Date: Mon, 05 Nov 2012 03:49:48 -0800 From: "Ronald F. Guilmette" <rfg@tristatelogic.com> To: freebsd-questions@freebsd.org Subject: Re: Questions about dump/restore to/from DVD media Message-ID: <25974.1352116188@tristatelogic.com> In-Reply-To: <20121105051447.6eef32ef.freebsd@edvax.de>
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In message <20121105051447.6eef32ef.freebsd@edvax.de>, Polytropon <freebsd@edvax.de> wrote: >> >The problem is that delegating compression to a "sub-task" would >> >imply that dump cannot precisely adjust its output to match the >> >media size (as the limit is now defined by how good the compression >> >works). >> >> Correct. We have both just said the exact same thing in different ways. >> >> In order to have _compression_ of the dump data _and_ still be able to >> divide the (post-compression) data into nice proper 2KB chunks (as required >> for DVD+/-R writing) the compression step itself would need to be integrated >> into the dump program itself (and then, for symmetry, if for no other >> reason, into restore as well). > >Chunk size _and_ media size matter (as dump would have to "know" >when the media is expected to be "nearly-full" _with_ compression) Correct. We are both still just violently agreeing. Regards, rfg
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