Access Modes

Access Modes

Access Modes and Reclaim Policies

An access mode states how a volume may be mounted, and the storage must support it:

PersistentVolume access modes
Mode	Short	Meaning	Typical storage
ReadWriteOnce	RWO	Read-write by Pods on one node	Block disks, local-path
ReadOnlyMany	ROX	Read-only by many nodes	NFS, snapshots
ReadWriteMany	RWX	Read-write by many nodes	NFS, CephFS, EFS, Azure 6 Files
ReadWriteOncePod	RWOP	Read-write by one Pod (stable 1.29)	CSI block and file drivers

RWO is per node: two Pods on one node can share it, which RWOP prevents. The reclaim policy acts when the claim is deleted: Delete (the default for dynamic classes) removes volume and data; Retain (the default for hand-made volumes) keeps both and marks the volume Released, unbindable until cleaned up; Recycle is deprecated:

Deleting claims under the Delete and Retain policiesShell

kubectl delete pvc notes manual-claim >/dev/null
sleep 10; kubectl get pv -o custom-columns=$PVS
docker exec l3-booknest-worker ls /var/local-path-provisioner | grep -c "$PV"
kubectl delete pv manual-pv >/dev/null

Output

NAME        STATUS     SIZE   CLAIM          POLICY
manual-pv   Released   1Gi    manual-claim   Retain
0

The dynamic volume and its directory (count 0) are gone; the hand-made one stayed Released until deleted.

MENU