Date: Fri, 10 Oct 2003 12:33:39 +0200 From: Joan Picanyol <lists-freebsd-stable@biaix.org> To: freebsd-stable@freebsd.org, freebsd-scsi@freebsd.org Subject: help needed debugging SCSI bus problem Message-ID: <20031010103339.GA1093@grummit.biaix.org>
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[not subscribed to -scsi, if OT for stable please keep me in Mail-Followup-To:] Hi, I can hang my system at will reading from my SCSI CD-RW. My hardware is (excerpt from dmesg): ahc0: <Adaptec 2940 Ultra2 SCSI adapter> port 0x1000-0x10ff mem 0xd0020000-0xd00 20fff irq 11 at device 14.0 on pci0 aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs [...] cd0 at ahc0 bus 0 target 2 lun 0 cd0: <YAMAHA CRW2100S 1.0G> Removable CD-ROM SCSI-2 device cd0: 20.000MB/s transfers (20.000MHz, offset 7) [...] da0 at ahc0 bus 0 target 0 lun 0 da0: <SEAGATE ST318438LW 0003> Fixed Direct Access SCSI-3 device da0: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled da0: 19001MB (38914049 512 byte sectors: 255H 63S/T 2422C) [...] da1 at ahc0 bus 0 target 6 lun 0 da1: <IBM DNES-309170W SA30> Fixed Direct Access SCSI-3 device da1: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing Enabled da1: 8748MB (17916240 512 byte sectors: 255H 63S/T 1115C) I can't paste the error messages, but I see a Dumping Card Ends. The first error is an SCB timeout (0x25) on 0:6:0 (the IBM drive). I also see other SCB timeout on 0:0:0 (the Seagate drive). I can break into the debugger, but that's not much use (I'm always on the keyboard interrupt handling routine) and I wouldn't know where to go from there anyway. Would a panic be helpful (I'd would be painful to setup but I would if needed)? Oh, I'm running -stable from last week: (12:26:50 <~>) 0 $ uname -v FreeBSD 4.9-RC #1: Fri Oct 3 21:02:09 CEST 2003 joan@grummit.biaix.org:/fs/ tmp/mount/tmp/build/obj/fs/bulk/mount/FreeBSD/src/sys/GRUMMITD I really don't know how to go on, any hints on what to do to help debugging or what the source of the problem might be are most welcomed. tks -- pica
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