Linux multipath with EMC CLARiiON

Все как обычно… Есть несколько LUNов, HBA-адаптер, хранилово предположительно EMC Clariion VNX5700, RHEL6. Сразу все красиво не завелось, но это не так страшно…
Важный файлик:
/usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.defaults

multipath.conf:

defaults {
find_multipaths yes
user_friendly_names yes
}

blacklist {
wwid “WWID”
devnode “^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*”
devnode “^hd[a-z]”
devnode “^cciss!c[0-9]d[0-9]*”
}

devices {
# Configurazione specifica EMC CLARiiON
device {
vendor “DGC”
product “*”
product_blacklist “LUNZ”
getuid_callout “/lib/udev/scsi_id –whitelisted –device=/dev/%n”
features “1 queue_if_no_path”
hardware_handler “1 alua”
path_selector “round-robin 0”
path_grouping_policy group_by_prio
failback immediate
rr_weight uniform
no_path_retry 60
rr_min_io 1000
prio alua
}
}

chkconfig multipathd on
service multipathd start
multipath -ll
Полезные команды:
mpathconf
multipath -F

Ссылки:
http://www.nxnt.org/2010/08/multipath-linux-and-emc-clariion/
http://www.sourceware.org/lvm2/wiki/MultipathUsageGuide
https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/DM_Multipath/
https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide