SM-BC destination cluster LUNs not connected to Linux host
Applies to
- ONTAP 9
- SnapMirror Business Continuity (SM-BC)
- Linux Unified Host Utilities (LUHU)
- iSCSI
- CentOS 7
Issue
- SM-BC destination LUNs are mapped to the correct igroup in ONTAP.
multipath -llshows 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 -ponly 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, orvserver iscsi session show, has no iSCSI sessions from the host on the destination cluster.