xen April 2007

xen@lists.fedoraproject.org

68 participants
65 discussions

Xen and para-virtualisation
by LIMOGE 24 Apr '07

24 Apr '07

Saclay ce 24 avril 2007 Dear All I need (halas) to run a Windows on my fedora powered workstation. Can anybody tell me if the Xen para-virtualisation tool can really host Windows, and what are the adaptations to be done to get a working one on a machine which doesn't has the Intel VT technology ? Many thanks for your kind informations. Y. Limoge

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Réf. : Re: [Fedora-xen] Xen and para -virtualisation
by jean-paul.pigache＠bull.net 24 Apr '07

24 Apr '07

Yves, Paravirtualization means that the guest OS is modified to be virtualized. To run Windows as a guest OS with Xen, assistance from the processor is needed. An Intel-VT or AMD-V processor is required. JPP Sadique Puthen <xenguy(a)gmail.com> Envoyé par : fedora-xen-bounces(a)redhat.com 24/04/2007 14:25 Pour : yves.limoge(a)cea.fr cc : fedora-xen(a)redhat.com Objet : Re: [Fedora-xen] Xen and para-virtualisation LIMOGE wrote: > Saclay ce 24 avril 2007 > > Dear All > > I need (halas) to run a Windows on my fedora powered workstation. > Can anybody tell me if the Xen para-virtualisation tool can really > host Windows, No. > and what are the adaptations to be done to get a working one on a > machine which doesn't has the Intel VT technology ? Request microsoft to opensource windows code so that we can modify it to work as a paravirtualised guest. > > Many thanks for your kind informations. > Y. Limoge > > -- > Fedora-xen mailing list > Fedora-xen(a)redhat.com > https://www.redhat.com/mailman/listinfo/fedora-xen > -- Fedora-xen mailing list Fedora-xen(a)redhat.com https://www.redhat.com/mailman/listinfo/fedora-xen

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FC7 xen status question.
by Naoki 24 Apr '07

24 Apr '07

Howdy, The xen kernel normally lags behind the mainstream fedora, right now it's about a month older : $ rpm -q kernel kernel-xen kernel-2.6.20-1.3071.fc7 kernel-2.6.20-1.3094.fc7 kernel-xen-2.6.20-2925.5.fc7 So I'm wondering if there is a technical reason for this and if the versions will sync before FC7 release? Cheers,

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LVM backed storage
by Adrian Revill 24 Apr '07

24 Apr '07

Hi, I have created a DomU using a logical volume created on the Dom0 called node-image, and i can see it as the device /dev/VolGroup00/node-image When i installed the OS i created a custom disk layout of a single ext3 / partition. (an odd layout, but this is for a diskless client image) I would like to be able to mount the /dev/VolGroup00/node-image on Dom0, but i cannot work out how to create the device nodes for the partition. So i thought i could use the xm attach-block command xm attach-block 0 /dev/VolGroup00/node-image /dev/node-image ro This said it had created the device but i could not see it in /dev on Dom0 Does any one know how i can mount /dev/VolGroup00/node-image partition 1? regards Adrian

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where are disk config docs?
by Tom Horsley 23 Apr '07

23 Apr '07

There are apparently an awful lot of different ways to define disks for VMs, but there are apparently no docs describing them anywhere :-). Where do folks find out how to do all the things I see references to in the mailing lists (xenblk drivers, tap:aio, xvda, I can find millions of hits on google, mostly in patches, but I can't find anything resembling documentation).

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USB2 on XEN
by misi e 23 Apr '07

23 Apr '07

Hello, I have 2 questions, which are interrelated: 1. will USB2 will be soon supported by XEN. 2. is there any project to port the PCI "emulation" to windows, so that PCI cards would be seen in windows domu? tx Misi

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AoE with Xen
by Andy Burns 23 Apr '07

23 Apr '07

I'm considering using AoE with Xen, my setup would be vblade on one FC7 storage server with mdraid over 6x SATA disks, and two xen hosts with FC7 using aoe+aoetools, using eth1 on all servers to a separate VLAN for SAN traffic, eth0 used for normal LAN traffic, all gigabit. I'm wondering does it make more sense to slice up /dev/md1 on the storage server with LVM and then serve multiple /dev/VGxx/LVxx block devices with individual vblade processes using their own AoE shelf/slot ID to individual dom0 (or direct to AoE in domU)? Or to serve the whole /dev/md1 using a single vblade process on the storage server and then use CLVM or GFS on each xen dom0 to slice up a single /dev/etherd/e0.0 in a coordinated way? My thoughts are that using a cluster filesystem would save the hassle of starting/stopping vblade processes whenever resizing LVs and any associated confusion of shelf/slot IDs But I'm not sure of the overhead of cluster filesystems, does DLM only get involved for maintenance operations on LVs, or for all I/O activity? Thoughts welcome from anyone using (or having attempted) either approach ...

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Re: [Fedora-xen] cannot boot into xen kernel
by Yuming Fei 22 Apr '07

22 Apr '07

Here are the flags in the cpuinfo file, looks like the CPU has the PAE support: $ grep pae /proc/cpuinfo flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 mmx fxsr sse up or, maybe I am missing something here? Any helps will be appreciated. Mike Robert Story <rstory-l(a)2006.revelstone.com> wrote: On Sat, 21 Apr 2007 20:44:41 -0700 (PDT) Yuming wrote: YF> After installing xen, I cannot boot into the xen kernel. This is on Insprion 4100 laptop, running Fedora core 6. I seem to recall that FC6 has a PAE kernel, and many/most laptops don't have PAE support in their CPUs. --------------------------------- Ahhh...imagining that irresistible "new car" smell? Check outnew cars at Yahoo! Autos.

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XEN benchmarks
by Kiranjeet Kaur Beniwal 22 Apr '07

22 Apr '07

Hi everybody, Sorry, I am late to answer the email.I was busy with my exams.I will do the benchmark on bare iron. So as soon as I am done with them I will post it on fedora-xen community Kiran Beniwal

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rhel 5 hvm install freezes
by Tom Horsley 22 Apr '07

22 Apr '07

I am trying (mainly for experimentation purposes) to install rhel5 (x86_64) fully virtualized as a guest under Fedora core 6 (x86_64) Dom0. I've got the rhel5 CD images mounted where apache can see them, and I tell the xenguest-install script to use the images/boot.iso file as the install image. I get started fine, tell the installer to use HTTP, point it at the apache server running on Dom0, and it gets a good way through the install, then the virtual video freezes up, the virtual mouse no longer moves, etc. This sound familiar to anyone? Any particular rocks I ought to start looking under for information about what might be going on?

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xen April 2007