From owner-freebsd-stable@freebsd.org Thu Aug 16 23:21:03 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id AE6E91079B45 for ; Thu, 16 Aug 2018 23:21:03 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4266A7DAD0 for ; Thu, 16 Aug 2018 23:21:03 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: by mail-ed1-x536.google.com with SMTP id r4-v6so3560252edp.9 for ; Thu, 16 Aug 2018 16:21:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=multiplay-co-uk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language; bh=bYB3fnO3XhT36TTJCNAdReg+cEbSFUbDzkqT4ib9C3U=; b=TPDC/hQtrLDd2KGo6j0vZ4/HUF3hFxu6QTL5rsbX/Dg7Z4CPXaxq2DBVm1ooAYHSdn WnEp1TET69CR7d5I0RrTRUKC345StEztlEwdcnRWKF57cdGDCHbFzlkz93f2AttHT2Sh lrIDuVvCZtz74AnOI5Zsaz0pm+69JNCMfAeHe6SQCg9K1QQIFnC+kJUpllLfnJwml3wm wB1kXwadb5fdaMmpNF59w/i4DvfnlLqlI2fJdqan7jVso/eIKQmkgBNmxLIDVGMbDpot Cneo9is1s85VTjO0I1evp4DVgUbzqa4dQT3ZuvXebDZlTpmMwUzOgNVybbhFeawlxImH 3m/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=bYB3fnO3XhT36TTJCNAdReg+cEbSFUbDzkqT4ib9C3U=; b=gFdyvlGO0kOUkXD7N8iZmTqvyXivZJS3mszKDuEpbaVrN5i1MuRRUvgoK46rPrWDvc OQpXAYhTkz/ziTVK6Y8feOGuK7U88VpO1zUOc9tBPHeJ27MkboXuWCCauBmTJjClM1MS NQlROgNWgzNiSd0aFiGnIxT8QL+4sMZ7vu3DzbnSuityJUe1jazN9htKFuR6Tv82BQns DjXuHS0q7tOelk6jHXB73sZTmKZTEMgnLevTNvRPRKUVXkzIRlJuFOzeXh1UZx+u1S0D Ebs0AsldRxT8jC4fy2Ang8aBRDWzRqdnkFFRRH8PPLv6urfvhwNaYvA7tqU0QnA0MRrD u9lg== X-Gm-Message-State: AOUpUlEvyMUbBeGnUpYAp6tYJH1q/qPUstYZkFcQlEYfjE1OtR+Xxzmh KEGH19msda0ntI/BA0aIjDGTvwksEkA= X-Google-Smtp-Source: AA+uWPxQcQzPyAbp5KrNcpQAa3BsA7JD3tMMIWPK/madzS2Ugd0mrtdqxxBtNQEXNDdg6XYb/UqWlQ== X-Received: by 2002:a50:b1bc:: with SMTP id m57-v6mr39500496edd.3.1534461660751; Thu, 16 Aug 2018 16:21:00 -0700 (PDT) Received: from [10.44.128.75] ([161.12.40.153]) by smtp.gmail.com with ESMTPSA id h8-v6sm1075391edi.68.2018.08.16.16.20.59 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 16 Aug 2018 16:20:59 -0700 (PDT) Subject: Re: zfs boot size To: freebsd-stable@freebsd.org References: From: Steven Hartland Message-ID: <469d704c-3635-2da9-39b6-1f25eae384d7@multiplay.co.uk> Date: Fri, 17 Aug 2018 00:21:01 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.27 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Aug 2018 23:21:03 -0000 The recommended size for a boot partition has been 512K for a while. We always put swap directly after it so if a resize is needed its easy without and resilvering . If your pool is made up of partitions which are only 34 block smaller than your zfs partition you're likely going to need to dump and restore the entire pool as it won't accept vdevs smaller than the original.     Regards     Steve On 16/08/2018 23:07, Randy Bush wrote: > so the number of blocks one must reserve for zfs boot has gone from 34 > to 40. is one supposed to, one at a time, drop each disk out of the > pool, repartition, re-add, and resilver? luckily, there are only 16 > drives, and resilvering a drive only takes a couple of days. so we > might be done with it this calendar year. and what is the likelihood we > make it through this without some sort of disaster? > > clue bat, please? > > randy > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"