Date: Thu, 14 Dec 2000 20:11:47 +1030 From: Greg Lehey <grog@lemis.com> To: "Morten A . Middelthon" <morten@freenix.no> Cc: freebsd-stable@freebsd.org Subject: Re: Vinum or hardware fault? Message-ID: <20001214201147.K84354@wantadilla.lemis.com> In-Reply-To: <20001214100859.C466@freenix.no>; from morten@freenix.no on Thu, Dec 14, 2000 at 10:08:59AM %2B0100 References: <20001214100859.C466@freenix.no>
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On Thursday, 14 December 2000 at 10:08:59 +0100, Morten A . Middelthon wrote: > > I'm using vinum to set up a striped plex with three 9GB scsi disks: > > da2: <IBM DMVS09V 0250> Fixed Direct Access SCSI-3 device > da3: <IBM DMVS09V 0100> Fixed Direct Access SCSI-3 device > da4: <IBM DMVS09V 0100> Fixed Direct Access SCSI-3 device > > I'm not using soft-updates here. > > The SCSI controller is integrated on an Asus P2B-DS mainboard: > > ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> port 0xb000-0xb0ff mem > 0xe1000000-0xe1000fff irq 10 at device 6.0 on pci0 > aic7890/91: Wide Channel A, SCSI Id=7, 32/255 SCBs > > da0 and da1 are not using vinum. > > Other than that the box has got two Pentium III 500MHz CPUs, 512MB of ram and > is running FreeBSD 4.1.1-STABLE. > > The vinum plex had been running for a week or two, and the activity was > reasonably low. But then my server froze and I got these error-messages: > > Dec 12 12:35:05 enterprise /kernel: ahc0:A:4: parity error detected in Message-in phase. SEQADDR(0x171) SCSIRATE(0x0) > (several of these) > Dec 12 12:35:05 enterprise /kernel: ahc0: Unexpected busfree in Message-out phase > Dec 12 12:35:05 enterprise /kernel: SEQADDR == 0x170 > > To me this looks like there's something wrong the fifth and last disk (ahc0:A:4). > I had to reboot the box, but upon reboot fsck didn't > complain about anything out of the ordinary, and I was able remount the vinum > plex. Can anyone tell me if this is vinum's or the hardware's fault? This is certainly a hardware fault. Software can't generate parity errors on the SCSI bus. The question is what component has failed; it could be just about anything on the bus, including the cable and the terminators. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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