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