Hot Replacement Procedure For Iscsi (Nic); Figure 4.3 Example Of Single Nic 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
21. Execute the higher-level application processing required after NIC replacement.
Perform the necessary post processing (such as starting an application or restoring changed settings) for
the operations performed for the higher-level applications in step 3.

4.6.5 Hot replacement procedure for iSCSI (NIC)

When performing hot replacement of NICs used for iSCSI connection, use the following procedures.
- 4.6.1 Overview of common replacement procedures for PCI Express cards
- 4.6.2 PCI Express card replacement procedure in detail
- 4.6.4 Network card replacement procedure
A supplementary explanation of the procedure follows.
Prerequisites for iSCSI (NIC) hot replacement
- The prerequisites for iSCSI (NIC) hot replacement are as follows.
- The storage connection is established on a multipath using DM-MP (Device-Mapper Multipath) or
ETERNUS multidriver (EMPD).
- To replace more than one iSCSI card, one card at a time will be replaced.
- A single NIC is configured as one interface.
Work to be performed before iSCSI (NIC) replacement
For iSCSI (NIC) hot replacement, be sure to follow the procedure below when performing Step 3 of the
replacement procedure' in
1. Perform the work for suppressing access to the iSCSI connection interface.
a. Confirm the state of multiple path by DM-MP (*1) or EMPD (*2).
b. Use the iscsiadm command to log out from the path (iqn) through which the iSCSI card to be replaced
is routed, and disconnect the session.
Example which confirms the state of session before disconnecting:
# /sbin/iscsiadm -m session
tcp: [1] 192.168.1.64:3260,1 iqn.2000-
09.com.fujitsu:storage-system.eternus-
dx400:00001049.cm0ca0p0
tcp: [2] 192.168.2.66:3260,3 iqn.2000-
09.com.fujitsu:storage-system.eternus-
dx400:00001049.cm1ca0p0
Example which logout path going through a NIC to be replaced:
# /sbin/iscsiadm -m node -T iqn.2000-09.com.fujitsu:storage-
system.eternus-dx400:00001049.cm1ca0p0 -p 192.168.2.66:3260
–logout
c. Use the iscsiadm command to confirm that the target session has been disconnected.
Example which confirms the state of session after disconnecting

FIGURE 4.3 Example of single NIC interface

'4.6.4 Network card replacement
102
procedure'
'NIC
C122-E175-02EN