Skip to main content
NetApp Knowledge Base

E-Series LUNs inaccessible due to fibre channel link failure between servers and storage

  1. Last updated
  2. Save as PDF
Views:
30
Visibility:
Public
Votes:
0
Category:
e-series-systems
Specialty:
esg
Last Updated:

Applies to

  • NetApp E-Series
  • Brocade Switches

Issue

  • Multiple windows servers failed to boot due to the boot LUN being inaccessible on the NetApp E-Series storage system.
  • E-series  fcDump output under  STATE-CAPTURE-DATA indicates all the associated FC port link status are down on both controllers.

2806-A           Our  Num  ::...Exchange Counts...:: Num  ..Link Up..
Chip   LinkStat  Port Port ::                     :: Link  Bad  Bad
                  ID  Logi ::Open    Total  Errors:: Down  Char Frame
2-Src Down---  27100    1 ::  0   12004199      2::    1     0     0
3-Src Down---  27200    1 ::  0   12094649      2::    1     0     0
4-Src Down---  27200    1 ::  0   11864969      5::    1     0     0
5-Src Down---  27100    1 ::  0   11964081      1::    1     0     0
6-Src Down---  27300    1 ::  0   11780361     10::    1     0     0
7-Src Down---  27300    1 ::  0   11887600      7::    1     0     0

2806-B           Our  Num  ::...Exchange Counts...:: Num  ..Link Up..
Chip   LinkStat  Port Port ::                     :: Link  Bad  Bad
                  ID  Logi ::Open    Total  Errors:: Down  Char Frame
2-Src Down---  27400    1 ::  0   14502748      5::    1     0     0
3-Src Down---  27400    1 ::  0   14441769      3::    1     0     0
4-Src Down---  27500    1 ::  0   14484567      1::    1     0     0
5-Src Down---  27500    1 ::  0   14345188      3::    1     0     0
6-Src Down---  27600    1 ::  0   14312190      0::    1     0     0
7-Src Down---  27600    1 ::  0   14276360      2::    1     0     0

  • E-series Major Event Log reports multiple fibre channel link down events:
     

B:8/14/25, 2:23:20 PM (14:23:20) 40372 1017 Fibre channel link down - Host-side: controller in bay B, port 1
B:8/14/25, 2:23:19 PM (14:23:19) 40371 1017 Fibre channel link down - Host-side: controller in bay B, port 2
B:8/14/25, 2:22:42 PM (14:22:42) 40370 1017 Fibre channel link down - Host-side: controller in bay B, port 3
B:8/14/25, 2:22:40 PM (14:22:40) 40369 1017 Fibre channel link down - Host-side: controller in bay B, port 4
B:8/14/25, 2:22:38 PM (14:22:38) 40368 1017 Fibre channel link down - Host-side: controller in bay B, port 5
B:8/14/25, 2:22:35 PM (14:22:35) 40367 1017 Fibre channel link down - Host-side: controller in bay B, port 6
A:8/14/25, 2:22:22 PM (14:22:22) 40366 1017 Fibre channel link down - Host-side: controller in bay A, port 3
A:8/14/25, 2:22:17 PM (14:22:17) 40365 1017 Fibre channel link down - Host-side: controller in bay A, port 4
A:8/14/25, 2:22:14 PM (14:22:14) 40364 1017 Fibre channel link down - Host-side: controller in bay A, port 5
A:8/14/25, 2:22:12 PM (14:22:12) 40363 1017 Fibre channel link down - Host-side: controller in bay A, port 6

 

  • The status of FC ports on the switch associated with the affected servers and storage show  No_light and OFFLINE

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.