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"Kernel reported iSCSI connection 1:0 error (1011) state (1)" 오류로 인해 iSCSI 연결이 간헐적으로 실패

Solution In Progress - Updated -

Issue

  • iSCSI 장치에 대한 연결이 주기적으로 실패하고 다음 오류 메시지가 /var/log/messages 파일에 기록됩니다.

    Jan  2 18:17:12 node1 iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (3)
    Jan  2 18:17:12 node1 iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (1)
    Jan  2 18:17:14 node1 kernel:  session1: target reset succeeded
    Jan  2 18:17:15 node1 iscsid: connection1:0 is operational after recovery (1 attempts)
    Jan  2 18:17:24 node1 kernel: sd 5:0:0:6: timing out command, waited 30s
    Jan  2 19:23:26 node1 kernel:  connection1:0: detected conn error (1011)
    Jan  2 19:23:27 node1 kernel:  connection1:0: detected conn error (1011)
    Jan  2 19:23:27 node1 iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (3)
    Jan  2 19:23:27 node1 iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (1)
    
  • 이 문제는 솔루션 45167 의 단계에 따라 tcp_window_scaling을 비활성화하고 솔루션 36141 에 따라 iSCSI 개시자 시간 초과 값을 늘린 후에도 계속 발생했습니다.

Environment

  • Red Hat Enterprise Linux 5.6
  • iSCSI SAN

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