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cca3d557e6
Add a new feature gate NewVolumeManagerReconstruction and add the new volume reconstruction done in 1.26 under that feature gate.
70 lines
2.3 KiB
Go
70 lines
2.3 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package reconciler
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import (
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/klog/v2"
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)
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// TODO: move to reconciler.go and remove old code there when NewVolumeManagerReconstruction is GA
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// TODO: Replace Run() when NewVolumeManagerReconstruction is GA
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func (rc *reconciler) runNew(stopCh <-chan struct{}) {
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rc.reconstructVolumes()
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klog.InfoS("Reconciler: start to sync state")
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wait.Until(rc.reconcileNew, rc.loopSleepDuration, stopCh)
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}
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func (rc *reconciler) reconcileNew() {
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readyToUnmount := rc.readyToUnmount()
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if readyToUnmount {
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// Unmounts are triggered before mounts so that a volume that was
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// referenced by a pod that was deleted and is now referenced by another
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// pod is unmounted from the first pod before being mounted to the new
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// pod.
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rc.unmountVolumes()
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}
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// Next we mount required volumes. This function could also trigger
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// attach if kubelet is responsible for attaching volumes.
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// If underlying PVC was resized while in-use then this function also handles volume
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// resizing.
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rc.mountOrAttachVolumes()
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// Unmount volumes only when DSW and ASW are fully populated to prevent unmounting a volume
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// that is still needed, but it did not reach DSW yet.
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if readyToUnmount {
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// Ensure devices that should be detached/unmounted are detached/unmounted.
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rc.unmountDetachDevices()
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// Clean up any orphan volumes that failed reconstruction.
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rc.cleanOrphanVolumes()
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}
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if len(rc.volumesNeedDevicePath) != 0 {
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rc.updateReconstructedDevicePaths()
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}
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if len(rc.volumesNeedReportedInUse) != 0 && rc.populatorHasAddedPods() {
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// Once DSW is populated, mark all reconstructed as reported in node.status,
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// so they can proceed with MountDevice / SetUp.
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rc.desiredStateOfWorld.MarkVolumesReportedInUse(rc.volumesNeedReportedInUse)
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rc.volumesNeedReportedInUse = nil
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}
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}
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