Multipath not picking up san luns.

Solution Unverified - Updated -

Issue

  • New Luns from storage are not getting detected in DM-Multipath and the following error is seen when multipath -v2 is run
error calling out /sbin/scsi_id -g -u -s
/sbin/scsi_id: option requires an argument -- s
Unknown or bad option '?' (0x3f)

DM-Multipath configuration in /etc/multipath.conf file is seen as follows

devices {
      device {
               vendor                  "IBM"
               product                 "2145"
               path_grouping_policy    group_by_prio
                getuid_callout          "/sbin/scsi_id -g -u -s"
              prio_callout            "/sbin/mpath_prio_alua %d"
                features                "1 queue_if_no_path"
               path_checker            tur
                failback                immediate
       }

Environment

  • Red Hat Enterprise Linux 4
  • DM-Multipath

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