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After "megasas: Failed to init firmware" kdump hangs "Waiting for sda..." in RHEL5

Solution Verified - Updated 2014-11-03T19:00:13+00:00 -

Issue

Customer is trying to kdump to local disk. kdump init is hanging at:

Waiting for sda...

Further investigation shows the drive controller is not initializing properly:

megasas: Waiting for FW to come to ready state  
megasas: FW now in Ready state  
megasas: Failed to init firmware

The megaraid_sas (megasas) driver is able to initialize the firmware during the normal (non-kdump) boot.
This issue can be replicated on an IBM System x3690 X5 wth LSI Logic / Symbios Logic MegaRAID SAS 9240 (ServeRAID M1015 SAS/SATA Controller).

Environment

Red Hat Enterprise Linux 5
ServeRAID M1015 SAS/SATA Controller - firmware earlier than 20.1.1-0059

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