From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabien Salvi Subject: Re: LSI MegaRAID on Tyan S2469 MB Date: Fri, 30 Jan 2004 12:13:44 +0100 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <401A3C68.3030001@cri74.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from aravis.cur-archamps.fr ([195.202.0.99]:62422 "EHLO aravis.cur-archamps.fr") by vger.kernel.org with ESMTP id S263466AbUA3LN4 (ORCPT ); Fri, 30 Jan 2004 06:13:56 -0500 List-Id: linux-scsi@vger.kernel.org To: Steve Sutphen Cc: linux-scsi@vger.kernel.org, philipl@aslan.ab.ca Steve Sutphen a =E9crit: > I am having a difficult problem with an LSI MegaRAID 320-2 that is in= stalled > on a Tyan S2469 mother board with AMD Athlon's. The disks that I am = using > are Seagate 147GB drives.=20 > The problem is that the MegaRAID slows to a crawl, and then slows so = much > that it times out and cannot complete the queued commands (for ever i= t > seems). > I have verified that the controller is working. I have not been able= to=20 > get it to fail when I move the controller, disk array, and boot disk=20 > to a different system with a Tyan S2466 motherboard (and dual Athlon'= s). >=20 > [...] > My current theory is that there is some sort of incompatibility betwe= en > that motherboard (or perhaps the AMD chipset) and the LSI Logic MegaR= AID > controller. =20 You're right :) See below... > Does anyone have a similar system that is working? Has anyone encoun= tered > similar problems? What should I do next? Yes, I have exactly the same problems with the same Motherboard and I'v= e=20 got the solution ! In my system, I use a ICP-Vortex GDT8514 RAID controller in a Chenbro=20 chassis and get segmentation fault, core dumps, kernel panics, etc... I've contacted Chenbro, ICP-Vortex and Tyan about the problem. Chenbro seems not in cause. ICP-Vortex say me to set J92 jumper (force the primary PCI bus to=20 operate at 33 Mhz) and it's the solution. There seem to be a big problem with AMD chipset and 66Mhz bus. If you look at the Tyan documentation, they say : << Due to the tight PCI 66Mhz timing of the AMD-760 MPX chipset, it may be= =20 necessary to set the bus to 33Mhz when using Multiple PCI cards. >> ICP-Vortex said : << we've found that the board seems to run stable (at least during our tes= ts) if J92 is set, if J92 is open similar effects came up. We've tested the MSI K7D Master which didn't show these effetcs. >> And Tyan : << The problem is still directly with the ICP/Vortex device. You should b= e able to run this card in 66MHz mode with the non-SCSI version of the bo= ard. The AMD chipset is very picky and tricky to program for and it would se= em that ICP/Vortex is still having issues with this. Now these cards have been tested and found to work correctly without th= e problems you are seeing with your particular brand: AMI Elite 1600 DPT SmartRAID PM1564U3 Mylex AcceleRAID 250 Adaptec 3210s >> But, there is no way to make it work correctly at 66 Mhz. Good luck ! PS: I'm interested to know if it will correct your problem. --=20 =46abien SALVI - To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html