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tests: Add "discard_writes" pmem test

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Factorise test_virtio_pmem to test changes are not persisted if file is
readonly.

As virtio-mem is now supported in the upstream kernel we can switch to
using the firmware.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2020-03-19 10:48:17 +00:00 committed by Sebastien Boeuf
parent 70986022d8
commit bdcfe1efbd
1 changed files with 60 additions and 9 deletions
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69
tests/integration.rs
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@ -1926,8 +1926,17 @@ mod tests {
test_virtio_fs(false, None, "none", &prepare_vhost_user_fs_daemon)
}
#[test]
fn test_virtio_pmem() {
#[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);
@ -1935,28 +1944,34 @@ mod tests {
let mut workload_path = dirs::home_dir().unwrap();
workload_path.push("workloads");
let mut kernel_path = workload_path;
kernel_path.push("vmlinux");
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(&["--cpus", "boot=1"])
.args(&["--memory", "size=512M"])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--kernel", &guest.fw_path])
.default_disks()
.default_net()
.args(&[
"--pmem",
format!(
"file={},size={}",
"file={},size={}{}",
pmem_temp_file.path().to_str().unwrap(),
"128M",
if discard_writes {
",discard_writes=on"
} else {
""
}
)
.as_str(),
])
.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"])
.spawn()
.unwrap();
@ -1972,6 +1987,42 @@ mod tests {
"/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();