Date: Mon, 25 Nov 2002 23:22:03 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: "kai ouyang" <oykai@msn.com> Cc: Current@FreeBSD.ORG Subject: Re: about GEOM 'geoms' chain question Message-ID: <82092.1038262923@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 25 Nov 2002 11:58:53 %2B0800." <F5bUCwBp9evGMVJ7Anv00003d37@hotmail.com>
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In message <F5bUCwBp9evGMVJ7Anv00003d37@hotmail.com>, "kai ouyang" writes: >If we add a partition 'da0s1h' to the box, when we excute the g_attach() >function, >it will call redo_rank(). My viewpoint is that the 'DEV'(da0s1h) should >been added between 'Sda0' and 'Mda1'. Based my understanding on >'redo_rank', this function will change all the 'rank' of the elements on >the chain, right? >'ad1', 'ad2' and their branches is irrelevant to 'ad0', why their rank must >change? The "rank" number is used to detect loops in the topology. You may want to browse the slides from my GEOM tutorial at EuroBSDCon: http://2002.eurobsdcon.org/papers/ -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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