From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel De Graaf Subject: Re: Any plan to support disk driver domain? Date: Thu, 04 Apr 2013 10:23:22 -0400 Message-ID: <515D8CDA.3050302@tycho.nsa.gov> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: "G.R." Cc: =?ISO-8859-1?Q?Roger_Pau_Mon?= =?ISO-8859-1?Q?n=E9?= , xen-devel List-Id: xen-devel@lists.xenproject.org On 04/04/2013 06:26 AM, G.R. wrote: > Hi developers, > I'm currently running a PVHVM freeNAS domU to serve storage (SATA > controller passed-through) to all other domUs. However, some issues are > observed in the network / NFS performance for the NAS domU. > I noticed that there is a blkback driver in freebsd which is documented as > capable to export disk to other domains, which looks very promising. > However, the wiki says that disk driver domain is not supported (at least > for now). > > I wonder if there is any plan to support such disk driver domain? It'll be > a great feature for my use case. > > Thanks, > Timothy > > I have submitted a patch adding libxl support for block backend domains - the latest version is: http://lists.xen.org/archives/html/xen-devel/2013-03/msg01172.html This has been tested with Linux in-kernel blkback; you just have to disable libxl's own hotplug execution option and the default (Linux) hotplug scripts will connect the device. I assume freebsd support can be done similarly, although perhaps it requires a helper in the domU? -- Daniel De Graaf National Security Agency