similar to: CentOS-virt Digest, Vol 76, Issue 3

The subject says it all. I got CentOS 6.4 installed and then converted it to boot into the Xen kernel, using the C6.4 system as its dom0. But now I'm uncertain how to put a C6.4 domU on the result. Which tools are recommended?

I have seen those documents, I did not see anything that indicates how _automatic_ bridge configuration could be enabled with xl. For my specific set up I have two bridges (xenbr0 -> peth0 & xenbr1 -> peth1). If I have to configure this manually with ifcfg scripts I will, but if an automatic method is provided or is possible with xl I'd prefer to use that. -Gene On Thu, Jan 29,

CentOS Errata and Enhancement Advisory 2015:X002 (Xen4CentOS) The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) ----------------------------- x86_64 ----------------------------- cdfc144852265d5b5d5ad929bc5b31159a6ca859715ba795134e2b85fe7e3399 libvirt-1.2.10-3.el6.x86_64.rpm

Gene, I think you should find the answers in * http://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt (bottom of page) * http://wiki.xenproject.org/wiki/Migration_Guide_To_Xen4.1%2B * http://wiki.xenproject.org/wiki/Network_Configuration_Examples_%28Xen_4.1%2B%29 * http://wiki.xenproject.org/wiki/XL_vs_Xend_Feature_Comparison may also be relevant If not, circle back to the list and I am sure

Hi, after migrating to libvirt/libxl according to: https://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt I've noticed that my Xen PV domains are being launched by qemu-system-i386 running under root privileges. I am wondering why is this? Previously no qemu process was used. If qemu is needed for some reason, are there any guidelines for non-root operation? Thanks -- Karel

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I normally use the network-script parameter in the '/etc/xen/xend-config.sxp' configuration file to configure network bridges. However, the latest release of Xen4CentOS (which comes with Xen 4.4.1) has xend disabled by default. Can I continue to use network-script without xend? If not what is the recommended method for automatically configuring network bridges with the latest release of

Hi all, I'm trying to install libvirt for xen on a brand new, minimal installation of CentOS 7.5.1804. After installing the OS, I did a 'yum update' and followed the basic how-tos at https://wiki.centos.org/HowTos/Xen/Xen4QuickStart and https://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt From previous experience, I know that the above steps worked fine. However,

Hi, After following the instructions here http://wiki.centos.org/HowTos/Xen/Xen4QuickStart and installing the kernel from Xen4 CentOS project (kernel-3.4.61-9.el6.centos.alt.x86_64) I can't use any networking because the firmware for my NIC is not available: Bringing up interface eth0.3: bnx2x 0000:02:00.0: firmware: requesting bnx2x/bnx2x-e1h-7.2.51.0.fw bnx2x:

Hi, spot on! On 6.9.2015 12:56, Pasi K?rkk?inen wrote: > On Sun, Sep 06, 2015 at 09:08:50AM +0200, Karel Hendrych wrote: >> Hi, after migrating to libvirt/libxl according to: >> > > Hi, > >> https://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt >> >> I've noticed that my Xen PV domains are being launched by >> qemu-system-i386 running

On Mon, Sep 07, 2015 at 05:47:39PM +0200, Karel Hendrych wrote: > ... > > changing from: <driver name='file'/> to: <driver name='tap2'/> makes > the domain start without QEMU. > > However I see much better performance with QEMU (close to dom0, > tested using simple dd writes) than with tap2 driver. Is that > expected? > How did you measure

Hi, Actually, we study virtualization on CentOS with Xen, our goal is to test if the migration of Xen with SLES 11 to CentsOS. Our first tests are ok except for one problem and I don't find any solutions on the net. I hope, you can help me. The problem is that I can't connect to my vm desktop with Virt-Viewer. I follow the installation guide available for centos?:

On Sun, Sep 06, 2015 at 09:08:50AM +0200, Karel Hendrych wrote: > Hi, after migrating to libvirt/libxl according to: > Hi, > https://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt > > I've noticed that my Xen PV domains are being launched by > qemu-system-i386 running under root privileges. > > I am wondering why is this? Previously no qemu process was used.

... changing from: <driver name='file'/> to: <driver name='tap2'/> makes the domain start without QEMU. However I see much better performance with QEMU (close to dom0, tested using simple dd writes) than with tap2 driver. Is that expected? What's best practise to file based storage on latest CentOS6-xen (Kernel 3.18.17, Xen 4.4.2-7) Are there any guides

Comparing simple dd bs=1M count=10000 on dom0 vs domU. Qemu driver is achieving pretty much the same like dom0. Thanks -- Karel On 7.9.2015 21:45, Pasi K?rkk?inen wrote: > On Mon, Sep 07, 2015 at 05:47:39PM +0200, Karel Hendrych wrote: >> ... >> >> changing from: <driver name='file'/> to: <driver name='tap2'/> makes >> the domain start

Good test, non-buffered dom0 dd write speed is similar with tap2. I'll likely stay with the QEMU backend. Are there any best practises regarding security, at least if QEMU can operate under non-root account? Cheers -- Karel On 12.9.2015 10:51, Pasi K?rkk?inen wrote: > On Sat, Sep 12, 2015 at 01:35:48AM +0200, Karel Hendrych wrote: >> Comparing simple dd bs=1M count=10000 on dom0

Hello, we have a strange problem on a fresh install of CentOS 6.5. On the server we want to use Xen to host paravirtualised guests (the system has no hardware virtualization support). To manage the domain we would like to use libvirt. Xen and libvirt are set up as described here: http://wiki.centos.org/HowTos/Xen/Xen4QuickStart http://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt When

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On Sat, Sep 12, 2015 at 01:35:48AM +0200, Karel Hendrych wrote: > Comparing simple dd bs=1M count=10000 on dom0 vs domU. Qemu driver > is achieving pretty much the same like dom0. > So you're measuring buffered speed. Try measuring non-buffered (iflag=direct or oflag=direct, depending if you're reading or writing). -- Pasi > Thanks > -- > Karel > > On 7.9.2015

Hi, I have used this http://wiki.centos.org/HowTos/Xen/Xen4QuickStart and everything works like a charm then I installed a VM using http://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt only to realize later that I don't want NAT. I would want to use PCI passthrough and so i used virsh net-destroy default virsh net-undefine default and net-create /home/kartik/passthrough.xml