Date: Fri, 23 Apr 2004 23:31:45 -0700 From: Tim Kientzle <kientzle@freebsd.org> To: Don Lewis <truckman@freebsd.org> Cc: current@freebsd.org Subject: Re: Testing Tar (was Re: bad news for bsdtar..) Message-ID: <408A09D1.2090007@freebsd.org> In-Reply-To: <200404240540.i3O5eA7E053079@gw.catspoiler.org> References: <200404240540.i3O5eA7E053079@gw.catspoiler.org>
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Don Lewis wrote: > On 23 Apr, Tim Kientzle wrote: >>Bruce Evans wrote: >> >>>At least the -current version of tar skips reading the >>>data when it is writing to /dev/null. >> >>I wonder why it does that? > > This speeds up Amanda quite a bit. Amanda will run tar with the > --totals option ... to plan the best mixture of full and incremental > backups. Hmmm... How accurate does such information need to be? Getting accurate estimates out of bsdtar could be tricky. (Either bsdtar needs to know a lot more about archive formats than it does right now, or libarchive needs to have a way to export this kind of information.) Tim
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