SMCD-DEVICE(8) Linux Programmer's Manual SMCD-DEVICE(8)

smcd-device - Print information about SMC-D devices

smcr-device - Print information about SMC-R devices


smcd [ OPTIONS ] device { COMMAND | help }

smcd device [ show ] [ all ]

smcr [ OPTIONS ] device { COMMAND | help }

smcr device [ show ] [ all ] [ netdev NETDEV ] [ ibdev IBDEV ]

The smcd device command displays SMC-D devices and their properties. The smcr device command displays SMC-R devices and their properties.

inspect the device properties

List all devices.

SMC-R only: limit the command output to the device with the specified network device name.

SMC-R only: limit the command output to the device port with the specified RoCE device name.

Network device name.

RoCE (InfiniBand) device name.

InfiniBand port of the RoCE device. According to the InfiniBand conventions, the port count starts at 1. Consequently, devices where each port is represented as a separate device will indicate the port as the first port for all ports.

State of the RoCE device port.

The RoCE device port is inactive.
The RoCE device port is active.

Type of the underlying PCI device.

Underlying used device is RoCE Express.
Underlying used device is RoCE Express 2.
Underlying used device is ISM.

Show whether the device is critical i.e. without failover possibility(SMC-R) or whether the device is in use.(SMC-D)

For SMC-R, there is at least one link group running on the device with state "SINGLE" or locally "ASYMMETRIC" which means one or more link groups without a failover device in case of a link failure. In case of SMC-D, there is at least one link group running on the ISM device.
For SMC-R, there is no link group running on the device with state "SINGLE" or locally "ASYMMETRIC" which means the link group(s) have a fallback device in case of a failure. In case of SMC-D, there is no link group running on the ISM device.

Function ID of the PCI device.

ID of the PCI device.

Physical channel ID of the PCI device.

Number of links (SMC-R)/link groups (SMC-D) on the device.

PNET ID of the device. Leading asterisk "*" means PNET ID is set by the user. (e.g "*PNET-ID")

1. Show all SMC-D devices:
# smcd device show all

2. Show all SMC-R devices:
# smcr devices show all

3. Show all SMC-R devices with RoCE (InfiniBand) device name "mlx4_0":
# smcr device show ibdev mlx4_0

4. Show all SMC-R devices with network device name "eth0":
# smcr device show netdev eth0

smcd(8), smcr(8)

June 2020 smc-tools