磁盘设备错误上的 MetroCluster 高写入延迟命令超时

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适用场景

MetroCluster
ATTO FibreBridge
ONTAP 9

问题描述

由于写入延迟较长， MetroCluster 客户端的性能较慢。
事件日志会持续生成磁盘设备超时和因主机适配器错误而中止的命令：

fci.device.quiesce:debug: Adapter 1a encountered a command timeout on disk device sw01:8.126 (0x01090810) LUN 1013 cdb 0x47:30e3ec01:0700 retry: 0 Quiescing the device scsi.cmd.abortedByHost: Disk device sw01:8.126L1023: Command aborted by host adapter: HA status 0x4: cdb 0x28:d12f4ff8:0003

事件日志中会持续生成 ATTO Fibrebridge 光纤通道（ FC ）端口脱机和连接错误：

fc.bridge.fc.port.alert: Fibre Channel FibreBridge7500N Bridge ATTO_2000001023a45670 S/N: FB7500N101234 WWN: 2000001086a12340 FC Port FC_PORT1 offline. fc.bridge.fc.port.notice: Fibre Channel FibreBridge7500N Bridge ATTO_2000001023a45670 S/N: FB7500N101234 WWN: 2000001086a12340 FC Port FC_PORT1 connected