NoPathToNSMB_Alert after adding shelves to an existing config

Last updated

Aug 10, 2023
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Views:: 912

Visibility:: Public

Votes:: 1

Category:: disk-shelves

Specialty:: HW

Last Updated:: 8/10/2023, 7:32:27 PM

Applies to

AFF A900, AFF A800, AFF A700, AFF A400, AFF A320
New NS224 shelves added and working properly, following best practices for cabling
Storage configuration change from directly-attached storage to switch-attached storage
Cisco Nexus 3232C or 9336C-FX2 switch

Issue

Health alert for both NSMA and NSMB modules

Monitor node-connect Alert ID NoPathToNSMA_Alert Alerting Resource 01234567890123456789 Subsystem SAS-connect Indication Time Sun May 08 21:34:51 2022 Perceived Severity Major AutoSupport Triggered true Probable Cause Cable_tamper Corrective Actions 1. Consult the guide applicable to your NVMe storage shelf to review cabling rules for your system. 2. Connect controller amsnapc01n01 to module A and module B of shelf 1.2.

The alerts are raised and cleared periodically:

::> event log show -event hm.alert* Time Node Severity Event ------------------- -------- -------- --------------------------- 4/22/2022 16:12:01 node_name-1 NOTICE hm.alert.cleared: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 cleared by monitor node-connect 4/22/2022 15:42:00 node_name-2 ALERT hm.alert.raised: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 raised by monitor node-connect

Repeated EMS messages:

... [node_name-1: nchmd: hm.alert.cleared:notice]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 cleared by monitor node-connect [node_name-1: nchmd: hm.alert.cleared:notice]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 cleared by monitor node-connect [node_name-1: nchmd: hm.alert.raised:alert]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 raised by monitor node-connect [node_name-1: nchmd: hm.alert.raised:alert]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 raised by monitor node-connect

... [node_name-2: nchmd: hm.alert.cleared:notice]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 cleared by monitor node-connect [node_name-2: nchmd: hm.alert.raised:alert]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 raised by monitor node-connect [node_name-2: nchmd: hm.alert.cleared:notice]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 cleared by monitor node-connect [node_name-2: nchmd: hm.alert.raised:alert]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 01234567890123456789 raised by monitor node-connect

No storage switches listed in system switch ethernet show output.