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在第一和第二阶段、NDMP还原非常慢

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适用场景

  • ONTAP 9
  • NDMP还原(非DAR、异地)
  • 间接拓扑
  • DMA:EMC Networker

问题描述

  • 即使DMA和 NetApp NDMP日志中没有错误、NDMP还原也非常慢。
  • 查看 BACKUP.GZ 日志、 阶段1和2是瓶颈。

rst ... Log_msg (Phase 1 total time (sec): 117548

rst ... Log_msg (Phase 2 total time (sec): 245150

rst ... End (31578032 files, 1943817 MB processed, 357 MB skipped, 395910 secs, 4 MBps)

  • 目录结构非常密集(深度嵌套多达8到9个级别)。查找inomap映射文件所花费的时间非常长。

rst ... Log_msg (VM inomap  : wait_time (sec) (77353), lookup_time (sec) (303568))

rst ... Log_msg (VM dirmap  : wait_time (sec) (113369), lookup_time (sec) (219604))

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