volumemanager

Documentation

Index

• type FakeVolumeManager
  • func NewFakeVolumeManager(initialVolumes []v1.UniqueVolumeName) *FakeVolumeManager
  • func (f *FakeVolumeManager) GetExtraSupplementalGroupsForPod(pod *v1.Pod) []int64
  • func (f *FakeVolumeManager) GetMountedVolumesForPod(podName types.UniquePodName) container.VolumeMap
  • func (f *FakeVolumeManager) GetPossiblyMountedVolumesForPod(podName types.UniquePodName) container.VolumeMap
  • func (f *FakeVolumeManager) GetVolumesInUse() []v1.UniqueVolumeName
  • func (f *FakeVolumeManager) GetVolumesReportedInUse() []v1.UniqueVolumeName
  • func (f *FakeVolumeManager) MarkVolumesAsReportedInUse(volumesReportedAsInUse []v1.UniqueVolumeName)
  • func (f *FakeVolumeManager) ReconcilerStatesHasBeenSynced() bool
  • func (f *FakeVolumeManager) Run(sourcesReady config.SourcesReady, stopCh <-chan struct{})
  • func (f *FakeVolumeManager) VolumeIsAttached(volumeName v1.UniqueVolumeName) bool
  • func (f *FakeVolumeManager) WaitForAttachAndMount(ctx context.Context, pod *v1.Pod) error
  • func (f *FakeVolumeManager) WaitForUnmount(ctx context.Context, pod *v1.Pod) error
• type PodManager
• type PodStateProvider
• type VolumeManager
  • func NewVolumeManager(controllerAttachDetachEnabled bool, nodeName k8stypes.NodeName, ...) VolumeManager

Types

type FakeVolumeManager

type FakeVolumeManager struct {
	// contains filtered or unexported fields
}

FakeVolumeManager is a test implementation that just tracks calls

func NewFakeVolumeManager

func NewFakeVolumeManager(initialVolumes []v1.UniqueVolumeName) *FakeVolumeManager

NewFakeVolumeManager creates a new VolumeManager test instance

func (*FakeVolumeManager) GetExtraSupplementalGroupsForPod

func (f *FakeVolumeManager) GetExtraSupplementalGroupsForPod(pod *v1.Pod) []int64

GetExtraSupplementalGroupsForPod is not implemented

func (*FakeVolumeManager) GetMountedVolumesForPod

func (f *FakeVolumeManager) GetMountedVolumesForPod(podName types.UniquePodName) container.VolumeMap

GetMountedVolumesForPod is not implemented

func (*FakeVolumeManager) GetPossiblyMountedVolumesForPod

func (f *FakeVolumeManager) GetPossiblyMountedVolumesForPod(podName types.UniquePodName) container.VolumeMap

GetPossiblyMountedVolumesForPod is not implemented

func (*FakeVolumeManager) GetVolumesInUse

func (f *FakeVolumeManager) GetVolumesInUse() []v1.UniqueVolumeName

GetVolumesInUse returns a list of the initial volumes

func (*FakeVolumeManager) GetVolumesReportedInUse

func (f *FakeVolumeManager) GetVolumesReportedInUse() []v1.UniqueVolumeName

GetVolumesReportedInUse is a test function only that returns a list of volumes from the reportedInUse map

func (*FakeVolumeManager) MarkVolumesAsReportedInUse

func (f *FakeVolumeManager) MarkVolumesAsReportedInUse(volumesReportedAsInUse []v1.UniqueVolumeName)

MarkVolumesAsReportedInUse adds the given volumes to the reportedInUse map

func (*FakeVolumeManager) ReconcilerStatesHasBeenSynced

func (f *FakeVolumeManager) ReconcilerStatesHasBeenSynced() bool

ReconcilerStatesHasBeenSynced is not implemented

func (*FakeVolumeManager) Run

func (f *FakeVolumeManager) Run(sourcesReady config.SourcesReady, stopCh <-chan struct{})

Run is not implemented

func (*FakeVolumeManager) VolumeIsAttached

func (f *FakeVolumeManager) VolumeIsAttached(volumeName v1.UniqueVolumeName) bool

VolumeIsAttached is not implemented

func (*FakeVolumeManager) WaitForAttachAndMount

func (f *FakeVolumeManager) WaitForAttachAndMount(ctx context.Context, pod *v1.Pod) error

WaitForAttachAndMount is not implemented

func (*FakeVolumeManager) WaitForUnmount

func (f *FakeVolumeManager) WaitForUnmount(ctx context.Context, pod *v1.Pod) error

WaitForUnmount is not implemented

type PodManager

type PodManager interface {
	GetPodByUID(k8stypes.UID) (*v1.Pod, bool)
	GetPods() []*v1.Pod
}

PodManager is the subset of methods the manager needs to observe the actual state of the kubelet. See pkg/k8s.io/kubernetes/pkg/kubelet/pod.Manager for method godoc.

type PodStateProvider

type PodStateProvider interface {
	ShouldPodContainersBeTerminating(k8stypes.UID) bool
	ShouldPodRuntimeBeRemoved(k8stypes.UID) bool
}

podStateProvider can determine if a pod is going to be terminated

type VolumeManager

type VolumeManager interface {
	// Starts the volume manager and all the asynchronous loops that it controls
	Run(sourcesReady config.SourcesReady, stopCh <-chan struct{})

	// WaitForAttachAndMount processes the volumes referenced in the specified
	// pod and blocks until they are all attached and mounted (reflected in
	// actual state of the world).
	// An error is returned if all volumes are not attached and mounted within
	// the duration defined in podAttachAndMountTimeout.
	WaitForAttachAndMount(ctx context.Context, pod *v1.Pod) error

	// WaitForUnmount processes the volumes referenced in the specified
	// pod and blocks until they are all unmounted (reflected in the actual
	// state of the world).
	// An error is returned if all volumes are not unmounted within
	// the duration defined in podAttachAndMountTimeout.
	WaitForUnmount(ctx context.Context, pod *v1.Pod) error

	// GetMountedVolumesForPod returns a VolumeMap containing the volumes
	// referenced by the specified pod that are successfully attached and
	// mounted. The key in the map is the OuterVolumeSpecName (i.e.
	// pod.Spec.Volumes[x].Name). It returns an empty VolumeMap if pod has no
	// volumes.
	GetMountedVolumesForPod(podName types.UniquePodName) container.VolumeMap

	// GetPossiblyMountedVolumesForPod returns a VolumeMap containing the volumes
	// referenced by the specified pod that are either successfully attached
	// and mounted or are "uncertain", i.e. a volume plugin may be mounting
	// them right now. The key in the map is the OuterVolumeSpecName (i.e.
	// pod.Spec.Volumes[x].Name). It returns an empty VolumeMap if pod has no
	// volumes.
	GetPossiblyMountedVolumesForPod(podName types.UniquePodName) container.VolumeMap

	// GetExtraSupplementalGroupsForPod returns a list of the extra
	// supplemental groups for the Pod. These extra supplemental groups come
	// from annotations on persistent volumes that the pod depends on.
	GetExtraSupplementalGroupsForPod(pod *v1.Pod) []int64

	// GetVolumesInUse returns a list of all volumes that implement the volume.Attacher
	// interface and are currently in use according to the actual and desired
	// state of the world caches. A volume is considered "in use" as soon as it
	// is added to the desired state of world, indicating it *should* be
	// attached to this node and remains "in use" until it is removed from both
	// the desired state of the world and the actual state of the world, or it
	// has been unmounted (as indicated in actual state of world).
	GetVolumesInUse() []v1.UniqueVolumeName

	// ReconcilerStatesHasBeenSynced returns true only after the actual states in reconciler
	// has been synced at least once after kubelet starts so that it is safe to update mounted
	// volume list retrieved from actual state.
	ReconcilerStatesHasBeenSynced() bool

	// VolumeIsAttached returns true if the given volume is attached to this
	// node.
	VolumeIsAttached(volumeName v1.UniqueVolumeName) bool

	// Marks the specified volume as having successfully been reported as "in
	// use" in the nodes's volume status.
	MarkVolumesAsReportedInUse(volumesReportedAsInUse []v1.UniqueVolumeName)
}

VolumeManager runs a set of asynchronous loops that figure out which volumes need to be attached/mounted/unmounted/detached based on the pods scheduled on this node and makes it so.

func NewVolumeManager

func NewVolumeManager(
	controllerAttachDetachEnabled bool,
	nodeName k8stypes.NodeName,
	podManager PodManager,
	podStateProvider PodStateProvider,
	kubeClient clientset.Interface,
	volumePluginMgr *volume.VolumePluginMgr,
	kubeContainerRuntime container.Runtime,
	mounter mount.Interface,
	hostutil hostutil.HostUtils,
	kubeletPodsDir string,
	recorder record.EventRecorder,
	blockVolumePathHandler volumepathhandler.BlockVolumePathHandler) VolumeManager

NewVolumeManager returns a new concrete instance implementing the VolumeManager interface.

kubeClient - kubeClient is the kube API client used by DesiredStateOfWorldPopulator to communicate with the API server to fetch PV and PVC objects

volumePluginMgr - the volume plugin manager used to access volume plugins. Must be pre-initialized.