Could not resize Luks volume ?

[albundy83]

/kind bug

What happened? Hello, I have tried to increase PVC volume size but it just fails :( Here the error message :

MountVolume.Setup failed while expanding volume for volume "pvc-xxxxxxxxxxxxxxx" : Expander.NodeExpand failed to expand the volume : rpc error: code = Internal desc = Could not resize Luks volume "vol-xxxxx": exit status 1

If I can provide you more details, just tell me :-)

What you expected to happen? Could not resize Luks volumeolume resized

How to reproduce it (as minimally and precisely as possible)? Here the storageclass I have used (I have tried with both ext4 and xfs):

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: gp2-delete-immediate-encrypted
allowVolumeExpansion: true
parameters:
  encrypted: 'true'
  luks-cipher: aes-xts-plain64
  csi.storage.k8s.io/node-stage-secret-name: luks-key
  csi.storage.k8s.io/node-stage-secret-namespace: kube-system
  csi.storage.k8s.io/provisioner-secret-name: osc-csi-bsu
  csi.storage.k8s.io/provisioner-secret-namespace: kube-system
  csi.storage.k8s.io/fstype: xfs
  type: gp2
provisioner: bsu.csi.outscale.com
reclaimPolicy: Delete
volumeBindingMode: Immediate
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: gp2-delete-immediate-encrypted-ext4
allowVolumeExpansion: true
parameters:
  encrypted: 'true'
  luks-cipher: aes-xts-plain64
  csi.storage.k8s.io/node-stage-secret-name: luks-key
  csi.storage.k8s.io/node-stage-secret-namespace: kube-system
  csi.storage.k8s.io/provisioner-secret-name: osc-csi-bsu
  csi.storage.k8s.io/provisioner-secret-namespace: kube-system
  csi.storage.k8s.io/fstype: ext4
  type: gp2
provisioner: bsu.csi.outscale.com
reclaimPolicy: Delete
volumeBindingMode: Immediate

Anything else we need to know?:

Environment

• Kubernetes version (use kubectl version): Client Version: version.Info{Major:"1", Minor:"27", GitVersion:"v1.27.15", GitCommit:"fb63712e1d017142977e88a23644b8e48b775665", GitTreeState:"clean", BuildDate:"2024-06-11T20:04:38Z", GoVersion:"go1.21.11", Compiler:"gc", Platform:"linux/amd64"} Kustomize Version: v5.0.1 Server Version: version.Info{Major:"1", Minor:"27", GitVersion:"v1.27.15+rke2r1", GitCommit:"fb63712e1d017142977e88a23644b8e48b775665", GitTreeState:"clean", BuildDate:"2024-06-19T05:07:04Z", GoVersion:"go1.21.11 X:boringcrypto", Compiler:"gc", Platform:"linux/amd64"}

• Driver version: v1.3.0

[albundy83]

It seems that it's a feature that has been implemented in earlier release. Any chance to increase the external-resizer ?

[Bizyroth]

Hello, i had the same problem but i solved it. Here how i did:

Prerequisite

• Be sure that your pv have a reclaim policy to "Retain", otherwise you will loose your data
• Ensure that your pv have a claimref to your pvc

How to do

• Scale down your pod
• Edit your pvc to increase the storage size and wait a little
• Copy your pvc conf
• Delete your pvc
• Go to your pv, one must be in Release state
• Edit the pv and delete in the claimRef section resourceVersion and id field
• Deploy your pvc with the same name has previously (it should reclaim the pv)
• Scale up your pod and it should work

Little analysis

I think that the increasing size of the volume goes well. After increasing the pvc size, i manually mount the outscale disk on a VM and everything was ok. But when i launched the pod i had the same error has you with Luks encryption.

Hope this help you

[albundy83]

Well, it should work without all this steps. It's juste that csi driver must be updated

[outscale-hmi]

https://github.com/outscale/osc-bsu-csi-driver/pull/814 PR already done

[albundy83]

Hello,

Will you release soon?