MultiPath para una cabina HP MSA

Si queremos configurar una cabina SAN HP MSA con Device Mapper Multipath sobre un sistema Debian, Ubuntu o Gentoo, podremos usar el siguiente fichero de configuración /etc/multipath.conf

blacklist {
   devnode "^cciss!c[0-9]d[0-9]*(p[0-9]*)?"
}
defaults {
   user_friendly_names yes
}
devices {
   device {
      vendor  "HP*"
      product  "MSA2312fc"
      getuid_callout "/lib/udev/scsi_id -g -u  -s /block/%n"
      hardware_handler "0"
      path_selector "round-robin 0"
      prio  alua
      #path_checker alua
      #prio_callout     "/sbin/mpath_prio_alua /dev/%n"
      path_grouping_policy group_by_prio
      failback  immediate
      rr_weight  uniform
      no_path_retry 18
      rr_min_io  100
      path_checker tur
   }
}
multipaths {
   multipath {
      wwid                   3600c0ff000da437942ece24c01000000 
      alias                  LUN1_MSA
   }
   multipath {
      wwid                   3600c0ff000da44502b1aec4c01000000
      alias                  LUN2_MSA
   }
}