ISCSI paths missing on Linux host due to lack of reporting nodes
Applies to
- ONTAP
- Linux Host
- ISCSI SAN
Issue
- Few LUNs showing 2paths instead of 4 on linux host.
- The variation in path counts for the same host is seen below:
Expected: 4 paths
Observed: 2 paths
2 path
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:0:xx sdao 66:128 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
`- 9:0:0:xx sdcn 69:176 active ready running
4 path
|-+- policy='service-time 0' prio=50 status=active
| `- 7:0:0:xx sdcw 70:64 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
|- 4:0:0:xx sdy 65:128 active ready running
|- 6:0:0:xx sdbf 67:144 active ready running
`- 5:0:0:xx sdcl 69:144 active ready running
2 path
|-+- policy='service-time 0' prio=50 status=active
| `- 3:0:0:xx sdaj 66:48 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
`- 7:0:0:xx sdl 8:176 active ready running
4 path
|-+- policy='service-time 0' prio=50 status=active
| `- 6:0:0:x sdg 8:96 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
|- 5:0:0:x sdb 8:16 active ready running
|- 2:0:0:x sdak 66:64 active ready running
`- 9:0:0:x sdaz 67:48 active ready running
- Reporting nodes on the affected LUNs shows as two reporting nodes instead of four nodes
lun mapping show -vserver [vserver name] -path [/vol/volname/lunname] -fields reporting-nodescommand can be run to view the reporting nodes.
Affected Luns:
Vserver Name: SESKSVM26
LUN Path: /vol/vol_1/lun_1
[...]
LUN Node: SESK00000000-08
Reporting Nodes: SESK00000000-07, SESK00000000-08
Non-affected Luns:
Vserver Name: SESKSVM26
LUN Path: /vol/vol_2/lun_2
[...]
LUN Node: SESK00000000-03
Reporting Nodes: SESK00000000-03, SESK00000000-04, SESK00000000-05,
SESK00000000-06