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Chapter 2 Multipath Driver System Setup
2.1 Accessing the Storage System Disks
2.1.1.1
Creating by-id Names
Details of how to create by-id names are provided in the "FUJITSU Storage ETERNUS Multipath Driver V2 (for
Linux) Installation Information" found under "Downloads" at the following URL:
http://www.fujitsu.com/global/products/computing/storage/software/eternus-mpd/
2.1.1.2
Reference by-id Names
Details of how to check the correspondence between the created by-id names and the usual /dev/sda type
names are provided in the "FUJITSU Storage ETERNUS Multipath Driver V2 (for Linux) Installation Information"
found under "Downloads" at the following URL:
http://www.fujitsu.com/global/products/computing/storage/software/eternus-mpd/
2.1.1.3
Notes
Notes of how to use by-id names are provided in the "FUJITSU Storage ETERNUS Multipath Driver V2 (for Linux)
Installation Information" found under "Downloads" at the following URL:
http://www.fujitsu.com/global/products/computing/storage/software/eternus-mpd/
2.1.2
When Using FUJITSU Software PRIMECLUSTER Global Disk Services (Storage
System Recognition Order Setting)
When the following configurations are used, the relation of the device name and the LU may change after
every reboot:
•
When multiple storage systems are connected to a single server via a Fibre Channel switch
•
When multiple connections are created between a single server and a storage system with multiple LUN
mappings, affinity groups, and zones via a Fibre Channel switch
When the relation of the device name (such as /dev/sda) and the LU is changed, FUJITSU Software
PRIMECLUSTER Global Disk Services determines that an unanticipated error occurs and suspends access from
the server to the LU.
Using the Multipath Driver recognition order setting function can prevent device names changing as
described in the above examples.
FUJITSU Storage ETERNUS Multipath Driver V2 User's Guide for Linux
Copyright 2014 FUJITSU LIMITED
35
P2U3-0031-15ENZ0
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