Date: Fri, 9 Jun 1995 15:11:07 +0200 (MET DST) From: Michael Ruplitsch <ruplit@fitipc31.tu-graz.ac.at> To: freebsd-bugs@FreeBSD.org Subject: dump having problems with remote tape drive Message-ID: <Pine.BSD.3.91.950609144354.13642B-100000@fitipc31.tu-graz.ac.at>
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Hi,
Today I wanted to use `dump' to backup my hard drive onto a remote scsi tape
drive. dump terminated with the message:
Cannot open output "/dev/rmt/ctapen".
I found out that dump tries to open the remote tape for reading and
writing (by sending "Otape-device\n2\n" to rmt where 2 means O_RDWR)
instead of opening it for writing only (`1' instead of `2'). Is this a bug
or is it a feature of dump?
Michael
P.S.: In case it is a bug here is the patch (to be applied in src/sbin/dump):
-------------------- cut here -----------------------------------------------
*** tape.c.orig Tue May 30 08:08:55 1995
--- tape.c Fri Jun 9 13:16:01 1995
***************
*** 595,601 ****
msg("Dumping volume %d on %s\n", tapeno, tape);
}
#ifdef RDUMP
! while ((tapefd = (host ? rmtopen(tape, 2) :
pipeout ? 1 : open(tape, O_WRONLY|O_CREAT, 0666))) < 0)
#else
while ((tapefd = (pipeout ? 1 :
--- 595,601 ----
msg("Dumping volume %d on %s\n", tapeno, tape);
}
#ifdef RDUMP
! while ((tapefd = (host ? rmtopen(tape, 1) :
pipeout ? 1 : open(tape, O_WRONLY|O_CREAT, 0666))) < 0)
#else
while ((tapefd = (pipeout ? 1 :
-------------------- cut here -----------------------------------------------
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