Add fsstress tests

Updates #5273

PiperOrigin-RevId: 352088736

Makefile

@@ -295,6 +295,11 @@ packetimpact-tests: load-packetimpact $(RUNTIME_BIN)
 	@$(call test_runtime,$(RUNTIME),--jobs=HOST_CPUS*3 --local_test_jobs=HOST_CPUS*3 //test/packetimpact/tests:all_tests)
 .PHONY: packetimpact-tests
 
+fsstress-test: load-basic $(RUNTIME_BIN)
+	@$(call install_runtime,$(RUNTIME),--vfs2)
+	@$(call test_runtime,$(RUNTIME),//test/fsstress:fsstress_test)
+.PHONY: fsstress-test
+
 # Specific containerd version tests.
 containerd-test-%: load-basic_alpine load-basic_python load-basic_busybox load-basic_resolv load-basic_httpd load-basic_ubuntu $(RUNTIME_BIN)
 	@$(call install_runtime,$(RUNTIME),) # Clear flags.

images/basic/fsstress/Dockerfile

@@ -0,0 +1,17 @@
+# Usage: docker run --rm fsstress -d /test -n 10000 -p 100 -X -v
+FROM alpine
+
+RUN apk add git
+RUN git clone https://github.com/linux-test-project/ltp.git --depth 1
+
+WORKDIR /ltp
+RUN ./travis/alpine.sh
+RUN make autotools && ./configure
+RUN make -C testcases/kernel/fs/fsstress
+RUN cp ./testcases/kernel/fs/fsstress/fsstress /usr/bin
+RUN rm -rf /fsstress /tmp
+
+WORKDIR /
+# This is required, otherwise running with -p > 1 prematurelly exits.
+COPY run.sh .
+ENTRYPOINT ["/run.sh"]

images/basic/fsstress/run.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# 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.
+
+/usr/bin/fsstress "$@"

test/fsstress/BUILD

@@ -0,0 +1,25 @@
+load("//tools:defs.bzl", "go_library", "go_test")
+
+package(licenses = ["notice"])
+
+go_test(
+    name = "fsstress_test",
+    size = "large",
+    srcs = [
+        "fsstress_test.go",
+    ],
+    library = ":fsstress",
+    tags = [
+        # Requires docker and runsc to be configured before the test runs.
+        "manual",
+        "local",
+    ],
+    deps = [
+        "//pkg/test/dockerutil",
+    ],
+)
+
+go_library(
+    name = "fsstress",
+    srcs = ["fsstress.go"],
+)

test/fsstress/fsstress.go

@@ -0,0 +1,16 @@
+// 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 is empty. See fsstress_test.go for description.
+package fsstress

test/fsstress/fsstress_test.go

@@ -0,0 +1,62 @@
+// 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"
+	"math/rand"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+
+	"gvisor.dev/gvisor/pkg/test/dockerutil"
+)
+
+func init() {
+	rand.Seed(int64(time.Now().Nanosecond()))
+}
+
+func fsstress(t *testing.T, dir string) {
+	ctx := context.Background()
+	d := dockerutil.MakeContainer(ctx, t)
+	defer d.CleanUp(ctx)
+
+	const (
+		operations = "10000"
+		processes  = "100"
+		image      = "basic/fsstress"
+	)
+	seed := strconv.FormatUint(uint64(rand.Uint32()), 10)
+	args := []string{"-d", dir, "-n", operations, "-p", processes, "-seed", seed, "-X"}
+	t.Logf("Repro: docker run --rm --runtime=runsc %s %s", 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)
+	}
+	lines := strings.SplitN(out, "\n", 2)
+	if len(lines) > 1 || !strings.HasPrefix(out, "seed =") {
+		t.Fatalf("unexpected output: %s", out)
+	}
+}
+
+func TestFsstressGofer(t *testing.T) {
+	fsstress(t, "/test")
+}
+
+func TestFsstressTmpfs(t *testing.T) {
+	fsstress(t, "/tmp")
+}