Dell Unity:当 Dynamic Pool 中的磁盘发生故障时,阵列性能可能会受到影响
Summary: 当 Dynamic Pool 中的磁盘发生故障时,阵列性能可能会受到影响。
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Symptoms
动态池可以使用池中已分配的空间进行重建。
重建开始时,数据完全不可用,直到更换故障磁盘并完成重建。
重建完成后,性能恢复正常。
动态池出现驱动器故障。
池开始重建到池中的备用空间。
这会影响阵列性能,导致数据不可用。
Cause
问题的根本原因是主机 I/O 速度变慢,因为 SP 使用这些资源。
动态池重建/重新洗牌作会消耗大量资源,以致没有足够的剩余资源用于主机 I/O。
Resolution
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这将在 Unity 代码的未来版本中得到解决。
我们可以使用以下步骤确认问题:
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建立与阵列的 SSH 会话。
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使用以下命令进行验证,以确定有问题的池是否为动态池:
命令:uemcli /stor/config/pool -name "<name of pool>" show -detail示例:
15:25:23 service@APMx spb:~/user> uemcli /stor/config/pool -name "My Dynamic Pool" show -detail Storage system address: 127.0.0.1 Storage system port: 443 HTTPS connection 1: ID = pool_4 Type = Dynamic Name = My Dynamic Pool Description = Total space = 6176968278016 (5.6T) <...>
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使用以下命令验证重建正在进行中:
命令:cat /EMC/C4Core/log/EMCSystemLogBackup.log | grep -i "<pool name>"示例:
15:26:23 service@APMx spb:~/user> cat /EMC/C4Core/log/EMCSystemLogBackup.log | grep -i "My Dynamic Pool" "2019-04-13T18:40:02.213Z" "spb@APMx" "Neo_CEM" "23864" "N/A" "WARN" "14:6032d" :: "Storage pool My Dynamic Pool is degraded." :: Category=User Component=Health TimeZone=UTC "2019-04-13T18:45:12.766Z" "spb@APMx" "Neo_CEM" "23864" "N/A" "WARN" "14:60343" :: "Storage pool My Dynamic Pool is rebuilding due to the loss of a drive." :: Category=User Component=Health TimeZone=UTC
如上面突出显示,该命令提供的输出表明池已降级,并报告“池正在重建”。
Affected Products
Dell EMC Unity 650FProducts
Dell EMC Unity 300F, Dell EMC Unity 350F, Dell EMC Unity XT 380F, Dell EMC Unity 400F, Dell EMC Unity 450F, Dell EMC Unity XT 480F, Dell EMC Unity 600F, Dell EMC Unity 650F, Dell EMC Unity XT 680F, Dell EMC Unity XT 880F
, Dell EMC Unity Family |Dell EMC Unity All Flash
...
Article Properties
Article Number: 000055614
Article Type: Solution
Last Modified: 20 Oct 2025
Version: 5
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