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CVO 升级导致根卷恢复

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适用于

Cloud Volume ONTAP (CVO)

问题

  • EMS 报告错误:
[xxxxxx:mgmtgwd.rootvolrec.low.space:EMERGENCY]: The root volume on node xxxxxx is dangerously low on space. Less than 10 MB of free space remaining.
 
  • 升级会导致 MGMT 集群应用在一个节点上停机,而所有集群应用在另一个节点上停机。
  • 双节点集群的一个节点无法运行任何 clustershell 命令:
cluster::> cluster show

Error: "show" is not a recognized command

 

原因

  • 由于 vol0 快照和旧的核心文件,根卷"vol0"几乎已满。
  • 当 vol0 满时,使用 Cloud Manager 从 Web 服务器"getAPI"映像会导致映像写入 vol0。vol0 无法接受整个映像,并使 MGMT 应用程序停机,并在不是 Cluster Master 的节点上设置 rdb 标志。

解决方案

请联系NetApp 技术支持或登录 NetApp 支持站点以创建案例。请参阅本文以获取解决方案的帮助。 

  • 该解决方案需要诊断级恢复。
  • 使用诊断命令和恢复步骤可能会造成中断,只能在 NetApp 支持人员的指导下使用。 

追加信息

追加信息文本

内部参考

 1.清除所有集群应用关闭的节点上的 rdb 标志:

  • 确认已设置标记:
system configuration recovery node mroot-state clear -recovery-state
 
RDB Recovery State: 5550055000
VLDB: RDB auto-recovery failed to find master (5)
Management: RDB auto-recovery failed to find master (5)
VifMgr: RDB auto-recovery failed to find master (5)
Bcom: RDB auto-recovery failed to find master (0)
Crs: RDB auto-recovery failed to find master (0)
 
  • 清除标记:
system configuration recovery node mroot-state clear -recovery-state rdb
 

 

 2.删除 vol0 快照和旧核心文件:

  • 进入完整的 vol0 nodeshell:
::> node run -node <affected Node>
 
  • 删除 vol0 的快照列表:
snap del -a vol0
 
  • 将 vol0 快照计划设置为"0 0 0",以便不再拍摄快照:
snap sched 0 0 0
 
 

 3.重新启动受影响的节点。

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