Re: [CentOS] using KVM Virbr0 with bonded nics?
YOu will have to do it on the virbr side, if it does not pick it up automatically. If the bond is set to be your default route, it may just do the right thing. More surprising things have happened... On Mon, 24 Oct 2011, Bob Hoffman wrote: Interested in bonding my 2 on board nics along with my add on card NIC for a total of 3. How would this work with the virtual machines? My eths/IPs --- bond0, bond0:1, etc --- ? virbr0,virbr0:1 (each machine to have own IP address, one machine may have some virtual sites needing more than one ip, so multiple ips added to mix..) add something to the bond0 file, or just leave it alone and mess with the virbr0 files? I heard something about network manager not liking bonding and bridging... anyone do this kind of thing? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Jim Wildman, CISSP, RHCE j...@rossberry.com http://www.rossberry.net Society in every state is a blessing, but Government, even in its best state, is a necessary evil; in its worst state, an intolerable one. Thomas Paine ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using KVM Virbr0 with bonded nics?
Jim Wildman wrote - YOu will have to do it on the virbr side, if it does not pick it up automatically. If the bond is set to be your default route, it may just do the right thing. More surprising things have happened... On Mon, 24 Oct 2011, Bob Hoffman wrote: / Interested in bonding my 2 on board nics along with my add on card NIC // for a total of 3.// // How would this work with the virtual machines? // My eths/IPs --- bond0, bond0:1, etc --- ? virbr0,virbr0:1 // (each machine to have own IP address, one machine may have some virtual // sites needing more than one ip, // so multiple ips added to mix..)// //add something to the bond0 file, or just leave it alone and mess with // the virbr0 files? // I heard something about network manager not liking bonding and bridging... // anyone do this kind of thing? / - Still working on a solution. Apparently the bondn files demand an ipaddress, thus there might have to be one for each and every single ip coming into the computer...I guess you would have to do that anyway just like eth0, eth0:0, eth0:1, etc. I think I am going to try to just make a separate ethn for each ip, going to their respective bondn with the proper ipaddress in them. Then use the bridge as normal, with each bondn calling a respective bridge. Not sure how that works with multiple ips going to same machine (as in, can the bridge handle more than one ip, or can the machine look for more than one bridge...?) Then obviously, the VM would need to go through the whole process too. I can see no other way and there is no information out there going over any of it...will post if it works. (next step after figuring out lvm kvm storage issues.wheee) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using KVM Virbr0 with bonded nics?
On 10/25/2011 10:48 AM, Bob Hoffman wrote: Still working on a solution. Apparently the bondn files demand an ipaddress, thus there might have to be one for each and every single ip coming into the computer...I guess you would have to do that anyway just like eth0, eth0:0, eth0:1, etc. I think I am going to try to just make a separate ethn for each ip, going to their respective bondn with the proper ipaddress in them. Then use the bridge as normal, with each bondn calling a respective bridge Not sure how that works with multiple ips going to same machine (as in, can the bridge handle more than one ip, or can the machine look for more than one bridge...?) For various reasons I base my host machines on Ubuntu 10.04-LTS and run CentOS under KVM. My bonded/bridged host configuration looks like this. You will have to figure out the CentOS equivalents. # The primary network interface iface eth0 inet manual iface eth1 inet manual # eth0 eth1 form bond0 for x.x.x.0/25 subnet auto bond0 iface bond0 inet static bond_miimon 100 bond_mode active-backup bond_downdelay 200 bond_updelay 200 address x.x.x.35 netmask 255.255.255.128 network x.x.x.0 post-up ifenslave bond0 eth0 eth1 pre-down ifenslave -d bond0 eth0 eth1 auto br0 iface br0 inet static bridge_ports bond0 address x.x.x.35 netmask 255.255.255.128 network x.x.x.0 gateway x.x.x.126 I then configured the virtual interface for each virtual machine like this: interface type='bridge' mac address='xx:xx:xx:xx:xx:xx'/ source bridge='br0'/ model type='virtio'/ /interface and configured each machine using regular 'eth0'. Don't forget to make sure forwarding is turned on and that your firewall on the host machine allows FORWARD chain packets to the bridged interface. -- Benjamin Franz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] using KVM Virbr0 with bonded nics?
Interested in bonding my 2 on board nics along with my add on card NIC for a total of 3. How would this work with the virtual machines? My eths/IPs --- bond0, bond0:1, etc --- ? virbr0,virbr0:1 (each machine to have own IP address, one machine may have some virtual sites needing more than one ip, so multiple ips added to mix..) add something to the bond0 file, or just leave it alone and mess with the virbr0 files? I heard something about network manager not liking bonding and bridging... anyone do this kind of thing? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
On Wed, Jan 5, 2011 at 6:13 AM, Jim Wildman j...@rossberry.com wrote: On Tue, 4 Jan 2011, Jerry Geis wrote: All - I am running a virtual windows 7 (pro 64) on centos 5.5 x86_64. I was hoping to run virtual XP inside windows7 in this configuration. I get an error about cannot start virtual XP when I try this. Do I not have something setup correctly or can I not run a double virtual environment? I'd be very surprised if that would work. The virtual environments check for the correct processor type. A virtual cpu is probably not on the list.. I have not tried a VM within a VM (nested) although I have heard that it is possible. I guess the correct processor type could be passed with the -cpu parameter. -- Arun Khan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
I have not tried a VM within a VM (nested) although I have heard that it is possible. I guess the correct processor type could be passed with the -cpu parameter. -- Arun Khan I have tried -cpu phenum which does not run at all. and I tried -cpu core2duo which runs the guest but does not run the VM within a VM. Thanks, Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
On Tue, Jan 4, 2011 at 2:01 PM, Jerry Geis ge...@pagestation.com wrote: All - I am running a virtual windows 7 (pro 64) on centos 5.5 x86_64. I was hoping to run virtual XP inside windows7 in this configuration. I get an error about cannot start virtual XP when I try this. Do I not have something setup correctly or can I not run a double virtual environment? I don't have an answer to your question, but curious as to how the virtual XP is running inside Win7. Does it use an entire virtualization layer or is it something similar to Wine's approach? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
From what I remember -cpu is to tell the vm what cpu extensions are available. I always just use -cpu host which has kvm pass in all the cpu extensions that the host processor has. Using WindowsXP mode on a windows 7 VM sounds dirty. XP mode used to require virtualization hardware, now it doesn't. Perhaps passing in a cpu that doesn't have virtualization extensions is the way to make windows go the non-hardware route. I would expect the performance to be abysmal, but it would be a neat trick. Patrick -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Jerry Geis Sent: Wednesday, January 05, 2011 8:09 AM To: CentOS ML Subject: Re: [CentOS] using kvm I have not tried a VM within a VM (nested) although I have heard that it is possible. I guess the correct processor type could be passed with the -cpu parameter. -- Arun Khan I have tried -cpu phenum which does not run at all. and I tried -cpu core2duo which runs the guest but does not run the VM within a VM. Thanks, Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
On Tue, 4 Jan 2011, Jerry Geis wrote: All - I am running a virtual windows 7 (pro 64) on centos 5.5 x86_64. I was hoping to run virtual XP inside windows7 in this configuration. I get an error about cannot start virtual XP when I try this. Do I not have something setup correctly or can I not run a double virtual environment? In general, it is not possible to nest virtualization environments. The hypervisor needs to trap certain events/interrupts and reserve certain instructions to manage the guest OS. As such, those are not available to the guest OS, therefore it cannot be a hypervisor itself. You *might* be able to run an emulator (bochs, qemu, etc) within the guest OS, but the performance would be something close to abominable. I'd say you're better off running two guests, one of Win7 and one of WinXP, and use some other mechanism (virtual network) to let them communicate. -- Mitch ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
Mitch Patenaude wrote: On Tue, 4 Jan 2011, Jerry Geis wrote: All - I am running a virtual windows 7 (pro 64) on centos 5.5 x86_64. I was hoping to run virtual XP inside windows7 in this configuration. I get an error about cannot start virtual XP when I try this. Do I not have something setup correctly or can I not run a double virtual environment? In general, it is not possible to nest virtualization environments. snip I'd add that all you need to do, if you could get this working, is to open a command window, and you'd have *exactly* the same performance as if you were running the original PC, on an 8088 with the o/s loaded from floppy drives mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] using kvm
All - I am running a virtual windows 7 (pro 64) on centos 5.5 x86_64. I was hoping to run virtual XP inside windows7 in this configuration. I get an error about cannot start virtual XP when I try this. Do I not have something setup correctly or can I not run a double virtual environment? Thanks, Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] using kvm
On Tue, 4 Jan 2011, Jerry Geis wrote: All - I am running a virtual windows 7 (pro 64) on centos 5.5 x86_64. I was hoping to run virtual XP inside windows7 in this configuration. I get an error about cannot start virtual XP when I try this. Do I not have something setup correctly or can I not run a double virtual environment? I'd be very surprised if that would work. The virtual environments check for the correct processor type. A virtual cpu is probably not on the list.. -- Jim Wildman, CISSP, RHCE j...@rossberry.com http://www.rossberry.com Society in every state is a blessing, but Government, even in its best state, is a necessary evil; in its worst state, an intolerable one. Thomas Paine ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
