Date: Thu, 14 Nov 1996 20:57:01 +0100 (MET) From: Andreas Klemm <andreas@klemm.gtn.com> To: "Justin T. Gibbs" <gibbs@freefall.freebsd.org> Cc: "Alexsandro D. F. Correia" <acorreia@marlin.com.br>, hackers@FreeBSD.org Subject: Re: Problems restoring Backups !!! Message-ID: <Pine.BSF.3.95.961114204739.406A-100000@klemm.gtn.com> In-Reply-To: <199611120426.UAA13829@freefall.freebsd.org>
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Justin,
I tried this patch now:
a)
options AHC_SCBPAGING_ENABLE
options AHC_TAGENABLE
timed out in message 0xf4
issued channel A bus reset 4 SCB's aborted SCSISIGI==0xc6
timedout in message in phase SCSISIGI==0xc6
SEQADDR==0x59
Ordered Tag queued
sd0(....) timed out .... SCSISIGI==0xc6
SEQADDR==0x5a
st0(0:4:0) abort message in message buffer
st0(0:4:0) timedout in message in phase ...
b)
options AHC_TAGENABLE
Here trouble, too, although an SCSI BUS Reset is done.
But, if you access the tape once more doing a mt status only
DDB is called...
...
... timed out in message in phase
Bus reset Unit ...
st0(0:4:0) Unix attention ... asc:25,0
...
... Ordered tag sent
> Index: i386/scsi/aic7xxx.c
> ===================================================================
> RCS file: /usr/cvs/src/sys/i386/scsi/aic7xxx.c,v
> retrieving revision 1.85
> diff -c -r1.85 aic7xxx.c
> *** aic7xxx.c 1996/11/11 05:24:44 1.85
> --- aic7xxx.c 1996/11/12 04:19:04
> ***************
> *** 1206,1226 ****
> if (xs->error == XS_NOERROR)
> xs->error = XS_DRIVER_STUFFUP;
> break;
> case SCSI_BUSY:
> xs->error = XS_BUSY;
> sc_print_addr(xs->sc_link);
> printf("Target Busy\n");
> - break;
> - case SCSI_QUEUE_FULL:
> - /*
> - * The upper level SCSI code will someday
> - * handle this properly.
> - */
> - printf("Queue Full\n");
> - /*
> - * XXX requeue this unconditionally.
> - */
> - STAILQ_INSERT_HEAD(&ahc->waiting_scbs, scb, links);
> break;
> default:
> sc_print_addr(xs->sc_link);
> --- 1206,1242 ----
> if (xs->error == XS_NOERROR)
> xs->error = XS_DRIVER_STUFFUP;
> break;
> + case SCSI_QUEUE_FULL:
> + if (scb->hscb->control & TAG_ENB) {
> + /*
> + * The upper level SCSI code in 3.0
> + * handles this properly...
> + */
> + struct scsi_link *sc_link;
> +
> + sc_link = xs->sc_link;
> + if (sc_link->active > 2
> + && sc_link->opennings != 0) {
> + /* truncate the opennings */
> + sc_link->opennings = 0;
> + sc_print_addr(sc_link);
> + printf("Tagged openings reduced to "
> + "%d\n", sc_link->active);
> + }
> + /*
> + * XXX requeue this unconditionally.
> + */
> + STAILQ_INSERT_TAIL(&ahc->waiting_scbs, scb,
> + links);
> + break;
> + }
> + /* Else treat as if it is a BUSY condition */
> + scb->hscb->status = SCSI_BUSY;
> + /* Fall Through... */
> case SCSI_BUSY:
> xs->error = XS_BUSY;
> sc_print_addr(xs->sc_link);
> printf("Target Busy\n");
> break;
> default:
> sc_print_addr(xs->sc_link);
>
andreas@klemm.gtn.com /\/\___ Wiechers & Partner Datentechnik GmbH
Andreas Klemm ___/\/\/ Support Unix -- andreas.klemm@wup.de
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