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NS224 shelf temporarily loses connection over one path

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Category:
disk-shelves
Specialty:
hw
Last Updated:

Applies to

  • NS224 drive shelves
  • NSM100 modules with 0131 firmware

Issue

  • NVMe shelf module (NSM) reports temporary loss of access over one path
Jan 18, 2022 22:30:48 +0100HA Group Notification (Health Monitor process nchm: NoPathToNSMB_Alert[XXXXXXXXXXXXX]) ALERT
Jan 18, 2022 22:31:17 +0100HA Group Notification (DISK REDUNDANCY FAILED) ERROR
  • The EMS logs show the connecting ports going down
Tue Jan 18 22:31:11 +0100 [node-01: kernel: netif.linkDown:info]: Ethernet e0d: Link down, check cable.
Tue Jan 18 22:31:11 +0100 [node-01: intr: netif.linkDown:info]: Ethernet e0d-30: Link down, check cable.
  • The system is showing with single-path status
Cluster::> system node run -node <node name> -command sysconfig -a
 
System Storage Configuration: Single-Path HA
  • The path becomes available a short time later without any user intervention
Tue Jan 18 22:31:55 +0100 [node-01: kernel: netif.linkUp:info]: Ethernet e0d: Link up.
Tue Jan 18 22:31:55 +0100 [node-01: intr: netif.linkUp:info]: Ethernet e0d-30: Link up.
Tue Jan 18 22:56:13 +0100 [node-01: dsa_disc: shelf.config.tompha:info]: System has transitioned to multi-path HA attached storage
 
System Storage Configuration: Multi-Path HA
  • No shelf firmware upgrade was performed during this time

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