Can't take a volume snapshot

Question

Can't take a volume snapshot

simonebenati opened this issue 8 months ago · comments

Describe the bug
As the title states, I'm not able to take a volume snapshot using volumesnapshotclass provided from documentation.

Environments

Version: 1.25.12+rke2r1
OS: ubuntu 20

To Reproduce
Steps to reproduce the behavior:

using k10tools downloadable for free, here: https://docs.kasten.io/latest/operating/k10tools.html -> https://github.com/kastenhq/external-tools/releases
create the following file: csi_check.yaml with the following content:

run_as_user: 1000
storage_class: topolvm

run the following command:
./k10tools primer storage check csi -f csi_check.yaml
it'll use kubestr capabilities to determine whether or not the csi can snapshot or not
https://kubestr.io/

Expected behavior
Be able to take a snapshot

Additional context
this is the error from k10 tools:

./k10tools primer storage check csi -f csi_check.yaml
Using "csi_check.yaml" file content as config source
         Found multiple snapshot API group versions, using preferred.
I1005 15:55:36.920115   47398 request.go:690] Waited for 1.008984708s due to client-side throttling, not priority and fairness, request: GET:https://rancher.infrastructure.k8s.oncloudfire.it/k8s/clusters/c-m-pwvq8c99/apis/coordination.k8s.io/v1
Creating application
  -> Created pod (kubestr-csi-original-podbdtph) and pvc (kubestr-csi-original-pvcvmdfd)
Taking a snapshot
Cleaning up resources
CSI Snapshot Walkthrough:
  Using annotated VolumeSnapshotClass (csi-topolvm-snapclass)
  Failed to create Snapshot: CSI Driver failed to create snapshot for PVC (kubestr-csi-original-pvcvmdfd) in Namespace (default): Failed to check and update snapshot content: failed to take snapshot of the volume c5e1307a-6d75-440c-a52e-2e58dfcc1f5b: "rpc error: code = Internal desc = logicalvolumes.topolvm.io \"snapshot-82477a8b-12cc-466e-bc0b-f65c4f195c01\" not found"  -  Error
Error: {"message":"Failed to create Snapshot: CSI Driver failed to create snapshot for PVC (kubestr-csi-original-pvcvmdfd) in Namespace (default): Failed to check and update snapshot content: failed to take snapshot of the volume c5e1307a-6d75-440c-a52e-2e58dfcc1f5b: \"rpc error: code = Internal desc = logicalvolumes.topolvm.io \\\"snapshot-82477a8b-12cc-466e-bc0b-f65c4f195c01\\\" not found\"","function":"kasten.io/k10/kio/tools/k10primer.(*TestRetVal).Errors","linenumber":172,"file":"kasten.io/k10/kio/tools/k10primer/k10primer.go:172"}

FUKAYA Toshikuni · Answer 1 · Fri Oct 06 2023 16:35:22 GMT+0800 (China Standard Time)

Could you provide the following information?

which topolvm version is used?
how do you install it? helm or other? if you use helm, please show me values.yaml.
lv related information. show me vgs and lvs outputs.

Simone Benati · Answer 2 · Fri Oct 06 2023 17:14:26 GMT+0800 (China Standard Time)

Hello Toshipp :)

Topolvm version is:

helm.sh/chart: topolvm-11.3.0
 app.kubernetes.io/name: topolvm
 app.kubernetes.io/instance: helm-chart
 app.kubernetes.io/version: "0.19.1"

We used helm, the values are the following:

useLegacy: false

image:
  # image.repository -- TopoLVM image repository to use.
  repository: ghcr.io/topolvm/topolvm-with-sidecar

  # image.tag -- TopoLVM image tag to use.
  # @default -- `{{ .Chart.AppVersion }}`
  tag:  # 0.18.1

  # image.pullPolicy -- TopoLVM image pullPolicy.
  pullPolicy:  # Always

  # image.pullSecrets -- List of imagePullSecrets.
  pullSecrets: []

  csi:
    # image.csi.nodeDriverRegistrar -- Specify csi-node-driver-registrar: image.
    # If not specified, `ghcr.io/topolvm/topolvm-with-sidecar:{{ .Values.image.tag }}` will be used.
    nodeDriverRegistrar:  # registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.2.0

    # image.csi.csiProvisioner -- Specify csi-provisioner image.
    # If not specified, `ghcr.io/topolvm/topolvm-with-sidecar:{{ .Values.image.tag }}` will be used.
    csiProvisioner:  # registry.k8s.io/sig-storage/csi-provisioner:v2.2.1

    # image.csi.csiResizer -- Specify csi-resizer image.
    # If not specified, `ghcr.io/topolvm/topolvm-with-sidecar:{{ .Values.image.tag }}` will be used.
    csiResizer:  # registry.k8s.io/sig-storage/csi-resizer:v1.2.0

    # image.csi.csiSnapshotter -- Specify csi-snapshot image.
    # If not specified, `ghcr.io/topolvm/topolvm-with-sidecar:{{ .Values.image.tag }}` will be used.
    csiSnapshotter:  # registry.k8s.io/sig-storage/csi-snapshotter:v5.0.1

    # image.csi.livenessProbe -- Specify livenessprobe image.
    # If not specified, `ghcr.io/topolvm/topolvm-with-sidecar:{{ .Values.image.tag }}` will be used.
    livenessProbe:  # registry.k8s.io/sig-storage/livenessprobe:v2.3.0

# A scheduler extender for TopoLVM
scheduler:
  # scheduler.enabled --  If true, enable scheduler extender for TopoLVM
  enabled: false #was true but now false due to storage capacity tracking enabled

  # scheduler.args -- Arguments to be passed to the command.
  args: []

  # scheduler.type -- If you run with a managed control plane (such as GKE, AKS, etc), topolvm-scheduler should be deployed as Deployment and Service.
  # topolvm-scheduler should otherwise be deployed as DaemonSet in unmanaged (i.e. bare metal) deployments.
  # possible values:  daemonset/deployment
  type: daemonset

  # Use only if you choose `scheduler.type` deployment
  deployment:
    # scheduler.deployment.replicaCount -- Number of replicas for Deployment.
    replicaCount: 2

  # Use only if you choose `scheduler.type` deployment
  service:
    # scheduler.service.type -- Specify Service type.
    type: LoadBalancer
    # scheduler.service.clusterIP -- Specify Service clusterIP.
    clusterIP:  # None
    # scheduler.service.nodePort -- (int) Specify nodePort.
    nodePort:  # 30251

  # scheduler.updateStrategy -- Specify updateStrategy on the Deployment or DaemonSet.
  updateStrategy: {}
  #  rollingUpdate:
  #    maxUnavailable: 1
  #  type: RollingUpdate

  # scheduler.terminationGracePeriodSeconds -- (int) Specify terminationGracePeriodSeconds on the Deployment or DaemonSet.
  terminationGracePeriodSeconds:  # 30

  # scheduler.minReadySeconds -- (int) Specify minReadySeconds on the Deployment or DaemonSet.
  minReadySeconds:  # 0

  # scheduler.affinity -- Specify affinity on the Deployment or DaemonSet.
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
          - matchExpressions:
              - key: node-role.kubernetes.io/control-plane
                operator: Exists
          # node-role.kubernetes.io/master label is not used in k8s 1.24+.
          # TODO: remove this when minimum supported version becomes 1.24.
          - matchExpressions:
              - key: node-role.kubernetes.io/master
                operator: Exists

  podDisruptionBudget:
    # scheduler.podDisruptionBudget.enabled -- Specify podDisruptionBudget enabled.
    enabled: true

  # scheduler.tolerations -- Specify tolerations on the Deployment or DaemonSet.
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/
  tolerations:
    - key: CriticalAddonsOnly
      operator: Exists
    - key: node-role.kubernetes.io/control-plane
      effect: NoSchedule
    # node-role.kubernetes.io/master taint will not be used in k8s 1.25+.
    # cf. https://github.com/kubernetes/enhancements/blob/master/keps/sig-cluster-lifecycle/kubeadm/2067-rename-master-label-taint/README.md
    # TODO: remove this when minimum supported version becomes 1.25.
    - key: node-role.kubernetes.io/master
      effect: NoSchedule

  # scheduler.nodeSelector -- Specify nodeSelector on the Deployment or DaemonSet.
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
  nodeSelector: {}

  # scheduler.priorityClassName -- Specify priorityClassName on the Deployment or DaemonSet.
  priorityClassName:

  # scheduler.schedulerOptions -- Tune the Node scoring.
  # ref: https://github.com/topolvm/topolvm/blob/master/deploy/README.md
  schedulerOptions: {}
  #  default-divisor: 1
  #  divisors:
  #    ssd: 1
  #    hdd: 10

  options:
    listen:
      # scheduler.options.listen.host -- Host used by Probe.
      host: localhost
      # scheduler.options.listen.port -- Listen port.
      port: 9251

# lvmd service
lvmd:
  # lvmd.managed -- If true, set up lvmd service with DaemonSet.
  managed: true

  # lvmd.socketName -- Specify socketName.
  socketName: /run/topolvm/lvmd.sock

  # lvmd.deviceClasses -- Specify the device-class settings.
  deviceClasses:
    - name: ssd
      volume-group: vg_data01
      default: true
      spare-gb: 10

  # lvmd.lvcreateOptionClasses -- Specify the lvcreate-option-class settings.
  lvcreateOptionClasses: []
  # - name: ssd
  #   options:
  #     - --type=raid1

  # lvmd.args -- Arguments to be passed to the command.
  args: []

  # lvmd.priorityClassName -- Specify priorityClassName.
  priorityClassName:

  # lvmd.tolerations -- Specify tolerations.
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/
  tolerations:
    - key: database
      operator: Exists

  # lvmd.nodeSelector -- Specify nodeSelector.
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
  nodeSelector: {}

  # lvmd.volumes -- Specify volumes.
  volumes: []
  #  - name: lvmd-socket-dir
  #    hostPath:
  #      path: /run/topolvm
  #      type: DirectoryOrCreate

  # lvmd.volumeMounts -- Specify volumeMounts.
  volumeMounts: []
  #  - name: lvmd-socket-dir
  #    mountPath: /run/topolvm

  # lvmd.env -- extra environment variables
  env: []
  #  - name: LVM_SYSTEM_DIR
  #    value: /tmp

  # lvmd.additionalConfigs -- Define additional LVM Daemon configs if you have additional types of nodes.
  # Please ensure nodeSelectors are non overlapping.
  additionalConfigs: []
  #  - tolerations: []
  #      nodeSelector: {}
  #      device-classes:
  #        - name: ssd
  #          volume-group: myvg2
  #          default: true
  #          spare-gb: 10

  psp:
    # lvmd.psp.allowedHostPaths -- Specify allowedHostPaths.
    allowedHostPaths: []
    #  - pathPrefix: "/run/topolvm"
    #    readOnly: false

  # lvmd.updateStrategy -- Specify updateStrategy.
  updateStrategy: {}
  #  type: RollingUpdate
  #  rollingUpdate:
  #    maxSurge: 50%
  #    maxUnavailable: 50%

# CSI node service
node:
  # node.lvmdSocket -- Specify the socket to be used for communication with lvmd.
  lvmdSocket: /run/topolvm/lvmd.sock
  # node.kubeletWorkDirectory -- Specify the work directory of Kubelet on the host.
  # For example, on microk8s it needs to be set to `/var/snap/microk8s/common/var/lib/kubelet`
  kubeletWorkDirectory: /var/lib/kubelet

  # node.args -- Arguments to be passed to the command.
  args: []

  # node.securityContext. -- Container securityContext.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
  securityContext:
    privileged: true

  metrics:
    # node.metrics.enabled -- If true, enable scraping of metrics by Prometheus.
    enabled: true
    # node.metrics.annotations -- Annotations for Scrape used by Prometheus.
    annotations:
      prometheus.io/port: metrics

  prometheus:
    podMonitor:
      # node.prometheus.podMonitor.enabled -- Set this to `true` to create PodMonitor for Prometheus operator.
      enabled: false

      # node.prometheus.podMonitor.additionalLabels -- Additional labels that can be used so PodMonitor will be discovered by Prometheus.
      additionalLabels: {}

      # node.prometheus.podMonitor.namespace -- Optional namespace in which to create PodMonitor.
      namespace: ""

      # node.prometheus.podMonitor.interval -- Scrape interval. If not set, the Prometheus default scrape interval is used.
      interval: ""

      # node.prometheus.podMonitor.scrapeTimeout -- Scrape timeout. If not set, the Prometheus default scrape timeout is used.
      scrapeTimeout: ""

      # node.prometheus.podMonitor.relabelings -- RelabelConfigs to apply to samples before scraping.
      relabelings: []
      # - sourceLabels: [__meta_kubernetes_service_label_cluster]
      #   targetLabel: cluster
      #   regex: (.*)
      #   replacement: 1
      #   action: replace

      # node.prometheus.podMonitor.metricRelabelings -- MetricRelabelConfigs to apply to samples before ingestion.
      metricRelabelings: []
      # - sourceLabels: [__meta_kubernetes_service_label_cluster]
      #   targetLabel: cluster
      #   regex: (.*)
      #   replacement: 1
      #   action: replace

  # node.priorityClassName -- Specify priorityClassName.
  priorityClassName:

  # node.tolerations -- Specify tolerations.
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/
  tolerations:
    - key: database
      operator: Exists

  # node.nodeSelector -- Specify nodeSelector.
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
  nodeSelector: {}

  # node.volumes -- Specify volumes.
  volumes: []
  #  - name: registration-dir
  #    hostPath:
  #      path: /var/lib/kubelet/plugins_registry/
  #      type: Directory
  #  - name: node-plugin-dir
  #    hostPath:
  #      path: /var/lib/kubelet/plugins/topolvm.io/node
  #      type: DirectoryOrCreate
  #  - name: csi-plugin-dir
  #    hostPath:
  #      path: /var/lib/kubelet/plugins/kubernetes.io/csi
  #      type: DirectoryOrCreate
  #  - name: pod-volumes-dir
  #    hostPath:
  #      path: /var/lib/kubelet/pods/
  #      type: DirectoryOrCreate
  #  - name: lvmd-socket-dir
  #    hostPath:
  #      path: /run/topolvm
  #      type: Directory

  volumeMounts:
    # node.volumeMounts.topolvmNode -- Specify volumes.
    topolvmNode: []
    # - name: node-plugin-dir
    #   mountPath: /var/lib/kubelet/plugins/topolvm.io/node
    # - name: csi-plugin-dir
    #   mountPath: /var/lib/kubelet/plugins/kubernetes.io/csi
    #   mountPropagation: "Bidirectional"
    # - name: pod-volumes-dir
    #   mountPath: /var/lib/kubelet/pods
    #   mountPropagation: "Bidirectional"
    # - name: lvmd-socket-dir
    #   mountPath: /run/topolvm

  psp:
    # node.psp.allowedHostPaths -- Specify volumes.
    allowedHostPaths: []
    # - pathPrefix: "/var/lib/kubelet"
    #   readOnly: false
    # - pathPrefix: "/run/topolvm"
    #   readOnly: false

  # node.updateStrategy -- Specify updateStrategy.
  updateStrategy: {}
  #  type: RollingUpdate
  #  rollingUpdate:
  #    maxSurge: 50%
  #    maxUnavailable: 50%

# CSI controller service
controller:
  # controller.replicaCount -- Number of replicas for CSI controller service.
  replicaCount: 2

  # controller.args -- Arguments to be passed to the command.
  args: []

  storageCapacityTracking:
    # controller.storageCapacityTracking.enabled -- Enable Storage Capacity Tracking for csi-provisioner.
    enabled: true

  securityContext:
    # controller.securityContext.enabled -- Enable securityContext.
    enabled: true

  nodeFinalize:
    # controller.nodeFinalize.skipped -- Skip automatic cleanup of PhysicalVolumeClaims when a Node is deleted.
    skipped: false

  prometheus:
    podMonitor:
      # controller.prometheus.podMonitor.enabled -- Set this to `true` to create PodMonitor for Prometheus operator.
      enabled: false

      # controller.prometheus.podMonitor.additionalLabels -- Additional labels that can be used so PodMonitor will be discovered by Prometheus.
      additionalLabels: {}

      # controller.prometheus.podMonitor.namespace -- Optional namespace in which to create PodMonitor.
      namespace: ""

      # controller.prometheus.podMonitor.interval -- Scrape interval. If not set, the Prometheus default scrape interval is used.
      interval: ""

      # controller.prometheus.podMonitor.scrapeTimeout -- Scrape timeout. If not set, the Prometheus default scrape timeout is used.
      scrapeTimeout: ""

      # controller.prometheus.podMonitor.relabelings -- RelabelConfigs to apply to samples before scraping.
      relabelings: []
      # - sourceLabels: [__meta_kubernetes_service_label_cluster]
      #   targetLabel: cluster
      #   regex: (.*)
      #   replacement: 1
      #   action: replace

      # controller.prometheus.podMonitor.metricRelabelings -- MetricRelabelConfigs to apply to samples before ingestion.
      metricRelabelings: []
      # - sourceLabels: [__meta_kubernetes_service_label_cluster]
      #   targetLabel: cluster
      #   regex: (.*)
      #   replacement: 1
      #   action: replace

  # controller.terminationGracePeriodSeconds -- (int) Specify terminationGracePeriodSeconds.
  terminationGracePeriodSeconds:  # 10

  # controller.priorityClassName -- Specify priorityClassName.
  priorityClassName:

  # controller.updateStrategy -- Specify updateStrategy.
  updateStrategy: {}
  #  type: RollingUpdate
  #  rollingUpdate:
  #    maxSurge: 50%
  #    maxUnavailable: 50%

  # controller.minReadySeconds -- (int) Specify minReadySeconds.
  minReadySeconds:  # 0

  # controller.affinity -- Specify affinity.
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  affinity: |
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
              - key: app.kubernetes.io/component
                operator: In
                values:
                  - controller
              - key: app.kubernetes.io/name
                operator: In
                values:
                  - {{ include "topolvm.name" . }}
          topologyKey: kubernetes.io/hostname

  # controller.tolerations -- Specify tolerations.
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/
  tolerations:
    - key: database
      operator: Exists

  # controller.nodeSelector -- Specify nodeSelector.
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
  nodeSelector: {}

  # controller.volumes -- Specify volumes.
  volumes:
    - name: socket-dir
      emptyDir: {}

  podDisruptionBudget:
    # controller.podDisruptionBudget.enabled -- Specify podDisruptionBudget enabled.
    enabled: true

resources:
  # resources.topolvm_node -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  topolvm_node:
    requests:
      memory: 100Mi
      cpu: 100m
    limits:
      memory: 500Mi
      cpu: 500m
  # resources.csi_registrar -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  csi_registrar:
    requests:
      cpu: "25m"
      memory: "10Mi"
    limits:
      cpu: "200m"
      memory: "200Mi"
  # resources.liveness_probe -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  liveness_probe:
    requests:
      cpu: "25m"
      memory: "10Mi"
    limits:
      cpu: "200m"
      memory: "200Mi"
  # resources.topolvm_controller -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  topolvm_controller: 
    requests:
      memory: "50Mi"
      cpu: "50m"
    limits:
      memory: "200Mi"
      cpu: "200m"
  # resources.csi_provisioner -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  csi_provisioner:
    requests:
      memory: "50Mi"
      cpu: "50m"
    limits:
      memory: "200Mi"
      cpu: "200m"
  # resources.csi_resizer -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  csi_resizer:
    requests:
      memory: "50Mi"
      cpu: "50m"
    limits:
      memory: "200Mi"
      cpu: "200m"
  # resources.csi_snapshotter -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  csi_snapshotter:
    requests:
      memory: "50Mi"
      cpu: "50m"
    limits:
      memory: "200Mi"
      cpu: "200m"
  # resources.lvmd -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  lvmd:
    requests:
      memory: 100Mi
      cpu: 100m
    limits:
      memory: 500Mi
      cpu: 500m
  # resources.topolvm_scheduler -- Specify resources.
  ## ref: https://kubernetes.io/docs/user-guide/compute-resources/
  topolvm_scheduler:
    requests:
      memory: "50Mi"
      cpu: "50m"
    limits:
      memory: "200Mi"
      cpu: "200m"

livenessProbe:
  # livenessProbe.topolvm_node -- Specify resources.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
  topolvm_node:
    failureThreshold:
    initialDelaySeconds: 10
    timeoutSeconds: 3
    periodSeconds: 60
  # livenessProbe.csi_registrar -- Specify livenessProbe.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
  csi_registrar:
    failureThreshold:
    initialDelaySeconds: 10
    timeoutSeconds: 3
    periodSeconds: 60
  # livenessProbe.topolvm_controller -- Specify livenessProbe.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
  topolvm_controller:
    failureThreshold:
    initialDelaySeconds: 10
    timeoutSeconds: 3
    periodSeconds: 60
  # livenessProbe.lvmd -- Specify livenessProbe.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
  lvmd:
    failureThreshold:
    initialDelaySeconds: 10
    timeoutSeconds: 3
    periodSeconds: 60
  # livenessProbe.topolvm_scheduler -- Specify livenessProbe.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
  topolvm_scheduler:
    failureThreshold:
    initialDelaySeconds: 10
    timeoutSeconds: 3
    periodSeconds: 60

# storageClasses -- Whether to create storageclass(es)
# ref: https://kubernetes.io/docs/concepts/storage/storage-classes/
storageClasses:
  - name: topolvm  # Defines name of storage class.
    storageClass:
      # Supported filesystems are: ext4, xfs, and btrfs.
      fsType: xfs
      # reclaimPolicy
      reclaimPolicy:  # Delete
      # Additional annotations
      annotations: {}
      # Default storage class for dynamic volume provisioning
      # ref: https://kubernetes.io/docs/concepts/storage/dynamic-provisioning
      isDefaultClass: false
      # volumeBindingMode can be either WaitForFirstConsumer or Immediate. WaitForFirstConsumer is recommended because TopoLVM cannot schedule pods wisely if volumeBindingMode is Immediate.
      volumeBindingMode: WaitForFirstConsumer
      # enables CSI drivers to expand volumes. This feature is available for Kubernetes 1.16 and later releases.
      allowVolumeExpansion: true
      additionalParameters:
        "topolvm.io/device-class": "ssd"

webhook:
  # webhook.caBundle -- Specify the certificate to be used for AdmissionWebhook.
  caBundle:  # Base64-encoded, PEM-encoded CA certificate that signs the server certificate.
  # webhook.existingCertManagerIssuer -- Specify the cert-manager issuer to be used for AdmissionWebhook.
  existingCertManagerIssuer: {}
    # group: cert-manager.io
    # kind: Issuer
    # name: webhook-issuer
  podMutatingWebhook:
    # webhook.podMutatingWebhook.enabled -- Enable Pod MutatingWebhook.
    enabled: false #was true, because now we want to use storage capacity tracking instead of scheduler
  pvcMutatingWebhook:
    # webhook.pvcMutatingWebhook.enabled -- Enable PVC MutatingWebhook.
    enabled: true

# Container Security Context
# ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
securityContext:
  # securityContext.runAsUser -- Specify runAsUser.
  runAsUser: 10000
  # securityContext.runAsGroup -- Specify runAsGroup.
  runAsGroup: 10000

podSecurityPolicy:
  # podSecurityPolicy.create -- Enable pod security policy.
  ## ref: https://kubernetes.io/docs/concepts/policy/pod-security-policy/
  create: false

cert-manager:
  # cert-manager.enabled -- Install cert-manager together.
  ## ref: https://cert-manager.io/docs/installation/kubernetes/#installing-with-helm
  enabled: false

priorityClass:
  # priorityClass.enabled -- Install priorityClass.
  enabled: true
  # priorityClass.name -- Specify priorityClass resource name.
  name: topolvm
  # priorityClass.value  -- Specify priorityClass value.
  value: 1000000

snapshot:
  # snapshot.enabled -- Turn on the snapshot feature.
  enabled: true

lv:

root@worker01-rancher-opensource:~# vgs
  VG        #PV #LV #SN Attr   VSize    VFree
  vg_data01   1   1   0 wz--n- <150.00g    0

root@worker01-rancher-opensource:~# lvs
  LV        VG        Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lv_data01 vg_data01 -wi-ao---- <150.00g

FUKAYA Toshikuni · Answer 3 · Tue Oct 10 2023 17:47:54 GMT+0800 (China Standard Time)

Hi @simonebenati
Currently, TopoLVM only supports snapshots on thin volumes.
https://github.com/topolvm/topolvm/blob/main/docs/limitations.md#snapshots-can-be-created-only-for-thin-volumes

Simone Benati · Answer 4 · Tue Oct 10 2023 18:01:25 GMT+0800 (China Standard Time)

@toshipp Thank you for your reply,
How can I take a snapshot on thin volumes? Do I have to change anything in the value file?

FUKAYA Toshikuni · Answer 5 · Tue Oct 10 2023 18:08:06 GMT+0800 (China Standard Time)

@simonebenati
You should set up a storage class to use a thin pool correctly like
https://github.com/topolvm/topolvm/blob/main/example/values.yaml#L17-L24.
Also, set up lvmd. see https://github.com/topolvm/topolvm/blob/main/deploy/lvmd-config/lvmd.yaml#L7-L12.
Of course, should create a thin pool on your machine.
https://github.com/topolvm/topolvm/blob/main/example/Makefile#L112

Simone Benati · Answer 6 · Tue Oct 10 2023 18:27:35 GMT+0800 (China Standard Time)

Thank you!
How do I go about setting up lvmd? I have not much experience is there a section in the docs?

FUKAYA Toshikuni · Answer 7 · Wed Oct 11 2023 16:30:57 GMT+0800 (China Standard Time)

Please read the document.
https://github.com/topolvm/topolvm/blob/main/deploy/README.md#lvmd

github-actions · Answer 8 · Sat Nov 11 2023 07:34:30 GMT+0800 (China Standard Time)

This issue has been automatically marked as stale because it has not had any activity for 30 days. It will be closed in a week if no further activity occurs. Thank you for your contributions.

github-actions · Answer 9 · Sat Nov 18 2023 07:34:47 GMT+0800 (China Standard Time)

This issue has been automatically closed due to inactivity. Please feel free to reopen this issue (or open a new one) if this still requires investigation. Thank you for your contribution.