With a full install of Ultrix there is a utility called itc which will do image tape copies. I have successfully made an image of the Microvax Diag and booted from the copies. It is possible that itc might run in Ultrix compat. mode on netbsd. It is actually a c source code example installed with the examples subsets. On Sat, 16 Mar 2002, Zane H. Healy wrote: --

Doc wrote: You don't need this. All you need is cptape, a nice little tool available from the TUHS archive (under PDP-11/Tools or so). This reads a tape and tells and copies the files into a directory (as file.###) and it tells you the block sizes of each (and writes those into a log file.) Then all you need to do is use sed(1) to create dd(1) commands to write those files back to tape. Works beautifully and was my rescue to get the MDM tape from TK70 to TK50 media. regards -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

On Mon, 18 Mar 2002, Doc wrote: #ifndef lint static char *sccsid = &quot;(a)(#)itc.c 4.1 (ULTRIX) 7/17/90"; #endif lint /************************************************************************ * * * Copyright (c) 1989 by * * Digital Equipment Corporation, Maynard, MA * * All rights reserved. * * * * This software is furnished under a license and may be used and * * copied only in accordance with the terms of such license and * * with the inclusion of the above copyright notice. This * * software or any other copies thereof may not be provided or * * otherwise made available to any other person. No title to and * * ownership of the software is hereby transferred. * * * * The information in this software is subject to change without * * notice and should not be construed as a commitment by Digital * * Equipment Corporation. * * * * Digital assumes no responsibility for the use or reliability * * of its software on equipment which is not supplied by Digital. * * * ************************************************************************/ /* * itc - image tape copy, tape to disk and back out * * itc i /dev/nrmt##{l,m,h} > file * itc o /dev/nrmt##{l,m,h} < file * * This program serves as an example of how to use the Ultrix N-buffered * I/O mechanism to buffer I/O requests to and from a tape device under * Ultrix. The user interface for the N-buffered I/O mechanism is * documented under nbuf(4) and works for any character device provided * that the device driver for the device has all the same routines * implemented and specified in the kernel file conf.c as do all the * Ultrix tape drivers. The symbol "##" above represents a tape drive * device unit number and the {l,m,h} is the density selection of * "l"ow, "m"edium, or "h"igh where applicable. * * Digital Equipment Corporation supplies this software example on * an "as-is" basis for general customer use. Note that Digital * does not offer any support for it, nor is it covered under any * of Digital's support contracts. * */ #include <stdio.h> #include <signal.h> #include <sys/types.h> #include <sys/errno.h> #include <sys/file.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <sys/devio.h> #include <sys/mtio.h> #define BUFAMT 128*512-1 /* Zero based 64 KB */ #define NBUFAMT 8 /* Number of N-buffers */ extern int errno; /* Error number */ main(argc, argv) int argc; char **argv; { int opt; /* Options variable */ int fd; /* File descriptor */ int cnt = NBUFAMT; /* N-buffer count */ int n; /* Amount for I/O */ char *buf[NBUFAMT]; /* N-buffer array */ int eof; /* End-of-file flag */ int cnter = 0; /* Counter */ /* Check to be sure option was given */ if( argc < 3 ) { fprintf( stderr, "Usage:\t itc i /dev/nrmt##{l,m,h} > file\n\t itc o /dev/nrmt##{l,m,h} < file\n" ); exit( 1 ); } /* Save the option */ opt = argv[1][0]; /* Check to see which option and open device */ if(( fd = open( argv[2], opt == 'i' ? 0 : 1 )) < 0 ) { perror( "itc: tape open error" ); exit( 1 ); } /* Determine if we can use n-buffered I/O */ if( ioctl( fd, FIONBUF, &cnt ) < 0 ) { cnt = 0; } /* Allocate buffers if N-buffered I/O is possible */ if( cnt > 0 ) for( n=0; n < cnt; n++ ) buf[n] = (char *)malloc( BUFAMT+1024 ); else buf[0] = (char *)malloc( BUFAMT ); /* Determine which way */ if( opt == 'i' ) { /* Copying from tape to a file */ eof = 0; for( ;; ) { loop: n = read( fd, buf[cnter], BUFAMT ); if( cnt ) { int didread; if( ++cnter == cnt ) { cnter = 0; } errno = 0; didread = ioctl( fd, FIONBDONE, &buf[cnter] ); if( errno != EINVAL ) { n = didread; } else { goto loop; } } if( n < 0 ) { perror( "itc: tape read error" ); exit( 1 ); } /* We encountered a tape mark */ /* Reset to next tape file */ if( n == 0 ) { close( fd ); if( eof ) { break; } else { eof = 1; } /* Skip to next tape file */ if(( fd = open( argv[2], opt == 'i' ? 0 : 1 )) < 0 ) { perror( "itc: tape open error" ); exit( 1 ); } if( cnt && ioctl( fd, FIONBUF, &cnt ) < 0 ) { cnt = 0; } cnter = 0; } else { eof = 0; } write( 1, (char *)&n, sizeof( n ) ); if( n ) { write( 1, buf[cnter], n ); } } } else { int read_len; /* Copying from file to tape */ while( read( 0, (char *)&n, sizeof( n )) == sizeof( n )) { if( n == 0 ) { close( fd ); fd = open( argv[2], 1 ); if( cnt && ioctl( fd, FIONBUF, &cnt ) < 0 ) { cnt = 0; } cnter = 0; } else { int err; if(( read_len = read( 0, buf[cnter], n )) != n ) { perror( "itc: file format error" ); exit( 1 ); } err = write( fd, buf[cnter], n ); if( cnt && ( err >= 0 )) { int didwrite; if( ++cnter == cnt ) { cnter = 0; } errno = 0; didwrite = ioctl( fd, FIONBDONE, &buf[cnter] ); if ( errno != EINVAL ) { err = didwrite; } } if( err < 0 ) { perror( "itc: tape write error" ); exit( 1 ); } } } close( fd ); } } --