From owner-freebsd-virtualization@FreeBSD.ORG Tue Jun 2 16:17:26 2015 Return-Path: Delivered-To: freebsd-virtualization@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 03CF24FB; Tue, 2 Jun 2015 16:17:26 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 1D98416B9; Tue, 2 Jun 2015 16:17:24 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id TAA26294; Tue, 02 Jun 2015 19:17:22 +0300 (EEST) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1YzosU-0002c2-G0; Tue, 02 Jun 2015 19:17:22 +0300 Message-ID: <556DD6EE.3050104@FreeBSD.org> Date: Tue, 02 Jun 2015 19:16:46 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Peter Grehan CC: freebsd-virtualization@FreeBSD.org Subject: Re: bhyve: bhyveload, bhyve, bhyvectl --destroy References: <556D9163.1080704@FreeBSD.org> <556DC2FE.1000308@freebsd.org> In-Reply-To: <556DC2FE.1000308@freebsd.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Jun 2015 16:17:26 -0000 On 02/06/2015 17:51, Peter Grehan wrote: > Hi Andriy, > >> I am very new to bhyve, so sorry if I am asking something silly or obvious. >> I am using bhyve to speed up my testing and it seems that each time I need to >> restart a VM I need to go through the cycle of destroying it with bhyvectl >> --destroy, then re-loading a kernel with bhyveload and then actually booting the >> VM with bhyve. It seems that I have to do this even if I don't change th kernel >> between reboots. My first naive impression was that the point of bhyveload was >> to load the kernel once. Seems it ain't so? > > bhyveload does the job of what BIOS/boot0/1/2/loader would do on real h/w, so > it has to be executed each time on restart. > > One optimization to the cycle you mentioned is that bhyvectl --destroy only has > to be done when the VM is no longer needed i.e you can loop with bhyveload/bhyve. I see now. Thank you very much! BTW, and probably you are already aware of this, the documentation could use some work :-) I noticed at least the following: - bhyvectl is not documented - bhyve(8) and bhyveload(8) refer to vmm(4), which does not exist - bhyveload(8) does not mention that -d can be used multiple times - bhyve(8) has at least one incorrect reference to bhyveload(*4*) - bhyve(8) mentions vmnet - does that exist? But these are very minor things. bhyve rules :) -- Andriy Gapon