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The controller object is the physical fibre-channel interface port on the server that operate as FC targets. It is identified by the name fc0 ... fc<n> on FC only server and on both FC & iSCSI server it starts from fc1. For iSCSI operation it is referred by the generic name `iscsi' to represent all the physical ethernet interfaces. Know controller interface types is listed below


iscsiAny network interface recognized by kernel. More control over specific network by specifying iSCSI portal tag and name.
fcnSelects the fibre channel target port as specified by the instance number n
nvmet-rdmaAny RDMA transport registered with the kernel. Typically they can be Infiniband, iWARP, or ROCE
nvmet-fcUses the NVMeoF transport provider over Fibre-Channel
nvmet-tcpThis uses standard TCP network interface just like iSCSI



Usage

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show controller

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themeDJango
mayacli show controller
iSCSI on eth0ens192:
eth0ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 14601500
        inet 10.1381.01.7154  netmask 255.255.255.2550  broadcast 10.1381.01.7255
        inet6 fe80::4001a0ec:affe248:fe8a47e5:78ad0  prefixlen 64  scopeid 0x20<link>
        ether 42:01:0a:8a:00:07 txqueuelen 1000 (Ethernet)
 RX packets 289717 bytes 21139698 (20.1 MiB)
 00:0c:29:9a:42:38  txqueuelen 1000  (Ethernet)
        RX packets 927  bytes 76926 (75.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 524  bytes 75407 (73.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

iSCSI on ens161:
ens161: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.4.100  netmask 255.255.255.0  broadcast 192.168.4.255
        inet6 fe80::2438:8d4d:b7f2:7e02  prefixlen 64  scopeid 0x20<link>
        ether f4:52:14:2e:06:20  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

iSCSI on ens161d1:
ens161d1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether f4:52:14:2e:06:21  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

NVMET on ens161:
ens161: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.4.100  netmask 255.255.255.0  broadcast 192.168.4.255
        inet6 fe80::2438:8d4d:b7f2:7e02  prefixlen 64  scopeid 0x20<link>
        ether f4:52:14:2e:06:20  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6200120  bytes 108437812690 (100.0 GiBB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

NVMET on ens161d1:
ens161d1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether f4:52:14:2e:06:21  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0