Date: Fri, 30 Aug 1996 11:05:09 +0000 From: Darius Moos <moos@degnet.baynet.de> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: freebsd-hackers <freebsd-hackers@FreeBSD.org>, FreeBSD-questions <questions@FreeBSD.org> Subject: Re: [Q]: formula for calculating BPI needed Message-ID: <3226CAE5.5DC5@degnet.baynet.de> References: <199608300540.HAA27769@uriah.heep.sax.de>
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Hi Joerg, i think Jonathan is right with the meaning of the commandlineoptions. B -> number of block per file/tape b -> number of KILObytes per block (as the manpage states it) Anyway i think that you are right that B should be 50.000 and not 500.000 as Jonathan wrote it. Darius Moos. email: moos@degnet.baynet.de J Wunsch wrote: > > As Jonathan M. Bresler wrote: > > > trying to use bpi for a DAT tape ;) > > bpi is from the days of 9-track tapes. use B and b instead. > > > > B -- number of dump records > > b -- number of kilobytes per dump record. > > > > for a 2GB tape try 500000 40 > > > > dump Bbf 500000 40 /dev/rst0 <filesystem> > > Are you sure? I'm under the impression that `B' is always measured in > kilobytes. This is from experience, not from the man page. :) (Btw., > you've got one `0' too much anyway.) > > dump 0uBb 2000000 32 <filesystem> > > is what i'm using on DAT. > > -- > 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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