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Do I have to change the RHEL /etc/multipath.conf when I upgrade my InForm OS from 3.1.2 to 3.1.3?

 
StuartA46
Frequent Advisor

Do I have to change the RHEL /etc/multipath.conf when I upgrade my InForm OS from 3.1.2 to 3.1.3?

We have set up a bunch of RHEL 6.X servers on our V400 at InForm OS 3.1.2 with the "old" Persona 1. When we do that, we use the "old" multipath.conf:

devices {
device {
vendor "3PARdata"
product "VV"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
no_path_retry "12"
features "0"
hardware_handler "0"
path_selector "round-robin 0"
path_grouping_policy multibus
rr_weight uniform
rr_min_io 100
path_checker tur
failback immediate
prio const
}

When we upgrade to InForm OS 3.1.3, should we change the servers' /etc/multipath.conf to the "new" format:

devices {
device {
vendor "3PARdata"
product "VV"
path_grouping_policy group_by_prio
path_selector "round-robin 0"
path_checker tur
features "0"
hardware_handler "1 alua"
failback immediate
rr_weight uniform
no_path_retry 18
rr_min_io_rq 1
detect_prio yes
# fast_io_fail_tmo 10
# dev_loss_tmo 14
}
}

Do we have to change? What if we don't change the Persona from "1" to "2"?