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SMAS 故障转移后目标路径计数减少

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适用于

  • SnapMirror Active Sync (SMAS)
  • SnapMirror 业务连续性(SMBC)
  • Windows Server
  • VMware ESXi 8.0.3

问题

  • 在执行从站点 A 到站点 B 的 SnapMirror Active Sync(SMAS)计划故障切换后,对于其中一个 LUN,主机端每个 LUN 仅可见 4  条路径,而不是预期的 8 条路径(站点 A 4 条,站点 B 4 条)。
  • 尝试从主机端重新扫描和重新启动未能恢复丢失的路径。
  • 未报告明确的 ONTAP 错误代码。
  • 日志中未确认 APD(所有路径关闭)或 PDL(永久设备丢失)
  • 未发现存储端、SAN 或 SnapMirror 配置问题
  • 未发现导致此行为的已知 ONTAP 缺陷
  • 根据从受影响 LUN 的 DR/辅助端共享的 debug san lun show-target-port-groups输出,我们正在向主机通告路径 13e8(5096)和 13e9(5097),这意味着  ONTAP 端没有问题,因为我们已从辅助端正确通告了路径。
  • 但是,Windows 端的  mpclaim   输出未列出路径 5096 和 5097。
    由于同一节点上的另一个 LUN 在主机端正确报告了路径,这表明不存在此类 发现或会话相关问题。
     
cluster::>set d
cluster::*> debug san lun show-target-port-groups
Vserver Node                 Path  Target Port Groups
------- -------------------- ----- ------------------------------------------
svm_dr                /vol/vol1/lun1
        Node-01           13e9 Active/Non-Optimized: 6
                                   13e8 Active/Optimized: 5
                                   13e9 Active/Non-Optimized: 4
                                   13e8 Active/Optimized: 2
        Node-02           13e9 Active/Non-Optimized: 6
                                   13e8 Active/Optimized: 5
                                   13e9 Active/Non-Optimized: 4
                                   13e8 Active/Optimized: 2
PS C:\> mpclaim -s -d 6
MPIO Disk6: 06 Paths, Round Robin with Subset, Implicit Only
    Controlling DSM: Microsoft DSM
   SN: 600A098038323461692B596157xyxyxy ---> 受影响的 LUN(共 4 条未优化路径和无优化路径--LUN 共 4 条路径)
Missing Paths to the DR Site ( 2 Paths missing)
    Supported Load Balance Policies: FOO RRWS LQD WP LB
    Path ID          State              SCSI Address      Weight
    ---------------------------------------------------------------------------
    0000000077020005 Active/Unoptimized 002|000|005|001   0
      TPG_State : Active/Unoptimized, TPG_Id: 1001, : 4
    0000000077020004 Active/Unoptimized 002|000|004|001   0
      TPG_State : Active/Unoptimized, TPG_Id: 1000, : 2
  
 0000000077020001 Active/Unoptimized 002|000|001|001   0
      TPG_State : Active/Unoptimized, TPG_Id: 1001, : 3
    0000000077020000 Active/Unoptimized 002|000|000|001   0
      TPG_State : Active/Unoptimized, TPG_Id: 1000, : 1
PS C:\> mpclaim -s -d 7
MPIO Disk7: 06 Paths, Round Robin with Subset, Implicit Only
    Controlling DSM: Microsoft DSM
    SN: 600A098038323461692B596157xxxxxx ---> 未受影响的 LUN(共 5 条未优化路径和 1 条优化路径--LUN 共 6 条路径)
    Supported Load Balance Policies: FOO RRWS LQD WP LB
Path ID          State              SCSI Address      Weight
    ---------------------------------------------------------------------------
    0000000077020005 Active/Unoptimized 002|000|005|002   0
      TPG_State : Active/Unoptimized, TPG_Id: 1001, : 4
    0000000077020004 Active/Unoptimized 002|000|004|002   0
      TPG_State : Active/Unoptimized, TPG_Id: 1000, : 2
    0000000077020003 Active/Unoptimized 002|000|003|002   0
      TPG_State : Active/Unoptimized, TPG_Id: 5097, : 4102
    0000000077020002 Active/Optimized   002|000|002|002   0
      TPG_State : Active/Optimized  , TPG_Id: 5096, : 4101
    0000000077020001 Active/Unoptimized 002|000|001|002   0
      TPG_State : Active/Unoptimized, TPG_Id: 1001, : 3
    0000000077020000 Active/Unoptimized 002|000|000|002   0
      TPG_State : Active/Unoptimized, TPG_Id: 1000, : 1

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