Huawei CSI

Table 1 Features supported by Huawei storage and constraints

Feature	OceanStor V5	OceanStor	OceanStor Dorado
Static Provisioning	FC/iSCSI	FC/iSCSI/NVMe over RoCE/NVMe over FC/NVMe over TCP	FC/iSCSI/NVMe over RoCE/NVMe over FC/NVMe over TCP
Dynamic Provisioning
Manage Provisioning
Expand Persistent Volume	Volumes created in Dynamic Provisioning or Manage Provisioning mode are supported. The provisioned PVC whose volumeType is lun and accessModes is ReadOnlyMany does not support capacity expansion.
Create VolumeSnapshot	Volumes created in Dynamic Provisioning or Manage Provisioning mode are supported.
Delete VolumeSnapshot	Supported
Restore VolumeSnapshot	Supported
Clone Persistent Volume	Volumes created in Dynamic Provisioning or Manage Provisioning mode are supported.
Raw Block Volume	Supported
Topology	Supported
Generic Ephemeral Volumes	Supported
Access Mode	RWO/ROX/RWOP: supported. RWOP is supported only in Kubernetes 1.22 or later. RWX: supported only by Raw Block volumes
QoS	Supported. Only system users can configure QoS.
Application type	Not supported	Supported
Volume HyperMetro	Not supported	Supported (FC/iSCSI+DM-Multipath)
Multiple vStores	Not supported. Only single-vStore interconnection is supported.

When using the iSCSI protocol to connect the CSI to a storage system with multiple controller enclosures, you need to log in to the storage background and run the change target_name display_mode mode=Full command to ensure that the target IQN obtained by the CSI from the storage system is the same as the actual IQN.
If a container platform is deployed on a virtualization platform, the iSCSI protocol is recommended when the CSI is connected to SAN storage.
If the FC, NVMe over FC, or NVMe over RoCE protocol is required, the virtualization platform needs to be configured. In this case, the customer’s virtualization team needs to provide technical support.
When NVMe over RoCE or NVMe over FC is used, the supported nvme-cli tool version is 1.9 or later. When NVMe over TCP is used, the supported nvme-cli tool version is 2.0 or later. The query command is nvme version.
A single cluster can connect to only one storage vStore. Initiators are associated with a single vStore on the storage system. If multiple vStores are interconnected, some vStores cannot obtain the initiator permission. As a result, storage resources fail to be mapped and mounted.