92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
// +build linux
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/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package overlay
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import (
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"io/ioutil"
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"os"
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"os/exec"
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"testing"
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"github.com/containerd/containerd/pkg/testutil"
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)
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func testOverlaySupported(t testing.TB, expected bool, mkfs ...string) {
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testutil.RequiresRoot(t)
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mnt, err := ioutil.TempDir("", "containerd-fs-test-supports-overlay")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(mnt)
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deviceName, cleanupDevice, err := testutil.NewLoopback(100 << 20) // 100 MB
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if err != nil {
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t.Fatal(err)
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}
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if out, err := exec.Command(mkfs[0], append(mkfs[1:], deviceName)...).CombinedOutput(); err != nil {
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// not fatal
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cleanupDevice()
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t.Skipf("could not mkfs (%v) %s: %v (out: %q)", mkfs, deviceName, err, string(out))
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}
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if out, err := exec.Command("mount", deviceName, mnt).CombinedOutput(); err != nil {
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// not fatal
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cleanupDevice()
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t.Skipf("could not mount %s: %v (out: %q)", deviceName, err, string(out))
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}
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defer func() {
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testutil.Unmount(t, mnt)
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cleanupDevice()
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}()
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workload := func() {
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err = Supported(mnt)
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if expected && err != nil {
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t.Fatal(err)
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}
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if !expected && err == nil {
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t.Fatal("error is expected")
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}
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}
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b, ok := t.(*testing.B)
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if ok {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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workload()
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}
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b.StopTimer()
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} else {
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workload()
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}
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}
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func BenchmarkOverlaySupportedOnExt4(b *testing.B) {
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testOverlaySupported(b, true, "mkfs.ext4", "-F")
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}
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func BenchmarkOverlayUnsupportedOnFType0XFS(b *testing.B) {
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testOverlaySupported(b, false, "mkfs.xfs", "-m", "crc=0", "-n", "ftype=0")
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}
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func BenchmarkOverlaySupportedOnFType1XFS(b *testing.B) {
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testOverlaySupported(b, true, "mkfs.xfs", "-m", "crc=0", "-n", "ftype=1")
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}
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func BenchmarkOverlayUnsupportedOnFAT(b *testing.B) {
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testOverlaySupported(b, false, "mkfs.fat")
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}
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