Chapter 10 Setting Up And Checking The Device-Mapper Multipath; For Rhel; Modifying "/Etc/Multipath.conf - Fujitsu ETERNUS2000 Connection Manual

Chapter 10 Setting Up and Checking
Set up and check the device-mapper multipath.
10.1

For RHEL

10.1.1

Modifying "/etc/multipath.conf"

Edit the "/etc/multipath.conf" device-mapper multipath configuration file as follows:
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P3AM-4212-02ENZ0 ETERNUS2000 Disk storage systems Server Connection Guide (SAS) for Linux
the device-mapper multipath
Procedure
Comment out the following three lines in "/etc/multipath.conf".
# blacklist{
# devnode "*"
# }
The blacklist section is used to specify any internal disks or other devices that are to be
excluded from the multipath configuration. If required, refer to the Red Hat web-site for
details.
Confirm that the following description is present.
## Use user friendly names, instead of using WWIDs as names.
defaults{
user_friendly_names yes
}
Add the following lines at the end of the file.
devices{
device{
vendor
product
prio_callout
path_grouping_policy
path_selector
failback
no_path_retry
}
}
"FUJITSU"
"E2000"
"/sbin/mpath_prio_alua %d"
group_by_prio
"round-robin 0"
immediate
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End of procedure
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