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Remove support for previously deprecated nodeExpand call

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between staging and publish
This commit is contained in:
Hemant Kumar 2022-03-09 14:26:19 -05:00
parent c571ebed14
commit e24219d27b
3 changed files with 14 additions and 66 deletions
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6
pkg/volume/csi/csi_client.go
View File

@ -113,11 +113,7 @@ type csiDriverClient struct {
}
type csiResizeOptions struct {
volumeID string
// volumePath is path where volume is available. It could be:
// - path where node is staged if NodeExpandVolume is called after NodeStageVolume
// - path where volume is published if NodeExpandVolume is called after NodePublishVolume
// DEPRECATION NOTICE: in future NodeExpandVolume will be always called after NodePublish
volumeID string
volumePath string
stagingTargetPath string
fsType string

14
pkg/volume/csi/expander.go
View File

@ -82,20 +82,6 @@ func (c *csiPlugin) nodeExpandWithClient(
return false, fmt.Errorf("Expander.NodeExpand found CSI plugin %s/%s to not support node expansion", c.GetPluginName(), driverName)
}
// Check whether "STAGE_UNSTAGE_VOLUME" is set
stageUnstageSet, err := csClient.NodeSupportsStageUnstage(ctx)
if err != nil {
return false, fmt.Errorf("Expander.NodeExpand failed to check if plugins supports stage_unstage %v", err)
}
// if plugin does not support STAGE_UNSTAGE but CSI volume path is staged
// it must mean this was placeholder staging performed by k8s and not CSI staging
// in which case we should return from here so as volume can be node published
// before we can resize
if !stageUnstageSet && resizeOptions.CSIVolumePhase == volume.CSIVolumeStaged {
return false, nil
}
pv := resizeOptions.VolumeSpec.PersistentVolume
if pv == nil {
return false, fmt.Errorf("Expander.NodeExpand failed to find associated PersistentVolume for plugin %s", c.GetPluginName())

60
pkg/volume/util/operationexecutor/operation_generator.go
View File

@ -634,7 +634,6 @@ func (og *operationGenerator) GenerateMountVolumeFunc(
klog.InfoS(volumeToMount.GenerateMsgDetailed("MountVolume.WaitForAttach succeeded", fmt.Sprintf("DevicePath %q", devicePath)), "pod", klog.KObj(volumeToMount.Pod))
}
var resizeDone bool
var resizeError error
resizeOptions := volume.NodeResizeOptions{
DevicePath: devicePath,
@ -674,35 +673,8 @@ func (og *operationGenerator) GenerateMountVolumeFunc(
eventErr, detailedErr := volumeToMount.GenerateError("MountVolume.MarkDeviceAsMounted failed", markDeviceMountedErr)
return volumetypes.NewOperationContext(eventErr, detailedErr, migrated)
}
// If volume expansion is performed after MountDevice but before SetUp then
// deviceMountPath and deviceStagePath is going to be the same.
// Deprecation: Calling NodeExpandVolume after NodeStage/MountDevice will be deprecated
// in a future version of k8s.
resizeOptions.DeviceMountPath = deviceMountPath
// set staging path for volume expansion
resizeOptions.DeviceStagePath = deviceMountPath
resizeOptions.CSIVolumePhase = volume.CSIVolumeStaged
// NodeExpandVolume will resize the file system if user has requested a resize of
// underlying persistent volume and is allowed to do so.
resizeDone, resizeError = og.nodeExpandVolume(volumeToMount, actualStateOfWorld, resizeOptions)
if resizeError != nil {
klog.Errorf("MountVolume.NodeExpandVolume failed with %v", resizeError)
// Resize failed. To make sure NodeExpand is re-tried again on the next attempt
// *before* SetUp(), mark the mounted device as uncertain.
markDeviceUncertainErr := actualStateOfWorld.MarkDeviceAsUncertain(
volumeToMount.VolumeName, devicePath, deviceMountPath)
if markDeviceUncertainErr != nil {
// just log, return the resizeError error instead
klog.InfoS(volumeToMount.GenerateMsgDetailed(
"MountVolume.MountDevice failed to mark volume as uncertain",
markDeviceUncertainErr.Error()), "pod", klog.KObj(volumeToMount.Pod))
}
eventErr, detailedErr := volumeToMount.GenerateError("MountVolume.MountDevice failed while expanding volume", resizeError)
return volumetypes.NewOperationContext(eventErr, detailedErr, migrated)
}
}
// Execute mount
@ -740,25 +712,19 @@ func (og *operationGenerator) GenerateMountVolumeFunc(
resizeOptions.DeviceMountPath = volumeMounter.GetPath()
resizeOptions.CSIVolumePhase = volume.CSIVolumePublished
// We need to call resizing here again in case resizing was not done during device mount. There could be
// two reasons of that:
// - Volume does not support DeviceMounter interface.
// - In case of CSI the volume does not have node stage_unstage capability.
if !resizeDone {
_, resizeError = og.nodeExpandVolume(volumeToMount, actualStateOfWorld, resizeOptions)
if resizeError != nil {
klog.Errorf("MountVolume.NodeExpandVolume failed with %v", resizeError)
eventErr, detailedErr := volumeToMount.GenerateError("MountVolume.Setup failed while expanding volume", resizeError)
// At this point, MountVolume.Setup already succeeded, we should add volume into actual state
// so that reconciler can clean up volume when needed. However, volume resize failed,
// we should not mark the volume as mounted to avoid pod starts using it.
// Considering the above situations, we mark volume as uncertain here so that reconciler will tigger
// volume tear down when pod is deleted, and also makes sure pod will not start using it.
if err := actualStateOfWorld.MarkVolumeMountAsUncertain(markOpts); err != nil {
klog.Errorf(volumeToMount.GenerateErrorDetailed("MountVolume.MarkVolumeMountAsUncertain failed", err).Error())
}
return volumetypes.NewOperationContext(eventErr, detailedErr, migrated)
_, resizeError = og.nodeExpandVolume(volumeToMount, actualStateOfWorld, resizeOptions)
if resizeError != nil {
klog.Errorf("MountVolume.NodeExpandVolume failed with %v", resizeError)
eventErr, detailedErr := volumeToMount.GenerateError("MountVolume.Setup failed while expanding volume", resizeError)
// At this point, MountVolume.Setup already succeeded, we should add volume into actual state
// so that reconciler can clean up volume when needed. However, volume resize failed,
// we should not mark the volume as mounted to avoid pod starts using it.
// Considering the above situations, we mark volume as uncertain here so that reconciler will tigger
// volume tear down when pod is deleted, and also makes sure pod will not start using it.
if err := actualStateOfWorld.MarkVolumeMountAsUncertain(markOpts); err != nil {
klog.Errorf(volumeToMount.GenerateErrorDetailed("MountVolume.MarkVolumeMountAsUncertain failed", err).Error())
}
return volumetypes.NewOperationContext(eventErr, detailedErr, migrated)
}
// record total time it takes to mount a volume. This is end to end time that includes waiting for volume to attach, node to be update