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SM-BC destination cluster LUNs not connected to Linux host

Last Updated:

Applies to

  • ONTAP 9
  • SnapMirror Business Continuity (SM-BC)
  • Linux Unified Host Utilities (LUHU)
  • iSCSI
  • CentOS 7


  • SM-BC destination LUNs are mapped to the correct igroup in ONTAP.
  • multipath -ll shows half of the expected paths on the host, in this case 4 of 8:

3600a0980774f6a34495d544d47387373 dm-2 NETAPP  ,LUN C-Mode
size=10G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| |- 33:0:0:10 sdb 8:16 active ready running
| `- 39:0:0:10 sdd 8:48 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  |- 38:0:0:10 sdc 8:32 active ready running
  `- 40:0:0:10 sde 8:64 active ready running

  • LUHU's sanlun lun show -p only shows paths to LIFs on source cluster:

                    ONTAP Path: svm_linux:/vol/centos1/centos1_1
                           LUN: 10
                      LUN Size: 10g
                       Product: cDOT
                   Host Device: 3600a0980774f6a34495d544d47387373
              Multipath Policy: service-time 0
            Multipath Provider: Native
--------- ---------- ------- ------------ ----------------------------------------------
host      vserver
path      path       /dev/   host         vserver
state     type       node    adapter      LIF
--------- ---------- ------- ------------ ----------------------------------------------
up        primary    sdb     host33       lif_svm_linux_1
up        primary    sdd     host39       lif_svm_linux_2
up        secondary  sdc     host38       lif_svm_linux_4
up        secondary  sde     host40       lif_svm_linux_3

  • ISCSI-SESSION-BRIEF.XML, or vserver iscsi session show, has no iSCSI sessions from the host on the destination cluster.

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