Date: Tue, 23 Jul 1996 15:08:20 -0400 (EDT) From: "Amir Y. Rosenblatt" <amir@neuron.net> To: rgrimes@GndRsh.aac.dev.com (Rodney W. Grimes) Cc: amir@neuron.net, freebsd-current@freebsd.org Subject: Re: SCSI errors and repeated panics Message-ID: <199607231908.PAA01110@prozac.neuron.net> In-Reply-To: <199607222102.OAA19362@GndRsh.aac.dev.com> from "Rodney W. Grimes" at Jul 22, 96 02:02:19 pm
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> In your configuration it _must_ be set to c) above... see the diagrams > in the Adaptec manual.... My termination setup is as dictated by the manual. > Humm... I suspect that the HP C1533 DAT drive has active terminators, > ie the resistor value will be 110 ohms, and the NEC CD-ROM is using > passive termination, ie the resitor value will be 220/330 ohm. I highly > recommend (and the SCSI-II spec just recommends) that you use active > termination with Fast SCSI-II. OK -- this morning I switched the DAT drive and the CD-ROM's places in the chain so the DAT drive was at the end and adjusted the termination settings on both accordingly. Then my logs show the following: ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@Jul 23 09:24:28 prozac /kernel: sd0(ahc0:0:0): timed out in dataout phase, SCSISIGI == 0x0 Jul 23 09:24:29 prozac /kernel: ahc0: Issued Channel A Bus Reset #2. 2 SCBs aborted Jul 23 09:24:29 prozac /kernel: ahc0: Issued Channel A Bus Reset #2. 2 SCBs aborted Jul 23 09:24:29 prozac /kernel: es:3 Jul 23 09:24:29 prozac /kernel: es:3 Jul 23 09:24:29 prozac /kernel: sd0(ahc0:0:0): NOT READY asc:4,1 Jul 23 09:24:29 prozac /kernel: sd0(ahc0:0:0): NOT READY asc:4,1 Jul 23 09:24:29 prozac /kernel: sd0(ahc0:0:0): Logical unit is in process of be coming ready field replaceable unit: 2 Jul 23 09:24:29 prozac /kernel: sd0(ahc0:0:0): Logical unit is in process of be coming ready field replaceable unit: 2 etc... for about 5 minutes -- then nothing in the logfile until 4 hours later: Jul 23 09:24:48 prozac /kernel: , retries:4 Jul 23 09:24:48 prozac /kernel: , retries:4 Jul 23 13:53:18 prozac /kernel: mode = 0100600, inum = 23201, fs = /var Jul 23 13:53:18 prozac /kernel: mode = 0100600, inum = 23201, fs = /var Jul 23 13:53:18 prozac /kernel: panic: ffs_valloc: dup alloc Jul 23 13:53:18 prozac /kernel: panic: ffs_valloc: dup alloc Jul 23 13:53:19 prozac /kernel: Jul 23 13:53:19 prozac /kernel: Jul 23 13:53:19 prozac /kernel: syncing disks... 10 9 5 FreeBSD 2.2-CURRENT #0: Sun Jul 21 22:24:59 EDT 1996 And a reboot which lect it sitting until I could run home to fsck all the partitions. I have since disconnected the cd-rom drive altogether. Any further suggestions? It's getting muy frustrating -- any and all ideas are welcome. -Amir
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