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Server crashed due to poor Brocade SAN switch performance

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197
Visibility:
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Category:
fabric-interconnect-and-management-switches
Specialty:
brocade
Last Updated:

Applies to

  • Brocade
  • SAN

Issue

  • SAN client logs errors about poor FCP connectivity
Sep 9 23:37:35 server kernel: [2825432.770511] sd 3:0:0:89: [sdix] killing request
Sep 9 23:37:35 server kernel: [2825432.770514] blk_update_request: I/O error, dev sdit, sector 53023504
Sep 9 23:37:35 server kernel: [2825432.770526] blk_update_request: I/O error, dev sdga, sector 4088
Sep 9 23:37:35 server kernel: [2825432.770530] blk_update_request: I/O error, dev sdgk, sector 41961240
Sep 9 23:37:35 server kernel: [2825432.770534] blk_update_request: I/O error, dev sdgk, sector 37831392
Sep 9 23:37:35 server kernel: [2825432.770666] sd 3:0:0:93: rejecting I/O to offline device
Sep 9 23:37:35 server kernel: [2825432.770668] sd 3:0:0:93: [sdjb] killing request
Sep 9 23:37:35 server kernel: [2825432.770687] sd 3:0:0:116: rejecting I/O to offline device
Sep 9 23:37:35 server kernel: [2825432.770689] sd 3:0:0:116: [sdjy] killing request
Sep 9 23:37:35 server kernel: [2825432.770719] sd 3:0:0:151: rejecting I/O to offline device
Sep 9 23:37:35 server kernel: [2825432.770721] sd 3:0:0:151: [sdlh] killing request
Sep 9 23:37:35 server kernel: [2825432.770729] sd 3:0:0:159: rejecting I/O to offline device
Sep 9 23:37:35 server kernel: [2825432.770730] sd 3:0:0:159: [sdlp] killing request
Sep 9 23:37:35 server kernel: [2825432.770737] sd 3:0:0:163: rejecting I/O to offline device
Sep 9 23:37:35 server kernel: [2825432.770738] sd 3:0:0:163: [sdlt] killing request
Sep 9 23:37:35 server kernel: [2825432.786811] sd 3:0:0:1: [sdfn] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Sep 9 23:37:35 server kernel: [2825432.786821] sd 3:0:0:1: [sdfn] CDB: Write(10) 2a 00 02 26 bb e0 00 00 10 00
Sep 9 23:37:35 server kernel: [2825432.786905] sd 3:0:0:18: [sdge] FAILED Result: hostbyte=DID_NO_CONNECT
 
  • FC Brocade switch logs performance warnings

2021/09/09-23:37:43, [MAPS-1005], 12248, SLOT 2 | FID 128, WARNING, Sify_X6_103_FAB1, slot10 port13, F-Port 10/13, Condition=ALL_F_PORTS(TX/min>95.00), Current Value:[TX, 99.02 %], Rule defALL_F_PORTSTX_95 triggered 15 times in 1 hour and last trigger time Thu Sep  9 23:37:12 2021, Dashboard Category=Fabric Performance Impact.
 

2021/09/10-16:33:43, [MAPS-1003], 12300, SLOT 2 | FID 128, WARNING, Sify_X6_103_FAB1, Jupiter5500_3_L0303R16_CL_1J, F-Port 3/22, Condition=ALL_PORTS(DEV_LATENCY_IMPACT==IO_PERF_IMPACT), Current Value:[DEV_LATENCY_IMPACT, IO_PERF_IMPACT, (16 ms Frame Delay) ], RuleName=defALL_PORTS_IO_PERF_IMPACT, Dashboard Category=Fabric Performance Impact.

 

 

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