Figure 4.2 Single Nic Interface And Bonding Configuration Interface - Fujitsu PRIMEQUEST 2000 Series Administration Manual

CHAPTER 4 PCI Card Hot Maintenance in Red Hat Enterprise Linux 6
4.6 Hot Replacement of PCI Express Cards
The procedure describes operations where a single NIC is configured as one interface. It also describes
cases where multiple NICs are bonded together to configure one interface (bonding configuration). For
bonding multiple NIC by using PRIMECLUSTER Global Link Services (GLS), see 'PRIMECLUSTER Global
Link Service Configuration and Administration Guide Redundant Line Control Function for Linux' (J2UZ-7781).
NIC replacement procedure
This section describes the procedure for NIC replacement.
Notes
- When replacing multiple NICs, be sure to replace them one by one. If you replace multiple cards at the
same time, they may not be correctly configured.
- To perform hot replacement in a system where a bonding device is installed, design the system so that it
specifies ONBOOT=YES in all interface configuration files (the /etc/sysconfig/network-scripts/ifcfg-
eth*files and the /etc/sysconfig/network-scripts/ifcfg-bond*files), regardless of whether the NIC to be
replaced is a configuration interface of the bonding device.
An IP address does not need to be assigned to unused interfaces. This procedure is for preventing the device
name of the replacement target NIC from being changed after hot replacement. If ONBOOT=NO also exists,
the procedure described here may not work properly.
1. Confirm the slot number of the PCI Express slot that has the mounted interface.
Confirm the interface mounting location through the configuration file information and the operating
system information. First, confirm the bus address of the PCI Express slot that has the mounted interface
to be replaced.
Example: eth0 interface
# ls -l /sys/class/net/eth0/device
lrwxrwxrwx 1 root root 0 Sep 29 10:17 ¥
/sys/class/net/eth0/device
->../../../0000:00:01.2/0000:08:00.2/0000:0b:01.0
The ¥ at the end of a line indicates that there is no line feed.
Excluding the rest of the directory path, check the part corresponding to the file name in the symbolic link
destination file of the output results. In the above example, the underlined part shows the bus address.
("0000:0b:01" in the example)
Note
You will use the bus address obtained here in steps 2 and 11. Record the bus address so that you can
reference it later.
Next, check the PCI Express slot number for this bus address.
# grep -il 0000:0b:01 /sys/bus/pci/slots/*/address
/sys/bus/pci/slots/20/address
Read the output file path as shown below, and confirm the PCI Express slot number.
/sys/bus/pci/slots/<slot number>/address
Notes
If the above file path is not output, it indicates that the NIC is not mounted in a PCI Express slot (e.g.,
GbE port in the IOU).

FIGURE 4.2 Single NIC interface and bonding configuration interface

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