Permission denied when creating /persistentvolumes subdirectory

[tibbe]

It seems that using /persistentvolumes to mount the NFS share is hardcoded and fails since the node doesn't have permission to create that directory (or subdirectories):

I0111 17:40:04.382995       1 controller.go:987] provision "default/test-claim" class "nfs-client": started
I0111 17:40:04.393352       1 event.go:221] Event(v1.ObjectReference{Kind:"PersistentVolumeClaim", Namespace:"default", Name:"test-claim", UID:"37b7b714-39c1-43fb-82f2-8cc01b037288", APIVersion:"v1", ResourceVersion:"11830", FieldPath:""}): type: 'Normal' reason: 'Provisioning' External provisioner is provisioning volume for claim "default/test-claim"
W0111 17:40:04.395679       1 controller.go:746] Retrying syncing claim "default/test-claim" because failures 4 < threshold 15
E0111 17:40:04.396629       1 controller.go:761] error syncing claim "default/test-claim": failed to provision volume with StorageClass "nfs-client": unable to create directory to provision new pv: mkdir /persistentvolumes/default-test-claim-pvc-37b7b714-39c1-43fb-82f2-8cc01b037288: permission denied
I0111 17:40:04.396020       1 event.go:221] Event(v1.ObjectReference{Kind:"PersistentVolumeClaim", Namespace:"default", Name:"test-claim", UID:"37b7b714-39c1-43fb-82f2-8cc01b037288", APIVersion:"v1", ResourceVersion:"11830", FieldPath:""}): type: 'Warning' reason: 'ProvisioningFailed' failed to provision volume with StorageClass "nfs-client": unable to create directory to provision new pv: mkdir /persistentvolumes/default-test-claim-pvc-37b7b714-39c1-43fb-82f2-8cc01b037288: permission denied

I installed the ARM version using helm, like so:

helm install nfs-subdir-external-provisioner . --set nfs.server=192.168.0.194 --set nfs.path=/nfs-storage

My NFS server exports are set up as follows:

$ cat /etc/exports 
/export       192.168.0.0/24(rw,fsid=0,insecure,no_subtree_check,async)
/export/nfs-storage 192.168.0.0/24(rw,nohide,insecure,no_subtree_check,async)

[tibbe]

This is on a clean K3s install on a clean install of Raspberry Pi OS (32-bit). NFS server set up according to https://www.raspberrypi.org/documentation/configuration/nfs.md, except using a different directory (/export/nfs-storage) for the share.

[yonatankahana]

what are the permissions in the folder /export/nfs-storage?

ls -lnd /export/nfs-storage

[tibbe]

Seems to have been an issue with folder permissions, as you suggested. Works with:

$ ls -lnd /export/nfs-storage
drwxrwxrwx 3 0 0 4096 Jan 11 18:41 /export/nfs-storage

(i.e. chmod 777).