Date: Fri, 9 May 2008 14:43:08 +0200 From: Joerg Sonnenberger <joerg@britannica.bec.de> To: freebsd-hackers@freebsd.org Subject: Re: Adding .db support to pkg_tools Message-ID: <20080509124308.GA596@britannica.bec.de> In-Reply-To: <op.uavxx8ip2n4ijf@duckjen.nextgentel.no> References: <op.uavxx8ip2n4ijf@duckjen.nextgentel.no>
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On Fri, May 09, 2008 at 01:52:46PM +0200, Anders Nore wrote: > I'm working on adding .db support to the pkg_tools( i.e. pkg_add, pkg_info, > etc. ) as part of SoC 2008. The database api used is BerkeleyDB that comes > with the base system (/usr/src/include/db.h). BerkeleyDB is not you're > typical relational db, and can only save key/value pairs. The way I'm > thinking of storing information to the .db is to name the keys as the > directory names in /var/db/pkg. And save the +* files in the directories to > the value element in the db, separated with a special character or similar. As one of the persons hacking on pkg_install in pkgsrc/NetBSD, I would *strongly* advisy you against storing the files only in a bdb file. The change of major and complete corruption with bdb185 is high, consider pulling the plug in the middle of a long update. Secondly, I would also advisy against just storing all meta data in a single key/value pair. For example, +CONTENTS can be extremely large. Check texmf for a good example. Joerg
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