升级后， FC 延迟增加了 10 倍

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适用场景

ONTAP

问题描述

在升级过程中重新启动节点后，光纤通道（ FC ）主机在使用 Brocade FC 交换机时的 IO 性能极低。
已生成 SRAM 转储 AutoSupport

Brocade ：

porterrshow
- 显示错误计数器增加
nsshow
- 显示端口上未注册任何设备
sfpshow
- Rx 电源非常低

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.