Re: [ovirt-users] newbee questions
On Fri, May 16, 2014 at 3:00 AM, Itamar Heim ih...@redhat.com wrote: hacking it a bit... this will show you how/where: git clone git://gerrit.ovirt.org/ovirt-live grep -r wlan Which shows the following results : - add a 'etc/sysconfig/network-scripts/ifcfg-wlan0' interface script for the wifi interface (which is 'wlp2s0' in my case and not 'wlan0') - remove 'wlan*' from the line (which isnt present at all in my config to begin with) that reads 'hidden_nics = wlan\*,usb\*' in /etc/vdsm/vdsm.conf - add 'fake_nics = dummy0' to /etc/vdsm/vdsm.conf Somehow I doubt that making only these changes to my All-In-One install on Fedora19 will results in a working wifi ovirt setup. ;) Anyway, I noticed that ovirt-live is based on RHEL6/CentOS 6. I tried to install CentOS 6.5 on this system earlier, and failed at the network/wifi/interface connection/configuration/setup step so I couldnt get networking working at all with RHEL6/CentOS 6, and if ovirt-live is based on that I guess the same will happen when booting ovirt-live. I couldnt figure out what the issue was but i guess it's a driver and/or kernel issue with CentOS 6.5 . ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Wed, May 14, 2014 at 1:01 PM, Itamar Heim ih...@redhat.com wrote: to play with it, in an environment that works with wireless, the ovirt-live (usb boot) would work. but it will evaporate on power down... In what way(s) does the ovirt-live (usb boot) differ from the All-In-One install I performed ? Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On 05/15/2014 08:27 AM, John Smith wrote: On Wed, May 14, 2014 at 1:01 PM, Itamar Heim ih...@redhat.com wrote: to play with it, in an environment that works with wireless, the ovirt-live (usb boot) would work. but it will evaporate on power down... In what way(s) does the ovirt-live (usb boot) differ from the All-In-One install I performed ? ovirt-live runs from memory, not installed. designed for demo/play-around environments, which usually include laptops with wireless in demo booths, hence supposed to work with wireless. but that's really only for playing around to see how it looks, since it will evaporate on boot. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Thu, May 15, 2014 at 2:43 PM, Itamar Heim ih...@redhat.com wrote: On 05/15/2014 08:27 AM, John Smith wrote: On Wed, May 14, 2014 at 1:01 PM, Itamar Heim ih...@redhat.com wrote: to play with it, in an environment that works with wireless, the ovirt-live (usb boot) would work. but it will evaporate on power down... In what way(s) does the ovirt-live (usb boot) differ from the All-In-One install I performed ? ovirt-live runs from memory, not installed. designed for demo/play-around environments, which usually include laptops with wireless in demo booths, hence supposed to work with wireless. but that's really only for playing around to see how it looks, since it will evaporate on boot. So, what exactly, does ovirt-live do differently, that makes it work with wireless ? Assuming I can make the same configuration and/or software changes to make the All-In-One installation work with wireless, once I know what that is exactly. Regards, John Smith ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On 05/15/2014 12:07 PM, John Smith wrote: On Thu, May 15, 2014 at 2:43 PM, Itamar Heim ih...@redhat.com wrote: On 05/15/2014 08:27 AM, John Smith wrote: On Wed, May 14, 2014 at 1:01 PM, Itamar Heim ih...@redhat.com wrote: to play with it, in an environment that works with wireless, the ovirt-live (usb boot) would work. but it will evaporate on power down... In what way(s) does the ovirt-live (usb boot) differ from the All-In-One install I performed ? ovirt-live runs from memory, not installed. designed for demo/play-around environments, which usually include laptops with wireless in demo booths, hence supposed to work with wireless. but that's really only for playing around to see how it looks, since it will evaporate on boot. So, what exactly, does ovirt-live do differently, that makes it work with wireless ? Assuming I can make the same configuration and/or software changes to make the All-In-One installation work with wireless, once I know what that is exactly. hacking it a bit... this will show you how/where: git clone git://gerrit.ovirt.org/ovirt-live grep -r wlan ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Wed, May 14, 2014 at 1:45 AM, Itamar Heim ih...@redhat.com wrote: On 05/13/2014 05:22 AM, Sven Kieske wrote: Am 13.05.2014 11:12, schrieb Dan Kenigsberg: If you are planning to run only a couple of VMs on a single laptop, going to basics and using qemu/libvirt directly, or gnome-boxes, would make sense. If you plan to manage a multitude of hosts, then the benefits of oVirt comes to play. In the long run, it would be a huge achievement to utilize ovirt even for little vm workloads, especially if you want to compete with vmware. I know one size never fits all but I guess ovirt could very well be improved for single host management as well. single host management is not the same as roaming laptop with wireless... all-in-one and hosted engine should provide a decent solution for single host management - what are the gaps? For what it's worth: my system is not a roaming laptop. it's a fairly big desktop system that has a wireless interface. so in my case i think we might still be talking about 'single host management'. The reason i have wireless adapters in my desktops as well is because i couldnt easily wire the entire house. Perhaps these days, this is not such an uncommon configuration as you might think, and wireless is no longer only common in portable or laptop systems but in desktops as well. Anyway, I just wanted to try out this enterprise grade/level virtualization stack on a single node, just to see how it works and where the good/bad points are. Other people might want to try this for similar purposes, kick the tires a bit before a full blown formal multi host pilot is attempted. The 'All-In-One' installation/setup is meant to address that; i was hoping it would be a good fit for me as well. Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Wed, May 14, 2014 at 08:43:40AM +0200, John Smith wrote: On Wed, May 14, 2014 at 1:45 AM, Itamar Heim ih...@redhat.com wrote: On 05/13/2014 05:22 AM, Sven Kieske wrote: Am 13.05.2014 11:12, schrieb Dan Kenigsberg: If you are planning to run only a couple of VMs on a single laptop, going to basics and using qemu/libvirt directly, or gnome-boxes, would make sense. If you plan to manage a multitude of hosts, then the benefits of oVirt comes to play. In the long run, it would be a huge achievement to utilize ovirt even for little vm workloads, especially if you want to compete with vmware. I know one size never fits all but I guess ovirt could very well be improved for single host management as well. single host management is not the same as roaming laptop with wireless... all-in-one and hosted engine should provide a decent solution for single host management - what are the gaps? For what it's worth: my system is not a roaming laptop. it's a fairly big desktop system that has a wireless interface. so in my case i think we might still be talking about 'single host management'. The reason i have wireless adapters in my desktops as well is because i couldnt easily wire the entire house. Perhaps these days, this is not such an uncommon configuration as you might think, and wireless is no longer only common in portable or laptop systems but in desktops as well. Anyway, I just wanted to try out this enterprise grade/level virtualization stack on a single node, just to see how it works and where the good/bad points are. Other people might want to try this for similar purposes, kick the tires a bit before a full blown formal multi host pilot is attempted. The 'All-In-One' installation/setup is meant to address that; i was hoping it would be a good fit for me as well. I still hope that it would, despite the need to tweak and hack it a bit, and we'd be here to help. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On 05/14/2014 05:45 AM, Dan Kenigsberg wrote: On Wed, May 14, 2014 at 08:43:40AM +0200, John Smith wrote: On Wed, May 14, 2014 at 1:45 AM, Itamar Heim ih...@redhat.com wrote: On 05/13/2014 05:22 AM, Sven Kieske wrote: Am 13.05.2014 11:12, schrieb Dan Kenigsberg: If you are planning to run only a couple of VMs on a single laptop, going to basics and using qemu/libvirt directly, or gnome-boxes, would make sense. If you plan to manage a multitude of hosts, then the benefits of oVirt comes to play. In the long run, it would be a huge achievement to utilize ovirt even for little vm workloads, especially if you want to compete with vmware. I know one size never fits all but I guess ovirt could very well be improved for single host management as well. single host management is not the same as roaming laptop with wireless... all-in-one and hosted engine should provide a decent solution for single host management - what are the gaps? For what it's worth: my system is not a roaming laptop. it's a fairly big desktop system that has a wireless interface. so in my case i think we might still be talking about 'single host management'. The reason i have wireless adapters in my desktops as well is because i couldnt easily wire the entire house. Perhaps these days, this is not such an uncommon configuration as you might think, and wireless is no longer only common in portable or laptop systems but in desktops as well. Anyway, I just wanted to try out this enterprise grade/level virtualization stack on a single node, just to see how it works and where the good/bad points are. Other people might want to try this for similar purposes, kick the tires a bit before a full blown formal multi host pilot is attempted. The 'All-In-One' installation/setup is meant to address that; i was hoping it would be a good fit for me as well. I still hope that it would, despite the need to tweak and hack it a bit, and we'd be here to help. to play with it, in an environment that works with wireless, the ovirt-live (usb boot) would work. but it will evaporate on power down... ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
Am 13.05.2014 11:12, schrieb Dan Kenigsberg: If you are planning to run only a couple of VMs on a single laptop, going to basics and using qemu/libvirt directly, or gnome-boxes, would make sense. If you plan to manage a multitude of hosts, then the benefits of oVirt comes to play. In the long run, it would be a huge achievement to utilize ovirt even for little vm workloads, especially if you want to compete with vmware. I know one size never fits all but I guess ovirt could very well be improved for single host management as well. -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On 05/13/2014 05:22 AM, Sven Kieske wrote: Am 13.05.2014 11:12, schrieb Dan Kenigsberg: If you are planning to run only a couple of VMs on a single laptop, going to basics and using qemu/libvirt directly, or gnome-boxes, would make sense. If you plan to manage a multitude of hosts, then the benefits of oVirt comes to play. In the long run, it would be a huge achievement to utilize ovirt even for little vm workloads, especially if you want to compete with vmware. I know one size never fits all but I guess ovirt could very well be improved for single host management as well. single host management is not the same as roaming laptop with wireless... all-in-one and hosted engine should provide a decent solution for single host management - what are the gaps? ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Sun, May 11, 2014 at 05:32:41PM -0400, Itamar Heim wrote: On 05/04/2014 05:54 AM, John Smith wrote: Hi, Im very new to virtualization on Linux, wanting to kick the tires some, and am wondering where best to go next. Right now, ive done the 'all in one install' of ovirt 3.4 on a single fedora 19 machine. Its a desktop with a wifi network interface, and im trying to set up the kvm hypervisor in combination with macvtap. Any pointers to docs on what best to do next is appreciated. Im currently trying to make sense of this: http://www.ovirt.org/Quick_Start_Guide Also, as far as I can tell, there seems to be an issue with the detection of my wireless wifi network interface 'wlp2s0' as it doesnt seem to show up anywhere in the interface. I can attach the 'ovirtmgmt' network to my standard wired ethernet interface 'p2p2', but that device is not in use on the machine and it is disconnected from the network. Reading about linux virt and issues with bridging with wifi NIC's on the web made me, perhaps incorrectly here, assume that a wifi nic might be an issue, so thats where the idea to use macvtap came from. Manual setup of macvtap seems to work, as i can do this without issues on a root prompt on the same machine: ip link add link wlp2s0 name macvtap0 type macvtap ip link set macvtap0 address 1a:46:0b:ca:bc:7b up ip link show macvtap0 But the wifi interface 'wlp2s0' does not seem to show up in the ovirt web gui interface. Im sorry if I sound confusing here, but that may be just because im really still confused about ovirt. ;) So any pointers on what to read up on or do next is appreciated, Thanks, Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ovirt is meant to manage your datacenter, so not the best match for running with a wireless nic i guess. vdsm may even be filtering it (danken?) It is, because oVirt only supports bridge-based VM networks, and Linux does not allow you to bridge a WiFi nic. To work around this limitation, you could define a NAT-based network in libvirt http://libvirt.org/formatnetwork.html#examplesNAT and use it in oVirt via vdsm-hook-extnet (a bit more about it in http://developerblog.redhat.com/2014/02/25/extending-rhev-vdsm-hooks/ ) Dan. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Mon, May 12, 2014 at 12:49 PM, Dan Kenigsberg dan...@redhat.com wrote: oVirt only supports bridge-based VM networks, and Linux does not allow you to bridge a WiFi nic. Which is why I was looking at the option of using 'macvtap' instead, which does allow you to use a wifi nic: http://libvirt.org/formatnetwork.html#examplesDirect http://www.libvirt.org/formatdomain.html#elementsNICSDirect However, my current knowledge (of libvirt, etc.) is too limited to use those two links to create a working setup for me, so some more detailed and/or elaborate instructions and/or documentation would be appreciated. It seems to involve the manual creation of xml files, and then feeding those to virsh in order to change the configuration or something ? Is there a command i can feed vrish to make it dump the current configuration in xml, so that maybe i can start to use that as a basis and hack it up to see what happens ? Thanks again, Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Mon, May 12, 2014 at 05:12:14PM +0200, John Smith wrote: On Mon, May 12, 2014 at 12:49 PM, Dan Kenigsberg dan...@redhat.com wrote: oVirt only supports bridge-based VM networks, and Linux does not allow you to bridge a WiFi nic. Which is why I was looking at the option of using 'macvtap' instead, which does allow you to use a wifi nic: http://libvirt.org/formatnetwork.html#examplesDirect http://www.libvirt.org/formatdomain.html#elementsNICSDirect A big limitation of the macvtap approach is that it would let you connect only a single VM to your WiFi. Is that fine by you? However, my current knowledge (of libvirt, etc.) is too limited to use those two links to create a working setup for me, so some more detailed and/or elaborate instructions and/or documentation would be appreciated. It seems to involve the manual creation of xml files, and then feeding those to virsh in order to change the configuration or something ? Is there a command i can feed vrish to make it dump the current configuration in xml, so that maybe i can start to use that as a basis and hack it up to see what happens ? Yes, defining a libvirt network requires using virsh net-define xmlfile (you may need to pass the not-so-secret vdsm@ovirt/shibboleth password to tinker with libvirt, which is better done on non-production setup) virsh net-dumpxml net-name could show you what's already defined, but I don't expect you to have interesting networks as of yet. It may not be easy, but I'd be grateful if you report here on what you will have accomplished. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Mon, May 12, 2014 at 5:39 PM, Dan Kenigsberg dan...@redhat.com wrote: A big limitation of the macvtap approach is that it would let you connect only a single VM to your WiFi. Is that fine by you? I wasnt aware of that limitation. No, a single VM limitation would not be sufficient. I was assuming you could simply do something like this : ip link add link wlp2s0 name macvtap0 type macvtap ip link add link wlp2s0 name macvtap1 type macvtap ip link add link wlp2s0 name macvtap2 type macvtap And then assign individual 'interfaces' macvtap0, macvtap1 and macvtap2 to different VM's. Apparently it doesnt work that way. Yes, defining a libvirt network requires using virsh net-define xmlfile (you may need to pass the not-so-secret vdsm@ovirt/shibboleth password to tinker with libvirt, which is better done on non-production setup) virsh net-dumpxml net-name could show you what's already defined, but I don't expect you to have interesting networks as of yet. Thanks, ill start fooling around with virsh net-define and virsh net-dumpxml then. It may not be easy, but I'd be grateful if you report here on what you will have accomplished. No problem. Although after having read your last message, I think I may be better off using (and start with looking at) your NAT-based network / vdsm-hook-extnet approach. Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Mon, May 12, 2014 at 06:14:40PM +0200, John Smith wrote: On Mon, May 12, 2014 at 5:39 PM, Dan Kenigsberg dan...@redhat.com wrote: A big limitation of the macvtap approach is that it would let you connect only a single VM to your WiFi. Is that fine by you? I wasnt aware of that limitation. No, a single VM limitation would not be sufficient. I was assuming you could simply do something like this : ip link add link wlp2s0 name macvtap0 type macvtap ip link add link wlp2s0 name macvtap1 type macvtap ip link add link wlp2s0 name macvtap2 type macvtap And then assign individual 'interfaces' macvtap0, macvtap1 and macvtap2 to different VM's. Apparently it doesnt work that way. Maybe it does - please try or wait for someone in the know (such as mst) to explain. The thing is that afaik http://libvirt.org/formatnetwork.html#examplesDirect creates the macvtap devices for you, and it creates one device per one virtual function. Yes, defining a libvirt network requires using virsh net-define xmlfile (you may need to pass the not-so-secret vdsm@ovirt/shibboleth password to tinker with libvirt, which is better done on non-production setup) virsh net-dumpxml net-name could show you what's already defined, but I don't expect you to have interesting networks as of yet. Thanks, ill start fooling around with virsh net-define and virsh net-dumpxml then. It may not be easy, but I'd be grateful if you report here on what you will have accomplished. No problem. Although after having read your last message, I think I may be better off using (and start with looking at) your NAT-based network / vdsm-hook-extnet approach. NB: Even if it is possible to define a libvirt network with several pre-created macvtaps, you'd need something like vdsm-hook-extnet to convince oVirt to use your network instead of a bridge. Dan. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On Mon, May 12, 2014 at 7:44 PM, Dan Kenigsberg dan...@redhat.com wrote: or wait for someone in the know (such as mst) to explain. Guess ill do that, then. The thing is that afaik http://libvirt.org/formatnetwork.html#examplesDirect creates the macvtap devices for you, and it creates one device per one virtual function. Hrm. here the docs talk about 'interface pools', where presumably, you can map (combine/bond) multiple physical interfaces to a single virtual interface, instead of the other way around: mapping a single physical interface to multiple virtual interfaces. NB: Even if it is possible to define a libvirt network with several pre-created macvtaps, you'd need something like vdsm-hook-extnet to convince oVirt to use your network instead of a bridge. ... because ovirt is hardwired to work with linux network bridges only ? maybe i should just stop fooling around with ovirt altogether, and just start work on custom tooling to work with kvm and macvtap directly: all of the restrictions appear to be in the ovirt management layer and not in the underlying virtualization technologies like kvm or macvtap ? Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] newbee questions
On 05/04/2014 05:54 AM, John Smith wrote: Hi, Im very new to virtualization on Linux, wanting to kick the tires some, and am wondering where best to go next. Right now, ive done the 'all in one install' of ovirt 3.4 on a single fedora 19 machine. Its a desktop with a wifi network interface, and im trying to set up the kvm hypervisor in combination with macvtap. Any pointers to docs on what best to do next is appreciated. Im currently trying to make sense of this: http://www.ovirt.org/Quick_Start_Guide Also, as far as I can tell, there seems to be an issue with the detection of my wireless wifi network interface 'wlp2s0' as it doesnt seem to show up anywhere in the interface. I can attach the 'ovirtmgmt' network to my standard wired ethernet interface 'p2p2', but that device is not in use on the machine and it is disconnected from the network. Reading about linux virt and issues with bridging with wifi NIC's on the web made me, perhaps incorrectly here, assume that a wifi nic might be an issue, so thats where the idea to use macvtap came from. Manual setup of macvtap seems to work, as i can do this without issues on a root prompt on the same machine: ip link add link wlp2s0 name macvtap0 type macvtap ip link set macvtap0 address 1a:46:0b:ca:bc:7b up ip link show macvtap0 But the wifi interface 'wlp2s0' does not seem to show up in the ovirt web gui interface. Im sorry if I sound confusing here, but that may be just because im really still confused about ovirt. ;) So any pointers on what to read up on or do next is appreciated, Thanks, Regards, John Smith. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ovirt is meant to manage your datacenter, so not the best match for running with a wireless nic i guess. vdsm may even be filtering it (danken?) ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
