Date: Mon, 10 Aug 2009 22:14:13 -0500 From: Jay Hall <jhall@socket.net> To: Mel Flynn <mel.flynn+fbsd.questions@mailing.thruhere.net> Cc: Roland Smith <rsmith@xs4all.nl>, freebsd-questions@freebsd.org Subject: Re: Backup Size Message-ID: <BAFC2BBB-86CC-480B-9490-D4C0F8CA1E14@socket.net> In-Reply-To: <200908101908.36042.mel.flynn%2Bfbsd.questions@mailing.thruhere.net> References: <6206A242-7226-48E3-8D09-A1D3A651F2A8@socket.net> <20090810170921.GC49364@slackbox.xs4all.nl> <D0D2566C-8912-4F77-BB54-714C7DB4B2D2@socket.net> <200908101908.36042.mel.flynn%2Bfbsd.questions@mailing.thruhere.net>
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> > Difficult. 512 bytes per entry + 1024 (EOF). See man 5 tar. But > since files > will be padded there is some extra overhead. Also, it is hard to > calculate > hard links and sparse files. Tar will handle these correctly (i.e. > preserve > hard links and detect sparse files and try not archive "blocks of > nulls") but > it is hard to calculate the size because of this before the archive > operation > because of this. > -- > Mel Thanks. I have been able to come close, but not exact. Looks like close will have to be good enough. Thanks again. Jayhelp
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