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Exadata compute node hangs after reboot with task blocked messages (Doc ID 1352806.1)

Last updated on JUNE 05, 2019

Applies to:

Oracle Exadata Hardware - Version 11.2.0.2 to 11.2.0.2 [Release 11.2]
Information in this document applies to any platform.

Symptoms

The compute node is rebooted gracefully but does not come back up following an extended period. The kernel messages, retrieved from a generated ILOM snapshot, may show errors similar to the following:

 


NFS related functions in the kernel error log such as nfs_kill_super and :nfs:nfs_put_super are a good indication that you're hitting this issue. Another requirement is the presence of NFS volumes mounted on the database node, which is playing the role of an NFS client. The remote NFS server may be connected via the Infiniband network.

Cause

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