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Merge pull request #30906 from mattcary/pv-resize

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Clarify editing PV for volume resize
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Kubernetes Prow Robot
2021-12-16 14:54:52 -08:00
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parent 1b12bcc645 33aae9b7e5
commit 574eca943f
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content/en/docs/concepts/storage/persistent-volumes.md
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@@ -254,6 +254,16 @@ To request a larger volume for a PVC, edit the PVC object and specify a larger
size. This triggers expansion of the volume that backs the underlying PersistentVolume. A
new PersistentVolume is never created to satisfy the claim. Instead, an existing volume is resized.
{{< warning >}}
Directly editing the size of a PersistentVolume can prevent an automatic resize of that volume.
If you edit the capacity of a PersistentVolume, and then edit the `.spec` of a matching
PersistentVolumeClaim to make the size of the PersistentVolumeClaim match the PersistentVolume,
then no storage resize happens.
The Kubernetes control plane will see that the desired state of both resources matches,
conclude that the backing volume size has been manually
increased and that no resize is necessary.
{{< /warning >}}
#### CSI Volume expansion
{{< feature-state for_k8s_version="v1.16" state="beta" >}}