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アップグレード後の FC のレイテンシは 10 倍に増加しました

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環境

ONTAP

問題

  • アップグレードプロセスでの Fibre Channel ( FC ;ファイバチャネル)ホストのリブート後、 Brocade FC スイッチの IO パフォーマンスが大幅に低下します。
  • SRAM ダンプ AutoSupport が生成されます  
Brocade :
porterrshow
- エラーカウンタの増加を示し
nsshow
ます。ポート
sfpshow
RX 電源にデバイスが登録されていないことを示します
 
ONTAP :
fct_tpd_thread_1: ems.engine.suppressed:debug]: Event 'fcp.io.status' suppressed 1 times in last 5 seconds.
fct_tpd_thread_1: fcp.io.status:debug]: STIO Adapter:1b, found hung cmd:0xfffff8093c5d12f0(state=10, flags=0x2, ctio_sent=2/3,RecvExAddr=0x212b, OX_ID=0x867, RX_ID=0xffff,SID=0x10800, Cmd[28], req_q_free:0)
fct_tpd_thread_1: scsitarget.fcp.dump:debug]: FCP target SRAM dump generated for adapter 1b, fct_tpd_check_hung_commands: Command termination hung. cmd:0xfffff8093c5d12f0 (state=0xa, flags=0x2,ctio_sent=2/3, RecvExAddr=0x212b, OX_ID=0x867, RX_ID=0xffff, SID=0x10800)
fct_tpd_thread_1: scsitarget.hwpfct.dump.saved:notice]: A dump for adapter 1b was stored in /etc/log/fctsli_1b/fct_fw_1b.dmp.gz.
fct_tpd_thread_1: callhome.fcp.sram.dump:error]: Call home for FCP SRAM DUMP.
fct_tpd_thread_1: scsitarget.fct.reset:notice]: Resetting Fibre Channel target adapter 1b.

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