Chapter 6 Changing the Multipath Configuration (iSCSI Connection for RHEL5, SLES9, or SLES10)
6.6 Path Reduction (Cable Reduction)
FUJITSU Storage ETERNUS Multipath Driver V2 User’s Guide for Linux
Copyright 2014 FUJITSU LIMITED
P2U3-0031-15ENZ0
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6.6.2
Reduction with Server Rebooting
Use the following procedure to remove cables while the server is shut down.
Procedure
1
Shut down the server.
2
Detach the hardware.
Disconnect the target cable from the server (remove the connected cable, etc.).
3
Restart the server.
Power on the server and boot it up.
4
Use the "iompadm info" command to check that the removed cable is displayed as "fail".
[Example]
5
Delete the removed cable from the Multipath Driver target list using the "mpdconfig -d"
command.
[Example]
6
Use the "iompadm info" command to check the result.
[Example]
7
Reset the Max Throttle value if necessary.
When the number of paths connected to a given CA port in the storage system is reduced due to the
path removal, execute the "mpdconfig -m" command to set the Max Throttle value correctly.
Refer to the software information (/opt/FJSVmpd/manual/english/readme.pdf) for the Max Throttle
value computation method.
8
Set the iSCSI service and delete the iSCSI target information of the removed path.
End of procedure
# /opt/FJSVmpd/bin/iompadm info
# /opt/FJSVmpd/bin/mpdconfig -d
# /opt/FJSVmpd/bin/iompadm info
