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// Copyright 2021 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package fsstress runs fsstress tool inside a docker container.
package fsstress
import (
"context"
"flag"
"math/rand"
"os"
"strconv"
"strings"
"testing"
"time"
"gvisor.dev/gvisor/pkg/test/dockerutil"
)
func init() {
rand.Seed(int64(time.Now().Nanosecond()))
}
func TestMain(m *testing.M) {
dockerutil.EnsureSupportedDockerVersion()
flag.Parse()
os.Exit(m.Run())
}
type config struct {
operations string
processes string
target string
}
func fsstress(t *testing.T, conf config) {
ctx := context.Background()
d := dockerutil.MakeContainer(ctx, t)
defer d.CleanUp(ctx)
const image = "basic/fsstress"
seed := strconv.FormatUint(uint64(rand.Uint32()), 10)
args := []string{"-d", conf.target, "-n", conf.operations, "-p", conf.processes, "-s", seed, "-X"}
t.Logf("Repro: docker run --rm --runtime=%s gvisor.dev/images/%s %s", dockerutil.Runtime(), image, strings.Join(args, " "))
out, err := d.Run(ctx, dockerutil.RunOpts{Image: image}, args...)
if err != nil {
t.Fatalf("docker run failed: %v\noutput: %s", err, out)
}
// This is to catch cases where fsstress spews out error messages during clean
// up but doesn't return error.
if len(out) > 0 {
t.Fatalf("unexpected output: %s", out)
}
}
func TestFsstressTmpfs(t *testing.T) {
// This takes between 10s to run on my machine. Adjust as needed.
cfg := config{
operations: "5000",
processes: "20",
target: "/tmp",
}
fsstress(t, cfg)
}
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