[PATCH v2 3/4] mpt3sas: Fix Firmware fault state 0x2100 during heavy 4K RR FIO stress test.

2017-01-20 Thread Chaitra P B
Due existence of loop in the IO path our HBA will receive heavy IOs and also as driver is not updating the Reply Post Host Index frequently, So there will be a high chance that our Firmware unable to find any free entry in the Reply Post Descriptor Queue (i.e. Queue overflow occurs) and can observe

Re: [PATCH v2 3/4] mpt3sas: Fix Firmware fault state 0x2100 during heavy 4K RR FIO stress test.

2017-01-20 Thread Johannes Thumshirn
On Fri, Jan 20, 2017 at 08:12:12PM +0530, Chaitra P B wrote: > Due existence of loop in the IO path our HBA will receive heavy IOs and > also as driver is not updating the Reply Post Host Index frequently, So > there will be a high chance that our Firmware unable to find any free entry > in the Rep

Re: [PATCH v2 3/4] mpt3sas: Fix Firmware fault state 0x2100 during heavy 4K RR FIO stress test.

2017-01-20 Thread Sreekanth Reddy
On Fri, Jan 20, 2017 at 8:40 PM, Johannes Thumshirn wrote: > On Fri, Jan 20, 2017 at 08:12:12PM +0530, Chaitra P B wrote: >> Due existence of loop in the IO path our HBA will receive heavy IOs and >> also as driver is not updating the Reply Post Host Index frequently, So >> there will be a high ch