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-rw-r--r--runsc/container/multi_container_test.go299
1 files changed, 299 insertions, 0 deletions
diff --git a/runsc/container/multi_container_test.go b/runsc/container/multi_container_test.go
index 4ea3c74ac..d57a73d46 100644
--- a/runsc/container/multi_container_test.go
+++ b/runsc/container/multi_container_test.go
@@ -99,6 +99,36 @@ func startContainers(conf *boot.Config, specs []*specs.Spec, ids []string) ([]*C
return containers, cleanup, nil
}
+type execDesc struct {
+ c *Container
+ cmd []string
+ want int
+ desc string
+}
+
+func execMany(execs []execDesc) error {
+ for _, exec := range execs {
+ args := &control.ExecArgs{Argv: exec.cmd}
+ if ws, err := exec.c.executeSync(args); err != nil {
+ return fmt.Errorf("error executing %+v: %v", args, err)
+ } else if ws.ExitStatus() != exec.want {
+ return fmt.Errorf("%q: exec %q got exit status: %d, want: %d", exec.desc, exec.cmd, ws.ExitStatus(), exec.want)
+ }
+ }
+ return nil
+}
+
+func createSharedMount(mount specs.Mount, name string, pod ...*specs.Spec) {
+ for _, spec := range pod {
+ spec.Annotations[path.Join(boot.MountPrefix, name, "source")] = mount.Source
+ spec.Annotations[path.Join(boot.MountPrefix, name, "type")] = mount.Type
+ spec.Annotations[path.Join(boot.MountPrefix, name, "share")] = "pod"
+ if len(mount.Options) > 0 {
+ spec.Annotations[path.Join(boot.MountPrefix, name, "options")] = strings.Join(mount.Options, ",")
+ }
+ }
+}
+
// TestMultiContainerSanity checks that it is possible to run 2 dead-simple
// containers in the same sandbox.
func TestMultiContainerSanity(t *testing.T) {
@@ -828,3 +858,272 @@ func TestMultiContainerGoferStop(t *testing.T) {
}
}
}
+
+// Test that pod shared mounts are properly mounted in 2 containers and that
+// changes from one container is reflected in the other.
+func TestMultiContainerSharedMount(t *testing.T) {
+ for _, conf := range configs(all...) {
+ t.Logf("Running test with conf: %+v", conf)
+
+ // Setup the containers.
+ sleep := []string{"sleep", "100"}
+ podSpec, ids := createSpecs(sleep, sleep)
+ mnt0 := specs.Mount{
+ Destination: "/mydir/test",
+ Source: "/some/dir",
+ Type: "tmpfs",
+ Options: nil,
+ }
+ podSpec[0].Mounts = append(podSpec[0].Mounts, mnt0)
+
+ mnt1 := mnt0
+ mnt1.Destination = "/mydir2/test2"
+ podSpec[1].Mounts = append(podSpec[1].Mounts, mnt1)
+
+ createSharedMount(mnt0, "test-mount", podSpec...)
+
+ containers, cleanup, err := startContainers(conf, podSpec, ids)
+ if err != nil {
+ t.Fatalf("error starting containers: %v", err)
+ }
+ defer cleanup()
+
+ file0 := path.Join(mnt0.Destination, "abc")
+ file1 := path.Join(mnt1.Destination, "abc")
+ execs := []execDesc{
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "-d", mnt0.Destination},
+ desc: "directory is mounted in container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "-d", mnt1.Destination},
+ desc: "directory is mounted in container1",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/touch", file0},
+ desc: "create file in container0",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "-f", file0},
+ desc: "file appears in container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "-f", file1},
+ desc: "file appears in container1",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/bin/rm", file1},
+ desc: "file removed from container1",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "!", "-f", file0},
+ desc: "file removed from container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "!", "-f", file1},
+ desc: "file removed from container1",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/bin/mkdir", file1},
+ desc: "create directory in container1",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "-d", file0},
+ desc: "dir appears in container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "-d", file1},
+ desc: "dir appears in container1",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/bin/rmdir", file0},
+ desc: "create directory in container0",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "!", "-d", file0},
+ desc: "dir removed from container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "!", "-d", file1},
+ desc: "dir removed from container1",
+ },
+ }
+ if err := execMany(execs); err != nil {
+ t.Fatal(err.Error())
+ }
+ }
+}
+
+// Test that pod mounts are mounted as readonly when requested.
+func TestMultiContainerSharedMountReadonly(t *testing.T) {
+ for _, conf := range configs(all...) {
+ t.Logf("Running test with conf: %+v", conf)
+
+ // Setup the containers.
+ sleep := []string{"sleep", "100"}
+ podSpec, ids := createSpecs(sleep, sleep)
+ mnt0 := specs.Mount{
+ Destination: "/mydir/test",
+ Source: "/some/dir",
+ Type: "tmpfs",
+ Options: []string{"ro"},
+ }
+ podSpec[0].Mounts = append(podSpec[0].Mounts, mnt0)
+
+ mnt1 := mnt0
+ mnt1.Destination = "/mydir2/test2"
+ podSpec[1].Mounts = append(podSpec[1].Mounts, mnt1)
+
+ createSharedMount(mnt0, "test-mount", podSpec...)
+
+ containers, cleanup, err := startContainers(conf, podSpec, ids)
+ if err != nil {
+ t.Fatalf("error starting containers: %v", err)
+ }
+ defer cleanup()
+
+ file0 := path.Join(mnt0.Destination, "abc")
+ file1 := path.Join(mnt1.Destination, "abc")
+ execs := []execDesc{
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "-d", mnt0.Destination},
+ desc: "directory is mounted in container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "-d", mnt1.Destination},
+ desc: "directory is mounted in container1",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/touch", file0},
+ want: 1,
+ desc: "fails to write to container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/touch", file1},
+ want: 1,
+ desc: "fails to write to container1",
+ },
+ }
+ if err := execMany(execs); err != nil {
+ t.Fatal(err.Error())
+ }
+ }
+}
+
+// Test that shared pod mounts continue to work after container is restarted.
+func TestMultiContainerSharedMountRestart(t *testing.T) {
+ for _, conf := range configs(all...) {
+ t.Logf("Running test with conf: %+v", conf)
+
+ // Setup the containers.
+ sleep := []string{"sleep", "100"}
+ podSpec, ids := createSpecs(sleep, sleep)
+ mnt0 := specs.Mount{
+ Destination: "/mydir/test",
+ Source: "/some/dir",
+ Type: "tmpfs",
+ Options: nil,
+ }
+ podSpec[0].Mounts = append(podSpec[0].Mounts, mnt0)
+
+ mnt1 := mnt0
+ mnt1.Destination = "/mydir2/test2"
+ podSpec[1].Mounts = append(podSpec[1].Mounts, mnt1)
+
+ createSharedMount(mnt0, "test-mount", podSpec...)
+
+ containers, cleanup, err := startContainers(conf, podSpec, ids)
+ if err != nil {
+ t.Fatalf("error starting containers: %v", err)
+ }
+ defer cleanup()
+
+ file0 := path.Join(mnt0.Destination, "abc")
+ file1 := path.Join(mnt1.Destination, "abc")
+ execs := []execDesc{
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/touch", file0},
+ desc: "create file in container0",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "-f", file0},
+ desc: "file appears in container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "-f", file1},
+ desc: "file appears in container1",
+ },
+ }
+ if err := execMany(execs); err != nil {
+ t.Fatal(err.Error())
+ }
+
+ containers[1].Destroy()
+
+ bundleDir, err := testutil.SetupBundleDir(podSpec[1])
+ if err != nil {
+ t.Fatalf("error restarting container: %v", err)
+ }
+ defer os.RemoveAll(bundleDir)
+
+ containers[1], err = Create(ids[1], podSpec[1], conf, bundleDir, "", "", "")
+ if err != nil {
+ t.Fatalf("error creating container: %v", err)
+ }
+ if err := containers[1].Start(conf); err != nil {
+ t.Fatalf("error starting container: %v", err)
+ }
+
+ execs = []execDesc{
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "-f", file0},
+ desc: "file is still in container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "-f", file1},
+ desc: "file is still in container1",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/bin/rm", file1},
+ desc: "file removed from container1",
+ },
+ {
+ c: containers[0],
+ cmd: []string{"/usr/bin/test", "!", "-f", file0},
+ desc: "file removed from container0",
+ },
+ {
+ c: containers[1],
+ cmd: []string{"/usr/bin/test", "!", "-f", file1},
+ desc: "file removed from container1",
+ },
+ }
+ if err := execMany(execs); err != nil {
+ t.Fatal(err.Error())
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 19:34:29 +0000