From owner-freebsd-virtualization@freebsd.org Sun Mar 20 03:13:31 2016 Return-Path: Delivered-To: freebsd-virtualization@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 01FD1AD65AA for ; Sun, 20 Mar 2016 03:13:31 +0000 (UTC) (envelope-from paul@redbarn.org) Received: from family.redbarn.org (family.redbarn.org [IPv6:2001:559:8000:cd::5]) (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 E97117E for ; Sun, 20 Mar 2016 03:13:30 +0000 (UTC) (envelope-from paul@redbarn.org) Received: from [10.1.10.35] (unknown [50.255.33.26]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by family.redbarn.org (Postfix) with ESMTPSA id 1D4C31812B; Sun, 20 Mar 2016 03:13:24 +0000 (UTC) Message-ID: <56EE1550.4060403@redbarn.org> Date: Sat, 19 Mar 2016 20:13:20 -0700 From: Paul Vixie User-Agent: Postbox 4.0.8 (Windows/20151105) MIME-Version: 1.0 To: "Russell L. Carter" CC: freebsd-virtualization@freebsd.org Subject: Re: UFS vs. ZFS inside bhyve hosted on ZFS References: <56ECAFEB.8060305@pinyon.org> <56EE1468.5050503@pinyon.org> In-Reply-To: <56EE1468.5050503@pinyon.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.21 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: Sun, 20 Mar 2016 03:13:31 -0000 Russell L. Carter wrote: > ... I have two bhyve VMs configured > identically, both running r297047, each configured with 15G of RAM and > 3 cpus, verified by examining 'sysctl hw' from within the running > guest. One has the default ZFS install, the other UFS. However, > > # cd /usr/src && make buildworld -j > > after 15 minutes or so freezes the -current-UFS guest with the > following console output: > > root@vm1:~ # ahcich0: Timeout on slot 29 port 0 > ahcich0: is 00000008 cs 00000000 ss 00000000 rs bfffffff tfd 50 serr > 00000000 cmd 0001dd17 > (ada0:ahcich0:0:0:0): WRITE_FPDMA_QUEUED. ACB: 61 40 70 dc 3a 40 00 00 > 00 00 00 00 > (ada0:ahcich0:0:0:0): CAM status: Command timeout > (ada0:ahcich0:0:0:0): Retrying command two questions: why ada rather than vtblk? is the host's backing store made with 'zfs create -V', or is it 'truncate'? -- P Vixie