Date: Sat, 31 Aug 1996 07:36:52 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-hackers@freebsd.org (FreeBSD hackers) Cc: jmb@freefall.freebsd.org (Jonathan M. Bresler) Subject: Re: [Q]: formula for calculating BPI needed Message-ID: <199608310536.HAA06834@uriah.heep.sax.de> In-Reply-To: <199608302305.QAA05113@freefall.freebsd.org> from "Jonathan M. Bresler" at "Aug 30, 96 04:05:04 pm"
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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. ;-)
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