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Chapter 1. What's New in this Release?
This section describes the key features and enhancements in the Container-Native Storage 3.9 release.
- Expanding the Persistent Volume Size: With this release, the persistent volume size for dynamically provisioned volumes on file storage can be increased by increasing the persistent volume claim. The parameter allowVolumeExpansion has to be set to "true" in the storage class file to enable this feature. For more information, refer https://access.redhat.com/documentation/en-us/container-native_storage/3.9/html/container-native_storage_for_openshift_container_platform/chap-Documentation-Red_Hat_Gluster_Storage_Container_Native_with_OpenShift_Platform-OpenShift_Creating_Persistent_Volumes#sect_expanding_pv.
- Providing a Custom Volume Name Prefix for a Persistent Volume: You can provide a custom volume name prefix to the persistent volume that is created in both file and block storage. By providing a custom volume name prefix, users can now easily search/filter the volumes based on:
- Any string that was provided as the field value of "volnameprefix" in the storageclass file.
- Persistent volume claim name.
- Project/Namespace name.
The parameter volumenameprefix has to be included in the storage class file to enable this feature. For more information to enable this for block storage, refer https://access.redhat.com/documentation/en-us/container-native_storage/3.9/html/container-native_storage_for_openshift_container_platform/Block_Storage#sect_block-custom-volname-prefix. For more information to enable this for file storage, refer, https://access.redhat.com/documentation/en-us/container-native_storage/3.9/html/container-native_storage_for_openshift_container_platform/chap-Documentation-Red_Hat_Gluster_Storage_Container_Native_with_OpenShift_Platform-OpenShift_Creating_Persistent_Volumes#sect_file-custom-volname-prefix. - Viewing Volume Metrics: With this release you can view the details and various metrics that show the persistent volume consumption in addition to the allocated persistent volume size for dynamically provisioned volumes on file storage. The different metrics that can be viewed on Prometheus are:
kubelet_volume_stats_available_bytes: Number of available bytes in the volume.kubelet_volume_stats_capacity_bytes: Capacity in bytes of the volume.kubelet_volume_stats_inodes: Maximum number of inodes in the volume.kubelet_volume_stats_inodes_free: Number of free inodes in the volume.kubelet_volume_stats_inodes_used: Number of used inodes in the volume.kubelet_volume_stats_used_bytes: Number of used bytes in the volume.
For more information about Volume metrics, refer https://access.redhat.com/documentation/en-us/container-native_storage/3.9/html/container-native_storage_for_openshift_container_platform/chap-documentation-red_hat_gluster_storage_container_native_with_openshift_platform-openshift_creating_persistent_volumes#enable_vol_metrics.
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