Cellsrv is Hanging and RS Restarting with cellsrv RS-7445 After Upgrading to 12.1.1.1.1

(Doc ID 2013522.1)

Last updated on MAY 27, 2015

Applies to:

Oracle Exadata Storage Server Software - Version 12.1.1.1.1 to 12.1.1.1.1 [Release 12.1]
Information in this document applies to any platform.

Symptoms

 

After upgrading from 11.2.3.2.1 to 12.1.1.1.1

Cellsrv is hanging and RS restarting cellsrv RS-7445 [Serv CELLSRV hang detected]

* Every time cellsrv hungs, seconds before, there are messages related to NO IO COMPLETION, and always are FlashDisks.

 

* Iostat reports zero IO activity on all flashdisks. We would expect the device reported in the message having some large value on any of the attributes, but not.

* This system is a Full Rack X2-2 with half Expansion Rack X3-2.

* The cellsrv crash only happens on the X2-2 cells although we also have the report of the NO IO COMPLETION on the X3-2 cxells.

Changes

Uupgraded from 11.2.3.2.1 to 12.1.1.1.1 

Cause

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