From owner-freebsd-current@freebsd.org Tue Jan 31 23:44:17 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6F73ECCAE48 for ; Tue, 31 Jan 2017 23:44:17 +0000 (UTC) (envelope-from arcade@b1t.name) Received: from mailman.ysv.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 5BA8CAE5 for ; Tue, 31 Jan 2017 23:44:17 +0000 (UTC) (envelope-from arcade@b1t.name) Received: by mailman.ysv.freebsd.org (Postfix) id 5844CCCAE47; Tue, 31 Jan 2017 23:44:17 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 56444CCAE46 for ; Tue, 31 Jan 2017 23:44:17 +0000 (UTC) (envelope-from arcade@b1t.name) Received: from limbo.b1t.name (limbo.b1t.name [78.25.32.206]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A7A23AE4 for ; Tue, 31 Jan 2017 23:44:15 +0000 (UTC) (envelope-from arcade@b1t.name) Received: from [172.29.1.53] (probe.42.lan [172.29.1.53]) by limbo.b1t.name (Postfix) with ESMTPSA id 623757D for ; Wed, 1 Feb 2017 01:44:09 +0200 (EET) Subject: Re: gptzfsboot grew a lot after skein support was added; need knob to control bloat References: <444df1a4-1f27-49a8-6fa6-81f5853e6d80@freebsd.org> <20170127173338.wv6dul7zhxaaw4f4@mutt-hardenedbsd> From: Volodymyr Kostyrko To: "current@freebsd.org" Message-ID: Date: Wed, 1 Feb 2017 01:44:06 +0200 User-Agent: Mozilla/5.0 (X11; DragonFly x86_64; rv:49.0) Gecko/20100101 Firefox/49.0 SeaMonkey/2.46 MIME-Version: 1.0 In-Reply-To: <20170127173338.wv6dul7zhxaaw4f4@mutt-hardenedbsd> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Wed, 01 Feb 2017 02:38:18 +0000 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Jan 2017 23:44:17 -0000 Shawn Webb wrote: > On Fri, Jan 27, 2017 at 12:30:17PM -0500, Allan Jude wrote: >> On 2017-01-27 12:05, Warner Losh wrote: >>> On Fri, Jan 27, 2017 at 12:34 AM, Toomas Soome wrote: >>>> >>>>> On 27. jaan 2017, at 1:40, Ngie Cooper (yaneurabeya) wrote: >>>>> >>>>> Hi, >>>>> I tried upgrading one of my workstations and unfortunately the freebsd-boot partition is too small (I follow manpage directions, exactly, and those seem to be too small as of 10.3-RELEASE timeframe), and I don???t have enough space or ability to resize the partition and make it bigger. So, I???m in need of a build knob to control the bloat, and/or having an alternative boot loader without geli/skein/crypto support compiled in. Would you be opposed to the work? >>>>> Thanks, >>>>> -Ngie >>>> >>>> >>>> I do agree that since the geli knob is already there, it may do. Of course we also can think of additional knobs, but there is an issue - it wont help just to exclude some files, the additional features also do sit in the code, so the replacement stubs will be needed, also testing them all over will take some time. And the preprocessor spaghetti really is nasty thing to deal with;) >>>> >>>> And then there is another issue (partly why I did the feature support in first place) - as the kernel does not block user from enabling the features, the user can end up facing non-bootable setup which is also not good, as user is using perfectly legal options, and still the whole thing is just rendered unusable??? >>> >>> I'm curious why you can't find the space for a bigger partition? >>> Almost all drives these days are partitioned with a little wasted >>> space, and that wasted space should be more than enough to cover us >>> here. Also, most drives have a swap partition that can be shrunk a >>> trivial amount to get space for this... >>> >>> Warner >>> >> >> I need to do some testing to make a recipe that works for it, but the >> other option is to use the ZFS bootcode area. >> >> ZFS it self, reserves something like 3.5 mb of space in the ZFS >> partition, for boot code. This is how we boot ZFS on MBR. >> >> It should be possible to use this on GPT as well, we just don't. > > In the future, maybe it'd be a good idea for the installer to leave > more space (a few MB, perhaps?) between the freebsd-boot and > freebsd-swap partitions? At least, for ZFS installs. This would do anything. If you have swap after the boot partition you always can drop the swap, make larger boot and create the swap back on the free space. -- Sphinx of black quartz judge my vow.