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Solaris主机支持SnapMirror主动同步(以前称为SM-BC)配置中的建议设置

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适用场景

  • 具有SnapMirror主动同步功能的Solaris 11.3,11.4 (以前称为SM-BC)
  • Solaris SPARC和x86_64平台
  • ONTAP 9.9.1 及更高版本

问题描述

在使用默认Solaris OS设置执行SM-BC自动计划外站点故障转移(Automatic Unaruned Site Failover、AUFO)工作流之后、可能会在Solaris主机上观察到IO错误/中断

限制:

  • SM-BC可在发生集群/站点灾难时确保业务连续性。如果发生灾难、当托管主集群的站点发生灾难时、主机多路径软件会将通过主集群的所有路径标记为已关闭、在站点故障转移期间、I/O会通过二级集群路径恢复。
  • 发生灾难时、指向同一LUN的各种路径上的SCSI故障转移特征(ALOA)会在活动优化型(AO)和活动非优化型(ANO)之间切换
  • 如果使用Solaris OS的默认设置、则在SCSI故障转移特征发生变化时、Solaris多路径(MPxIO/SCSI_vhci)无法枚举路径。理想情况下、应重新探测所有路径、以确定先前探测的路径的特性是否发生了变化。相反、它会导致硬I/O错误。
  • /var/adm/messages中应有的示例消息如下所示:

Jul 31 xx:xx:xx host-A scsi_vhci: [ID 721035 kern.warning] WARNING: scsi_vhci: failover contradiction: 'f_tpgs'.vs.'f_tpgs': path /pci@400/pci@1/pci@0/pci@0/fibre-channel@0,1/fp@0,0/disk@w200300a098dfd69d,0

 

 

 

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