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Chapter 6 Maintenance > 6.3 NIC maintenance (for RHEL6) > 6.3.2 Active maintenance of NIC
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6.3.2 Active maintenance of NIC

This section describes the PCI Hot Plug for redundant NIC by Redundant line control function.

For the outline and the procedure for setting up PCI Hot Plug provided by PRIMEQUEST, see the following manuals:

Note

Make sure to check the procedure for the PCI Hot Plug in the latest manual before performing active maintenance for NIC.

The following table shows what active operation is enabled through PCI Hot Plug.

Table 6.2 Active maintenance with PCI Hot Plug in redundant line control function

Mode

System configuration

PCI Hot Plug

Add

Remove

Swap

Fast switching mode

Single system

A

A

A

Cluster system

B (*1)

B (*2)

A

NIC switching mode

Single system

A

A

A

Cluster system

B (*1)

B (*2)

A

Virtual NIC mode

Single system

A

A

A

Cluster system

B (*1)

B (*2)

A

GS linkage mode

Single system

N

N

A

Cluster system

N

N

A

[Meaning of the symbols]
A: Active maintenance is enabled when GLS is running
B: Active maintenance is enabled when GLS is stopped
N: Not supported

*1) Addition procedure for PCI Hot Plug in a cluster system

  1. Add NIC.

    For details, see the following manuals.

    • PRIMEQUEST 2000 Series

      PRIMEQUEST 2000 Series Administration Manual

  2. Add the configuration for virtual interfaces.

    For details, see "5.2.1 Adding configuration".

*2) Removal procedure for PCI Hot Plug in a cluster system

  1. Delete virtual interfaces.

    For details, see "5.2.3 Deleting configuration".

  2. Delete NIC.

    For details, see the following manuals.

    • PRIMEQUEST 2000 Series

      PRIMEQUEST 2000 Series Administration Manual

6.3.2.1 Addition procedure

This section describes the procedure for adding NICs and creating a virtual interface to make the added NICs redundant.

Figure 6.1 Addition of a virtual interface for making the added NICs (ethX,ethY) redundant

  1. Adding NIC

    Add NIC. For procedures, see the following manual:

    • PRIMEQUEST 2000 Series

      "Hot Maintenance in Red Hat Enterprise Linux 6" in "PRIMEQUEST 2000 Series Administration Manual"

  2. Creating virtual interface

    Refer to "3.3 Additional system setup" and create a virtual interface to duplicate the added NIC.

6.3.2.2 Removal procedure

This section describes the procedure for removing NICs whose virtual interface makes them redundant.

Figure 6.2 Removing NICs whose virtual interface makes them redundant (ethX, ethY)

  1. Preparation for removing NIC

    See "3.5 Deleting configuration information" to remove the virtual interface that uses the NIC to be removed.

  2. Removing NIC

    Remove NIC. For the procedures, see the following manual:

    • PRIMEQUEST 2000 Series

      "Hot Maintenance in Red Hat Enterprise Linux 6" in "PRIMEQUEST 2000 Series Administration Manual"

6.3.2.3 Swapping procedure

This section describes the procedure for swapping a NIC whose virtual interface makes it redundant.

Figure 6.3 Swapping a NIC whose virtual interface makes it redundant (ethX)

Perform the operation in the following:

Detailed procedures for each redundant line switching mode are shown below.

Replace the virtual interface name (shaX) and physical interface name (ethX, ethY) described in this procedure with the interface suitable for your environment.

For Fast switching mode

  1. Preparations for NIC swapping

    1-1. From the virtual interface definition, temporarily delete the definition information about the NIC to be swapped (The interface name of the target NIC is ethX).

    # /opt/FJSVhanet/usr/sbin/hanetnic delete -n shaX -i ethX

    1-2. Enter the dsphanet command to confirm that the device status of the target NIC (interface name: ethX) is "CUT".

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    t   OFF  ethX(CUT),ethY(ON)

  2. NIC swapping

    Perform NIC swap. For details, see the manual below.

    • PRIMEQUEST 2000 Series

      "Hot Maintenance in Red Hat Enterprise Linux 6" in "PRIMEQUEST 2000 Series Administration Manual"

  3. Post-swap processing of NIC

    3-1. Restore the NIC (interface name: ethX) that was temporarily deleted in step 1.

    # /opt/FJSVhanet/usr/sbin/hanetnic add -n shaX -i ethX

    3-2. Enter the dsphanet command to confirm that the device status of the swapped NIC (interface name: ethX) is "ON".

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    t   OFF  ethY(ON),ethX(ON)

For NIC switching mode

  1. Preparations for NIC swapping

    1-1. Stop HUB monitoring.

    # /opt/FJSVhanet/usr/sbin/hanetpoll off

    1-2. Stop standby patrol monitoring. If the standby patrol function is not used, skip this step.

    # /opt/FJSVhanet/usr/sbin/stpptl -n shaY

    1-3. Enter the dsphanet command to check the status of the NIC (Interface name: ethX) to be swapped. The NIC must be in a different state from that of an active NIC (the NIC must be in the "OFF" or "STOP" state). If the NIC is active, follow step 1-4 to switch its state to standby.

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    d   OFF   ethX(ON),ethY(OFF)

    1-4. If the NIC is an active NIC, switch its state to standby. After the switch, enter the dsphanet command to confirm that the NIC is a standby NIC(OFF).

    # /opt/FJSVhanet/usr/sbin/hanetnic change -n shaX
    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    d   OFF   ethX(OFF),ethY(ON)

    1-5. Stop interface status monitoring.

    # /bin/touch /var/opt/FJSVhanet/tmp/disable_watchif

  2. NIC swapping

    Perform NIC swapping. For details, see the manual below.

    • PRIMEQUEST 2000 Series

      "Hot Maintenance in Red Hat Enterprise Linux 6" in "PRIMEQUEST 2000 Series Administration Manual"

  3. Post-swap processing of NIC

    3-1. Set the state of the swapped NIC to that of a standby NIC of GLS.

    The procedure varies depending on whether or not the IP address set to the virtual interface is only an IPv6 address:

    • If an IPv4 address is set to the virtual interface

      Confirm that an IPv4 address is not assigned and the "UP" and "NOARP" flags are set.

      # /sbin/ifconfig ethX 0 -arp up
# /sbin/ifconfig ethX
ethX      Link encap:Ethernet  HWaddr ZZ:ZZ:ZZ:ZZ:ZZ:ZZ
          inet6 addr: fe80::XXXXXXXXXXXXXXXX/64 Scope:Link
          UP BROADCAST NOARP MULTICAST  MTU:1500  Metric:1

    • If an only IPv6 address is set the virtual interface

      Confirm that the "UP" flag is set.

      # /sbin/ifconfig ethX up
# /sbin/ifconfig ethX
ethX      Link encap:Ethernet  HWaddr ZZ:ZZ:ZZ:ZZ:ZZ:ZZ
          inet6 addr: fe80::XXXXXXXXXXXXXXXX/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1

    Information

    If an only IPv6 address is set, when executing the dsphanet command right after executing the above commands, the available state "ON" is displayed for the both devices. This is a temporary state and it does not affect the system because the state will become a proper state by performing the following steps.

    3-2. If necessary, fail-back the NIC.

    # /opt/FJSVhanet/usr/sbin/hanetnic change -n shaX

    3-3. Start standby patrol monitoring. If the standby patrol function is not used, skip this step.

    # /opt/FJSVhanet/usr/sbin/strptl -n shaY

    3-4. Restart HUB monitoring.

    # /opt/FJSVhanet/usr/sbin/hanetpoll on

    3-5. Restart interface status monitoring.

    # /bin/rm /var/opt/FJSVhanet/tmp/disable_watchif

For Virtual NIC mode

  1. Preparations for NIC swapping

    1-1. Stop network monitoring.

    # /opt/FJSVhanet/usr/sbin/hanetpathmon off

    1-2. From the virtual interface definition, temporarily delete the definition information about the NIC to be swapped (The interface name of the target NIC is ethX).

    # /opt/FJSVhanet/usr/sbin/hanetnic delete -n shaX -i ethX

    1-3. Enter the dsphanet command to confirm that the device status of the target NIC (interface name: ethX) is "CUT".

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    v   OFF  ethX(CUT),ethY(ON)

  2. NIC swapping

    Perform NIC swapping. For details, see the manual below.

    • PRIMEQUEST 2000 Series

      "Hot Maintenance in Red Hat Enterprise Linux 6" in "PRIMEQUEST 2000 Series Administration Manual"

  3. Post-swap processing of NIC

    3-1. Restore the NIC (interface name: ethX) that was temporarily deleted in step 1.

    # /opt/FJSVhanet/usr/sbin/hanetnic add -n shaX -i ethX

    3-2. Enter the dsphanet command to confirm that the device status of the swapped NIC (interface name: ethX) is "OFF".

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    v   OFF  ethX(OFF),ethY(ON)

    3-3. If necessary, fail-back the NIC.

    # /opt/FJSVhanet/usr/sbin/hanetnic change -n shaX -i ethX

    3-4. Restart network monitoring.

    # /opt/FJSVhanet/usr/sbin/hanetpathmon on

For GS linkage mode

  1. Preparations for NIC swapping

    1-1. From the virtual interface definition, temporarily delete the definition information about the NIC to be swapped (The interface name of the target NIC is ethX).

    # /opt/FJSVhanet/usr/sbin/hanetnic delete -n shaX -i ethX

    1-2. Enter the dsphanet command to confirm that the device status of the target NIC (interface name: ethX) is "CUT".

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    c   OFF  ethX(CUT),ethY(ON)

  2. NIC swapping

    Perform NIC swapping. For details, see the manual below.

    • PRIMEQUEST 2000 Series

      "Hot Maintenance in Red Hat Enterprise Linux 6" in "PRIMEQUEST 2000 Series Administration Manual"

  3. Post-swap processing of NIC

    3-1. Restore the NIC (interface name: ethX) that was temporarily deleted in step 1.

    # /opt/FJSVhanet/usr/sbin/hanetnic add -n shaX -i ethX

    3-2. Enter the dsphanet command to confirm that the device status of the swapped NIC (interface name: ethX) is "ON".

    # /opt/FJSVhanet/usr/sbin/dsphanet
[IPv4,Patrol / Virtual NIC]
 Name       Status   Mode CL  Device
+----------+--------+----+----+------------------------------------------------+
 shaX       Active    c   OFF  ethY(ON),ethX(ON)
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