Date: Fri, 02 Aug 1996 23:56:49 -0700 From: Mark Smith <msmith@3-cities.com> To: Dan Nelson <dnelson@emsphone.com> Cc: freebsd-questions@FreeBSD.org Subject: Re: DAT problems Message-ID: <3202F831.D69@3-cities.com> References: <199608011729.MAA23363@dan.emsphone.com>
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Dan Nelson wrote: > The same thing happens to me, but I'm using an internal Adaptec 1542CP, > "ARCHIVE Python 25947-XXX 2.49" DAT drive. The lockups occur when > reading tapes written on other drives. I think it's the drive locking > up the SCSI bus, since if I unplug the SCSI cable from the drive, cycle > power on the drive, and plug the SCSI cable back in, the bus frees up. > In the syslog, I get: > > Jul 25 10:34:45 dan /kernel: st0(aha0:3:0): HARDWARE FAILURE asc:44,0 Internal target failure > Jul 25 10:39:57 dan /kernel: st0(aha0:3:0): timed out > Jul 25 10:40:03 dan /kernel: aha0: adapter not taking commands.. frozen?! > (panic/drop to DDB. Reset tape drive, "C"ontinue from DDB, system > continues as usual.) > Dan and others, OK, here's what I found. My system has all my SCSI devices (HDD, CDROM and DAT tape) on a single ribbon cable. I was asking a guy at work about it and he said to check ALL the devices' termination paying special attention to any that have powered termination options on the device. Well, I did and out of the 3 devices, the CDROM has the option and it was enabled. I disabled all terminator power options and the problem went away!! I can now tar to the SCSI tape from the SCSI CDROM while hammering on the SCSI HDD! <G> Life is good! Mark
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