卷延迟较高、应用程序正在停止
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适用场景
- ONTAP
- SAN
- FCP
问题描述
- 高卷延迟(超过110毫秒)且应用程序正在停止：
::*> qos statistics volume latency show
Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud FlexCache SM Sync
--------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
-total- - 55.36ms 45.75ms 6.00us 926.00us 8.67ms 0ms 5.00us 0ms 0ms 0ms
my_lun_.. 25247 125.04ms 124.59ms 1.00us 279.00us 170.00us 0ms 0ms 0ms 0ms 0ms
my_lun__.. 23052 108.73ms 108.19ms 5.00us 218.00us 318.00us 0ms 0ms 0ms 0ms 0ms
- EMS显示某个特定设备 40A00中的以下错误：
Tue Mar 08 01:02:01 +0100 [NETAPP: fct_tpd_work_thread_0: fcp.io.status:debug]: STIO Adapter:1b IO WQE failure, Handle 0x1, Type 8, S_ID: 40A00, VPI: 275, OX_ID: 6E8, Status 0x3 Ext_Status 0x1d
Tue Mar 08 01:03:21 +0100 [NETAPP: fct_tpd_work_thread_0: fcp.io.status:debug]: STIO Adapter:1b IO WQE failure, Handle 0x1, Type 8, S_ID: 40A00, VPI: 275, OX_ID: 543, Status 0x3 Ext_Status 0x1d sfpshow在连接存在错误的设备的交换机端口上、接收到的光功率(Rx)信号非常低：
switch# switchshow
Index Slot Port Address Media Speed State Proto
============================================================
14 1 14 040a00 id N8 Online FC F-Port 51:40:2e:c0:xx:xx:xx:xx
switch# sfpshow 1/14
=============
Slot 1/Port 14:
=============
RX Power: -26.0 dBm (2.5 uW)
TX Power: -3.3 dBm (467.5 uW)