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New configuration options are introduced in order to manage NFS over RDMA feature. Including enable/disable NFS over RDMA globally, filter RoCEv2 capable network interfaces for an IP pool, and check ROCEv2 capability of network interfaces.
This allows storage administrators to enable or disable NFS over RDMA capability cluster wide. Below shows the option in CLI command and Figure 13 shows the option in WebUI.
# isi nfs settings global view
NFS Service Enabled: Yes
NFSv3 Enabled: Yes
NFSv4 Enabled: Yes
v4.0 Enabled: No
v4.1 Enabled: Yes
v4.2 Enabled: Yes
NFS RDMA Enabled: Yes
Rquota Enabled: No
This option allows administrators to proactively create IP pools that contains only RoCEv2 capable network interfaces. It is not allowed if you try to add a RoCEv2 incapable network interface into the NFSv3 RDMA RRoCE only IP pools. More specifically, this option makes NFS failover using dynamic IP pool still work with NFSv3 over RDMA scenarios. See section SmartConnect for more details about dynamic IP pool failover.
In CLI, this option is --nfs-rroce-only shown as below. The equivalent option in WebUI is called Enable NFSoRDMA, highlighted in Figure 14, once the option enabled, all ROCEv2 incapable network interfaces are hidden and removed from the IP pool.
# isi network pools view groupnet0.40g.40gpool
ID: groupnet0.40g.40gpool
Groupnet: groupnet0
Subnet: 40g
Name: 40gpool
...
...
...
Static Routes: -
NFS RDMA RRoCE only: Yes
Starting from OneFS 9.2, RoCEv2 capable network interface contains a flag SUPPORTS_RDMA_RRoCE. This flag is only usable through the CLI command shown below.
# isi network interfaces list -v --nodes=1
IP Addresses: 172.16.200.29
LNN: 1
Name: 40gige-1
NIC Name: mlxen0
Owners: groupnet0.40g.40gpool
Status: Up
VLAN ID: -
Default IPv4 Gateway: -
Default IPv6 Gateway: -
MTU: 9000
Access Zone: System
Flags: ACCEPT_ROUTER_ADVERT, SUPPORTS_RDMA_RRoCE