Date: Sun, 21 Feb 2010 20:52:31 +0800 From: Aiza <aiza21@comclark.com> To: Polytropon <freebsd@edvax.de> Cc: freebsd-questions <questions@freebsd.org> Subject: Re: Dump questions Message-ID: <4B812C8F.40102@comclark.com> In-Reply-To: <20100221110358.9ec8b286.freebsd@edvax.de> References: <4B80ABBA.9000707@comclark.com> <20100221110358.9ec8b286.freebsd@edvax.de>
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Polytropon wrote: > On Sun, 21 Feb 2010 11:42:50 +0800, Aiza <aiza21@comclark.com> wrote: >> 1. Using the -L flag to create a snapshot of the >> live running file system. >> >> Does this mean that a complete copy of the file >> system is written to .snap directory? > > No. The snapshot, quite incorrectly explained, is a saved > delta between the file system on disk at a given state, to > fixate further modifications (that are not included in the > dump, of course). > Sorry, I read your words but have no clue as what you are trying to say with that statement. As i understand 'delta' to mean, the difference in file system content between a point in time 'A' and 'B' some point in time later in the future. Now just what is snapshot recording between point 'A' and 'B' and how does that apply to what dump is going to read and write?
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