NoPathToNSM alerts on multiple nodes and NSMs
Applies to
- ONTAP 9
- NS224 shelf
- Switch attached storage
Issue
- Recieving NoPathToNSM alerts when system is cabled in fully suppoted configuration.
- Multiple nodes are reported in the health alerts.
- NSM A and NSM B are both reported.
- All cables are in the correct ports for the platform.
- No issues seen over the physical connection to the switches.
- EMS logs will have spam the message from the node with the cshm and call out both NSMs, may throttle the heath monitoring process:
Wed Oct 22 06:24:44 -0600 [locfs1-2a: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process nchm: NoPathToNSMB_Alert[5806924427062452224].
Wed Oct 22 06:24:44 -0600 [locfs1-2a: notifyd: asup.throttle.drop:notice]: Too many AutoSupport messages in too short a time, throttling AutoSupport: HA Group Notification from locfs1-2a (Health Monitor process nchm: NoPathToNSMB_Alert[5806924427062452224]) ALERT
Wed Oct 22 06:39:44 -0600 [locfs1-2a: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process nchm: NoPathToNSMA_Alert[8217768597705498624].
Wed Oct 22 06:54:44 -0600 [locfs1-2a: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process nchm: NoPathToNSMB_Alert[6325119859186769920].
Wed Oct 22 07:39:45 -0600 [locfs1-2a: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process nchm: NoPathToNSMB_Alert[5806924427062452224].
- Alerts appear as the following:
cluster::> system health alert show
Node: node-a
Alert ID: NoPathToNSMA_Alert
Resource: Shelf 7.11
Severity: Major
Indication Time: Wed Oct 08 09:09:17 2025
Suppress: false
Acknowledge: false
Probable Cause: Controller node-a is connected only to module B of
shelf 7.11 through port e4a.
Possible Effect: You will lose access to shelf 7.11 if module B fails.
Corrective Actions: 1. Consult the guide applicable to your NVMe storage shelf to review cabling rules for your system.
2. Connect controller node-a to module A and module
B of shelf 7.11.