Date: Wed, 24 Sep 1997 14:17:27 -0500 (CDT) From: "Douglas K. Rand" <rand@aero.und.edu> To: freebsd-scsi@freebsd.org Subject: Target Busy errors w/XP34300W & AH2940 Message-ID: <199709241917.OAA02649@dev-null.aero.und.edu>
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I've been getting some reoccuring errors with Quantum XP34300W disk drives on an Adaptec 2940 controller under 2.2.2-RELEASE. It started on one disk, so I called Quantum and returned it. 2 days after shipping it, the other disk in the machine started reporting the same errors. The replacement drive came in earlier this week and immediately started with the same problems. After scanning the archives folks said that heat could be the cause as well as bad SCSI cables. I'm on my third cable, and with the new drive it displayed the problem as soon as I got the system booted. I also don't think its the drives, not with three showing the exact same problems. The error usually manifests itself with dumps of the file system, but fsck can also cause it. As can iozone. Using "iozone raw=/dev/sd0a" (or on any other partition) immediately causes the errors, where as iozone to a file or fsck or dump only sometimes cause the problem. Here are the errors: sd0(ahc0:0:0): Target Busy sd0(ahc0:0:0): SCB 0x2 - timed out in datain phase, SCSISIGI == 0x44 SEQADDR = 0x49 SCSISEQ = 0x12 SSTAT0 = 0x7 SSTAT1 = 0x2 sd0(ahc0:0:0): abort message in message buffer sd0(ahc0:0:0): SCB 0x1 - timed out in datain phase, SCSISIGI == 0x54 SEQADDR = 0x49 SCSISEQ = 0x12 SSTAT0 = 0x7 SSTAT1 = 0x2 ahc0: Issued Channel A Bus Reset. 2 SCBs aborted Clearing bus reset Clearing 'in-reset' flag sd0(ahc0:0:0): no longer in timeout ahc0: target 0 using 16Bit transfers sd0(ahc0:0:0): UNIT ATTENTION asc:29,2 , retries:3 ahc0: target 0 synchronous at 10.0MHz, offset = 0x8 -- Douglas K. Rand rand@aero.und.edu System/Network Administrator Scientific Computing Center -- UND Aerospace Office: +1 701 777 2801 University of North Dakota FAX: +1 701 777 2940 Box 9022, Grand Forks ND 58202-9022 echo '[q]sa[ln0=aln256%Pln256/snlbx]sb3135071790101768542287578439snlbxq'|dc
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