fix: use pv annotation to trigger filesystem resize when necessary #140

sunpa93 · 2021-02-23T00:15:45Z

What type of PR is this?
/kind bug

What this PR does / why we need it:
fix: add annotation to pv after resize if filesystem resize is necessary. delete when pvc.status.capacity >= pv.spec.capacity

Which issue(s) this PR fixes:

Fixes kubernetes/kubernetes#88683

Special notes for your reviewer:
This PR is a sister PR of kubernetes/kubernetes#99326

Does this PR introduce a user-facing change?:

Add a feature-gate to allow users to restore size of deleted PVCs

k8s-ci-robot · 2021-02-23T00:15:52Z

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k8s-ci-robot · 2021-02-23T00:15:53Z

Hi @sunpa93. Thanks for your PR.

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gnufied · 2021-02-23T19:57:58Z

/ok-to-test

gnufied · 2021-02-23T19:58:10Z

/assign

gnufied

Looks good mostly. But I think we need unit tests for some these new behaviours.

pkg/controller/controller.go

sunpa93 · 2021-02-25T02:17:33Z

Looks good mostly. But I think we need unit tests for some these new behaviours.

I have modified the tests so that they check if annotations get properly populated and deleted

gnufied · 2021-03-22T17:05:04Z

/lgtm

gnufied · 2021-04-07T17:10:01Z

/assign @msau42

msau42 · 2021-04-14T05:08:27Z

pkg/controller/controller.go

@@ -320,6 +321,16 @@ func (ctrl *resizeController) syncPVC(key string) error {
 		return fmt.Errorf("expected volume but got %+v", volumeObj)
 	}

+	if ctrl.isNodeExpandComplete(pvc, pv) && metav1.HasAnnotation(pv.ObjectMeta, util.AnnPreResizeCapacity) {
+		if err := ctrl.deletePreResizeCapAnnotation(pv); err != nil {


how come resize controller is deleting the annotation? Shouldn't kubelet do it after nodeexpand is complete?

This is because kubelet does not have the permission to modify PV objects.

@gnufied is this an issue? Does this mean plugins that don't support controller resize and don't run the resizer will get this fix?

Currently I think external-resizer is required even for plugins that don't support controller expansion, because in that case external-resizer calls a NO-OP control-plane expansion and successfully expands the PV. There is no way to update PV spec from kubelet otherwise. So every plugin that supports expansion needs to run resizer.

bc0504a Merge pull request kubernetes-csi#140 from jsafrane/remove-unused-k8s-libs 5b1de1a go-get-kubernetes.sh: remove unused k8s libs 49b4269 Merge pull request kubernetes-csi#120 from pohly/add-kubernetes-release f7e7ee4 docs: steps for adding testing against new Kubernetes release git-subtree-dir: release-tools git-subtree-split: bc0504ad76ac6e20d0d7c60d46f62c7ff7591f8c

cmd/csi-resizer/main.go

necessary. delete when pvc.status.capacity >= pv.spec.capacity

Jiawei0227 · 2021-04-29T18:07:29Z

Any updates on this? We are pending on csi-resizer release

pkg/controller/controller.go

gnufied · 2021-04-30T15:02:43Z

Can you squash 4 last commits in one?

sunpa93 · 2021-04-30T16:35:50Z

Can you squash 4 last commits in one?

Done :)

gnufied · 2021-04-30T17:11:01Z

/lgtm

gnufied · 2021-05-04T02:07:45Z

/approve

k8s-ci-robot · 2021-05-04T02:07:50Z

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gnufied, sunpa93

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…ncy-openshift-4.14-ose-csi-external-resizer Updating ose-csi-external-resizer images to be consistent with ART

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k8s-ci-robot requested review from gnufied and mlmhl February 23, 2021 00:15

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sunpa93 mentioned this pull request Feb 23, 2021

fix: use pv annotation to trigger filesystem resize when necessary kubernetes/kubernetes#99326

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sunpa93 force-pushed the fs_resize_fix branch from 024a4c3 to ea04a85 Compare February 24, 2021 00:16

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sunpa93 force-pushed the fs_resize_fix branch from a4e68a7 to 59ff70b Compare April 27, 2021 19:48

sunpa93 added 3 commits April 27, 2021 22:07

fix: add annotation to pv after resize if filesystem resize is

f238af5

necessary. delete when pvc.status.capacity >= pv.spec.capacity

allow toggling of use of PV annotation to mark its pre-resize capacity

5e31bd3

use feature gate for toggling FsResizeAnnotation feature on/off

88ca032

sunpa93 force-pushed the fs_resize_fix branch from a770307 to 9b503b8 Compare April 27, 2021 22:20

gnufied reviewed Apr 30, 2021

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rebase and vendor update

ff1a210

sunpa93 force-pushed the fs_resize_fix branch from 892e201 to ff1a210 Compare April 30, 2021 16:35

k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Apr 30, 2021

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dobsonj pushed a commit to dobsonj/external-resizer that referenced this pull request Oct 16, 2023

Merge pull request kubernetes-csi#140 from openshift-bot/art-consiste…

ee117b6

…ncy-openshift-4.14-ose-csi-external-resizer Updating ose-csi-external-resizer images to be consistent with ART

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fix: use pv annotation to trigger filesystem resize when necessary #140

fix: use pv annotation to trigger filesystem resize when necessary #140

sunpa93 commented Feb 23, 2021 •

edited by gnufied

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fix: use pv annotation to trigger filesystem resize when necessary #140

fix: use pv annotation to trigger filesystem resize when necessary #140

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