Date: Wed, 8 Mar 1995 07:58:33 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: terry@cs.weber.edu (Terry Lambert) Cc: henryk@gaja.ipan.lublin.pl, freebsd-bugs@FreeBSD.org Subject: Re: QIC-80 problem Message-ID: <199503080658.HAA02015@uriah.heep.sax.de> In-Reply-To: <9503071643.AA24708@cs.weber.edu> from "Terry Lambert" at Mar 7, 95 09:43:56 am
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As Terry Lambert wrote: > > > I have a 486/66 with FreeBSD. > > I just bought a QIC 80 streamer and ftp'd an ft filter. > > It works quite well with tar but only with "B" option. > > When i try to use a "z" option for tar it hangs after > > some time. > Precompress the data. > > Since the interface used by floppy tape drives is the floppy disk > controller, and since the floppy disk controller does not have a > buffer (or a detectable one, if you lucked into one of the new > chips that almost no one uses) this means that it is sensitive > in the extreme to missed I/O. [A very long explanation deleted.] Terry, you might sometimes look as well at the recipient address. This one ended up in .pl, so i'm afraid your fine explanation might be a bit hard to understand... (it's even hard to understand for me, even after following this list for a long time now). But speaking of double-buffering, it should be possible to solve the problem by piping it through a program called ``team'', since it does N-buffering. Why did nobody make a FreeBSD port for ``team'' by now? ;-) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)
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