第 4 章 配置核心 RDMA 子系统

流程

1. 显示设备 ib0 的硬件地址：

   # ip addr show ib0
   
   7: ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65520 qdisc fq_codel state UP group default qlen 256
       link/infiniband 80:00:0a:28:fe:80:00:00:00:00:00:00:f4:52:14:03:00:7b:e1:b1 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
       altname ibp7s0
       altname ibs2
       inet 172.31.0.181/24 brd 172.31.0.255 scope global dynamic noprefixroute ib0
          valid_lft 2899sec preferred_lft 2899sec
       inet6 fe80::f652:1403:7b:e1b1/64 scope link noprefixroute
          valid_lft forever preferred_lft forever

2. 为了将 MAC 地址为 80:00:0a:28:fe:80:00:00:00:00:00:00:f4:52:14:03:00:7b:e1:b1 的接口命名为 mlx4_ib0，创建带有以下内容的 /etc/systemd/network/70-custom-ifnames.link 文件：

   [Match]
   MACAddress=80:00:0a:28:fe:80:00:00:00:00:00:00:f4:52:14:03:00:7b:e1:b1
   
   [Link]
   Name=mlx4_ib0

   此链接文件与 MAC 地址相匹配，并将网络接口重命名为 Name 参数中设置的名称。

验证

1. 重启主机：

   # reboot

2. 验证链接文件中指定的 MAC 地址的设备是否已分配给 mlx4_ib0 ：

   # ip addr show mlx4_ib0
   
   7: mlx4_ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65520 qdisc fq_codel state UP group default qlen 256
       link/infiniband 80:00:0a:28:fe:80:00:00:00:00:00:00:f4:52:14:03:00:7b:e1:b1 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
       altname ibp7s0
       altname ibs2
       inet 172.31.0.181/24 brd 172.31.0.255 scope global dynamic noprefixroute mlx4_ib0
          valid_lft 2899sec preferred_lft 2899sec
       inet6 fe80::f652:1403:7b:e1b1/64 scope link noprefixroute
          valid_lft forever preferred_lft forever