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Chapter 4 Changing the Multipath Configuration (FC/FCoE Connection for RHEL-AS4, RHEL-ES4, RHEL5, SLES9, or SLES10)
4.1 Storage System and LU Addition
4.1.2
Addition with Server Rebooting
Use the following procedure to add extra storage systems and LUs while the server is shut down:
When adding storage systems and LUs, the device names (sd*) may be changed. Alter the settings for any
applications and OSs that access to the storage system as necessary. If by-id names are used, this problem
does not occur.
Procedure
1
When adding storage systems to a configuration in which "by-id names" are not used or "by-
id names" are used with FUJITSU Software PRIMECLUSTER Global Disk Services installed, set
the recognition order for the storage systems that have already been recognized.
If it has already been set, the recognition order does not need to be set again.
Execute the "mpdconfig -s" command to set the recognition order.
[Example]
# /opt/FJSVmpd/bin/mpdconfig -s
2
Shut down the server.
3
Attach the hardware.
Proceed as follows, depending on the addition target.
•
Storage system addition
Set up the storage system so that its LUs are accessible to the server, and then connect it to the
server. For details on the settings, refer to the storage system manual.
•
LU addition
Add a LU in the storage system. For details on adding LUs, refer to the storage system manual.
4
Restart the server.
Power on the server and boot it up.
5
Use the "iompadm info" command to check that the new hardware has been correctly
recognized and incorporated.
[Example]
# /opt/FJSVmpd/bin/iompadm info
6
When a storage system has been added, set its Max Throttle value.
Execute the "mpdconfig -m" command to set a Max Throttle value for the new storage system. Refer to
the software information (/opt/FJSVmpd/manual/english/readme.pdf) for the Max Throttle value
computation method.
[Example]
# /opt/FJSVmpd/bin/mpdconfig -m
FUJITSU Storage ETERNUS Multipath Driver V2 User's Guide for Linux
Copyright 2014 FUJITSU LIMITED
56
P2U3-0031-15ENZ0
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