4 Seconds of IO Disruption While New LUNs are Being Added to a Server. (Doc ID 2222153.1)

Last updated on JANUARY 12, 2017

Applies to:

Solaris Operating System - Version 10 3/05 to 11.3 [Release 10.0 to 11.0]
Information in this document applies to any platform.

Symptoms

Solaris SPARC server running Solaris 10 / Solaris 11 connected to an external array through a SAN setup.
The connection details are irrelevant here.

A 4 seconds IO disruption is observed when new LUs are added to the server, while using some third party multipathing solution, as for example Veritas DMP.

The case exposed below demonstrates this issue. On this particular test scenario, the customer was running a simple dd command on the following drives

 

Cause

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