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Fix code for desired state of the world populator

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This commit is contained in:
Hemant Kumar 2022-03-08 16:03:58 -05:00
parent e4f62d6c41
commit c0fbd83cde
3 changed files with 11 additions and 25 deletions
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1
pkg/kubelet/volumemanager/cache/desired_state_of_world.go vendored
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@ -194,6 +194,7 @@ type volumeToMount struct {
desiredSizeLimit *resource.Quantity
// persistentVolumeSize records desired size of a persistent volume.
// Usually this value reflects size recorded in pv.Spec.Capacity
persistentVolumeSize *resource.Quantity
}

34
pkg/kubelet/volumemanager/populator/desired_state_of_world_populator.go
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@ -195,13 +195,12 @@ func (dswp *desiredStateOfWorldPopulator) findAndAddNewPods() {
mountedVolumes[mountedVolume.OuterVolumeSpecName] = mountedVolume
}
processedVolumesForFSResize := sets.NewString()
for _, pod := range dswp.podManager.GetPods() {
if dswp.podStateProvider.ShouldPodContainersBeTerminating(pod.UID) {
// Do not (re)add volumes for pods that can't also be starting containers
continue
}
dswp.processPodVolumes(pod, mountedVolumesForPod, processedVolumesForFSResize)
dswp.processPodVolumes(pod, mountedVolumesForPod)
}
}
@ -270,8 +269,7 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
// desired state of the world.
func (dswp *desiredStateOfWorldPopulator) processPodVolumes(
pod *v1.Pod,
mountedVolumesForPod map[volumetypes.UniquePodName]map[string]cache.MountedVolume,
processedVolumesForFSResize sets.String) {
mountedVolumesForPod map[volumetypes.UniquePodName]map[string]cache.MountedVolume) {
if pod == nil {
return
}
@ -314,9 +312,7 @@ func (dswp *desiredStateOfWorldPopulator) processPodVolumes(
// sync reconstructed volume
dswp.actualStateOfWorld.SyncReconstructedVolume(uniqueVolumeName, uniquePodName, podVolume.Name)
dswp.checkVolumeFSResize(pod, podVolume, pvc, volumeSpec,
uniquePodName, mountedVolumesForPod, processedVolumesForFSResize)
dswp.checkVolumeFSResize(pod, podVolume, pvc, volumeSpec, uniquePodName, mountedVolumesForPod)
}
// some of the volume additions may have failed, should not mark this pod as fully processed
@ -350,8 +346,7 @@ func (dswp *desiredStateOfWorldPopulator) checkVolumeFSResize(
pvc *v1.PersistentVolumeClaim,
volumeSpec *volume.Spec,
uniquePodName volumetypes.UniquePodName,
mountedVolumesForPod map[volumetypes.UniquePodName]map[string]cache.MountedVolume,
processedVolumesForFSResize sets.String) {
mountedVolumesForPod map[volumetypes.UniquePodName]map[string]cache.MountedVolume) {
if podVolume.PersistentVolumeClaim == nil {
// Only PVC supports resize operation.
return
@ -363,11 +358,6 @@ func (dswp *desiredStateOfWorldPopulator) checkVolumeFSResize(
// or online resize in subsequent loop(after we confirm it has been mounted).
return
}
if processedVolumesForFSResize.Has(string(uniqueVolumeName)) {
// File system resize operation is a global operation for volume,
// so we only need to check it once if more than one pod use it.
return
}
// volumeSpec.ReadOnly is the value that determines if volume could be formatted when being mounted.
// This is the same flag that determines filesystem resizing behaviour for offline resizing and hence
// we should use it here. This value comes from Pod.spec.volumes.persistentVolumeClaim.readOnly.
@ -376,10 +366,12 @@ func (dswp *desiredStateOfWorldPopulator) checkVolumeFSResize(
klog.V(5).InfoS("Skip file system resize check for the volume, as the volume is mounted as readonly", "pod", klog.KObj(pod), "volumeName", podVolume.Name)
return
}
if volumeRequiresFSResize(pvc, volumeSpec.PersistentVolume) {
dswp.actualStateOfWorld.MarkFSResizeRequired(uniqueVolumeName, uniquePodName)
}
processedVolumesForFSResize.Insert(string(uniqueVolumeName))
pvCap := volumeSpec.PersistentVolume.Spec.Capacity.Storage()
pvcStatusCap := pvc.Status.Capacity.Storage()
dswp.desiredStateOfWorld.UpdatePersistentVolumeSize(uniqueVolumeName, pvCap)
// in case the actualStateOfWorld was rebuild after kubelet restart ensure that claimSize is set to accurate value
dswp.actualStateOfWorld.SetVolumeClaimSize(uniqueVolumeName, pvcStatusCap)
}
func getUniqueVolumeName(
@ -397,12 +389,6 @@ func getUniqueVolumeName(
return mountedVolume.VolumeName, true
}
func volumeRequiresFSResize(pvc *v1.PersistentVolumeClaim, pv *v1.PersistentVolume) bool {
capacity := pvc.Status.Capacity[v1.ResourceStorage]
requested := pv.Spec.Capacity[v1.ResourceStorage]
return requested.Cmp(capacity) > 0
}
// podPreviouslyProcessed returns true if the volumes for this pod have already
// been processed/reprocessed by the populator. Otherwise, the volumes for this pod need to
// be reprocessed.

1
pkg/kubelet/volumemanager/populator/desired_state_of_world_populator_test.go
View File

@ -1127,7 +1127,6 @@ func verifyVolumeExistsInVolumesToMount(t *testing.T, expectedVolumeName v1.Uniq
expectReportedInUse,
volume.ReportedInUse)
}
return
}
}