[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Dom0 restartability
On Fri, Apr 30, 2010 at 05:54:37PM +0100, Charlie Smurthwaite wrote: > Am I correct in believing that the majority of IO for all domains passes > through the DOM-0 kernel? > Yes, at the moment dom0 is usually taking care of all the disk/network IO for the guests, aka disk and network backend drivers are in dom0. > I would think that a huge number of IO drivers > would need to move into Xen in order to allow this without severe IO > disruption. Are there methods of disk / network IO that do not rely on > DOM-0? > Yeah, you can use 'Driver domains', to have the disk/net backends in a separate guest. I don't think it makes any sense to have disk/net drivers in Xen hypervisor. It's much easier to run Linux dom0 or Driver Domain to serve the disk/net IO. -- Pasi > Charlie > > On 30 April 2010 17:19, Subbiah Kandasamy (skandasa) > <[1]skandasa@xxxxxxxxx> wrote: > > Thanks Pasi, I am sure there are other things as well. I am looking for > any pointers listing the work done in that area. > > Thanks, > -SK. > -----Original Message----- > From: Pasi Kärkkäinen [mailto:[2]pasik@xxxxxx] > Sent: Thursday, April 29, 2010 5:34 PM > To: Subbiah Kandasamy (skandasa) > Cc: [3]xen-devel@xxxxxxxxxxxxxxxxxxx > Subject: Re: [Xen-devel] Dom0 restartability > > On Thu, Apr 29, 2010 at 04:05:13PM -0700, Subbiah Kandasamy (skandasa) > wrote: > > In today's Xen summit I heard there is some work done on the > > restartability of dom0. Any pointers to what has been done and what > is > > pending and the patches ?. > > > > Restarting dom0 requires for example moving xenstored out of dom0.. > so you don't lose the database when you restart dom0. > > -- Pasi > > _______________________________________________ > Xen-devel mailing list > [4]Xen-devel@xxxxxxxxxxxxxxxxxxx > [5]http://lists.xensource.com/xen-devel > > References > > Visible links > 1. mailto:skandasa@xxxxxxxxx > 2. mailto:pasik@xxxxxx > 3. mailto:xen-devel@xxxxxxxxxxxxxxxxxxx > 4. mailto:Xen-devel@xxxxxxxxxxxxxxxxxxx > 5. http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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