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add pv protection description (#7620)

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Yuquan Ren
2018-03-05 17:39:51 +08:00
committed by zacharysarah
parent 9e96858424
commit f8a1cd6aa8
3 changed files with 18 additions and 225 deletions
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docs/concepts/storage/persistent-volumes.md
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@@ -74,6 +74,7 @@ Once a user has a claim and that claim is bound, the bound PV belongs to the use
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### Storage Object in Use Protection
{% assign for_k8s_version="v1.10" %}{% include feature-state-beta.md %}
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The purpose of the Storage Object in Use Protection feature is to ensure that Persistent Volume Claims (PVCs) in active use by a pod and Persistent Volume (PVs) that are bound to PVCs are not removed from the system as this may result in data loss.
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### Persistent Volume Claim Protection
@@ -95,10 +96,16 @@ The purpose of the Storage Protection feature is to ensure that Persistent Volum
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The purpose of the Storage Object in Use Protection feature is to ensure that Persistent Volume Claims (PVCs) in active use by a pod are not removed from the system as this may result in data loss.
>>>>>>> Storage Protection was renamed to Storage Object in Use Protection (#7576)
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The purpose of the Storage Object in Use Protection feature is to ensure that Persistent Volume Claims (PVCs) in active use by a pod are not removed from the system as this may result in data loss.
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The purpose of the Storage Object in Use Protection feature is to ensure that Persistent Volume Claims (PVCs) in active use by a pod and Persistent Volume (PVs) that are bound to PVCs are not removed from the system as this may result in data loss.
>>>>>>> add pv protection description (#7620)
**Note:** PVC is in active use by a pod when the pod status is `Pending` and the pod is assigned to a node or the pod status is `Running`.
{: .note}
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When the [Storage Object in Use Protection beta feature](/docs/tasks/administer-cluster/storage-object-in-use-protection/) is enabled, if a user deletes a PVC in active use by a pod, the PVC is not removed immediately. PVC removal is postponed until the PVC is no longer actively used by any pods, and also if admin deletes a PV that is bound to a PVC, the PV is not removed immediately. PV removal is postponed until the PV is not bound to a PVC any more.
@@ -112,6 +119,11 @@ When the [Storage Protection beta feature](/docs/tasks/administer-cluster/pvc-pr
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When the [Storage Object in Use Protection beta feature](/docs/tasks/administer-cluster/pvc-protection/) is enabled, if a user deletes a PVC in active use by a pod, the PVC is not removed immediately. PVC removal is postponed until the PVC is no longer actively used by any pods.
>>>>>>> Storage Protection was renamed to Storage Object in Use Protection (#7576)
||||||| merged common ancestors
When the [Storage Object in Use Protection beta feature](/docs/tasks/administer-cluster/pvc-protection/) is enabled, if a user deletes a PVC in active use by a pod, the PVC is not removed immediately. PVC removal is postponed until the PVC is no longer actively used by any pods.
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When the [Storage Object in Use Protection beta feature](/docs/tasks/administer-cluster/storage-object-in-use-protection/) is enabled, if a user deletes a PVC in active use by a pod, the PVC is not removed immediately. PVC removal is postponed until the PVC is no longer actively used by any pods, and also if admin deletes a PV that is bound to a PVC, the PV is not removed immediately. PV removal is postponed until the PV is not bound to a PVC any more.
>>>>>>> add pv protection description (#7620)
You can see that a PVC is protected when the PVC's status is `Terminating` and the `Finalizers` list includes `kubernetes.io/pvc-protection`: