Date: Tue, 24 Sep 2002 10:24:06 -0700 (PDT) From: Nate Lawson <nate@root.org> To: Angelin Lazarov Lalev <alalev@uni-svishtov.bg> Cc: freebsd-hackers@freebsd.org Subject: Re: What does this log mean (SCSI problem ?) Message-ID: <Pine.BSF.4.21.0209241018340.65215-100000@root.org> In-Reply-To: <3D9045E1.7040302@uni-svishtov.bg>
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On Tue, 24 Sep 2002, Angelin Lazarov Lalev wrote: > I think I have a problem. From time to tme, apparently when the disk > activity of my IBM SCSI disk becomes higher, > all disk operations are suspended for about 30 seconds. After that all > continues ok, but the following log messages are written to the syslog. > Is that normal? > > Sep 18 16:39:53 ns1 /kernel: (da0:ahc0:0:6:0): SCB 0x15 - timed out ... This just means that the driver waited for IO to complete and it never happened so it reset the bus. > And this is what my kernel prints when I'm booting. > ... > Aug 21 10:07:39 ns1 /kernel: ahc0: <Adaptec aic7890/91 Ultra2 SCSI > adapter> port 0xd000-0xd0ff mem 0xcd000000-0xcd000fff irq 10 at device > 6.0 on pci0 > Aug 21 10:07:39 ns1 /kernel: aic7890/91: Ultra2 Wide Channel A, SCSI > Id=7, 32/253 SCBs > Aug 21 10:07:39 ns1 /kernel: pci0: <Matrox MGA Millennium II 2164W > graphics accelerator> at 9.0 irq 10 I noticed both the ahc and mga are on irq 10. I've had some real problems with Matrox cards sharing irqs with other devices. Try moving the card order on the PCI bus. This is just a hunch. > Aug 21 10:07:40 ns1 /kernel: Waiting 15 seconds for SCSI devices to settle > Aug 21 10:07:40 ns1 /kernel: Mounting root from ufs:/dev/da0s1a > Aug 21 10:07:40 ns1 /kernel: da0 at ahc0 bus 0 target 6 lun 0 > Aug 21 10:07:40 ns1 /kernel: da0: <IBM DNES-309170W SA30> Fixed Direct > Access SCSI-3 device > Aug 21 10:07:40 ns1 /kernel: da0: 80.000MB/s transfers (40.000MHz, > offset 31, 16bit), Tagged Queueing Enabled > Aug 21 10:07:40 ns1 /kernel: da0: 8748MB (17916240 512 byte sectors: > 255H 63S/T 1115C) You might also try with tagged queuing disabled. -Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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