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Introduce new kubelet volume manager

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This commit adds a new volume manager in kubelet that synchronizes
volume mount/unmount (and attach/detach, if attach/detach controller
is not enabled).

This eliminates the race conditions between the pod creation loop
and the orphaned volumes loops. It also removes the unmount/detach
from the `syncPod()` path so volume clean up never blocks the
`syncPod` loop.
This commit is contained in:
saadali
2016-05-29 19:22:22 -07:00
parent 9b6a505f8a
commit 542f2dc708
85 changed files with 5547 additions and 2093 deletions
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22
pkg/volume/empty_dir/empty_dir_test.go
View File

@@ -33,9 +33,9 @@ import (
)
// Construct an instance of a plugin, by name.
func makePluginUnderTest(t *testing.T, plugName, basePath string) volume.VolumePlugin {
func makePluginUnderTest(t *testing.T, plugName, basePath, rootContext string) volume.VolumePlugin {
plugMgr := volume.VolumePluginMgr{}
plugMgr.InitPlugins(ProbeVolumePlugins(), volumetest.NewFakeVolumeHost(basePath, nil, nil))
plugMgr.InitPlugins(ProbeVolumePlugins(), volumetest.NewFakeVolumeHost(basePath, nil, nil, rootContext))
plug, err := plugMgr.FindPluginByName(plugName)
if err != nil {
@@ -50,10 +50,10 @@ func TestCanSupport(t *testing.T) {
t.Fatalf("can't make a temp dir: %v", err)
}
defer os.RemoveAll(tmpDir)
plug := makePluginUnderTest(t, "kubernetes.io/empty-dir", tmpDir)
plug := makePluginUnderTest(t, "kubernetes.io/empty-dir", tmpDir, "" /* rootContext */)
if plug.Name() != "kubernetes.io/empty-dir" {
t.Errorf("Wrong name: %s", plug.Name())
if plug.GetPluginName() != "kubernetes.io/empty-dir" {
t.Errorf("Wrong name: %s", plug.GetPluginName())
}
if !plug.CanSupport(&volume.Spec{Volume: &api.Volume{VolumeSource: api.VolumeSource{EmptyDir: &api.EmptyDirVolumeSource{}}}}) {
t.Errorf("Expected true")
@@ -130,7 +130,7 @@ func doTestPlugin(t *testing.T, config pluginTestConfig) {
volumePath = path.Join(basePath, "pods/poduid/volumes/kubernetes.io~empty-dir/test-volume")
metadataDir = path.Join(basePath, "pods/poduid/plugins/kubernetes.io~empty-dir/test-volume")
plug = makePluginUnderTest(t, "kubernetes.io/empty-dir", basePath)
plug = makePluginUnderTest(t, "kubernetes.io/empty-dir", basePath, config.rootContext)
volumeName = "test-volume"
spec = &api.Volume{
Name: volumeName,
@@ -173,7 +173,7 @@ func doTestPlugin(t *testing.T, config pluginTestConfig) {
pod,
&physicalMounter,
&mountDetector,
volume.VolumeOptions{RootContext: config.rootContext})
volume.VolumeOptions{})
if err != nil {
t.Errorf("Failed to make a new Mounter: %v", err)
}
@@ -258,13 +258,13 @@ func TestPluginBackCompat(t *testing.T) {
}
defer os.RemoveAll(basePath)
plug := makePluginUnderTest(t, "kubernetes.io/empty-dir", basePath)
plug := makePluginUnderTest(t, "kubernetes.io/empty-dir", basePath, "" /* rootContext */)
spec := &api.Volume{
Name: "vol1",
}
pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
mounter, err := plug.NewMounter(volume.NewSpecFromVolume(spec), pod, volume.VolumeOptions{RootContext: ""})
mounter, err := plug.NewMounter(volume.NewSpecFromVolume(spec), pod, volume.VolumeOptions{})
if err != nil {
t.Errorf("Failed to make a new Mounter: %v", err)
}
@@ -287,13 +287,13 @@ func TestMetrics(t *testing.T) {
}
defer os.RemoveAll(tmpDir)
plug := makePluginUnderTest(t, "kubernetes.io/empty-dir", tmpDir)
plug := makePluginUnderTest(t, "kubernetes.io/empty-dir", tmpDir, "" /* rootContext */)
spec := &api.Volume{
Name: "vol1",
}
pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
mounter, err := plug.NewMounter(volume.NewSpecFromVolume(spec), pod, volume.VolumeOptions{RootContext: ""})
mounter, err := plug.NewMounter(volume.NewSpecFromVolume(spec), pod, volume.VolumeOptions{})
if err != nil {
t.Errorf("Failed to make a new Mounter: %v", err)
}