".to_string(),
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device_id: Some("__console".to_string()),
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},
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&MetaEvent {
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event: "activated".to_string(),
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device_id: Some("__rng".to_string()),
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},
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&MetaEvent {
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event: "restoring".to_string(),
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device_id: None,
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},
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];
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assert!(check_sequential_events(
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&expected_events,
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&event_path_restored
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));
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let latest_events = [&MetaEvent {
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event: "restored".to_string(),
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device_id: None,
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}];
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assert!(check_latest_events_exact(
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&latest_events,
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&event_path_restored
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));
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// Remove the snapshot dir
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let _ = remove_dir_all(snapshot_dir.as_str());
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let r = std::panic::catch_unwind(|| {
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// Resume the VM
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assert!(remote_command(&api_socket_restored, "resume", None));
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// There is no way that we can ensure the 'write()' to the
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// event file is completed when the 'resume' request is
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// returned successfully, because the 'write()' was done
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// asynchronously from a different thread of Cloud
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// Hypervisor (e.g. the event-monitor thread).
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thread::sleep(std::time::Duration::new(1, 0));
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let latest_events = [
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&MetaEvent {
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event: "resuming".to_string(),
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device_id: None,
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},
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&MetaEvent {
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event: "resumed".to_string(),
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device_id: None,
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},
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];
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assert!(check_latest_events_exact(
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&latest_events,
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&event_path_restored
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));
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// Perform same checks to validate VM has been properly restored
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assert_eq!(guest.get_cpu_count().unwrap_or_default(), n_cpu);
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assert!(guest.get_total_memory().unwrap_or_default() > 960_000);
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guest.check_devices_common(None, Some(&console_text), None);
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});
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// Shutdown the target VM and check console output
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let _ = child.kill();
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let output = child.wait_with_output().unwrap();
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handle_child_output(r, &output);
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let r = std::panic::catch_unwind(|| {
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assert!(String::from_utf8_lossy(&output.stdout).contains(&console_text));
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});
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handle_child_output(r, &output);
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}
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#[test]
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fn test_counters() {
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let focal = UbuntuDiskConfig::new(FOCAL_IMAGE_NAME.to_string());
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