Fujitsu PRIMEQUEST 2000 Series Administration Manual page 285

CHAPTER 7 PCI Card Hot Maintenance in SUSE Linux Enterprise Server 12
7.6 IOU hot remove
# /sbin/ifdown ethX.Y
# /sbin/vconfig rem ethX.Y
For the SLAVE interface of a bonding device:
If the bonding device is operating in mode 1, use the following steps to exclude SLAVE interface to be
replaced from the bonding configuration. In any other mode, removing it immediately should not cause
any problems.
Confirm that the SLAVE interface to be replaced is the interface currently being used for communication.
First, confirm the interface currently being used for communication by executing the following command.
# cat /sys/class/net/bondY/bonding/active_slave
If the displayed interface matches the SLAVE interface being replaced, execute the following command to
switch the current communication interface to another SLAVE interface.
# /sbin/ifenslave -c bondY ethZ
(ethZ: Interface that composes bondY and does not perform hot replacement)
Finally, remove the SLAVE interface being replaced, from the bonding configuration. Immediately after
being removed, the interface is automatically no longer used.
# /sbin/ifenslave -d bondY ethX
6. Remove the interface configuration file..
Delete the configuration files of all the interfaces confirmed in step 2, by executing the following command.
# rm /etc/sysconfig/network/ifcfg-ethX
iSCSI (NIC) on the IOU
If replace iSCSI (NIC) on the IOU, you have to take not only the same steps of 'NIC on the IOU (including
Onboard NIC)' but also takes steps below in step 3 of that.
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
# /sbin/iscsiadm -m session
tcp: [1] 192.168.1.64:3260,1 iqn.2000-
09.com.fujitsu:storage-system.eternus-
dx400:00001049.cm0ca0p0
d. You can confirm the disconnection of sessions on multipath products using DM-MP or ETERNUS
multidriver.
*1: Write down the DM-MP display contents at the session disconnection.
Example of DM-MP display before disconnecting path
# /sbin/multipath -ll
mpath1 (36000b5d0006a0000006a104900000000) dm-0
FUJITSU,ETERNUS_DX400
[size=50G][features=0][hwhandler=0][rw]
¥_ round-robin 0 [prio=2][active]
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CA92344-0537-08