Exadata: On KVM Based VMs, 'ibstatus' Shows Port DOWN and Causes RDS Communication Issues with Other VMs and Cell Nodes
(Doc ID 2697215.1)
Last updated on JANUARY 18, 2021
Applies to:
Linux OS - Version Oracle Linux 7.7 with Unbreakable Enterprise Kernel [4.14.35] and later
Linux x86-64
Symptoms
- VMs loses rds connectivity to all the other VMs and Cells.
- This causes Clusterware restarts. (some times VMS also crashes but no vmcore is dumped)
- Below call traces are seen from the system logs.
- ibstatus of this VM shows link status down and rds-info shows rds-ping in failed status.
- In the KVM host (physical layer) all the ports are up.
Cause
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