FUJITSU Storage ETERNUS Multipath Driver V2 User’s Guide for Linux
Copyright 2014 FUJITSU LIMITED
P2U3-0031-15ENZ0
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Chapter 5
Changing the Multipath Configuration
(SAS Connection for RHEL-AS4, RHEL-ES4, RHEL5,
or SLES10)
The procedure to change the multipath configuration varies depending on the type of OS that is used.
In this chapter, the multipath configuration of the following OSs is described:
•
Red Hat Enterprise Linux AS (4.6 or later)
•
Red Hat Enterprise Linux ES (4.6 or later)
•
Red Hat Enterprise Linux 5 (Update 3 or later)
•
SUSE Linux Enterprise Server 10 (Service Pack 3 or later)
When using the following OSs, refer to
"Chapter 8 Changing the Multipath Configuration (SAS Connection for
RHEL6, RHEL7, or SLES11)" (page 94)
•
Red Hat Enterprise Linux 6
•
Red Hat Enterprise Linux 7
•
SUSE Linux Enterprise Server 11 (Service Pack 1 or later)
The multipath configuration can be changed using the "mpdconfig" command. The "mpdconfig" command is
installed in the /opt/FJSVmpd/bin directory. Only a root-level user may execute the "mpdconfig" command.
This chapter describes how to change multipath configuration for SAS connection.
•
When by-id names are not used, changing the multipath configuration may change the device names.
•
Before starting an addition process, use the "iompadm info" command to check that the existing devices
are in normal status.
•
Before starting a reduction process, check that the device not to be reduced is in normal status.
