メインコンテンツへスキップ

NetApp AFF-A400における高遅延と断続的なマルチパス経路損失

Views:
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

環境

  • NetApp AFF-A400
  • ONTAP 9.13.1P6
  • iSCSI SAN環境
  • マルチパスおよびPacemaker A-S構成を使用するLinuxベアメタルホスト

問題

  • 特定のホストで断続的なマルチパス経路の損失と高いディスク待機時間が発生

  • マルチパスログには、パスの障害と復旧状況が表示されます:

    Host1 multipathd[971]: 3600a098038314b646f2455514f435474: sdg - tur checker timed outHost1 kernel: device-mapper: multipath: 253:18: Failing path 8:96.Host1 pacemaker-controld[15153]: notice: High CPU load detected: 36.180000
  • ONTAPパフォーマンス指標によると、特に「suspend other」カテゴリで高いレイテンシが示されています。

    WAFL_SPINNP_WRITE-VOLUME_FENCED 109939242.50VOL_GET_WAFL_STATS-VOLUME_FENCED 102011041.50
  • 対応する時刻のEMSログには複数のwafl.vol.snap_create.doneイベントが表示されます:

    [Filer1:wafl_exempt11:wafl.vol.snap_create.done:info]: params:{'vol':'...','run_time':'1144'}

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.