April 2011 - Users - libvirt List Archives

[libvirt-users] point-to-point connection between vm and host
by Jorge Somavilla 12 May '11

12 May '11

Hi! hopefully someone can give me a hint with this: I need to create a vm with a point-to-point connection to the host using a /30 subnet. Right now i have this in the vm's xml for libvirt: <interface type="network" name="eth0" onboot="yes"> <source network="default"/> <mac address="02:fd:00:00:01:00"/> </interface> Which brings up an interface in the vm that is configured later by a a daemon, getting to this: vnx@r2:~$ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 02:fd:00:00:01:00 inet addr:10.250.0.2 Bcast:10.250.0.3 Mask:255.255.255.252 While in the host the other interface is created: root@tau:/home/jorge/workspace/vnx# ifconfig r2-e0 r2-e0 Link encap:Ethernet HWaddr 0a:81:b6:3c:24:15 inet addr:10.250.0.1 Bcast:10.250.0.3 Mask:255.255.255.252 However there is no connectivity between them, probably because of some mistake in the <interface> tag, perhaps a wrong 'type' attribute, but i haven't found out yet. I wouldn't want to create a bridge and connect both interfaces (vm's and host's) to the bridge, but to have this ptp, if possible. How would i go about doing that? thanks! Jorge

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[libvirt-users] Listing machines as non-root user
by Maciej Gałkiewicz 05 May '11

05 May '11

I have a problem with virsh. I'm using eucalyptus software on top of xen 4 (debian squeeze). The problem is that unix user "eucalyptus" cannot see vm machines when it executes "virsh list". My libvirt version is 0.8.8-3 from debian sid repository. The same problem occurs with older versions. What is more I have tried to change unix_sock_ro_perms to "2777". After libvirt restart it started to work. Even when I reverted this change it was still working. Unfortunately after server restart virsh still does not work (I am not sure but I cannot restart my production servers right now). Everything is fine when I run virsh as root. I have the same issue on 7 machines. regards M. Galkiewicz

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[libvirt-users] [Libvir] libvirt & vde_switch
by Robert Šmol 02 May '11

02 May '11

Hi, I would like to ask about status of VDE and libvirt. I found a thread from http://www.redhat.com/archives/libvir-list/2008-February/msg00030.html. I am not interested in connecting the VDE to the outside world. I have created a FW machine using macvtap. To this machine I would like to attach machines from different zones (dmz, prod, cust). I was thinking on using VDE and vlans (FW would have 1 interface in each vlan - machines also), but I am not aware how to configure this in libvirt. I now assume I can do the same setup with regular bridges for the moment (benefit of VDE would be only 1 switch for many vlans). Regards, Robert -- stereoIT - Open Source Technology Partners http://www.stereoit.com mobile: +420 776 762378

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[libvirt-users] port forwarding
by Ireneusz Szcześniak 29 Apr '11

29 Apr '11

Hi, I'm using CentOS release 5.6 (Final) and Xen 3.1. I'm writing to ask how to configure port forwarding. With virt-manager 0.6.1 I added the machines, but there I don't see an option for port forwarding. I would like to reach the VM on a specific port of the host machine. Once the machinces are running, I can configure iptables so that the port forwarding works, but after host reboots, other rules are inserted (put in front of my rules), which disable my rules. I guess these rules are put by libvirt, and so I'm writing to this list. These are the rules inserted: Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable I need to have a different rules for 192.168.122.0/24: the states RELATED,ESTABLISHED are fine, but I need the NEW state put there too, so that the new forwards can go through. Thanks, Irek -- Ireneusz (Irek) Szczesniak http://www.irkos.org

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[libvirt-users] Disk not bootable from yesterday resolved
by David Brown 28 Apr '11

28 Apr '11

Just an update and a thanks. The not bootable issue I was having yesterday ended up being for some odd reason the disk type in the domain define xml file had been switched to the disk being "raw" rather than qcow2 format. When I changed:<driver name='qemu' type='raw'/> to <driver name='qemu' type='qcow2'/> It booted without issue. I'm not clear how that got changed on the original domain. It was in use without issue about a week ago. :/ I then ran the clone again and it cloned fine, but had the boot issueagain. I checked the cloned domain.xml file and again it said typeraw. I changed it again to qcow2 and it booted fine. Bug? Shouldn't it keep the type in the config the same? Anyway, thanks for help and especially the quick responses! Dave

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[libvirt-users] problem installing libvirt from source
by Lars Nordin 27 Apr '11

27 Apr '11

I'm trying to compile and install libvirt-0.9.0 on Ubuntu v10.04. The make and install went fine and I don't see any errors but there isn't a libvirt directory created in /usr/local/lib/python2.6/dist-packages. I specified configure --with-vmware -with-esx (and later --with-python), then make, then sudo make install. >From config.log: prefix = /usr/local exec_prefix = ${prefix} pyexecdir = ${exec_prefix}/lib/python2.6/dist-packages pythondir = ${prefix}/lib/python2.6/dist-packages pkgpyexecdir = ${pyexecdir}/libvirt pkgpythondir = ${pythondir}/libvirt

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Re: [libvirt-users] virt-clone: clone not bootable
by David Brown 27 Apr '11

27 Apr '11

It says: booting from hard disk Booting failed device not bootable FATAL: failed to boot from device. Or something very similar. Whit Blauvelt <whit.virt(a)transpect.com> wrote: >On Tue, Apr 26, 2011 at 01:45:23PM -0700, David Brown wrote: >> The clone was made with the following command: virt-clone -o centos -n >> centosclone -f /path/to/new/image.img >> I've attempted it several times and get the same result. >> Has anyone seen this or know how to resolve it? > >I've often cloned CentOS 5.5 KVM VMs with that same invocation, and no >problem. > >When you say it's "not bootable," what exactly do you see at time of >failure? > >Whit

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[libvirt-users] virt-image issue
by Zvi Dubitzky 27 Apr '11

27 Apr '11

Hi Does anybody work with the virt-image utility. - I do not see where/how one specifies the pre-defned image or the CD iso image to produce the image from - what is the .xml file requested for ? I guess it is the output xml file I just used the command with an existing .xml file (thought the utility will modify it according to the specified flags) but got the error message : "ERROR Cannot parse 'vmTest3.xml': Root element is not 'image" Any idea what is missing ? thanks Zvi Dubitzky Email:dubi@il.ibm.com

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[libvirt-users] virt-clone: clone not bootable
by David Brown 27 Apr '11

27 Apr '11

Hi, Not sure if this is the right mailing list, but... I have a Linux VM (CentOS 5.4) VM. I cloned it with virt-clone, but the clone isn't bootable. When I attempt to boot it says: Booting from hard diskBoot failed: not a bootable diskFATAL: No bootable device The clone was made with the following command: virt-clone -o centos -n centosclone -f /path/to/new/image.img I've attempted it several times and get the same result. Has anyone seen this or know how to resolve it? Thanks,Dave

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[libvirt-users] Adding more disks...
by Dale Amon 26 Apr '11

26 Apr '11

I need a VM with about 6-8 qcow2 disk images, but it seems to only allow 4 disks on the ide, like the real hardware. What lines do you need to add on to the xml definition file to get hde, hdf, hdg, etc?

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[libvirt-users] How to providing virtual USB disk (usb-storage for QEMU) devices to guests?
by oPKo o 26 Apr '11

26 Apr '11

Hi, I am trying to provide virtual USB disk devices to guests but without success. With QEMU is simple to plug the virtual USB disk with the command: (qemu) drive_add 0 id=my_usb_disk,if=none,file=usbdisk.img OK (qemu) device_add usb-storage,id=my_usb_disk,drive=my_usb_dis I can do this with libvirt? PK PS: sorry for my poor english

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[libvirt-users] problem with qemu
by Miroslav Ludvik 25 Apr '11

25 Apr '11

Hi All, I use Ubuntu server 10.04 LTS as virtualization platform. Actually running kernel 2.6.32-31-server #61-Ubuntu S root@jupiter:~# uname -a Linux jupiter 2.6.32-31-server #61-Ubuntu SMP Fri Apr 8 19:44:42 UTC 2011 x86_64 GNU/Linux We have on running virtual root@jupiter:~# virsh list --all Id Name State ---------------------------------- 1 kvmtik.4safety.cz running I run script for create virtual system wrote root@jupiter:~# make-hestia.4safety.cz.sh 2011-04-24 21:13:25,613 ERROR : ubuntu-kvm already exists Traceback (most recent call last): File "/usr/bin/vmbuilder", line 24, in <module> cli.main() File "/usr/lib/python2.6/dist-packages/VMBuilder/contrib/cli.py", line 81, in main raise VMBuilderUserError('%s already exists' % destdir) VMBuilder.exception.VMBuilderUserError: ubuntu-kvm already exists /usr/local/bin/make-hestia.4safety.cz.sh: line 29: --libvirt=qemu:///system: No such file or directory I try restart libvirt and system wrote to syslog root@jupiter:~# /etc/init.d/libvirt-bin restart Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service libvirt-bin restart Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the restart(8) utility, e.g. restart libvirt-bin libvirt-bin start/running, process 25202 root@jupiter:~# tail -f /var/log/syslog Apr 24 20:25:01 jupiter CRON[25031]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Apr 24 20:35:01 jupiter CRON[25036]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Apr 24 20:45:01 jupiter CRON[25042]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Apr 24 20:55:01 jupiter CRON[25048]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Apr 24 21:05:01 jupiter CRON[25152]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Apr 24 21:15:01 jupiter CRON[25183]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Apr 24 21:17:01 jupiter CRON[25189]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Apr 24 21:17:58 jupiter libvirtd: 21:17:58.089: warning : qemudDispatchSignalEvent:385 : Shutting down on signal 15 Apr 24 21:17:58 jupiter libvirtd: 21:17:58.617: error : udevStrToLong_ui:73 : Failed to convert '008' to unsigned int#012 Apr 24 21:17:59 jupiter kernel: [106086.771154] lo: Disabled Privacy Extensions Than for your help. Mirek

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[libvirt-users] Media autoremove
by Nikita A Menkovich 25 Apr '11

25 Apr '11

I have an iso, than automate freebsd install, and after installation it reboot VM. I want to remove cdrom drive with ISO from VM config after reboot? How I could do this? -- Nikita A Menkovich http://libc6.org/ JID: menkovich(a)gmail.com

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[libvirt-users] Setup Mulitple VM's
by ssaleh＠nrln.us 25 Apr '11

25 Apr '11

I have a small public IP block (/29) I'd like to populate with VM's from a single physical box running CentOS/5. I'd like to get some thoughts on the best way to setup networking to support this. I'm OK with setting up the virtual hosts. Any advice would be appreciated. TIA...

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[libvirt-users] vvirsh memtune
by Zvi Dubitzky 24 Apr '11

24 Apr '11

Hi Does anybody use the 'virsh memtune' command and can he say what combination of libvirt version and libcgroup does he use thanks Zvi Dubitzky Email:dubi@il.ibm.com

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[libvirt-users] 2 hosts, mirrored VM storage, avoiding conflicting VM instances
by Whit Blauvelt 24 Apr '11

24 Apr '11

Hi, Using libvirt for KVM, experimenting with live migration with the VM on storage shared in a mirrored GlusterFS or an active-active DRBD setup where QEMU/KVM runs on the hosts on both sides of the mirror, the live migration works great. What concerns me is finding a way if possible to prevent a situation where a particular VM is running on both hosts at once. Is there any way within libvirt in this sort of setup to start a VM on mirrored storage from a KVM host on one side of the mirror _only if_ the same VM isn't already running on the other side of the mirror? In a scripting context I can see how to do that check before starting, but not how to prevent virsh or virt-manager from being used to create this bad condition when they're being used directly. Is there some way to set up protection from this within virsh and virt-manager? Or am I into feature request territory? Or is there some other layer at which this can be accomplished? In active-passive DRBD this wouldn't be a danger, since only the active system can see the storage to start the VM. But that wouldn't support live migration. Part of the danger can be avoided by using stonith in failover, but it would be nice to find a more fine-grained, subtle approach. Best, Whit

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[libvirt-users] PCI Pass through of atheros card
by Varun Ganesh 24 Apr '11

24 Apr '11

Hi, I am trying to make a PCI passthrough of the atheros card to a VM running over KVM. am following the steps given at http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/sec…. but am getting the following errors, 1. Error starting domain: operation failed: failed to retrieve chardev info in qemu with 'info chaqdev' 2. Details: 3. Error starting domain: operation failed: failed to retrieve chardev info in qemu with 'info chaqdev' 4. 5. Traceback (most recent call last): 6. File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper 7. callback(asyncjob, *args, **kwargs) 8. File "/usr/share/virt-manager/virtManager/engine.py", line 959, in asyncfunc 9. vm.startup() 10. File "/usr/share/virt-manager/virtManager/domain.py", line 1114, in startup 11. self._backend.create() 12. File "/usr/lib/python2.7/site-packages/libvirt.py", line 333, in create 13. if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) 14. libvirtError: operation failed: failed to retrieve chardev info in qemu with 'info chaqdev' I am using a Dell Optiplex XE system which has VT-d enabled and Atheros AR5001X+ Wireless Network Adapter. How do i rectify this. Thanks, sincerely, Varun Ganesh

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[libvirt-users] domain not present after shutdown
by David White 22 Apr '11

22 Apr '11

I hope this is simple I have one kvm host that lists all my domains even after shut down. 'virsh list --all' shows machines in 'running' and 'shut off' states. If I copy those over to another machine and it only shows the virt machines in running state. vmhost2:~$ virsh list --all Id Name State ---------------------------------- 4 mybox4 running vmhost2:~$ virsh version Compiled against library: libvir 0.8.3 Using library: libvir 0.8.3 Using API: QEMU 0.8.3 Running hypervisor: QEMU 0.12.5 vmhost1:~$ virsh list --all Id Name State ---------------------------------- - mybox3 shut off 2 mybox4 running vmhost1:~$ virsh version Compiled against library: libvir 0.7.5 Using library: libvir 0.7.5 Using API: QEMU 0.7.5 Running hypervisor: QEMU 0.12.3 question -- why doesn't mybox3 show up on vmhost2? where should I start looking? hope this isn't too open ended...

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[libvirt-users] [PATCHv11 0/6] libvirt/qemu - persistent modification of devices
by KAMEZAWA Hiroyuki 22 Apr '11

22 Apr '11

Here is v11. Fixed comments/bugs and updated against the latest libvirt.git. Changes v10->v11: - fixed comments on each patches - fixed cgroup handling in patch 3. - fixed MODIFY_CURRENT handling in patch 4. most of diff comes from refactoring qemu/qemu_driver.c -- conf/domain_conf.c | 40 ++ conf/domain_conf.h | 5 libvirt_private.syms | 3 qemu/qemu_driver.c | 727 +++++++++++++++++++++++++++++++-------------------- 4 files changed, 500 insertions(+), 275 deletions(-) Thanks, -Kame

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[libvirt-users] No IOMMU found. Unable to assign device
by Marco van Beek 22 Apr '11

22 Apr '11

Hi, I am playing around with PCI passthrough and came across some posts that said you could not do PCI passthrough unless you had IOMMU hardware. which it would appear I don't Is this the case? Am I flogging a dead horse? Thanks, Marco -- Marco van Beek ========================================== Supporting Role Ltd. Grove Park Studios, 188-192 Sutton Court Rd, London, W4 3HR ========================================== T: 0870 757 2824 F: 0870 757 2826 M: 0788 770 3604 E: mvanbeek(a)supporting-role.co.uk W: http://www.supporting-role.co.uk/ ========================================== Company Registered in England No. 03658568 ==========================================

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[libvirt-users] kvm virtual server boot order
by Yee Ja 21 Apr '11

21 Apr '11

The boot order issue http://osdir.com/ml/libvir-list/2009-08/msg00398.html resolved with the code changes specified by http://www.redhat.com/archives/libvir-list/2009-August/msg00340.html seems to suggest that hard disks, cdroms, floppy devices (since they are all disks) are ordered primarily by virtual bus type as encountered in the domain xml. This indicates that there can exist a conflict between the primary and secondary boot device types. Given the scenario where the disks of a virtual server are defined in the following order harddisk hda harddisk vda cdrom vdb cdrom hdb Boot device type is crdom. Which cdrom device will be boot attempted? >From the above links, I'm guessing that hdb will be boot attempted. Is this the actual behavior? Thanks, Yee -- yja(a)us.ibm.com * 512-286-6793 T/L 363 * Systems Management Software Development * Austin, TX

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[libvirt-users] Undefined interfaces?
by Alex 20 Apr '11

20 Apr '11

Hi, I have a working fc14 install with a few virtual interfaces set up, and just noticed the following in messages: Apr 18 13:07:43 fc14 libvirtd: 13:07:43.155: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `br0:0`) Apr 18 13:07:43 fc14 libvirtd: 13:07:43.165: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `eth0:0`) Apr 18 13:07:43 fc14 libvirtd: 13:07:43.175: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `eth1:0`) Apr 18 13:07:43 fc14 libvirtd: 13:07:43.185: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `eth1:1`) I see several references that indicate this may be a bug. Or have I configured something wrong? I have some interfaces configured to be a bridge and others are configured as a regular network, with the guests being masqueraded. It's certainly possible I've configured something incorrectly. I'm not sure what information to provide to help troubleshoot this. Any information would be greatly appreciated. Thanks, Alex

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[libvirt-users] Accessing a MAC address from inside the VM?
by David Lane 19 Apr '11

19 Apr '11

Greetings, I have a very simple problem, but the resolution is proving rather complex. Bare with me, I will attempt to explain. I have a host machine with no GUI. I attach an existing .img file to the host machine and need to change the MAC address (since the image was created on another machine). Is there a way from with in the guest to do this or do I have muck with the XML? And if I muck with the XML and change it, how do I pass this information up to the guest, or will the guest see it automagically or do I have to write it down and then manually transfer it into the guest's ifcfg? Using the GUI, when you change the NIC, the guest generally does not see the new MAC and grouses until you change it. Thanks. DAVID

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[libvirt-users] USB2 passthrough
by Marco van Beek 19 Apr '11

19 Apr '11

Hi, I am trying to get a USB device working on a Windows 7 virtual machine, and it needs USB2 to work, so the USB passthrough does not work. I have searched for an answer and either the answer is so obvious I am being thick, or too complicated for anyone to address it. Can I simply do a PCI passthrough of a USB host controller? Would that then give me a whole load of USB2 ports I could connect to my computer? I would have to find out which port was connected to which controller, but surely it can't be that simple? Thanks, Marco -- Marco van Beek =================================================== Forget About IT Ltd. Grove Park Studios, 188-192 Sutton Court Rd, London, W4 3HR =================================================== T: 0870 757 2924 F: 0870 757 2926 M: 0788 770 3604 E: mvanbeek(a)forgetaboutit.net W: http://www.forgetaboutit.net/ =================================================== Forget About IT and FABIT are registered trademarks =================================================== Company Registered in England No. 05375739 ===================================================

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[libvirt-users] Default network / net-edit
by ssaleh＠nrln.us 19 Apr '11

19 Apr '11

How do you modify the default network parameters? The net-edit command within virsh does not seem to work as expected. TIA

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