Date: Tue, 20 Apr 1999 20:18:34 +0200 (CEST) From: Wilko Bulte <wilko@yedi.iaf.nl> To: barry@lustig.com Cc: stable@FreeBSD.ORG, scsi@FreeBSD.ORG Subject: Re: SCSI Failure during Amanda Backup (Unexpected busfree) Message-ID: <199904201818.UAA00793@yedi.iaf.nl> In-Reply-To: <19990420153315.2118.qmail@devious.lustig.com> from Barry Lustig at "Apr 20, 1999 11:33:14 am"
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As Barry Lustig wrote ... > First the problem: Starting on 4/3, my amanda backups have started > failing. At the point of failure the following appears on the console: > > (sa0:ahc0:0:5:0): SCB 0x4 - timed out while idle, LASTPHASE == 0x1, SEQADDR == 0x9 > (sa0:ahc0:0:5:0): Queuing a BDR SCB > (sa0:ahc0:0:5:0): Bus Device Reset Message Sent > (sa0:ahc0:0:5:0): no longer in timeout, status = 34b > ahc0: Bus Device Reset on A:5. 1 SCBs aborted > Unexpected busfree. LASTPHASE == 0x0 > SEQADDR == 0x5d > > My system consists of an Asus P2B-DS motherboard: > > ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> > rev 0x00 int a irq 19 on pci0.6.0 > ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs > > sa0 at ahc0 bus 0 target 5 lun 0 > sa0: <Quantum DLT4000 D782> Removable Sequential Access SCSI-2 device > sa0: 10.000MB/s transfers (10.000MHz, offset 15) > da1 at ahc0 bus 0 target 1 lun 0 > da1: <IBM DGHS18U 0350> Fixed Direct Access SCSI-3 device > da1: 40.000MB/s transfers (20.000MHz, offset 15, 16bit), > Tagged Queueing Enabled > da1: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) > changing root device to da0s1a > da0 at ahc0 bus 0 target 0 lun 0 > da0: <IBM DCAS-34330W S65A> Fixed Direct Access SCSI-2 device > da0: 40.000MB/s transfers (20.000MHz, offset 15, 16bit) > da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) > cd0 at ahc0 bus 0 target 6 lun 0 > cd0: <TOSHIBA CD-ROM XM-6201TA 1037> Removable CD-ROM SCSI-2 device > cd0: 10.000MB/s transfers (10.000MHz, offset 16) > cd0: cd present [101210 x 2048 byte records] > > Filesystem 1K-blocks Used Avail Capacity Mounted on > /dev/da0s1a 127023 23582 93280 20% / > /dev/da0s1h 1688711 861751 691864 55% /usr > /dev/da0s1g 508143 448475 34261 93% /usr/obj > /dev/da0s1f 1016303 706570 228429 76% /usr/ports > /dev/da0s1e 254063 126773 106965 54% /var > /dev/da1s1e 17369075 10515107 5464442 66% /d1 > > Remote machine: > /dev/sd0a 998204 729067 239190 75% / > > > I am using all 3 SCSI connectors on the motherboard. The 50 pin connector Wrong. This is one SCSI bus as far as I can see. SCSI buses are linear things, not star shaped. And they have only 2 terminators, each on every end of the bus. So: T=terminator D=scsi device H= hostadapter T-------D--------H--------D-------T is OK T-------D--------H--------D-------T | D | T is definitely wrong. To add to that using external and internal (flat) cables is generally not recommended, especially not on Ultra (or faster) buses. Configure things correctly and try again. BTW I recommend putting the DLT on it's own bus. It likes that (for speed). Groeten / Cheers, Wilko _ ______________________________________________________________________ | / o / / _ Arnhem, The Netherlands |/|/ / / /( (_) Bulte WWW : http://www.tcja.nl _______________________ Powered by FreeBSD ___ http://www.freebsd.org _____ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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