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RHEL で「ping タイムアウト」が報告されると、iSCSI デバイスで I/O エラーと接続障害が発生する理由

Solution Verified - Updated -

Issue

  • /var/log/messages に iSCSI エラーが表示されます。

    iscsid: connection1:0: ping timeout of 5 secs expired, recv timeout 5, last rx 4363801791, last ping 4363806791, now 4363811791  
iscsid:Kernel reported iSCSI connection 1:0 error (1011) state (3)

  • iSCSI ping のタイムアウトがログに発生すると、アプリケーションが I/O エラーを受けます。

Environment

  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 5
  • iscsi-intiatior-utils

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