From owner-freebsd-current@freebsd.org Tue Oct 4 19:27:32 2016 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 8FA1AAF57B5 for ; Tue, 4 Oct 2016 19:27:32 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: from mail-wm0-x22c.google.com (mail-wm0-x22c.google.com [IPv6:2a00:1450:400c:c09::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 248D7E77 for ; Tue, 4 Oct 2016 19:27:31 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: by mail-wm0-x22c.google.com with SMTP id p138so230874467wmb.1 for ; Tue, 04 Oct 2016 12:27:31 -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; bh=xD0MHZupERpeZVDOzVkA0vwa4DDanyUBXAjtPctcC08=; b=cDb9uzxQmfpH+Fj/5knTzlcTBq+lZsSnDetv/42WM84sQ4+/sgjXyn+w6AF9m928H0 oeYFV8vpw+ijaHaVJOPCbTf0iB+O2zTiGtF8Q8J6X3RObrL9cDjjnK8ZW3FQ0TaU5UR0 bv2p3OggFjnRinVj5GC3UOSF3jr1AIyWwLJaX9iTlqpCBWlhnePQnJMeIr47u1zB0hmj 6p7nEmNOhflz7uybVkYTboGf1pvgRXmCdpo/p4JbfBxxtSBUAaeetsqKD2Ji/r30RlJx MvWvgC3HHDhY942sXwlVfRnEhO+ahPojo5LmX2sO3LPWlWsQvxG5BtIMD5HTfCXX3Nnk 8K5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to; bh=xD0MHZupERpeZVDOzVkA0vwa4DDanyUBXAjtPctcC08=; b=MoHysIUQbexI34IDM5I0dgkQZ6GNJkDSmqri5n4J9dNVzCHYrMa7/J70EIQXvpfBNP GOAn5YL11NlloFrd2J7BQd1uJPNRSGFCfkRo5uV5sAp4vnIyAxNrlY/xExRXjLxAuCRV EyOIEQebk6MG1HDluUntgt3ti0qkLPb0owOposLQT0QDSo8uYa6/3KKYPJddaVU9qBtH ZpZTdskklfehPAeLs7nRK+UfjMNQv945/yTEJxvEP+n+M46qpb965mneboK27f0IprDC 9r5GknxxryMllZkxHhjHfuBzU16XSl4QKds4PLJq5bQ9ZdU0cnRKWpjkCpiwePTRKW4w 8JKQ== X-Gm-Message-State: AA6/9Rl3LU+FMi4Fk0+EVW1qzNi+nwrrxffVpP/o3xxF1QXar4NDtlCYoV99VsdSvBxsy47p X-Received: by 10.28.212.129 with SMTP id l123mr18102962wmg.22.1475609249932; Tue, 04 Oct 2016 12:27:29 -0700 (PDT) Received: from [10.10.1.58] ([185.97.61.26]) by smtp.gmail.com with ESMTPSA id ce6sm5010055wjc.27.2016.10.04.12.27.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Oct 2016 12:27:29 -0700 (PDT) Subject: Re: Destroy GPT partition scheme absolutely, how? To: freebsd-current@freebsd.org References: <20160926150109.0d0d793e@hermann> <1785064.lgVzRW13Wf@ralph.baldwin.cx> <16661613.eI4FiDRTSB@ralph.baldwin.cx> From: Steven Hartland Message-ID: <3f32dbb8-2bab-6bb1-839b-33dd8ab0a1c9@multiplay.co.uk> Date: Tue, 4 Oct 2016 20:27:41 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.23 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, 04 Oct 2016 19:27:32 -0000 CAM already does this, doesn't really help with speed as much as you might think though. On 04/10/2016 19:53, Maxim Sobolev wrote: > For the whole disk destruction, hopefully one day we'd have BIO_DELETE > coalesce code, so that you can batch of lot of operations into handful SATA > commands. I've heard rumours imp@ was doing something along those lines. As > well as SSD disks smart enough to process those requests in the background. > Anyway, just saying. ) >