Date: Mon, 20 Mar 1995 23:39:28 -0800 (PST) From: julian@tfs.com (Julian Elischer) To: phk@ref.tfs.com (Poul-Henning Kamp) Cc: fbsd@clem.systemsix.com, hackers@FreeBSD.org, moto@CS.cmu.edu, tinguely@plains.nodak.edu Subject: Re: Problems with 2940 and 950210snap Message-ID: <m0rqyXJ-0003wOC@TFS.COM> In-Reply-To: <199503210550.VAA29551@ref.tfs.com> from "Poul-Henning Kamp" at Mar 20, 95 09:50:47 pm
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>
> > I am closing in on the "restore ..." panics with 4mm DAT
> > drives.
> >
> > Summary:
> >
> > without specific option dump writes (10 * 1024) byte records to
> > tape while restore attempts to read (32 * 1024) byte records from
> > tape. It is something about this read that appears to panic the
> > kernel.
> >
>
> Could you try to use "tcopy /dev/rmt0" to verify the blocksize ?
if we distributed the 'st' utility like we should,
you could run
st -f /dev/nrst0 status
and we could see the mode the device was operating in.
that would tell us a lot about the possible causes..
then you can use the scsi(1) or is that scsi(8) command
to turn on debugging on the tape
and see what it's being asked to do.....
scsi(8) is in current,
I include st(1) here so you can try it out
it should be in the source tree (next to mt(1)) but appears to be missing..
to use the SCSI debugging you need the kernel option SCSIDEBUG.
you would then run
scsi -f /dev/st0ctl.0 -d 15
(and stand back.. there'll be a lot of debug info..)
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# st
# st/Makefile
# st/st.1
# st/st.c
#
echo c - st
mkdir -p st > /dev/null 2>&1
echo x - st/Makefile
sed 's/^X//' >st/Makefile << 'END-of-st/Makefile'
X# $Id: Makefile,v 1.2 1993/11/18 05:05:39 rgrimes Exp $
X
XPROG= st
XMAN1= st.1
X
X.include <bsd.prog.mk>
END-of-st/Makefile
echo x - st/st.1
sed 's/^X//' >st/st.1 << 'END-of-st/st.1'
X.\" Copyright (c) 1981, 1990 The Regents of the University of California.
X.\" All rights reserved.
X.\"
X.\"
X.\" Redistribution and use in source and binary forms, with or without
X.\" modification, are permitted provided that the following conditions
X.\" are met:
X.\" 1. Redistributions of source code must retain the above copyright
X.\" notice, this list of conditions and the following disclaimer.
X.\" 2. Redistributions in binary form must reproduce the above copyright
X.\" notice, this list of conditions and the following disclaimer in the
X.\" documentation and/or other materials provided with the distribution.
X.\" 3. All advertising materials mentioning features or use of this software
X.\" must display the following acknowledgement:
X.\" This product includes software developed by the University of
X.\" California, Berkeley and its contributors.
X.\" 4. Neither the name of the University nor the names of its contributors
X.\" may be used to endorse or promote products derived from this software
X.\" without specific prior written permission.
X.\"
X.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
X.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
X.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
X.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
X.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
X.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
X.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
X.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
X.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
X.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
X.\" SUCH DAMAGE.
X.\"
X.\" @(#)mt.1 6.7 (Berkeley) 7/28/91
X.\"
X.Dd July 28, 1991
X.Dt ST 1
X.Os BSD 4
X.Sh NAME
X.Nm st
X.Nd magnetic tape manipulating program
X.Sh SYNOPSIS
X.Nm st
X.Op Fl f Ar tapename
X.Ar command
X.Op Ar count
X.Sh DESCRIPTION
X.Nm St
Xis used to give commands to a magnetic tape drive.
XBy default
X.Nm st
Xperforms the requested operation once. Operations
Xmay be performed multiple times by specifying
X.Ar count .
XNote
Xthat
X.Ar tapename
Xmust reference a raw (not block) tape device.
X.Pp
XThe tape drive will hold density and blocking parameters until the next
Xunmount. In the case of rst0, this is immediately and is therefore of
Xnot much use with this device. In the case of nrst0 this
Xmay be after several commands when either an offline command is issued or
Xrst0 is openned and closed. If parameters are to be held across
Xunmounts, then they should be made to the control device for each
Xmode.. i.e. the devices with a submode of 3 (minors 3,7,11,15 for example).
XIt is suggested that the operator keep the control device unreadble
Xand unwritable to normal system users, while giving them access to
Xthe non-rewind device (e.g. nrst0) on demand.
X.Pp
XThe available commands are listed below. Only as many
Xcharacters as are required to uniquely identify a command
Xneed be specified.
X.Bl -tag -width "eof, weof"
X.It Cm eof , weof
XWrite
X.Ar count
Xend-of-file marks at the current position on the tape.
X.It Cm fsf
XForward space
X.Ar count
Xfiles.
X.It Cm fsr
XForward space
X.Ar count
Xrecords.
X.It Cm bsf
XBack space
X.Ar count
Xfiles.
X.It Cm bsr
XBack space
X.Ar count
Xrecords.
X.It Cm compress
XSet compression for the mode to type
X.Ar comp
Xwhere 0 is off and 1 is default.
X.It Cm rewind
XRewind the tape
X(Count is ignored).
X.It Cm offline , rewoffl
XRewind the tape and place the tape unit off-line (possibly eject)
X(Count is ignored).
X.It Cm blocksize
XSets the block size characteristics of the openned
Xdevice to value specified in
X.Ar count.
XA 0 means variable sized blocks, and anything else means fixed block,
Xwith blocksize as that of
X.Ar count.
X.It Cm density
XSet the density for the openned device (bits 2,3 of minor number)
X.Ar count
Xdensity code as specified by the SCSI II specification. Valid values
Xare from 0 to 0x17.
X.It The different density codes are as follows:
X0x0 default for device
X.br
X0xE reserved for ECMA
X.br
X
XValue Tracks Density(bpi) Code Type Reference Note
X.br
X0x1 9 800 NRZI R X3.22-1983 2
X.br
X0x2 9 1600 PE R X3.39-1986 2
X.br
X0x3 9 6250 GCR R X3.54-1986 2
X.br
X0x5 4/9 8000 GCR C X3.136-1986 1
X.br
X0x6 9 3200 PE R X3.157-1987 2
X.br
X0x7 4 6400 IMFM C X3.116-1986 1
X.br
X0x8 4 8000 GCR CS X3.158-1986 1
X.br
X0x9 18 37871 GCR C X3B5/87-099 2
X.br
X0xA 22 6667 MFM C X3B5/86-199 1
X.br
X0xB 4 1600 PE C X3.56-1986 1
X.br
X0xC 24 12690 GCR C HI-TC1 1,5
X.br
X0xD 24 25380 GCR C HI-TC2 1,5
X.br
X0xF 15 10000 GCR C QIC-120 1,5
X.br
X0x10 18 10000 GCR C QIC-150 1,5
X.br
X0x11 26 16000 GCR C QIC-320(525?) 1,5
X.br
X0x12 30 51667 RLL C QIC-1350 1,5
X.br
X0x13 1 61000 DDS CS X3B5/88-185A 4
X.br
X0x14 1 43245 RLL CS X3.202-1991 4
X.br
X0x15 1 45434 RLL CS ECMA TC17 4
X.br
X0x16 48 10000 MFM C X3.193-1990 1
X.br
X0x17 48 42500 MFM C X3B5/91-174 1
X.br
X
Xwhere Code means:
X.br
XNRZI Non Return to Zero, change on ones
X.br
XGCR Group Code Recording
X.br
XPE Phase Encoded
X.br
XIMFM Inverted Modified Frequency Modulation
X.br
XMFM Modified Frequency Modulation
X.br
XDDS Dat Data Storage
X.br
XRLL Run Length Encoding
X.br
X
Xwhere Type means:
X.br
XR Real-to-Real
X.br
XC Cartridge
X.br
XCS cassette
X.br
X
Xwhere Notes means:
X.br
X1 Serial Recorded
X.br
X2 Parallel Recorded
X.br
X3 Old format know as QIC-11
X.br
X4 Helical Scan
X.br
X5 Not ANSI standard, rather industry standard.
X.br
X
X.It Cm status
XPrint status information about the tape unit.
XInformation is printed out about the present active parameters and
Xalso the four Operating modes available.
X.El
X.Pp
XIf a tape name is not specified, and the environment variable
X.Ev TAPE
Xdoes not exist;
X.Nm st
Xuses the device
X.Pa /dev/nrst0 .
X.Pp
X.Nm St
Xreturns a 0 exit status when the operation(s) were successful,
X1 if the command was unrecognized, and 2 if an operation failed.
X.Sh ENVIRONMENT
XIf the following environment variable exists, it is utilized by
X.Nm st .
X.Bl -tag -width Fl
X.It Ev TAPE
X.Nm St
Xchecks the
X.Ev TAPE
Xenvironment variable if the
Xargument
X.Ar tapename
Xis not given.
X.Sh FILES
X.Bl -tag -width /dev/rmt* -compact
X.It Pa /dev/rst*
XRaw magnetic tape interface
X.El
X.Sh SEE ALSO
X.\".Xr mtio 4 ,
X.Xr st 4 ,
X.Xr dd 1 ,
X.Xr ioctl 2 ,
X.Xr environ 7
X.Sh HISTORY
XThe
X.Nm st
Xcommand appeared in 386BSD 0.1.
XIt is derived from
X.Xr mt 8
Xand will eventually re-merge with it.
X
X.\" mt.1: mtio(4) missing
END-of-st/st.1
echo x - st/st.c
sed 's/^X//' >st/st.c << 'END-of-st/st.c'
X/*
X * Copyright (c) 1980 The Regents of the University of California.
X * All rights reserved.
X *
X * Redistribution and use in source and binary forms, with or without
X * modification, are permitted provided that the following conditions
X * are met:
X * 1. Redistributions of source code must retain the above copyright
X * notice, this list of conditions and the following disclaimer.
X * 2. Redistributions in binary form must reproduce the above copyright
X * notice, this list of conditions and the following disclaimer in the
X * documentation and/or other materials provided with the distribution.
X * 3. All advertising materials mentioning features or use of this software
X * must display the following acknowledgement:
X * This product includes software developed by the University of
X * California, Berkeley and its contributors.
X * 4. Neither the name of the University nor the names of its contributors
X * may be used to endorse or promote products derived from this software
X * without specific prior written permission.
X *
X * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
X * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
X * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
X * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
X * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
X * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
X * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
X * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
X * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
X * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
X * SUCH DAMAGE.
X */
X
X#ifndef lint
Xchar copyright[] =
X"@(#) Copyright (c) 1980 The Regents of the University of California.\n\
X All rights reserved.\n";
X#endif /* not lint */
X
X#ifndef lint
Xstatic char sccsid[] = "@(#)mt.c 5.6 (Berkeley) 6/6/91";
X#endif /* not lint */
X
X/*
X * mt --
X * magnetic tape manipulation program
X */
X#include <sys/types.h>
X#include <sys/ioctl.h>
X#include <sys/mtio.h>
X#include <fcntl.h>
X#include <stdio.h>
X#include <ctype.h>
X
X#define equal(s1,s2) (strcmp(s1, s2) == 0)
X
Xstruct commands {
X char *c_name;
X int c_code;
X int c_ronly;
X} com[] = {
X { "weof", MTWEOF, 0 },
X { "eof", MTWEOF, 0 },
X { "fsf", MTFSF, 1 },
X { "bsf", MTBSF, 1 },
X { "fsr", MTFSR, 1 },
X { "bsr", MTBSR, 1 },
X { "rewind", MTREW, 1 },
X { "offline", MTOFFL, 1 },
X { "rewoffl", MTOFFL, 1 },
X { "status", MTNOP, 1 },
X { "blocksize", MTSETBSIZ, 0 },
X { "density", MTSETDNSTY, 0 },
X { 0 }
X};
X
Xint mtfd;
Xstruct mtop mt_com;
Xstruct mtget mt_status;
Xchar *tape;
X
Xmain(argc, argv)
X char **argv;
X{
X void usage();
X char line[80], *getenv();
X register char *cp;
X register struct commands *comp;
X
X if (argc > 2 && (equal(argv[1], "-t") || equal(argv[1], "-f"))) {
X argc -= 2;
X tape = argv[2];
X argv += 2;
X } else
X if ((tape = getenv("TAPE")) == NULL)
X tape = DEFTAPE;
X if (argc < 2) {
X usage();
X exit(1);
X }
X cp = argv[1];
X if ((strncmp(cp, "blocksize", strlen(cp)) == 0) && argc < 3 ) {
X usage();
X exit(1);
X }
X if ((strncmp(cp, "density", strlen(cp)) == 0) && argc < 3 ) {
X usage();
X exit(1);
X }
X for (comp = com; comp->c_name != NULL; comp++)
X if (strncmp(cp, comp->c_name, strlen(cp)) == 0)
X break;
X if (comp->c_name == NULL) {
X fprintf(stderr, "st: don't grok \"%s\"\n", cp);
X usage();
X exit(1);
X }
X if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0) {
X perror(tape);
X exit(1);
X }
X if (comp->c_code != MTNOP) {
X mt_com.mt_op = comp->c_code;
X mt_com.mt_count = (argc > 2 ? atoi(argv[2]) : 1);
X if (mt_com.mt_count < 0) {
X fprintf(stderr, "st: negative repeat count\n");
X exit(1);
X }
X if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0) {
X fprintf(stderr, "%s %s %d ", tape, comp->c_name,
X mt_com.mt_count);
X perror("failed");
X exit(2);
X }
X } else {
X if (ioctl(mtfd, MTIOCGET, (char *)&mt_status) < 0) {
X perror("st");
X exit(2);
X }
X status(&mt_status);
X }
X}
X
X#ifdef vax
X#include <vaxmba/mtreg.h>
X#include <vaxmba/htreg.h>
X
X#include <vaxuba/utreg.h>
X#include <vaxuba/tmreg.h>
X#undef b_repcnt /* argh */
X#include <vaxuba/tsreg.h>
X#endif
X
X#ifdef sun
X#include <sundev/tmreg.h>
X#include <sundev/arreg.h>
X#endif
X
X#ifdef tahoe
X#include <tahoe/vba/cyreg.h>
X#endif
X
Xstruct tape_desc {
X short t_type; /* type of magtape device */
X char *t_name; /* printing name */
X char *t_dsbits; /* "drive status" register */
X char *t_erbits; /* "error" register */
X} tapes[] = {
X#ifdef vax
X { MT_ISTS, "ts11", 0, TSXS0_BITS },
X { MT_ISHT, "tm03", HTDS_BITS, HTER_BITS },
X { MT_ISTM, "tm11", 0, TMER_BITS },
X { MT_ISMT, "tu78", MTDS_BITS, 0 },
X { MT_ISUT, "tu45", UTDS_BITS, UTER_BITS },
X#endif
X#if defined(sun)
X { MT_ISCPC, "TapeMaster", TMS_BITS, 0 },
X { MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS },
X#endif
X#ifdef tahoe
X { MT_ISCY, "cipher", CYS_BITS, CYCW_BITS },
X#endif
X#if defined (__386BSD__)
X { MT_ISAR, "Archive/Tandberg?", 0, 0 },
X#endif
X { 0 }
X};
X
X/*
X * Interpret the status buffer returned
X */
Xstatus(bp)
X register struct mtget *bp;
X{
X register struct tape_desc *mt;
X
X printf("Present Mode: Density = 0x%02x, Blocksize = %d bytes\n",
X bp->mt_density, bp->mt_blksiz);
X printf("---------available modes----------\n");
X printf("Mode 0: Density = 0x%02x, Blocksize = %d bytes\n",
X bp->mt_density0, bp->mt_blksiz0);
X printf("Mode 1: Density = 0x%02x, Blocksize = %d bytes\n",
X bp->mt_density1, bp->mt_blksiz1);
X printf("Mode 2: Density = 0x%02x, Blocksize = %d bytes\n",
X bp->mt_density2, bp->mt_blksiz2);
X printf("Mode 3: Density = 0x%02x, Blocksize = %d bytes\n",
X bp->mt_density3, bp->mt_blksiz3);
X
X#ifdef NOTYET
X printf("tape drive: residual=%d\n",
X bp->mt_resid);
X printreg("ds", bp->mt_dsreg, mt->t_dsbits);
X printreg("\ner", bp->mt_erreg, mt->t_erbits);
X putchar('\n');
X#endif
X}
X
X/*
X * Print a register a la the %b format of the kernel's printf
X */
Xprintreg(s, v, bits)
X char *s;
X register char *bits;
X register unsigned short v;
X{
X register int i, any = 0;
X register char c;
X
X if (bits && *bits == 8)
X printf("%s=%o", s, v);
X else
X printf("%s=%x", s, v);
X bits++;
X if (v && bits) {
X putchar('<');
X while (i = *bits++) {
X if (v & (1 << (i-1))) {
X if (any)
X putchar(',');
X any = 1;
X for (; (c = *bits) > 32; bits++)
X putchar(c);
X } else
X for (; *bits > 32; bits++)
X ;
X }
X putchar('>');
X }
X}
Xvoid usage() {
X register struct commands *comp;
X
X fprintf(stderr, "Usage: st [ -f tape ] command [ count ] \n");
X fprintf(stderr, " Where command is one of:\n");
X for (comp=com; comp->c_name != NULL; comp++) {
X fprintf(stderr, " %s\n", comp->c_name);
X }
X fprintf(stderr,"Note that the count argument is required\n");
X fprintf(stderr, "with the \"blocksize\" , and the density setting commands.\n");
X fprintf(stderr, "Note that the count argument is a base 10 number\n");
X}
END-of-st/st.c
exit
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