Using multipath on Intel, Multi-flex requires the following to be added to the /etc/multipath-enabled.conf file (below the “devices {“:

device

Unknown macro: {
vendor "Intel"
product "Multi-Flex"
path_grouping_policy "group_by_prio"
getuid_callout "/lib/udev/scsi_id -g -u /dev/%n"
prio_callout "/sbin/mpath_prio_alua /dev/%n"
path_checker tur
path_selector "round-robin 0"
failback immediate
rr_weight uniform
rr_min_io 100
no_path_retry queue
features "1 queue_if_no_path"
}

The above was never included in the multipath configuration file. Credit goes to the following Linux web site –

http://www.linuxquestions.org/questions/blog/bittner-195120/multipath-on-debian-lenny-and-intel-modular-server-mfsys25-3072/

Regards,
James Cannon