From owner-freebsd-hackers Fri Aug 30 22:51:05 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id WAA22481 for hackers-outgoing; Fri, 30 Aug 1996 22:51:05 -0700 (PDT) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id WAA22476 for ; Fri, 30 Aug 1996 22:51:01 -0700 (PDT) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id HAA18262; Sat, 31 Aug 1996 07:50:55 +0200 Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id HAA27412; Sat, 31 Aug 1996 07:50:54 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.7.5/8.6.9) id HAA06834; Sat, 31 Aug 1996 07:36:52 +0200 (MET DST) From: J Wunsch Message-Id: <199608310536.HAA06834@uriah.heep.sax.de> Subject: Re: [Q]: formula for calculating BPI needed To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Sat, 31 Aug 1996 07:36:52 +0200 (MET DST) Cc: jmb@freefall.freebsd.org (Jonathan M. Bresler) Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199608302305.QAA05113@freefall.freebsd.org> from "Jonathan M. Bresler" at "Aug 30, 96 04:05:04 pm" X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E X-Mailer: ELM [version 2.4ME+ PL17 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Jonathan M. Bresler wrote: > "B records per volume" what is the capacity of the tape in units of "records". > "b kB per records" what is a "record", the unit of the "B" option. No. `b' is *NOT* the unit of the `B' option: case 'b': /* blocks per tape write */ ntrec = numarg('b', "number of blocks per write", ... case 'B': /* blocks per output file */ blocksperfile = numarg('B', "number of blocks per file", ... I think this makes it clearer than the man page is. The unit of the `B' option is always `blocks', which is `blocks of 1 KB' for dump's purpose. The sole meaning of `b' is to specify how many of these 1 KB blocks should be written at once. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)