From owner-freebsd-virtualization@freebsd.org Sun Mar 20 03:45:08 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 57B8EAD6F0B for ; Sun, 20 Mar 2016 03:45:08 +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 4A012E81 for ; Sun, 20 Mar 2016 03:45:08 +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 E7068181F6; Sun, 20 Mar 2016 03:45:07 +0000 (UTC) Message-ID: <56EE1CC0.9020903@redbarn.org> Date: Sat, 19 Mar 2016 20:45:04 -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> <56EE1550.4060403@redbarn.org> <56EE19E9.7040403@pinyon.org> In-Reply-To: <56EE19E9.7040403@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 03:45:08 -0000 Russell L. Carter wrote: > > > On 03/19/16 20:13, Paul Vixie wrote: >> >> >>> 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? > > No idea. I chose the default UFS selection in the iso installer. > Happy to change it to something better. you're starting your bhyve with a -s that specifies the ahci-hd driver. the guest kernel therefore sees an 'ahcich0' device. if you start bhyve with a -s that specifies the virtio-blk driver, then your guest kernel will see a 'vtblk' device. this may matter, since the kernel timeout you showed was in the ahci driver. i have never used this driver in bhyve. -- P Vixie