Date: Mon, 8 May 2000 10:30:52 +0930 From: Greg Lehey <grog@lemis.com> To: Mike Smith <msmith@FreeBSD.ORG> Cc: Christian Weisgerber <naddy@mips.inka.de>, freebsd-current@FreeBSD.ORG Subject: Re: Undocumented tape devices in pax(1) Message-ID: <20000508103052.H61921@freebie.lemis.com> In-Reply-To: <200005072348.QAA12373@mass.cdrom.com> References: <8f4s5f$1nfa$1@bigeye.rhein-neckar.de> <200005072348.QAA12373@mass.cdrom.com>
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On Sunday, 7 May 2000 at 16:48:36 -0700, Mike Smith wrote: >> Mike Smith <msmith@FreeBSD.ORG> wrote: >> >>> The 'r' prefix for tape devices is entirely unrelated to the 'r' prefix >>> for disk devices. >> >> I'd like to see some backup for this assertion. Historically, BSD >> (up to 4.4) used to have >> >> mt block device, rewinding >> nmt block device, non-rewinding >> rmt character device, rewinding >> nrmt character device, non-rewinding >> >> which leaves little room to doubt. > > Interesting. I've never encountered a tape device to which the buffer > cache was applicable, except for the mythical SunOS swap-to-tape story, > and the 'r' has always been "rewind" for as long as I can remember. I suspect that's an assumption on your part. I think we've come up with enough man pages to support naddy's statement. > We haven't made non-'r' devices since MAKEDEV rev 1.5. For good reasons :-) Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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