Volume mode
Volume mode is a PersistentVolumeClaim setting that selects filesystem or raw-block presentation for the requested storage.
Acing the Certified Kubernetes Administrator Exam, Second Edition
Block volume mode exposes a persistent volume as an unformatted raw block device rather than a mounted filesystem.
- How it is used
- Guides persistent-volume configuration when workloads require either a mounted directory or a raw block device.
- How deep it goes
- Defines both modes, shows the YAML field and verification command, but does not require creating the underlying block storage.
- Examples
- Uses PV YAML, kubectl apply, kubectl describe, local disks, EBS, Azure Disk, iSCSI, Fibre Channel, and CephFS.
- What you can do after
- Configure a PV as FileSystem or Block and verify the resulting mode with kubectl.
Read how Acing the Certified Kubernetes Administrator Exam, Second Edition explains volume mode →
Kubernetes in Action, Second Edition
Volume mode is a PersistentVolumeClaim specification that selects filesystem or raw-block presentation for the requested storage.
- How it is used
- Selects whether a PersistentVolumeClaim receives directory-mounted filesystem storage or a raw block device.
- How deep it goes
- Defines both modes, their container presentation, default behavior, and typical use, but does not detail implementation internals.
- Examples
- Uses a quiz-data PersistentVolumeClaim that omits volumeMode and therefore requests filesystem storage.
- What you can do after
- Configure a PersistentVolumeClaim to request filesystem or raw-block presentation for an application.
Read how Kubernetes in Action, Second Edition explains volume mode →
Related concepts
- persistent volumeconfigures · A persistent volume is durable storage provisioned independently of an individual workload’s lifecycle, allowing data to survive workload replacement or restart.
- persistent volume claimconfigures · A PersistentVolumeClaim is a Kubernetes resource through which a workload requests persistent storage with specified capacity, access modes, and other storage characteristics.
- file systemconfigures · A file system is a software-managed structure and interface for organizing, naming, storing, and accessing files and directories on storage.
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