Date: Fri, 7 Mar 2003 01:04:49 -0800 From: David Schultz <das@FreeBSD.ORG> To: "Marc G. Fournier" <scrappy@hub.org> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: bug in aac driver ... ? Message-ID: <20030307090449.GB61037@HAL9000.homeunix.com> In-Reply-To: <20030305224856.R38115@hub.org> References: <20030305224856.R38115@hub.org>
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Thus spake Marc G. Fournier <scrappy@hub.org>: > I have an Intel server (SVW7500, or some designation like that) setup > with an Adaptec 2120S controller in it: > > aac0: <Adaptec SCSI RAID 2120S> mem 0xf8000000-0xfbffffff irq 2 at device 9.0 on pci1 > aac0: i960RX 100MHz, 48MB cache memory, optional battery present > aac0: Kernel 4.0-0, Build 5770, S/N 232fb7 > > Originally, when we installed it, we had a problem where, while booting, > you would suddenly get the 'aac timeout' message scroll up the screen, > that has/had since been fixed ... > > Yesterday, after doing some work on one of our servers to increase the # > of vnodes, I added and built a new kernel with: > > options VM_KMEM_SIZE="(400*1024*1024)" > options VM_KMEM_SIZE_MAX="(400*1024*1024)" > > Which I have running on venus (its using an AMI RAID card) without any > hassles ... upon reboot of the Adaptec/Intel server, I once more am > getting the Timeouts and inability to boot ... a kernel built 10 minutes > earlier, without those options, but the exact same code, runs fine, so > something with the VM_KMEM_SIZE increase is causing the problem ... I don't know why VM_KMEM_SIZE would tickle a RAID controller problem, but I've seen timeout message similar to the one you describe with a flaky SCSI controller. (Try statically compiling all relevant drivers into the kernel if you're not already.) The fix for me was to reduce the tag depth with camcontrol. Try a value around 8 or so; there shouldn't be much, if any, of a performance difference. camcontrol tags devicename -N8 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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