Date: Mon, 19 Oct 2015 17:08:01 -0700 From: NGie Cooper <yaneurabeya@gmail.com> To: Martin Cracauer <cracauer@cons.org> Cc: Yonas Yanfa <yonas@fizk.net>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Depreciate and remove gbde Message-ID: <CAGHfRMDdEhgUN_Xbw_KkoF_EpPCRn0E1ZXXvX6Ga2NFRKN1gPg@mail.gmail.com> In-Reply-To: <20151019234406.GA88752@cons.org> References: <56237623.5010702@fizk.net> <20151019234406.GA88752@cons.org>
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On Mon, Oct 19, 2015 at 4:44 PM, Martin Cracauer <cracauer@cons.org> wrote: > Yonas Yanfa wrote on Sun, Oct 18, 2015 at 06:36:19AM -0400: >> >> Is there any objection to removing gbde? How many people use gbde? When >> have you used gbde over geli, and why? > > You would exclude all current users from accessing their existing > filesystems or whatever they put into that block device. > > A conversion tool would pretty much be forced to use the current > kernel layers (doing the block chaining in userspace would be > annoying), and it would be fundamentally unsafe to have your > half-converted filesystem on disk in case of an interruption. Plus I > think GELI uses a bigger header so you might fall short by a couple of > bytes and you can't do anything about it on the block level with no > access to the filesystem. > > And people might not have their gbde units accessible right now, it > might be on a laptop in a closet on a different continent. For the number of replies Yonas received saying "no, don't do that -- someone might be using it" -- the reason why Yonas asked the question is valid given the information that was presented. 1. Why are there 2 competing technologies? 2. Is one technologically superior to the other (performance, capability, etc)? 3. Is there a gain/loss for removing gbde? 4. Why is it marked experimental [still]? Thanks! -NGie
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