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Unable to SSH to the OCI Instance Due to Unresponsive Iscsi Boot Volume

edited Dec 20, 2023 8:23PM in Linux

APPLIES TO                                                                                                                    

Oracle Cloud Infrastructure - Version N/A and later

Linux OS - Version Oracle Linux 7.0 and later

SYMPTOMS:                                                                                                                   

Lost access to an OCI instance and unable to ssh into it when boot volume is configured with iscsi.   Multiple iscsid timeout could appear in the console or dmesg  at the time of the problem.

[242048.629436] session1: iscsi_eh_cmd_timed_out scsi cmd ffff8caf37397548 timedout
[242048.629437] session1: iscsi_eh_cmd_timed_out return timer reset
[242055.285455] session1: iscsi_eh_cmd_timed_out scsi cmd ffff8caf37391148 timedout
[242055.285457] session1: iscsi_eh_cmd_timed_out return timer reset

Other possible symptoms may include

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