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qtree 的 NDMP 子树备份传输的数据远远超过 qtree 所包含的数据

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ndmp<a>2008796040</a>
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适用场景

  • ONTAP
  • NDMP 子树备份
 

问题描述

  • qtree 的 NDMP 子树备份包含的数据很少( 10 KB ),可备份的数据(数十 GB )多于 qtree 中的数据
  • 观察到子树备份的转储阶段 II 时间异常长,如阶段 III
  • 备份结束时,备份数十 GB 的数据
  • 在检查备份日志, ndmpd 日志或 qtree 本身时,附加数据的源不明显
  • 在这些备份日志摘录中, 索引节点总数 为零,目录数为 2 ,所有索引节点的目标大小为零:
dmp Tue Jun 8 13:15:35 PDT 2021 /svm-name/vol1/qtree1(0) Log_msg (Total count of all - reg inodes: 0 lun inodes: 0 other inodes: 0 dirs: 2 nt dirs: 0 nt inodes: 0 acls: 0
dmp Tue Jun 8 13:15:35 PDT 2021 /svm-name/vol1/qtree1(0) Log_msg (Total size of all - reg inodes: 0 lun inodes: 0 other inodes: 0 dirs: 8 nt dirs: 0 nt inodes: 0 acls: 0
 
  • 与准确的索引节点统计信息不一致,会备份超过 13 GB 的数据:
dmp Tue Jun 8 13:43:46 PDT 2021 /svm-name/vol1/qtree1(0) End (13476 MB)

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