Silicon Graphics InfiniteStorage 4000 Series User Manual page 7

Chapter 4
Chapter 5
Chapter 6
Table of Contents
Device Mapper Multipath for the Linux Operating System . . . . . . . . . . . . . . . . 49
Device Mapper Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Known Limitations and Issues of the Device Mapper . . . . . . . . . . . . . . . . . . . 49
Device Mapper Operating Systems Support . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
I/O Shipping Feature for Asymmetric Logical Unit Access (ALUA) with
Linux Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Installing the Device Mapper Multi-Path for the SUSE Linux Enterprise
Server Version 11 Service Pack 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Installing the Device Mapper Multi-Path for the Red Hat Enterprise Linux
Operating System Version 6.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Verifying that the I/O Shipping Feature for ALUA Support is Installed on the
Linux OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Setting Up the multipath.conf File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Updating the Blacklist Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Updating the Devices Section of the multipath.conf File . . . . . . . . . . . . . . 54
Setting Up DM-MP for Large I/O Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Using the Device Mapper Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Trouble-
shooting the Device Mapper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Failover Drivers for the Solaris Operating System . . . . . . . . . . . . . . . . . . . . . . . 59
Solaris OS Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Prerequisites for Installing MPxIO on the Solaris OS for the First Time . . . . . 59
Prerequisites for Installing MPxIO on a Solaris OS that Previously Ran
RDAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Installing MPxIO on the Solaris 9 OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Enabling MPxIO on the Solaris 10 OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Enabling MPxIO on the Solaris 11 OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Configuring Failover Drivers for the Solaris OS . . . . . . . . . . . . . . . . . . . . . . . . 63
Frequently Asked Questions about Solaris Failover Drivers . . . . . . . . . . . . . . . 63
Installing ALUA Support for VMware Versions ESX4.1U3, ESXi5.0U1, and
Subsequent Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
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