On 09/12/2012 07:32 PM, Mohsen Saeedi wrote: > Hi > I want to know, we are force to install one windows per user? does spice > can provide a multi remote connection to a single windows XP machine? > I want to install one windows XP as virtual desktop and then share it > with more than one users.is it possible in now or in the futures? > Thanks > > > ______________________________**_________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/**mailman/listinfo/users<http://lists.ovirt.org... > > adding spice-devel

On 09/13/2012 07:52 AM, Mohsen Saeedi wrote: > Thanks itamar > Can you tell me when is it available? Is it available on development > versions? not sure, hence why i cc'd spice-devel for info > Best regards > > On Sep 13, 2012 1:14 AM, "Itamar Heim" <iheim(a)redhat.com > <mailto:iheim@redhat.com>> wrote: > > On 09/12/2012 07:32 PM, Mohsen Saeedi wrote: > > Hi > I want to know, we are force to install one windows per user? > does spice > can provide a multi remote connection to a single windows XP > machine? > I want to install one windows XP as virtual desktop and then > share it > with more than one users.is <http://users.is> it possible in now > or in the futures? > Thanks > > > _________________________________________________ > Users mailing list > Users(a)ovirt.org <mailto:Users@ovirt.org> > http://lists.ovirt.org/__mailman/listinfo/users > <http://lists.ovirt.org/mailman/listinfo/users> > > > adding spice-devel > _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users

> Hi Mohsen, > > multiple sessions to the single VM are not on the roadmap. There is > experimental multi-client support but it is to make more users see > the > same session. Moshen, I misunderstood. In this case, I guess I don't actually see how we could fix your problem without circumventing any mechanism that windows has to count license users. Please ignore my lengthy email, it won't help you at all. Alon

On Thu, 2012-09-13 at 20:16 +0430, Mohsen Saeedi wrote: > > > > John A. Sullivan III <jsullivan(a)opensourcedevel.com&gt; wrote on Thu, 13 > Sep 2012 08:38:11 -0400: >> On Thu, 2012-09-13 at 08:06 -0400, Alon Levy wrote: >>>> Hi Mohsen, >>>> >>>> multiple sessions to the single VM are not on the roadmap. There is >>>> experimental multi-client support but it is to make more users see >>>> the >>>> same session. >>> Moshen, >>> >>> I misunderstood. In this case, I guess I don't actually see how we could fix your problem without circumventing any mechanism that windows has to count license users. >>> >>> Please ignore my lengthy email, it won't help you at all. >>> >>> Alon > You can use some recipe for get ridding windows XP RDP limitation: > http://www.petri.co.il/multiple-remote-desktop-sessions-on-windows-xp-sp3... > I think the problems are more legal than technical. From the above link: "However, be warned. Before you begin, I need to warn you that patching the file and allowing more than one concurrent Remote Desktop session will violate a few lines in the Windows XP EULA. Proceed with caution and at your own risk." >> <snip> >> We are actually quite interested in something like this. In effect, it >> is RDS but replaces the RDP protocol with SPICE for the advantages SPICE >> brings. >> >> We have also been toying with the idea of using KVM/KSM to move to a >> single server per user. This would provide much greater isolation and >> non-repudiation but we are concerned about the overhead of KVM on the >> KVM host and deduplication on the SAN. Thanks - John > I think so, spice has experimental feature for multiple client to > single windows XP now. is it true?? > and what is the details for idea of using KVM/KSM to move to a single > server per user? I didn't understand it very well. > Thanks This is something we are able to do splendidly well with VServer and X2Go (an NX implementation). With the VServer hashification feature, I can have 400 VMs on a host and only take one VM's worth of space for system files. Moreover, all instances in memory only take the space of one instance. Thus, we get deduplication and KSM almost for free. Because the additional overhead is so minuscule (minimal memory and disk and almost no virtualization overhead since it is a container technology instead of a hypervisor), and because there are no licensing issues for our Linux desktops, it makes sense to give each user a dedicated VM. Not only does that give us excellent isolation from errant processes but it also means (because of the details of our implementation) that each user has a consistent IP address allowing us to correlate network events with specific users. In some Windows licensing models, there is no cost differential between individual workstations and individual VMs. In that model, we are investigating the same scenario, viz., a single VM per user. However, since we cannot use VServer for Windows guests, we either need to look at Virtuozzo or produce the same results with KVM/KSM/dedupe. We suspect that is much more resource intensive than it is with VServer. Whatever model we choose, we then need a transport protocol and, as SPICE is refined especially in its handling of WAN video, we are quite interested in using it rather than RDP for transport. I hope that clarifies it. Thanks - John _______________________________________________ Spice-devel mailing list Spice-devel(a)lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/spice-devel

John A. Sullivan III píše v Čt 13. 09. 2012 v 12:36 -0400: > On Thu, 2012-09-13 at 20:16 +0430, Mohsen Saeedi wrote: > > > > > > > > John A. Sullivan III <jsullivan(a)opensourcedevel.com&gt; wrote on Thu, 13 <snip>> > > > > > We have also been toying with the idea of using KVM/KSM to move to a > > > single server per user. This would provide much greater isolation and > > > non-repudiation but we are concerned about the overhead of KVM on the > > > KVM host and deduplication on the SAN. Thanks - John > > I think so, spice has experimental feature for multiple client to > > single windows XP now. is it true?? > > and what is the details for idea of using KVM/KSM to move to a single > > server per user? I didn't understand it very well. > > Thanks > This is something we are able to do splendidly well with VServer and > X2Go (an NX implementation). With the VServer hashification feature, I > can have 400 VMs on a host and only take one VM's worth of space for > system files. oVirt (RHEV) templates will do the same for you.

> Moreover, all instances in memory only take the space of > one instance. Thus, we get deduplication and KSM almost for free. oVirt (RHEV) runs KSM only when the host memory gets fuller but I seem to remember that guys were able to have high 1000's of % of memory overcommit ratios

BTW, how does VServer implement its memory sharing, isn't it KSM internally too?

> Because the additional overhead is so minuscule (minimal memory and disk > and almost no virtualization overhead since it is a container technology > instead of a hypervisor), and because there are no licensing issues for > our Linux desktops, it makes sense to give each user a dedicated VM. > Not only does that give us excellent isolation from errant processes but > it also means (because of the details of our implementation) that each > user has a consistent IP address allowing us to correlate network events > with specific users. in oVirt, your guest systems have stable MAC address so with properly configured DHCP/DNS, you'd get the same. David

On 09/14/2012 03:28 PM, John A. Sullivan III wrote: ... >>> > > Moreover, all instances in memory only take the space of >>> > >one instance. Thus, we get deduplication and KSM almost for free. >> > >> >oVirt (RHEV) runs KSM only when the host memory gets fuller but I seem >> >to remember that guys were able to have high 1000's of % of memory >> >overcommit ratios > I have heard rumors of high CPU utilization with KSM but we have not > experimented enough with it ourselves to know. Is that an issue? ksm takes cpu, but servers today are loaded with cores, but memory is still the expensive part. today we configure ksm to kick in only when memory is ~80%, which is when you'd usually be willing to pay the price of one of your cores spending some time on ksm, then the memory congestion on the host / losing memory overcommit.

Thanks. we want to develope spice for multiple concurrent spice console on single OS. for example, we want to use windows XP as single VM for multiple users. we want to develop it as spice feature. is it possible? any help or idea? shall we work on that experimental feature?

Thanks. Alon Levy <alevy(a)redhat.com&gt; wrote on Thu, 13 Sep 2012 05:47:37 -0400 (EDT): On 09/12/2012 07:32 PM, Mohsen Saeedi wrote: Hi I want to know, we are force to install one windows per user? does spice can provide a multi remote connection to a single windows XP machine? I want to install one windows XP as virtual desktop and then share it with more than one users.is it possible in now or in the futures? Thanks Thanks for the interest. There is no support for multiple client connections using spice protocol. There is only experimental known buggy support that still needs more work. There is no concrete plan when that work will happen. _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users adding spice-devel _______________________________________________ Spice-devel mailing list Spice-devel(a)lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/spice-devel

Hi I want to know, we are force to install one windows per user? does spice can provide a multi remote connection to a single windows XP machine? I want to install one windows XP as virtual desktop and then share it with more than one users.is it possible in now or in the futures?

Thanks _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users