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Mount Options

This example shows how to apply mount options to JuiceFS persistence volume (PV).

Patches

Ensure you have already get familiar with static-provisioning example.

Patch the persistent volume spec with csi/volumeAttributes/mountOptions.

apiVersion: v1
kind: PersistentVolume
metadata:
  name: juicefs-aws-us-east-1
spec:
  csi:
    volumeAttributes:
      mountOptions: "metacache,cache-size=100,cache-dir=/var/foo"

Refer to JuiceFS command reference for all supported options.

Apply the configurations

Build the example with kustomize and apply with kubectl

kustomize build | kubectl apply -f -

or apply with kubectl >= 1.14

kubectl apply -k .

Check mount options are customized

After the configuration is applied, verify that pod is running:

>> kubectl get pods

Also you can verify that mount options are customized in the mounted JuiceFS filesystem:

>> kubectl exec -ti juicefs-csi-node-2zz7h -c juicefs-plugin sh

sh-4.2# yum install procps
sh-4.2# ps xf
...
root       342  0.0  1.1 122484 11596 ?        S    12:02   0:00 /usr/bin/python2 /sbin/mount.juicefs csi-demo /var/lib/kubelet/pods/f513c3e5-7576-11e9-a400-0aa5dd01d816/volumes/kubernetes.io~csi/juicefs/mount -o rw,cache-dir=/var/foo,cache-size=124,metacache HOSTNAME=ip-
root       344  0.5  5.1  70632 52892 ?        S<l  12:02   0:03  \_ juicefs -mountpoint /var/lib/kubelet/pods/f513c3e5-7576-11e9-a400-0aa5dd01d816/volumes/kubernetes.io~csi/juicefs/mount -ssl -cacheDir /var/foo/csi-demo -cacheSize 124 -o fsname=JuiceFS:csi-demo,allow_oth

Note that -cacheDir is different from default value /var/jfsCache/csi-demo and -cacheSize is customized as 124.