Chapter 7 Changing the Multipath Configuration (FC/FCoE Connection for RHEL6, RHEL7, or SLES11)
7.7 Path Addition and Reduction (HBA Addition and Reduction)
FUJITSU Storage ETERNUS Multipath Driver V2 User’s Guide for Linux
Copyright 2014 FUJITSU LIMITED
P2U3-0031-15ENZ0
93
7.7
Path Addition and Reduction (HBA Addition and Reduction)
This section describes how to increase paths by adding HBAs, and decrease paths by removing HBAs.
Adding and reducing HBAs without server rebooting (PCI Hot Plug) is only supported for PRIMEQUEST servers.
For details on this procedure, refer to the PRIMEQUEST manual.
To shut down the server after the addition of paths by adding HBAs, change the status of the new paths to
"stop" with the "iompadm change" command.
Adding and reducing HBAs with server rebooting is the same procedure as adding and reducing cables with
server rebooting. Add or reduce HBAs at the same time that cables are being added or reduced.
When a HBA is added, execute the "mpdconfig -m" command to set the Max Throttle values for the new path.
Refer to the software information (/opt/FJSVmpd/manual/
english
/readme.pdf) for the Max Throttle value
computation method.
