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Happy new year ! We have a SuperMicro server with a LSI MegaRAID 9260-4i controller. Since Centos 6.6 update (kernel 2.6.32-504), the controller doesn't initialize at boot. Reverting to kernel 2.6.32-431 allows server to boot fine. The server can't boot due to a bug in LSI megaraid module. Boot log ends by a lot of lines: RESET_GEN2: retry=xxx, hostdiag=a4 I tried Centos 6.6

...nectors in a different orientation... you might check your > LSI firmware revision. My firmware seems to be more up to date. Anyway, I will try to update firmware. I have to check how to do that. # dmesg |grep LSI scsi4 : LSI SAS based MegaRAID driver scsi 4:2:0:0: Direct-Access LSI MR9260-4i 2.13 PQ: 0 ANSI: 5 # /opt/MegaRAID/MegaCli/MegaCli64 -ShowSummary -aAll System Operating System: Linux version 2.6.32-431.29.2.el6.x86_64 Driver Version: 06.700.06.00-rh1 CLI Version: 8.07.14 Hardware Controller ProductName : LSI MegaRAID SAS 9260-4i(B...

...everting to kernel 2.6.32-431 allows server to > boot fine. > I have a similar system, and don't have your problem: # uname -rv 2.6.32-504.3.3.el6.x86_64 #1 SMP Wed Dec 17 01:55:02 UTC 2014 # dmesg | grep LSI scsi4 : LSI SAS based MegaRAID driver scsi 4:2:0:0: Direct-Access LSI MR9260-4i 2.13 PQ: 0 ANSI: 5 Copyright (c) 1999-2008 LSI Corporation # dmesg | grep Supermicro DMI: Supermicro X8DTU/X8DTU, BIOS 2.1b 12/30/2011 > The server can't boot due to a bug in LSI megaraid module. Boot log > ends by a lot of lines: > > RESET_GEN2: retry=xxx, hostd...