mroot 迁移后无法切回

适用场景

• MetroCluster
• mroot 迁移

问题描述

• 由于 SVM 配置重新同步需要很长时间才能完成，在 mroot 迁移后执行的切回操作可能会失败。

ClusterA::*> metrocluster vserver show -vserver svm1 -instance
        Cluster Name: ClusterA
           Vserver: svm1
       Partner Vserver: svm1-mc
           Stream: 11aa22-1234-4567-aaaa-11aa22bb33cc
     Configuration State: syncing
      Corrective Action: -
Creation Time on the source: 12/11/2020 12:22:55
         Failed Row: -
     Reason for Failure: -
       Last Fail Time: -
        Stream Status: processing-task
       Is out of sync: -
        Failed object: -
  configuration Resume Time: -
     Reason for Failure: -

• mgwd 日志报告了以下错误： 

Fri Dec 11 2020 13:04:45 +01:00 [kern_mgwd:info:16937: MGWD::NSS: src/tables/name_services/nss.cc:2980:mkdirp mkdir failed  for path /mroot/etc/cluster_config/vserver/.vserver_3/config/name_services. Errno is 2