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由于 LUN 上的延迟较长,备份速度较慢

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Category:
ontap-9
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san
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适用场景

  • SAN
  • ONTAP 9
  • Red Hat Enterprise Linux (RHEL) 6.7

问题描述

  • 备份期间, LUN 上的延迟显示为峰值,达到 50 毫秒。
  • 一个节点上的卷 /LUN 由其配对节点访问

clipboard_e67be68a54902778558aa27044ee57a60.png

  • multipath -ll 从 Linux 主机显示硬件处理程序为 "0" , 并且路径不 按优先级分组

[root@linux ~]# multipath -ll
mpathaf (3600a09803831457544245248xxxxxxxx) dm-8 NETAPP,LUN C-Mode
size=500G features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=1 status=active
| `- 12:0:0:8 sdh  8:112  active ready running
|-+- policy='round-robin 0' prio=1 status=enabled
| `- 12:0:1:8 sdo  8:224  active ready running
|-+- policy='round-robin 0' prio=1 status=enabled
| `- 12:0:2:8 sdv  65:80  active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  `- 12:0:3:8 sdac 65:192 active ready running

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