I am not sure you can do it at all, because Windows (then again, I am hardly a Windows expert).
How I would do it on a standalone libvirt/KVM running Windows on "IDE" drives, is to add a secondary volume/disk of type VirtIO, Windows will ask for drivers which I would provide, then power off the VM, change the main disk's type from IDE to VirtIO and Windows will boot it. I do not see how you can do that in ACS. If you find a "live" method of injecting VirtIO drivers in Windows so that they are available for future devices, let me know, I am curious. HTH Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "Jochim, Ingo" <ingo.joc...@bautzen-it.de> > To: "users@cloudstack.apache.org" <users@cloudstack.apache.org> > Sent: Wednesday, 17 June, 2015 15:36:33 > Subject: AW: Storage Performance Windows VM > How do I change that for existing systems? > > Thanks, > Ingo > > -----Ursprüngliche Nachricht----- > Von: Andrija Panic [mailto:andrija.pa...@gmail.com] > Gesendet: Mittwoch, 17. Juni 2015 16:34 > An: users@cloudstack.apache.org > Betreff: Re: Storage Performance Windows VM > > Choose "Windows PV" as the vm type/OS inside acs. Then you will have virtio > hardware inside vm. Make sure you install drivers (Google fedora virtio > drivers) inside Windows, before you switch to virtio "hardware"... > On Jun 17, 2015 4:24 PM, "Jochim, Ingo" <ingo.joc...@bautzen-it.de> wrote: > >> Hi all, >> >> I've got a few Windows machines which had block devices on an NFS share. >> After migration to Ceph the disk performance is really bad. >> The disk shows up as IDE in Windows (before and after). No virtio. >> >> Any idea why it's that bad? Any drivers I need to change? >> >> Thanks for your help. >> Regards, >> Ingo >> > > -- > This email was Virus checked by UTM 9. http://www.sophos.com
