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iSCSI 接続が失われると、リモート ADP パーティションで障害が発生します

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Category:
metrocluster
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環境

  • ONTAP 9
  • MetroCluster IP
  • A300 / FAS8200、A200 / FAS2600、A220 / FAS2700、A700 / FAS9000、FAS8300、 A250またはC190
  • クラスタ間の iSCSI 接続の中断 
  • バックエンドスイッチのメンテナンス / 障害
  • SyncMirror プレックスで障害が発生しました
  • ディスク / シェルフ数が一致しません

問題

  • クラスタ間 not respondingの接続が一時的に失われると、リモートドライブがとしてマークされる可能性があります。イベントログに次のようなメッセージが表示されます。 

[NodeA: intr: ctl.session.stateChanged:notice]: iSCSI CAM target layer's session state is changed to terminated for the initiator iqn.1994-09.org.freebsd:185abf42-1aba-11eb-a6fc-d039ea45ec7d (address: 10.1.2.3). Reason: no ping reply after 5 seconds.
[NodeA: kernel: iscsi.session.stateChanged:notice]: iSCSI session state is changed to Reconnecting for the target iqn.2016-07.com.netapp:f4d3fb1c-1aba-11eb-a87d-d039ea45eac8 (type: dr_partner, address: 10.1.1.4:65200). Reason: no ping reply after 5 seconds.

  • sysconfig -a に、次のような出力を示します。

   slot 0: Virtual iSCSI Host Adapter 0m 
        ...
      10.20: NETAPP   X371_SLNGE960ATE NA52 915.4GB 520B/sect (S/N) (Failed)

  • sysconfig -r 出力は似ています。 
 Local broken disks RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- not responding 0m.i2.1L21P3 0m 0 21 1 SSD N/A 63849/130764288 63857/130780672 ... not responding 0m.i1.3L27 0m 10 20 1 SSD N/A 915465/1874872832 915715/1875385008 

 

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