[ovirt-users] oVirt 4.0 and multipath.conf for HPE 3PAR. What do you advise?

[aleksey.maksimov at it-kb.ru]

Hello, oVirt guru's !

I installed oVirt 4.0 on several servers HP ProLiant DL360 G5 with QLogic/Emulex 4G dual-port HBAs.
These servers have multipath connection to the storage system HP 3PAR 7200.

Before installing oVirt to servers I set up the configuration file /etc/multipath.conf according to the vendor recommendations from document "HPE 3PAR Red Hat Enterprise Linux and Oracle Linux Implementation Guide (emr_na-c04448818-9.pdf)"
https://blog.it-kb.ru/2016/06/12/configuring-device-mapper-multipathing-dm-multipat-mpio-in-centos-linux-7-2-with-emulex-and-qlogic-fc-hba-connecting-over-san-storage-hp-3par-7200-3par-os-3-2-2/

Before installing oVirt my multipath.conf was the:
 
---> start of /etc/multipath.conf <-----

defaults {
        polling_interval 10
        user_friendly_names no
        find_multipaths yes
}
blacklist {
        devnode "^cciss\/c[0-9]d[0-9]*"
}
multipaths {
       multipath {
               wwid   360002ac000000000000000160000cec9
               alias  3par-vv2
       }
       multipath {
               wwid   360002ac000000000000000170000cec9
               alias  3par-vv1
      }
}
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"
                prio alua
                failback immediate
                rr_weight uniform
                no_path_retry 18
                rr_min_io_rq 1
                detect_prio yes
        }
}
---> end of /etc/multipath.conf <-----

But after installing oVirt file multipath.conf has changed to:

---> start of /etc/multipath.conf <-----
defaults {
    polling_interval            5
    no_path_retry               fail
    user_friendly_names         no
    flush_on_last_del           yes
    fast_io_fail_tmo            5
    dev_loss_tmo                30
    max_fds                     4096
}
devices {
    device {
        all_devs                yes
        no_path_retry           fail
    }
}
---> end of /etc/multipath.conf <-----

Now I'm not sure that this configuration is optimal. What do you advise?