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Document CSI update #12928

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Mar 19, 2019
Merged

Document CSI update #12928

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c2fa013
Document CSI update
gnufied Mar 1, 2019
96000e4
Finish CSI documentation
gnufied Mar 13, 2019
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10 changes: 9 additions & 1 deletion content/en/docs/concepts/storage/persistent-volumes.md
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Expand Up @@ -179,8 +179,8 @@ However, the particular path specified in the custom recycler pod template in th

### Expanding Persistent Volumes Claims

{{< feature-state for_k8s_version="v1.8" state="alpha" >}}
{{< feature-state for_k8s_version="v1.11" state="beta" >}}

Support for expanding PersistentVolumeClaims (PVCs) is now enabled by default. You can expand
the following types of volumes:

Expand All @@ -193,6 +193,7 @@ the following types of volumes:
* Azure Disk
* Portworx
* FlexVolumes
* CSI

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Can this use a shortcode, ie {{< feature-state for_k8s_version="v1.14" state="alpha" >}}?

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(also, this might want to target dev-1.14 rather than master).

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changed the base to dev-1.14

You can only expand a PVC if its storage class's `allowVolumeExpansion` field is set to true.

Expand All @@ -214,6 +215,13 @@ 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.

#### CSI Volume expansion

{{< feature-state for_k8s_version="v1.14" state="alpha" >}}

CSI volume expansion requires enabling `ExpandCSIVolumes` feature gate and also requires specific CSI driver to support volume expansion. Please refer to documentation of specific CSI driver for more information.


#### Resizing a volume containing a file system

You can only resize volumes containing a file system if the file system is XFS, Ext3, or Ext4.
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2 changes: 1 addition & 1 deletion content/en/docs/reference/command-line-tools-reference/feature-gates.md
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Expand Up @@ -79,8 +79,8 @@ different Kubernetes components.
| `DynamicVolumeProvisioning` | `true` | Alpha | 1.3 | 1.7 |
| `DynamicVolumeProvisioning` | `true` | GA | 1.8 | |
| `EnableEquivalenceClassCache` | `false` | Alpha | 1.8 | |
| `ExpandCSIVolumes` | `false` | Alpha | 1.14 | | |
| `ExpandInUsePersistentVolumes` | `false` | Alpha | 1.11 | 1.13 | |
| `ExpandInUsePersistentVolumes` | `true` | Beta | 1.14 | |
| `ExpandPersistentVolumes` | `false` | Alpha | 1.8 | 1.10 |
| `ExpandPersistentVolumes` | `true` | Beta | 1.11 | |
| `ExperimentalCriticalPodAnnotation` | `false` | Alpha | 1.5 | |
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