iscsid: Kernel reported iSCSI connection 1:0 error (1020 - ISCSI_ERR_TCP_CONN_CLOSE: ...)
in Linux
Applies To:
Oracle Cloud Infrastructure - Version N/A and later
Goal:
Below messages appear sporadically in OCI instances:
Sep 22 04:34:28 kernel: connection1:0: detected conn error (1020) Sep 22 04:34:28 iscsid: Kernel reported iSCSI connection 1:0 error (1020 - ISCSI_ERR_TCP_CONN_CLOSE: TCP connection closed) state (3) Sep 22 04:34:31 iscsid: connection1:0 is operational after recovery (1 attempts)
No other related lines are present in the error and connection is recovered in 2 or 3 seconds.
Solution:
This is normal and can be safely ignored.
The error sequence indicates that there was a temporary problem in connectivity to the storage backend but it was safely recovered within seconds.
Sep 22 04:34:28 kernel: [19149096.364474] connection1:0: detected conn error (1020) <<<< connection error Sep 22 04:34:28 iscsid: Kernel reported iSCSI connection 1:0 error (1020 - ISCSI_ERR_TCP_CONN_CLOSE: TCP connection closed) state (3) <<<<<< connection was closed Sep 22 04:34:31 iscsid: connection1:0 is operational after recovery (1 attempts) <<<<<<<<<<< the connection was actually in use and was recovered successfully after 3 seconds.
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